Monthly Meteorological Report for Ferny Grove, Brisbane in September 2020 – warm nights; below average rainfall

At Ferny Grove, the overnight temperatures were above average and the highest in 10 years, whilst the daytime temperatures were close to average. All the official sites in the Brisbane area observed above average overnight temperatures. Daytime temperatures were close to average at many of the official sites and above average at the inland sites. Rainfall was below average, but close to the long term median at Ferny Grove. Most of the official sites saw below average rainfall totals. At Ferny Grove air pressure was above average, mean relative humidity and mean minimum relative humidity was near average, mean maximum relative humidity was above average, mean minimum dew point was close to average, mean maximum and mean dew point was above average, wind speed was above average and there with no thunderstorms (1 thunder day).

 

Temperature – above average overnight and near average daytime temperatures

Monthly Mean Daily Minimum Temperature: 13.3 ºC, 1.3 ºC above average and 1.2 ºC higher than same month in 2019. This is the second highest on record for September and the highest since the current record high of 14.1 ºC in 2010. The mean minimum temperatures in the Brisbane area were above average at all the official sites and at least 1 ºC above average at many of these sites. Many of the sites were between 1 ºC and 1.4 ºC above average that were observed at coastal and inland sites. Three sites measured anomalies that were less than 1 ºC above average, namely at Amberley (0.8 ºC above average) with a mean minimum temperature of 10.3 ºC, Beerburrum at 0.6 ºC above average and a mean minimum temperature of 12.6 ºC and Redcliffe was 0.9 ºC above average with a mean minimum temperature of 15.4 ºC. The highest mean minimum temperature was 17.8 ºC at Cape Moreton Lighthouse which also observed the highest anomaly from the long term average of 1.8 ºC above average. The lowest mean minimum temperature was 9.6 ºC at Canungra. Brisbane observed a mean minimum temperature of 14.9 ºC (1.1 ºC above average).

 

Monthly Mean Daily Maximum Temperature: 25.9 ºC, 0.5 ºC above average and 2.3 ºC lower than same month in 2019. This is the fifth highest on record for September and the lowest since 25.4 ºC in 2018. Many of the official sites in the Brisbane area measured close to average mean maximum temperatures and was above average at many of the inland sites. The sites that measured close to average maximum temperatures ranged between 0.4 ºC below average at Beerburrum (25.7 ºC) and 0.5 ºC above average at Beaudesert (26.8 ºC). The lowest mean maximum temperature was 23 ºC at Cape Moreton Lighthouse (1.4 ºC above average). The highest mean maximum temperature was 27.8 ºC at Gatton which observed the highest anomaly from the long term average of 2.2 ºC above average. Many of the other inland sites measured above average temperatures at Amberley (1.8 ºC above average and a mean maximum temperature of 27.5 ºC) and Archerfield (1.2 ºC above average and a mean maximum temperature of 26.5 ºC). Brisbane observed a mean maximum temperature of 25.9 ºC (0.2 ºC above average).

 

Mean Monthly Temperature: 19.6 ºC, 0.9 ºC above average, 0.6 ºC lower the same month in 2019. This is the fourth highest on record for September and the highest since 18.4 ºC in 2018.

 

Lowest Temperature: 8 ºC on 27 September 2020 at 5:56 AM. Same month in 2019 was 6.9 ºC. This is the equal third highest monthly minimum temperature for September on record, the highest since 8.9 ºC in 2016 on 4 September at 6:15 AM, the equal twenty-first lowest daily minimum temperature and the lowest since 7.7 ºC on 13 September 2019 at 5:47 AM. Official stations in the Brisbane area observed the lowest temperature of the month at most sites on the 27th and at Point Lookout on the 29th. The lowest was -0.2 ºC at Canungra on the 27th and the highest was 13.9 ºC at Cape Moreton Lighthouse on the 27th. There were some cool nights at some sites in the first half of the month and several cool nights in the last few nights in the month. Brisbane observed its lowest temperature of 10.3 ºC on the 27th.

Highest Temperature: 32.6 ºC on 22 September 2020 at 1:08 PM. The same month in 2019 was 35.3 ºC. This is the fourth highest monthly maximum temperature for September on record, the lowest since 31.2 ºC in 2018 on 29 September at 1:47 PM, the equal eighth highest daily maximum temperature and the highest since 35.3 ºC on 6 September 2019 at 1:44 PM. The official sites measured the highest temperature for the month on the 23rd and at some sites on the 19th, 21st, 22nd and 24th. The lowest was 25.4 ºC at Cape Moreton Lighthouse on the 19th and the highest was 34 ºC at Gatton on the 21st and Amberley on the 23rd. The highest temperature observed at Brisbane was 31.4 ºC on the 23rd. There were above average temperatures between the 14th and the 25th, especially between the 21st and 25th.

 

Lowest Daily Maximum Temperature: 20.4 ºC on 10 September 2020 at 1:08 PM. This is the fifth lowest monthly and daily maximum temperature for September on record and the lowest since 19.7 ºC in 2018 on 30 September at 8:59 PM. Same month in 2019 was 23.4 ºC. The official sites measured the coolest day of the month on the 10th at most sites and on the 11th at some sites. These ranged between 20 ºC at Logan City Treatment Plant on the 10th and 21.8 ºC at Redcliffe on the 11th. The lowest maximum temperature observed at Brisbane was 20.9 ºC on the 10th. In the Brisbane area there were cool days in the first 13 days of the month, mostly between the 6th and 13th. In the last few days of the month were some cool days.

 

Highest Daily Minimum Temperature: 20.6 ºC on 23 September 2020 at 5:17 AM. This is the highest monthly minimum daily temperature on record for September, exceeding the previous record high of 19 ºC in 2009 on 22 September. Same month in 2019 was 17.1 ºC. In the Brisbane area the warmest nights occurred on the 22nd and 23rd. These ranged between 18.1 ºC at Amberley on the 23rd and 21.8 ºC at Redcliffe on the 23rd. The highest minimum temperature measured at Brisbane was 20.8 ºC on the 23rd. Warm nights between the 18th and 24th peaking on the 21st to 23rd. Some warm nights at some sites in the first half of the month. Point Lookout observed a record high daily minimum temperature for September of 21 ºC on the 22nd exceeding the previous record high of 20.8 ºC in 2017 on the 28th.

 

Monthly Mean Minimum Grass Temperature: 11.2 ºC (1 ºC higher than same month in 2019).

 

Lowest Daily Minimum Grass Temperature: 4.6 ºC on 27 September 2020 (0.7 ºC lower than same month in 2019). This coincided with the lowest minimum air temperature of 8 ºC for the month.

 

Highest Daily Minimum Daily Grass Temperature: 18 ºC on 23 September 2020 (3.3 ºC higher than same month in 2019). This coincided with the highest minimum air temperature of 20.6 ºC for the month.

 

Highest Minimum Grass Temperature Depression: 3.4 ºC on 27 September 2020 with a minimum grass temperature of 4.6 ºC and an air temperature of 8 ºC.

 

Lowest Minimum Grass Temperature Depression: 1.3 ºC on 11 September 2020 with a minimum grass temperature of 13 ºC and an air temperature of 14.3 ºC.

 

Minimum September temperatures were predominately above average with a low number of cool nights that mostly occurred in the last few days of the month. The 1st was 2 ºC below average, easing to near average on the 2nd before a warm period followed for the next 5 days. The 3rd was 1 ºC above average, 2 ºC above average on the 4th, 1 ºC above average on the 5th and 3 ºC above average on the 6th and 7th. There were close to average temperatures on the 8th to 10th before warming again on the 12th to 14th of 1 ºC above average. The 15th was close to average, 1 ºC above average on the 16th and close to average on the 17th. The 18th to 24th was a warm period of 2 ºC above average on the 18th, 3 ºC above average on the 19th, 4 ºC above average on the 20th and 3 ºC above average on the 22nd. The 22nd and 23rd were especially warm at 6 ºC above average and 9 ºC above average, respectively. The temperature eased to 1 ºC below average on the 25th, then was 3 ºC above average on the 26th. The last few nights of the month was below average at 4 ºC below average on the 27th, 2 ºC below average on the 28th, eased to 1 ºC above average on the 29th and was 3 ºC below average on the 30th.

 

Maximum temperatures in September saw a mixture of below average and above average temperatures. The first three days of the month was close to average, warmed to 1 ºC above average on the 4th and 2 ºC above average on the 5th. Cool days followed between the 6th and 13th which was 2 ºC below average on the 6th to 8th, 1 ºC below average on the 9th, 5 ºC below average on the 10th, 3 ºC below average on the 11th, 2 ºC below average on the 12th and 1 ºC below average on the 13th. The 14th was 3 ºC above average, close to average on the 15th and 16th, warmed to 2 ºC above average on the 17th, close to average on the 18th and was 1 ºC below average on the 19th. A warm period followed of 4 ºC above average on the 20th and 21st, 7 ºC above average on the 22nd, 6 ºC above average on the 23rd, 5 ºC above average on the 24th and 3 ºC above average on the 25th. The 26th was close to average and warmed a little to 1 ºC above average on the 27th. In the last few days of the month were cooler days being 2 ºC below average on the 28th and 29th and 1 ºC below average on the 30th.

 

Heatwave Conditions (Maximum temperatures): Nil – Outside of heatwave season

 

MSL pressure – above average air pressure

Monthly Mean Daily Minimum MSL Pressure: 1018.9 hPa (1.9 hPa higher than same month in 2019). This is the highest on record for September exceeding the previous record high of 1017.2 hPa in 2015.

 

Monthly Mean Daily Maximum MSL Pressure: 1024 hPa (1.5 hPa higher than same month in 2019). This is the highest on record for September exceeding the previous record high of 1022.9 hPa in 2015.

 

Monthly Mean MSL Pressure: 1021.4 hPa (3.2 hPa above average, 1.7 hPa higher than same month in 2019). This is the highest on record for September exceeding the previous record high of 1020.1 hPa in 2015.

Lowest MSL Pressure: 1006.8 hPa on 25 September 2020 at 4:25 PM. The same month in 2019 saw 1006.8 hPa. This is the equal sixth highest and lowest monthly and daily minimum air pressure for September, equal ninth lowest daily minimum air pressure for September and lowest since 1006.8 on 6 September 2019 at 3:49 PM.

 

Highest MSL Pressure: 1030.4 hPa on 8 September 2020 at 8:30 AM. The same month in 2019 saw 1029.5 hPa. This is the third highest September monthly maximum air pressure, the fifth highest daily maximum air pressure for September and the highest since 1030.7 hPa in 2015 on 11 September at 9:10 AM.

Note: Air pressure measurements are being closely monitored to maintain its accuracy. Over the month of September, a difference of 0.16 hPa lower compared to the official BoM Brisbane site – No. 040913 was observed which is deemed as being acceptable.

 

Relative Humidity – near average mean humidity and mean minimum humidity, and above average mean maximum humidity

Monthly Mean Daily Minimum Humidity: 44.5 % (18 % higher than same month in 2019 and 1.8 % above average). This is the fifth highest on record for September and the highest since 48.2 % in 2018.

 

Monthly Mean Daily Maximum Humidity: 91.8 % (9.7 % higher than same month in 2019 and 2.5 % above average). This is the fourth highest on record for September and the highest since 92.6% in 2018.

 

Monthly Mean Humidity: 68.2 % (13.8 % higher than same month in 2019 and 2.1 % above average). This is the sixth highest and lowest on record for September and the highest since 68.9 % in 2016.

 

Lowest Humidity: 12 % on 27 September 2020 at 1:59 PM (6% higher than this month in 2019). This is the second lowest monthly minimum humidity for September on record, the lowest since the current record low of 6 % in 2019 on 4 September at 3:30 PM, the equal seventh lowest daily minimum humidity for September and the lowest since 9% in 2019 on 18 September at 2:58 PM.

 

Highest Humidity: 98 % on 21 September 2020 at 6:53 AM (1% higher than this month in 2019). This is the equal third highest monthly September maximum humidity on record and the equal highest since 98% in 2018 on 30 September at 12:25 AM.

 

Dew point – close to average mean minimum and above average mean and mean maximum dew point

Monthly mean daily minimum dew point: 9.3 ºC (0.2 ºC above average). This is the fifth lowest monthly mean minimum dew point for September on record and the highest since 9.8 ºC in 2018.

 

Monthly mean daily maximum dew point: 16.2 ºC (1.8 ºC above average). This is the second highest mean maximum dew point for September on record and highest since the current record high of 16.7 ºC in 2013.

Monthly mean dew point: 12.7 ºC (1 ºC above average). This is the fourth highest monthly mean dew point for September on record and the highest since 13.1 ºC in 2016.

 

Lowest dew point: -5.3 ºC on 27 September 2020 at 2:00 PM. This is the second lowest monthly minimum dew point for September on record, the lowest since the current record low of -11.6 ºC in 2019 on 9 September at 1:30 PM, the tenth lowest daily dew point for September and the lowest since -8.8 ºC on 18 September 2019 at 2:59 PM.

 

Highest dew point: 21.6 ºC on 22 September 2020 at 3:19 PM. This is the second highest monthly and daily maximum dew point on record for September and the highest since the current record high of 22.1 ºC in 2013 on 26 September at 2:15 PM.

 

Wind Speed – above average wind speed

Maximum Wind Gust: 50 km/hr on 26 September 2020 at 11:15 AM. This is the fourth lowest September maximum wind gust, the lowest since 42.7 km/hr in 2013 on 16 September at 3:41 PM, the equal eighteenth highest daily wind gust on record for September and the highest since 54 km/hr on 9 September 2019 at 11:22 AM.

 

Maximum Wind Speed: 27 km/hr on 26 September 2020 at 12:24 PM (Moderate Force Wind). This is the equal lowest monthly maximum wind speed for September on record, equalling 27 km/hr in 2019 on 9 September at 9:58 PM, the twenty-seventh highest daily wind speed for September and the highest since 29.8 km/hr in 2018 on 24 September at 7:14 AM.

 

Wind Run: 3305.8 km (804.3 km lower than same month in 2019), 415.6 km above average and 15.4 % above average. This is the second highest on record for September total wind run and the highest since the current record high of 4110.1 km in 2019.

 

Monthly Mean Wind Speed: 4.6 km/hr (1.1 km/hr lower than this month in 2019), 0.6 km/hr above the long term average). This is the second highest on record for September and the highest since the current record high of 5.7 km/hr in 2019.

 

Daily Mean Maximum Wind Gust: 27.6 km/hr (1.3 km/hr higher than this month in 2019), 2.8 km/hr above average and 11.4 % above average. This is the second lowest daily mean maximum wind gust on record for September and the highest since 26.2 km/hr in 2011.

 

Daily Mean Maximum Wind Speed: 14.1 km/hr, 0.4 km/hr higher than this month in 2019), 3.8 km/hr above average and 36.7 % above average. This is the lowest on record for September exceeding the previous record low of 27.7 km/hr in 2012.

 

Dominant Direction: SE (NE this month last year).

 

Rainfall – below average rainfall

Monthly Rainfall Total: 14.2 mm (19 mm below average) and 42.7% of the long-term average. This total is in decile 4/ 36th percentile which ranks as average and 6.3 mm below the long-term median (69.3 % of long term median). This total is higher than this month in 2019 which was 2.8 mm, the twelfth lowest on record for September and the highest since 38 mm in 2018.

 

The long period rainfall totals remained well below average during most periods while deteriorating further. Compared to the previous month, 6 monthly rainfall fell significantly to 161.7 mm below average (decile 2) being more than 6 months since above average rainfall at the start of the year. 9 monthly rainfall increased its positive anomaly which was 79.4 mm above average (decile 6). The periods of 12 to 48 months remained below average and fell further for most of these periods. 12 monthly rainfall remained like the previous month of 72.4 mm below the long-term average (decile 5). 18 months to 48 months rainfall was between 119 mm below average (decile 4) for 36 month rainfall and 245.3 mm below average (decile 4) for 24 month rainfall.

 

All the official sites in the Brisbane area observed below average rainfall totals. Most of the sites observed totals that ranked historically as low that saw totals that were between 16% and 35% of the long term average. 2 of the sites saw totals that ranked as average being 17.8 mm at Beerburrum (38 % of the long term average) and 27.2 mm at Redcliffe (74% of the long term average), which observed the highest percentage of the long term average and highest total of the main official sites. The highest total for all the official sites was 93.5 mm at Caloundra Airport. The lowest rainfall total and smallest percentage of the long term average was 0 mm and 0% for Beaudesert. Brisbane observed a total that was 32 % of the long term average with a total of 5.8 mm and this ranked as low.

 

In the Brisbane area there were showers on the 7th along and near a surface trough with totals generally less than 10 mm, though some sites in the north and along the bay measuring higher totals. Showers occurred on the 11th and 19th from onshore flow. At the end of the month were light showers at some locations.

 

Number of Rain Days (0.1 mm or greater): 3 days, equal to 2019 and 1.5 days above average. This is equal third lowest on record for September and is the lowest since 1 day in 2017.

 

Highest Daily Total: 7.2 mm on 7 September 2020. This is the tenth lowest for September highest daily rainfall on record, the thirty-ninth lowest daily total on daily basis for September and the highest since 14.6 mm on 30 September 2018. The highest daily total in the Brisbane area of all official sites was 66 mm at Caloundra Airport on 7 September 2020.

 

The year to date total is 854.4 mm (93.4 mm above average and 9.8 % above average) and compared with previous January to September totals is the highest since 1057.9 mm in 2015 and is the eleventh highest on record.

 

Monthly Rainfall Total – (automatic gauge) 24 hours to 9am: 13.8 mm (0.4 mm less than the site official standard gauge and within 2.8 %). Highest daily total of automatic gauge, (24 hours to 9am): 7.2 mm on 7 September 2020, (24 hours from midnight): 7 mm on 6 September 2020.

 

Note: This automatic gauge for the month of September, reached the expected accuracy (of +/- 10% of the standard gauge) at +2.8%.

 

A light few drops in the late morning of the 6th, followed by a light to moderate shower that cleared in the middle of the day. Light showers in the first few hours of the following day with 7.2 mm on the 7th. Light showers and drizzle in the afternoon and evening of the 10th followed by light showers early on the 11th, with 2.6 mm observed on the 11th. A brief light showers in the early evening of the 18th a light to moderate shower in the late evening and light showers early in the following day brought 4 mm. A brief light shower in the early evening of the 19th and again in the early morning of the 23rd. On the 25th was a brief light shower from a thunderstorm passing to the south.

 

There was 0 days with falls of at least 25 mm (equal to same month in 2019) with 0 days of less than 1 mm (2 less than same month in 2019).

 

Highest rainfall rate was 47.6 mm/hr on the 6 September 2020 at 12:02 PM. This is the third highest monthly and daily rainfall rate for September and the highest since 80.4 mm/hr in 2018 on 8 September at 4:49 PM.

 

The highest hourly rainfall total was 5.6 mm on the 6 September 2020 at 12:14 PM. This is the third lowest hourly rain for September on monthly basis, the highest since 8.8 mm in 2018 on 8 September at 5:22 PM, the sixth highest daily hourly rainfall for September and the highest hourly total for September since 5.7 mm on 30 September 2018 at 3:47 PM.

 

Number of severe thunderstorms: 0

 

Number of thunderstorms: 0 (Mild: 0, Moderate: 0)

 

Number of thunder days: 1 day

 

Number of nearby storms: 2

 

Severe thunderstorms of note in the Brisbane area: Nil

 

Remarks for month

• Smoke haze with the temperature quite variable during the daytime on the 1st
• Smoke haze on the 2nd, warm early in the day and variable daytime temperature
• On the 4th was smoke haze
• Mostly sunny with increasing high clouds on the 5th. A warm evening.
• A warm morning with cloudy periods during the day on the 6th. As the cloud increased during the day and brought rainfall the temperature rose more slowly and became cool to cold. High relative humidity from the late morning to late afternoon. A S to SE wind change in the late morning.
• The 7th saw increasing cloud and became cloudy. Warm early in the day and was variable during the daytime. Warm in the evening.
• Variable temperature on the 8th, that rose and fell many times.
• On the 9th the temperature was mostly stable during the early hours before variable temperature from the mid-morning to the mid-afternoon
• Cloudy on the 10th with some rainfall with light falls in the afternoon and evening. The temperature was rather variable from the mid-morning to the mid-afternoon, with a cool day.
• Cloudy at times, a cool day and the temperature was variable from the mid-morning to the mid-afternoon of the 11th. S to SE winds in the afternoon was moderate at times.
• Variable temperature from the mid-morning to the mid-afternoon of the 12th.
• Warm early in the day before the temperature was variable from the mid-morning to the mid-afternoon on the 13th.
• Mostly sunny on the 14th. The temperature was stable in the early hours and was variable from the mid-morning to the mid-afternoon. Warm during most of the afternoon and early in the evening.
• On the 15th was variable temperature from the mid-morning to the mid-afternoon. Warm in the late afternoon and early evening.
• Warm early in the day on the 16th, with the temperature falling slowly or was stable. Variable temperature from the mid-morning to the mid-afternoon.
• Sunny on the 17th and was warm in the evening.
• Warm early in the day on the 18th with the temperature falling slowly. Variable temperature from the mid-morning to the mid-afternoon. Warm from the late afternoon.
• A very warm night early on the 19th with the temperature generally stable. Variable temperature from the mid-morning to the mid-afternoon. Warm in the evening.
• On the 20th was a very warm morning with the minimum temperature reached very early in the day and was stable during the rest of the early hours. Warm during the day and in the evening. Variable temperature from the mid-morning to the mid-afternoon.
• Mostly sunny on the 21st. Warm early in the day with the temperature falling slowly, followed by a warm day and evening.
• Cloudy at times, with the minimum temperature reached very early in the day and a resulting warm night on the 22nd. A warm to hot day and a warm evening.
• The 23rd was cloudy at times with another warm start to the day with the temperature stable and falling slowly in the early hours.
• Warm from early on the 24th before a hot day. Low dew point in the morning and very low in the afternoon. Very low relative humidity from early in the day until the afternoon.
• Mostly sunny with smoke haze on the 25th. A thunderstorm passed to the south, and then a thunderstorm passed to the north. A warm morning, warm in the late afternoon and very warm in the evening.
• The 26th was sunny with smoke haze. Warm in the early hours. The dew point fell sharply of 10 C in 20 minutes and became and remained very low with a NNW to WNW wind change at the start of the day, that brought light to moderate WSW to NW winds during the remainder of the day. Relative humidity became very low with the wind change (falling 42% in 20 minutes) and remained low or very low during the day. The minimum relative humidity in the afternoon was 16 %.
• Sunny on the 27th. The dew point remained low or very low until the late afternoon and fell to a low of -5 C. Relative humidity was low or very low until the late afternoon also, which fell to a low of 12% in the afternoon.
• Cool in the early afternoon on the 28th, as the temperature stopped rising in the late morning and became variable through to the mid-afternoon.
• The minimum temperature on the 29th occurred on the 28th, with the temperature remaining above this minimum temperature during the early hours of the 29th. Very variable temperature from the mid-morning to mid-afternoon, with the temperature becoming cool in the late morning and in the afternoon.
• Variable temperature from the mid-morning to the mid-afternoon on the 30th. The temperature rose more slowly later in the morning and the maximum temperature was reached in the middle of the day.
• 6 days of dew – light: 3 days (1st, 15th and 25th), moderate: 3 day (8th, 9th and 21st)

 

Weather influences

• Following the passage of a trough and a south-easterly wind change that shifted north-wards along the southern Queensland coast on the 1st, a weak ridge of high pressure extended along the east Queensland coast as a high pressure system drifted eastwards over the Tasman Sea.
• On the 2nd a high pressure system shifted eastwards over the state and into the Tasman Sea on the 3rd and 4th which extended a weakening ridge along the east Queensland coast.
• On the 5th the high pressure system drifted further east over the Tasman Sea and continued to extend a ridge along the east Queensland coast. This brought some moisture in the onshore flow, whilst a trough over the interior of the state extended warm northerly flow over southern and eastern parts of the state.
• The trough shifted eastwards over the region on the 6th, while extending northwards, followed by a south-easterly wind change after its passage. The trough then shifted east-wards towards the south coast while decaying, which brought some shower activity.
• A high pressure system continued to shift eastwards over the Tasman Sea and extended a strengthening ridge and moist onshore wind flow along the east Queensland coast on the 7th
• On the 8th a high pressure system shifting eastwards over the Tasman Sea extended a firm ridge along the east Queensland coast maintaining the moist onshore flow.
• A weakening ridge extended along the east Queensland coast on the 9th from a high pressure system in the Tasman Sea.
• On the 10th a weakening ridge extended over eastern Queensland. A weak trough extended over the southern inland of the state and was slow moving, while the coastal section of the trough moved northwards from New South Wales into southern Queensland and brought unstable conditions.
• A weak trough near Fraser Island lingered while weakening on the 11th and brought some showers over the southeast, mostly by the coast. A high pressure system moving east over the Tasman Sea extended a strengthening ridge and onshore wind flow along the east Queensland coast.
• On the 12th a weak trough shifted further north towards the Capricornia while a high pressure system in the Tasman Sea extended a strong ridge and moist onshore flow along the east Queensland coast
• A large high pressure system drifted northwards over the Tasman Sea on the 13th and extended a weakening ridge along the east Queensland coast. This extended moist onshore flow along the east Queensland coast.
• On the 14th and 15th a large high pressure system drifted eastwards over the Tasman Sea and extended a weakening ridge and moist onshore flow along the east Queensland coast.
• On the 16th a high pressure system in the Tasman Sea maintained a ridge over eastern Queensland. This extended moist onshore wind flow along the east Queensland coast
• The high pressure system shifted further east over the Tasman Sea on the 17th and maintained a ridge over eastern Queensland
• On the 18th a high pressure system shifted eastwards over the Tasman Sea and extended a weakening ridge and moist onshore wind flow along the east Queensland coast
• The high pressure system continued to extend moist onshore flow along the east Queensland coast on the 19th, before starting to weaken on the 20th. A weakening trough shifted eastwards into eastern Queensland with some unstable conditions
• On the 21st a high pressure system shifted eastwards to be near New Zealand and extended a ridge over eastern Queensland that continued to weaken along the southern Queensland coast. A trough system shifted over the inland of the state that extended a warm and dry air mass.
• A cold front and trough shifted eastwards on the 22nd which approached the region later in the day with some instability that decayed as the system moved into the region. A high pressure system to the east of New Zealand extended a weakening ridge along the Queensland east coast.
• A trough cleared the southern Queensland coast in the morning of the 23rd while extending to the north of the region. In the wake of the trough a high pressure system south of Western Australia extended a ridge with stable conditions
• On the 24th a cold front approached the inland of the state and extended a warm and dry airmass over most of the state and into south-eastern Queensland. The high pressure system continued to extend a ridge over the state.
• A cold front moved eastwards over the state on the 25th, approached the region later in the day with some instability. A trough also extended over eastern Queensland.
• On the 26th and 27th a high pressure system south of South Australia extended a strengthening ridge over the state. Dry west to south-westerly flow extended a cool and dry air mass across the state in the wake of the cold front.
• On the 28th a high near south-eastern Australia extended a strengthening ridge over the state and extended a stable air mass over most of the state
• The high pressure system moved into the Tasman Sea on the 29th and continued to extend a strengthening ridge over the state and onshore flow along the east Queensland coast on the 29th and 30th
• On the 31st a high pressure system in the Tasman Sea continued to extend a ridge along the east Queensland coast. A trough shifted eastwards over the inland of the state and brought some instability to the region.

 

Daily weather notes

• 1/9/20: Partly cloudy with Cu and Sc clouds. Smoke haze. The temperature stopped falling later in the early hours and started to rise. The temperature was variable from the mid-morning to the mid-afternoon which rose and fell numerous times. Slightly cool in the afternoon and slightly warm in the evening with the temperature becoming stable later in the evening. The dew point fell during the first few hours of the day close to average before rising from the early morning, became stable in the mid-morning, slowly fell in the late morning and early afternoon before rising through to the mid-afternoon slightly above average before stabilising during the rest of the afternoon and evening. Relative humidity was near average, became moderately high in the afternoon returning to near average in the evening. Mostly calm winds from early, then light WSW to SSE winds in the morning, SSE to ENE later in the morning with some N winds, ENE to SE in the early afternoon, E to SE from the mid-afternoon before SSE to ESE light winds in the early evening. Calm winds were present during the rest of the evening with some E to SE winds.
• 2/9/20: Partly cloudy with Sc and Cu clouds. Smoke haze. Warm in the first few hours of the easing before easing to near average. Variable temperature rising and falling many times from the mid-morning to the mid-afternoon. A slightly cool afternoon. In the early hours the dew point fell slightly above average, rose during the morning slightly above average, slowly fell form the mid-morning, was generally stable in the afternoon before slowly falling in the evening and remained slightly above average. Relative humidity was near average early, slightly above average in the morning and moderately high from the late morning. Calm winds early before light S to SW winds in the mid-morning backed to SE to NE from the mid-morning, E to NE from the mid-afternoon, ENE to NE from the late afternoon before calm winds in the evening.
• 3/9/20: Slightly warm in the early hours. The temperature stopped rising in the late morning, and after falling the temperature rose to the maximum temperature in the early afternoon. Slightly cool in the afternoon returning to near average later in the afternoon. Later in the evening the temperature generally stabilised and became slightly warm. Early the dew point generally fell slightly above average, generally stable from the mid-morning and except for briefly falling in the late afternoon remained slightly above average. Relative humidity was near average from early, moderately high from the late morning and was variable form the late morning to the mid-afternoon. In the evening, the relative humidity became near average. Calm winds early before light SSW to W winds in the mid-morning, then mostly N through to E winds later in the morning, E to NE in the afternoon, ENE to NE from the mid-afternoon and some N to NW at times during the evening.
• 4/9/20: Partly cloudy with Cu and Sc clouds. Smoke haze. A slightly warm morning. The temperature was a little variable from the mid-morning to the mid-afternoon. For 2 hours in the evening the temperature was stable. The dew point was slightly above average early while falling in the first few hours of the day, then rose, slowly fell from the mid-morning and was variable in the afternoon generally stable and returned to near average. In the evening, the dew point was generally stable and slightly above average. The relative humidity was near average from the early, slightly above average during the day and was a little variable returning to near average in the evening. Some light N to WNW winds in the first hour of the day, then calm winds before N to NE from the mid-morning, E to NE in the afternoon and NNW to NNE winds in the evening followed by calm winds later in the evening.
• 5/9/20: Mostly sunny with some Cu clouds. Ci and Cs clouds increased during the day. A slightly warm initially in the early hours before returning to near average in the early morning. Later in the morning the temperature became slightly warm after rising quickly in the morning. In the early afternoon, the temperature stopped rising and generally stabilised and the temperature returned to near average in the afternoon. From the mid-morning to the mid-afternoon the temperature was variable. Warm in the evening. The dew point fell generally in the early hours slightly above average, returned to near average in the morning, then rose in the morning slightly above average before falling from the mid-morning close to average. In the early afternoon, the dew point rose, then slowly fell before rising in the late morning slightly above average. In the evening, the dew point became moderately high and stable. Near average relative humidity from early, and slightly above average from the early afternoon. Calm winds mostly early in the day, light NW to NE winds in the morning with some variable winds, E to NE in the afternoon, N to NE in the evening before calm winds later in the evening.
• 6/9/20: Cloudy periods of Cu and Sc clouds, increasing from the late morning. A light few drops in the late morning, followed by a light to moderate shower before midday that cleared just after midday. Drizzle in the early afternoon. Light showers in the late evening. The temperature was stable at times early in the day with a warm morning. The temperature rose more slowly later in the morning under increasing cloud before becoming cold during the middle of the day and fell 7 C in the hour to 12:30pm. Following the rainfall, the temperature rose but remained below the maximum temperature reached before the rainfall while remaining cool. A little variable temperature in the evening that was close to average becoming slightly warm. Early the dew point fell, then rose in the morning, fell in the late morning moderately high before becoming stable in the afternoon. From the mid-afternoon the dew point fell slowly and, in the evening, slightly above average but was variable. Relative humidity was near average from early, rose from slightly above average in the mid-morning to moderately high in the late morning as the relative humidity rose slowly. With the rain the relative humidity rose quickly in the middle of the day and became high. Later in the afternoon the relative humidity eased to slightly above average and was near average at times in the evening. Calm winds early, S to SW winds in the morning before a S to SE change with some ESE winds from the late morning. The wind was a little gusty with the rain. Some SSW winds in the late evening.
• 7/9/20: Increasing Cu and Sc clouds in the morning and became cloudy. Light showers in the first few hours of the day clearing. A warm start to the day with the temperature stable during most of the early hours. The temperature was rather variable from the mid-morning to the early afternoon rising and falling numerous times. The temperature fell slowly in the evening and became warm. Generally stable dew point early in the day was slightly above average and moderately high at times. The dew point rose in the morning before falling from the mid-morning close to average, rose slowly from the late morning, became stable in the early evening before falling slowly later in the evening while remaining close to average. Relative humidity was slightly above average in the first few hours of the day, then returned to close to average during the rest of the early hours, during the day and became moderately low in the evening with the relative humidity falling slowly. Light SSE to SW winds at times in the early hours and otherwise calm before S to SW winds in the morning, S to SE from the mid-morning, shifting SSE to SE from the late morning before veering in the evening to S to SE in the early evening and S to SW later in the evening.
• 8/9/20: Partly cloudy with Cu and Sc clouds. Variable temperature rose and fell many times from the mid-morning to the mid-afternoon. Slightly cool in the afternoon. In the early hours the dew point fell slowly close to average, rose in the morning and became generally stable from the mid-morning to the mid-afternoon close to average and slightly above average in the late morning and early afternoon. From the mid-afternoon the dew point fell slowly close to average. Slightly below average relative humidity at times early in the day, near average from the morning and was a little variable from the late morning to the mid-afternoon. Later in the morning the relative humidity became slightly above average, moderately high in the early afternoon before easing to slightly above average from the mid-afternoon. Mostly calm winds early, light SSW to WSW winds in the mid-morning, backed during the morning to SSE to ESE in the late morning, E to SE in the afternoon and early evening before calm winds during the rest of the evening.
• 9/9/20: Partly cloudy with Cu and Sc clouds. Early in the day the temperature was generally stable most of time close to average. Variable temperature from the mid-morning to the mid-afternoon. Slightly cool in the afternoon after the maximum temperature was reached in the early afternoon. Slightly cool later in the evening. Generally stable and close to average dew point early in the day and after temporarily a little in the morning the dew point rose slowly during the rest of the morning and in the afternoon close to average. In the evening, the dew point fell slowly. The relative humidity eased from slightly above average to near average from early. Slightly above relative humidity from the mid-afternoon. Calm winds early before light WSW to SSW winds shifted to E to SE during the morning, SE to NE from the mid-morning, ESE to NE from the mid-afternoon before calm winds in the evening.
• 10/9/20: Cloudy with Cu, Sc, and Ac clouds. Light showers and drizzle during the afternoon and evening ceasing in the late evening. Rather variable temperature from the mid-morning and the afternoon. A cool day before the temperature returned to near average in the evening. From early in the day the dew point rose and more slowly in the morning and afternoon close to average before falling slowly from the late afternoon. Near average relative humidity from early with the relative humidity stable during most of the early hours, fell quite slowly later in the morning and was slightly above average, rose in the afternoon moderately high before stabilising in the evening close to average before becoming slightly below average in the late evening. Calm winds early before WSW to SSW in the morning, S to SW in the afternoon with some SSE winds, S to SSE winds later in the afternoon before S to SW with some SSE winds in the evening.
• 11/9/20: Partly cloudy and cloudy at times with Cu and Sc clouds. Early light showers cleared. The temperature was slightly warm early and stable in the early hours. A cool day with the temperature becoming slightly cool later in the morning and cool during the afternoon. The temperature was variable from the mid-morning to the mid-afternoon. The dew point was stable early slightly above average and after rising a little in the early morning the dew point fell close to average. The dew point generally fell from the mid-morning close to average, became slightly below average in the early afternoon and after rising slightly in the mid-afternoon the dew point was stable and slightly below average during the rest of the afternoon. In the evening, the dew point fell slowly slightly below average. Relative humidity rose slowly in the early hours close to average and was near average during the day and slightly below average in the evening. Light S to SW winds with some SSE winds from early, S to SSE from the mid-morning, light with some moderate S to SE winds during the afternoon before veering in the evening to SSW to SW later in the evening.
• 12/9/20: Partly cloudy with Cu and Sc clouds. The temperature was variable from the mid-morning to the mid-afternoon. The dew point was close to average from early before rising in the morning close to average. In the late evening, the temperature started to rise and was slightly warm. From the mid-morning the dew point fell slightly below average, rose during the afternoon, and returned to near average from the early evening. During the rest of the evening the dew point was near average while falling slowly. Relative humidity was slightly below average from the morning and moderately low in the evening. Light WSW to SSW early before backing during the morning to SSE to SE from the mid-morning. In the afternoon were ESE to SE winds before SE to SW winds in the early evening. During the rest of the evening were calm winds.
• 13/9/20: Partly cloudy with Cu and Sc clouds. After the temperature initially rose at the start of the day the temperature fell slowly and was warm. The temperature was variable from the mid-morning to the mid-afternoon. A slightly warm evening with the temperature falling a little slowly. Near average and stable dew point early in the day, then rose during the morning, before becoming generally stable from the mid-morning close to average before falling a little in the evening. The relative humidity was moderately low in the early hours, returned to near average from the morning and slightly above average at times. The relative humidity stopped falling in the late morning before rising from later in the afternoon. In the evening, the relative humidity was slightly below average before becoming near average later in the evening. Light and mostly S to SW winds at times in the early hours, S to SW winds earlier this morning and light S to SE winds in the mid-morning was followed by E to SE winds later in the morning, E to SE with some E to NE winds in the afternoon before E to NE winds from the late afternoon. In the evening, the wind was calm.
• 14/9/20: Mostly sunny with some Cu clouds. Generally, slightly warm temperature early in the day with the temperature mostly stable. Variable temperature from the mid-morning to the mid-afternoon. Slightly warm during the morning, warm during much of the afternoon and early in the evening before easing to slightly warm later in the evening. Generally stable dew point early in the day, rose in the morning before falling slowly from 8am close to average. During the rest of the morning the dew point fell slowly, rose in the afternoon before falling slowly from the mid-afternoon while remaining close to average. Relative humidity was slightly below average early in the day before returning to near average from the morning. Calm winds early before light and variable developed in the morning, SSE to E from the mid-morning and followed by ESE to NE winds in the afternoon with some SSE to ESE winds. Later in the afternoon were ENE to NNE winds and in the early evening before calm winds during the rest of the evening.
• 15/9/20: Partly cloudy with Cu and Sc clouds. A slightly warm start to the day. The temperature was variable from mid-morning to the mid-afternoon and was slightly warm during the morning before returning to near average in the afternoon. Later in the afternoon and in the early evening it was warm with the temperature falling relatively slowly before easing to slightly warm as the temperature fell a little quicker later in the evening. Close to average dew point early in the day that fell slowly, then rose during the morning, fell from the mid-morning but was rather variable, rose in the afternoon before falling slowly later in the afternoon and was close to average. In the evening, the dew point rose before falling later in the evening whilst remaining close to average. Relative humidity was slightly below average from early in the day and was moderately low at times in the evening. Calm winds early before light WSW to SSW winds in the morning, backed to SSE to E winds in the mid-morning was followed by SE to ESE winds later in the morning, E to SE in the afternoon before SSE to ESE in the early evening. Later in the evening the wind became calm.
• 16/9/20: Partly cloudy with Cu and Sc clouds. A warm start to the day with the temperature falling slowly or was stable. Slightly warm in the afternoon and evening. From the mid-morning to the mid-afternoon the temperature was variable. Stable dew point early in the day, rose during the morning close to average, fell from the mid-morning, became generally stable in the afternoon, and then rose later in the afternoon while remaining close to average. In the late afternoon, the dew point became stable before falling later in the evening close to average. Relative humidity was moderately low from early in the day, returned to near average from the morning and became slightly below average from the afternoon. Calm winds early before light SSW to SW winds developed in the mid-morning, backed to E to SE later in the morning, SE to NE in the afternoon, E to NE later in the afternoon before calm winds in the evening.
• 17/9/20: Sunny with some Cu clouds from the morning. Slightly warm during most of the early hours. A slightly warm day with the temperature a little variable from the mid-morning to the mid-afternoon. Warm in the evening with the temperature falling a little slowly from the late afternoon. The dew point was near average over the entire day that fell in the early hours and in the morning, then briefly rose in the early afternoon before becoming generally stable while falling and rising close to average. From the late afternoon the dew point fell. Relative humidity was slightly below average during most of the early hours and from the morning, close to average at times later in the afternoon and was slightly below average in the evening. Calm winds early before light and variable winds in the morning, ESE to NE in the afternoon, E to NE later in the afternoon and in the early evening before calm winds during the remainder of the evening.
• 18/9/20: Partly cloudy with Cu and Sc clouds. A brief light shower in the early evening before a light to moderate shower in the late evening. A warm night with the temperature falling slowly in the early hours. The temperature was variable from the mid-morning to the mid-afternoon. From the late afternoon the temperature became warm with the temperature falling a little slowly. In the early hours the dew point fell slowly close to average, rose in the morning, then fell from the mid-morning, became stable from the late morning, stable in the afternoon before rising from the late afternoon slightly above average. In the evening, the dew point fell slowly before starting to rise in the late evening while remaining slightly above average. Close to average relative humidity from early and slightly above average in the evening. Calm winds early before SSW to SW winds in the morning that became SSE to ESE, E to SE from the late morning, S to SE in the early evening before mostly calm winds during the rest of the evening.
• 19/9/20: Partly cloudy with Cu and Sc clouds and Ci clouds in the afternoon. Some light showers in the early hours. A brief light shower in the early evening. Generally stable temperature in the early hours before the temperature fell a little at end of the early hours with a very warm night. The temperature was variable from the mid-morning to the mid-afternoon A warm evening with the temperature falling a little slowly. Generally stable dew point early in the day and was slightly above average, fell during the morning close to average, became stable in the afternoon before rising from the late afternoon before falling later in the evening whilst remaining close to average. Relative humidity was slightly above average, returned to near average from the morning and became slightly above average in the evening. Light and variable winds at times early in the day, E to SE in the morning and afternoon, ESE to ENE from the late afternoon before calm winds in the evening.
• 20/9/20: Partly cloudy with Cu and Sc clouds with some Ci clouds during the morning. A very warm morning with minimum temperature reached very early in the day before generally stable temperature during the remainder of the early hours. A warm day with a slightly warm morning and a warm afternoon, whilst remaining warm during the evening. The temperature was variable from the mid-morning to the mid-afternoon. In the early hours the dew point rose slowly slightly above average, rose during the morning, became stable from the mid-morning before starting to rise a little in the late afternoon and the early evening becoming moderately high and started to fall in the late evening. Relative humidity was near average from early in the day and became slightly above average in the evening. Mostly calm winds in the early hours, some W to SW winds in the early morning, light and variable winds during the rest of the morning and in the early afternoon, E to NE in the afternoon and in the early evening before light N to NNW winds during the rest of the evening with calm winds at times.
• 21/9/20: Mostly sunny with some Cu and Sc clouds and Ci clouds in the morning. A warm start to the day with the temperature falling slowly in the early hours. A warm day. The temperature was a little variable in the morning and variable in the first half of the afternoon. The warmth remained in the evening with the temperature stable or fell slowly in the evening. Slightly above average dew point early in the day while the dew point fell, rose in the early morning, was stable in the morning and afternoon slightly above average before briefly rising in the early afternoon and became moderately high. During the rest of the afternoon the dew point was stable before falling very slowly in the evening remaining moderately high. Relative humidity was close to average except for slightly above average relative humidity in the afternoon. Calm winds early before light NNW to NE winds in the morning, ESE to NE in the early afternoon, E to NE during the remainder of the afternoon with some moderate winds in the afternoon before N to NE winds in the evening.
• 22/9/20: Partly cloudy with Sc and Cu clouds, some Ci clouds in the morning and cloudy at times in the afternoon. A very warm start to the day with the minimum temperature reached very early in the day, before rising slowly during the rest of the early hours. A warm to hot day, with the temperature rising relatively steadily during the morning before reaching the maximum temperature in the early afternoon. During the rest of the afternoon the temperature was warm to hot and was stable or fell slowly before falling slowly in the evening whilst remaining warm. In the first hour of the day the dew point fell before rising slowly during the rest of the early hours, was stable in the morning and in the early afternoon moderately high and after briefly rising a little the dew point was stable and moderately high in the afternoon and in the evening. Relative humidity was close to average from early in the day and after briefly rising sharply in the early afternoon the relative humidity became slightly above average later in the afternoon. In the evening, the relative humidity fell a little slowly and returned to near average. Calm winds early before mostly N to NE winds later on in the early hours, then N to NE winds mostly in the morning, N to WNW in the early afternoon before shifting to E to SE at 1:30pm (with the rise in humidity and a fall in temperature) before E to NE winds during the rest of the afternoon. In the evening were light N to NE winds with some calm winds before calm winds from 10pm.
• 23/9/20: Partly cloudy with Cu, Sc, and Ac clouds and cloudy at times. A brief light shower at 7:30am. A very warm start to the day with the temperature stable or falling slowly easing to warm during the morning. A hot day, and after the maximum temperature was reached in the mid-afternoon the temperature fell relatively slowly whilst remaining hot. Late in the evening the temperature started to rise slowly. The dew point fell in the early hours, mostly quite slowly moderately high before falling a little more quickly in the morning and returned to near average, slowly rose in the afternoon before briefly rising sharply in the mid-afternoon and then rose during the rest of the afternoon slightly above average. In the early evening, the dew point fell slowly before falling more quickly later in the evening and became moderately low. Relative humidity was near average at the start of the day, reduced to slightly below average from later in the early hours and became moderately low in the afternoon. In the late afternoon, the relative humidity returned to near average before falling quickly later in the evening and became very low before stabilising later in the evening. Calm winds early with some light NW or SW winds briefly at times later in the early hours and in the early morning, light WNW to SW winds in the morning, N to NW winds from the late morning, some N to NE winds in the afternoon before ENE to NNE winds from the mid-afternoon. Early in the evening winds were calm before NNW to WNW winds later in the evening.
• 24/9/20: Party cloudy with Cu and Sc clouds in the morning clearing to sunny skies from later in the morning. The temperature fell slowly in the early hours with a warm night and warmed quickly during the morning with a warm morning and a hot day. The temperature was a little variable from the mid-morning to the mid-afternoon. Later in the afternoon and in the evening the temperature fell quickly and returned to near average in the late evening. The dew point fell slowly from early in the day moderately low before falling during the morning and became low and fell further in the afternoon to below 0 C at times and was very low. At 3:30pm the dew point rose sharply for a brief period that eased to moderately before continuing to rise during the rest of the day and eased to slightly below average in the evening. Relative humidity was very low in the early hours before rising slowly and remained in the morning and afternoon while the relative humidity fell. The relative humidity rose later in the afternoon and in the evening and steadily recovered to slightly below average in the evening. Mostly calm winds early in the day with some light and variable winds at times. Light and variable winds before S through to W winds with some variable winds from the mid-morning, WNW to N in the early afternoon before becoming WSW to NW winds with some variable winds. With the rise in humidity the winds shifted E to NE later in the afternoon and in the early evening before calm winds during the evening.
• 25/9/20: Mostly sunny with some Sc and Cu clouds. Smoke haze. A brief light shower (with no measurable rainfall) from a thunderstorm passing to the south. A thunderstorm then passed to the north. Warm in the morning and slightly warm in the afternoon. The maximum temperature was reached in the late morning and was stable in the first half of the afternoon. The temperature fell slowly before stabilising later in the evening and became warm in the late afternoon and very warm in the evening. Stable dew point in the early hours slightly below average before rising back to near average from the morning. The dew point became stable from the mid-morning, after temporarily rising in the late morning moderately high the dew point was stable in the afternoon before falling slowly from the late afternoon slightly above average. Near average relative humidity early in the day, before slipping a little to slightly below average in the morning and returned to near average later in the morning. Relative humidity was slightly above average in the first half of the afternoon, eased to near average from the late afternoon before stabilising in the evening slightly below average. Calm winds early before N to NE winds with some variable winds in the morning, E to NNE later in the morning, E to NE in the afternoon before NNE to NE winds later in the afternoon and in the early evening. Some variable winds were followed by N to NW later in the evening.
• 26/9/20: Sunny. Smoke haze. A very warm start to the day, which eased during the early hours to slightly warm when the minimum temperature was reached before becoming slightly below average from the early morning and was near average from the mid-morning. In the evening, the temperature was slightly warm with the temperature falling a little slowly. At the start of the day the dew point was stable before falling sharply at 1am with a wind change which fell 10C in 20 minutes. The dew point was slightly above average at the start of the day before becoming low later in the early hours while the dew point continued to fall during the rest of the early hours. In the morning, the dew point continued to fall and became very low from the early morning, slowly fell in the afternoon before becoming stable from the late afternoon while remaining very low. The relative humidity started the day slightly below average before sharply falling for a brief period at 2am following a wind change that fell 42% in 20 minutes to 40% and became very low. The relative humidity rose a little following this before falling slowly and remained very low during the rest of the early hours and in the early morning. The relative humidity was low in the morning, reduced to very low from the mid-afternoon to a low of 16% in the mid-afternoon and remained very low through to the evening while rising slowly. A light NNW to WNW wind change at the start of the day before increasing light to moderate winds developed from 2am, light to moderate WSW to NW in the morning and afternoon before light W to NW winds from the late afternoon.
• 27/9/20: Sunny. The temperature was briefly stable at times while generally falling at times in the early morning that fell from slightly warm at the start of the day to slightly cool in the early morning. The temperature was a little variable in the morning through to the maximum temperature reached in the mid-afternoon. In the late evening, the temperature fell slowly and became slightly cool. The dew point slowly rose in the first several hours of the day while remaining below 0 C and was very low before stabilising near 0 C later in the early hours. In the morning, the dew point remained very low while generally falling but was rather variable while remaining below 0 C. In the afternoon, the dew point was broadly stable and remained very low falling to a low of -5 C. In the mid-afternoon the dew point eased to low while the dew point rose before stabilising from the late afternoon moderately low. Relative humidity was very low that reached a maximum in the early morning of 55 % which eased temporarily to low during some of the time in the morning while the relative humidity fell and became low later in the morning. After falling to a low of 12% in the afternoon the relative humidity rose during the rest of the afternoon and during the evening easing to moderately low from the late afternoon. Light NNW to WSW winds in the first few hours of the day before mostly calm winds during the rest of the early hours. Light WSW to S winds in the morning before light and variable winds in the morning, N to NW in the early afternoon, ENE to SE from 2pm, E to SE later in the afternoon before S to ESE in the early evening before calm winds later in the evening.
• 28/9/20: Partly cloudy with Cu and Sc clouds. At the start of the day the temperature rose briefly before falling during the rest of the early hours. A slightly cool day and cool in the early afternoon. The temperature stopped rising in the late morning and became variable through to the mid-afternoon. From the late afternoon the temperature returned to near average. The dew point rose very slowly in the early hours moderately low before rising a little more quickly in the morning slightly below average before generally rising slowly later in the morning and early afternoon slightly below average before becoming stable during the rest of the afternoon and tonight slightly below average. Relative humidity was slightly below average early in the day, briefly moderately low in the early morning and near average from the morning. Calm winds early before S to SW winds shifted S to SE during this morning. Light SSW to ESE winds in the afternoon, E to SE in the afternoon, ESE in the late afternoon and SSE to SE early in the evening before calm winds during the rest of the evening.
• 29/9/20: Partly cloudy with Cu and Sc clouds. The temperature was stable or rose in the early hours with a slightly warm night before the temperature returned to near average in the morning. The minimum temperature was reached late in the previous evening and remained at or above the minimum temperature during the early hours. From later in the morning the temperature was cool, with the temperature very variable from the mid-morning to the mid-afternoon. The maximum temperature was reached in the middle of the day after generally rising slowly in the morning and became generally stable in the afternoon. From the late afternoon the temperature fell and returned to near average and slightly below average in the late evening. The dew point was stable in the early hours slightly below average before starting to rise in the morning, then fell slowly from the mid-morning slightly below average, became stable in the afternoon before falling later in the afternoon moderately low. In the evening, the dew point was stable and moderately low. Relative humidity was slightly below average with the relative humidity reaching the overnight maximum late in the previous evening before falling from the start of the day. Relative humidity was near average in the morning, slightly below average in the afternoon and was near stable, moderately low from later in the afternoon before easing to slightly below average later in the evening. Mostly calm winds early with some W to SW winds, then light SSW to WSW winds in the early morning then SSW to SSE winds this morning, ENE to SE winds later in the morning, ESE to SE in the afternoon, E to SE later in the afternoon and in the early evening before calm winds during the rest of the evening.
• 30/9/20: Partly cloudy with Cu and Sc clouds, cloudy in the afternoon with some Ci clouds in the morning. Slightly cool early in the day, near average from the morning and slightly warm in the evening. The temperature rose more slowly later in the morning, reached the maximum in the middle of the day, and fell slowly in the afternoon. The temperature was variable from the mid-morning to the mid-afternoon. Stable and moderately low dew point early in the day, generally rose in the morning and afternoon close to average then stabilised in the early evening before falling later in the evening close to average. Relative humidity was near average from early. The daytime minimum relative humidity was reached in the mid-morning before rising during the remainder of the day. Calm winds early, light SSW to SE winds in the morning became SE to NE later in the morning, ESE to NE in the early afternoon, E to NE during the rest of the afternoon, before ENE and NNE winds in the evening became calm later in the evening.

 

Station records for September 2020

NOTE: This is a summary of the aforementioned monthly records exceeded over a monthly basis. Additionally, it lists records that are the lowest or highest in at least 5 years. See end notes for more information about record periods.

 

Record high September mean daily minimum temperature in at least 5 years
Observed [C]	Most recent higher	Years of record	Monthly average
13.3	14.1 in 2010	11	12
Record high September daily minimum temperature in at least 5 years
Observed [C]	Most recent higher	Years of record	Monthly average
20.6 on 23rd at 5:17 AM	19 in 2009 on 22nd	11	12
Record high September mean daily minimum MSL pressure
Observed [hPa]	Old record	Years of record	Monthly average
1018.9	1017.2 in 2015	11	1015.5
Record high September mean daily maximum MSL pressure
Observed [hPa]	Old record	Years of record	Monthly average
1024	1022.9 in 2015	11	1021
Record low September mean MSL pressure
Observed [hPa]	Old record	Years of record	Monthly average
1021.4	1020.1 in 2015	11	1018.2
Record high September maximum MSL pressure in at least 5 years
Observed [hPa]	Most recent higher	Years of record	Monthly average
1030.4 on 8th at 8:30 AM	1030.7 in 2015 on 11th at 9:10 AM	11	1021
Record high September mean daily maximum dew point in at least 5 years
Observed [C]	Most recent higher	Years of record	Monthly average
16.2	16.7 in 2013	11	14.2
Record high September maximum dew point in at least 5 years
Observed [C]	Most recent higher	Years of record	Monthly average
21.6	22.1 in 2013 on 26th at 2:15 PM	11	14.2
Record low September mean daily maximum wind gust in at least 5 years
Observed [km/hr]	Most recent lower	Years of record	Monthly average
27.6	26.2 in 2011	9	24.8
Record low September mean daily maximum wind speed in at least 5 years
Observed [km/hr]	Most recent lower	Years of record	Monthly average
14.1	27.7 in 2012	9	10.3

 

Key records for September 2020

NOTE: These records are drawn from automatic data record for this site. See end notes for more information.

 

All time records

No records

 

Monthly records

Highest Minimum Temperature: 20.6 °C on 23 Sep 2020 at 5:17 am

 

Data summary tables for September 2020