Monthly Meteorological Report for Ferny Grove, Brisbane in May 2019 – above average temperatures and below average rainfall

During May overnight temperatures were above average and daytime temperatures were well above average. In the Brisbane area many of the official sites observed above average daytime and overnight temperatures. Some sites observed near average temperatures. Rainfall at Ferny Grove was 40% of the long term average which ranked historically as average. Across the Brisbane area below average rainfall totals were also observed. At Ferny Grove air pressure was well above average, mean relative humidity was below average, mean maximum relative humidity was below average, mean minimum relative humidity was well below average, mean dew point was near average, mean minimum dew point was below average, mean maximum dew point was near average, wind speed was near average, with zero thunderstorms (1 thunder day).

 

Temperature – well above average day-time and above average overnight temperatures

Monthly Mean Minimum Temperature: 13.1 ºC, 0.7 ºC above average and 1.6 ºC higher than same month in 2018. This is the third highest on record for May and the highest since 13.3 ºC in 2017. Many of the official sites in the Brisbane area measured above average mean minimum temperatures while a few sites were close to average. About half of the sites were close to average (within 0.5 ºC of the long term average). The remaining sites were between 0.6 ºC and 1.3 ºC above average and these were Beaudesert with the highest anomaly from the long term average (1.3 ºC above average and a mean minimum temperature of 10.7 ºC), Brisbane (0.6 ºC above average and 14.3 ºC), Brisbane Aero (0.5 ºC above average and 13.5 ºC), Cape Moreton Lighthouse (0.8 ºC above average and 17.3 ºC), Logan City Treatment Plant (0.7 ºC above average and 13.3 ºC) and Redcliffe (0.6 ºC above average and 14.9 ºC). The highest mean minimum temperature was 17.3 ºC at Cape Moreton Lighthouse. The sites measuring close to average mean minimum temperatures ranged between 0.4 ºC below average and 0.5 ºC above average with the inland sites observing many of these temperatures. The lowest mean minimum temperature was 9.8 ºC at Amberley (0.2 ºC below average) and the lowest anomaly from the long term average was Point Lookout at 0.4 ºC below average with an observed temperature of 16.4 ºC.

 

Monthly Mean Maximum Temperature: 24.7 ºC, 1.4 ºC above average and 0.4 ºC lower than same month in 2018. This is the third highest on record for May and the equal lowest since 24.7 ºC in 2017. Most of the official sites in the Brisbane area observed above average mean maximum temperatures though many sites were within 0.5 ºC of the long term average. The highest anomaly above the long term average was 1.6 ºC above average at Gatton with a mean maximum temperature of 25.4 ºC and the highest mean maximum temperature was 25.5 ºC at Amberley (1.4 ºC above average). The sites that were at least 0.6 ºC above average were Archerfield (24.7 ºC and 0.7 ºC above average), Cape Moreton Lighthouse (22.8 ºC and 0.9 ºC above average) and Redcliffe (24.1 ºC and 0.6 ºC above average). The remaining sites that were close to average which were the coastal sites measured mean maximum temperatures that were ranged between equalling the long term average and 0.4 ºC above average. The lowest mean maximum temperature was 22.8 ºC at Cape Moreton Lighthouse (0.9 ºC above average). The lowest anomaly from the long term average was 24.1 ºC at Beerburrum (equal to the long term average). Brisbane observed a mean maximum temperature of 24.9 ºC (0.4 ºC above average).

 

Mean Monthly Temperature: 18.9 ºC, 1.0 ºC above average and 0.5 ºC lower than same month in 2018. This is the third highest on record for May and the highest since 19.0 ºC in 2017.

 

Lowest Temperature: 4.4 ºC on 31 May 2019 at 6:14 AM. Same month in 2018 was 6 ºC. This is the lowest monthly and daily minimum temperature for May on record, exceeding the previous record of 5.4 ºC on 15 May 2015 at 4:47 AM. Official stations in the Brisbane area observed the lowest temperature of the month on the 31st at some sites and also on the 29th at some sites. The lowest was -1.8 ºC at Amberley on the 31st and the highest was 10.6 ºC at Cape Moreton on the 31st. The lowest temperature at Brisbane was 7.7 ºC on the 29th. Most sites experienced cool nights between the 6th and 12th and again at the end of the month.

 

Highest Temperature: 28 ºC at 2:31 PM on 8 May 2019. Same month in 2018 was 28.5 ºC. This is the fourth highest monthly maximum temperature for May on record, the highest since 29 ºC in 2016 on 3 May at 3:01 PM, the equal fifth highest daily maximum temperature for May and the highest since 28.5 ºC on 4 May 2018 at 1:23 PM. The official sites measured the highest temperature for the month on the 1st, 8th, 10th, and 27th. The lowest was 26.5 ºC at Cape Moreton on the 1st and the highest was 29.3 ºC at Gatton on the 10th. Brisbane observed its highest temperature of 27.6 ºC on the 8th. Above average daytime temperatures occurred at most sites during the first 10 days of the month, and a few days towards the end of the month. Many sites also recorded warm days between these two periods.

 

Lowest Maximum Temperature: 20.6 ºC at 2:04 PM on 31 May 2019. This is the fourth highest monthly May lowest maximum temperature on record, the lowest since 18.8 ºC in 2017 on 10 May at 12:00 AM, the equal twelfth lowest maximum temperature for May and the lowest since 19.8 ºC on 19 May 2017 at 1:52 PM. This month in 2018 was 21.8 ºC. Official stations in the Brisbane area measured the coolest day at all sites on the 31st. These ranged between 19.7 ºC at Beerburrum and Brisbane Aero on the 31st and 21.2 ºC at Amberley and Gatton on the 31st. The lowest maximum temperature at Brisbane was 20.6 ºC on the 31st. In the Brisbane area official sites measured cool days mostly during the last few days of the month and to a lesser extend at some sites during the middle of the month.

 

Highest Minimum Temperature: 19.4 ºC on 4 May 2019 at 6:02 AM. This is the second highest monthly May highest minimum temperature on record, and the highest since the record high of 21.2 ºC in 2016 on 1 May at 6:31 AM, the third highest daily minimum temperature for May and the highest since 19.7 ºC on 3 May 2016 at 5:38 AM. This month in 2018 was 18.1 ºC. Official stations in the Brisbane area measured the warmest night at some sites on the 4th and at some sites on the 2nd and 3rd. These ranged between 18.1 ºC at Gatton and Amberley on the 4th and 21.8 ºC at Cape Moreton Lighthouse on the 2nd. The highest minimum temperature at Brisbane was 20.2 ºC on the 4th. In the Brisbane area warm nights were experienced during the first four days of the month and much of the second half of the month, except for cool nights during the last few days of the month.

 

Monthly Mean Minimum Grass Temperature: 11.6 ºC (3.4 ºC lower than same month in 2018)

 

Lowest Minimum Grass Temperature: 1.8 ºC on 31 May 2019 (2.1 ºC lower than same month in 2018). This coincided with the lowest minimum temperature of 4.4 ºC for the month.

 

Highest Minimum Grass Temperature: 18 ºC on 4 May 2019 (1 ºC higher than same month in 2018). This coincided with the highest minimum temperature of 19.4 ºC for the month.

 

Highest Minimum Grass Temperature Depression: 3.0 ºC on 29 May 2019 with a minimum grass temperature of 8.4 ºC and an air temperature of 11.4 ºC.

 

Lowest Minimum Grass Temperature Depression: 0.5 ºC on 25 May 2019 with a minimum grass temperature of 11.4 ºC and an air temperature of 11.9 ºC.

 

Minimum temperatures were above average during much of the month, especially at the start of the month. Also there were some cool nights during the month but it was predominately warm. The month started with above average temperatures being 6 ºC to 7 ºC above average during the 1st to 4th, except for 4 ºC above average on the 3rd. It was then cooler with the 5th to 8th being 1 ºC to 2 ºC below average and the 8th was near average. The 9th was 3 ºC below average, while the 11th was 1 ºC above average and the 12th was 4 ºC below average. A period of above average temperatures followed between the 13th and 21st of 3 ºC to 4 ºC above average, though it was 2 ºC above average on the 18th and 19th. The 22nd, 24th and 26th was near average and the 23rd and 25th was 1 ºC below average. From 27th a cool period followed with the 27th being 2 ºC below average, the 28th 3 ºC below average, the 29th 1 ºC below average, the 30th was 6 ºC below average and the lowest temperature of the month of 4.4 ºC occurred on the 31st and was 8 ºC below average.

 

During May maximum temperatures were above average on most days with very few temperatures that were near or below average. The month started with a warm period until the 10th except for the 4th being near average. During these days maximum temperatures were 2 ºC to 3 ºC above average, increasing to 4 ºC to 5 ºC above average on the 8th to 10th. It then cooled to 1 ºC below average on the 11th, 1 ºC above average on the 12th and close to average on the 13th. The 14th to 16th was 1 ºC to 2 ºC above average cooling to close to average on the 17th and 18th. The 19th was 2 ºC above average and the 20th and 21st was 1 ºC above average. The 23rd to 25th was 1 ºC above average, warming to 4 ºC to 5 ºC on the 26th and 27th. The 28th was 1 ºC below average, close to average on the 29th and 30th and 3 ºC below average on the 31st.

 

Heatwave Conditions (Maximum temperatures): Nil

 

MSL pressure – well above average air pressure

Monthly Mean Minimum MSL Pressure: 1019.0 hPa (1 hPa higher than same month in 2018). This is the highest on record for May exceeding the previous record high of 1018.2 hPa in 2014.

 

Monthly Mean Maximum MSL Pressure: 1023.1 hPa (0.2 hPa higher than same month in 2018). This is the highest on record for May exceeding the previous record high of 1022.9 hPa in 2018.

 

Monthly Mean MSL Pressure: 1021.1 hPa (2.8 hPa above average, 0.6 hPa higher than same month in 2018). This is the highest on record for May exceeding the previous record high of 1020.5 hPa in 2014.

 

Lowest MSL Pressure: 1011.3 hPa on 27 May 2019 at 3:20 PM. The same month in 2018 saw 1011.5 hPa. This is the fourth lowest monthly minimum air pressure for May, the lowest since the record high of 1005.8 hPa in 2016 on 27 May at 2:55 PM, the twenty-fifth lowest daily air pressure for May and the lowest since 1009.4 hPa on the 28 May 2016 at 2:01 PM.

 

Highest MSL Pressure: 1028.6 hPa on 19 May 2019 at 8:44 AM. The same month in 2018 saw 1028 hPa. This is the fourth lowest May monthly maximum air pressure, the highest since 1028.9 hPa in 2017 on 5 May at 8:27 AM, the thirteenth highest daily maximum air pressure for May and the highest since 1028.9 hPa on 5 May 2017 at 8:27 AM.

Note: Air pressure measurements are being closely monitored to maintain its accuracy. Over the month of May, a difference of 0.06 hPa lower compared to the official BoM Brisbane site – No. 040913 was observed which is deemed optimum.

 

Relative Humidity –below average mean humidity, below average mean maximum humidity and well below mean minimum humidity

Monthly Mean Minimum Humidity: 41.7 % (8.8 % lower than same month in 2018 and 13.4 % below average). This is the lowest on record for May exceeding the old record of 47.1 % in 2016.

 

Monthly Mean Maximum Humidity: 85.6 % (6.6 % lower than same month in 2018 and 4.4 % below average). This is second lowest on record for May and the lowest since 80.5 % in 2015.

 

Monthly Mean Humidity: 63.6 % (7.7 % lower than same month in 2018 and 8.9 % below average). This is the lowest on record for May exceeding the previous record of 67.6 % in 2016.

 

Lowest Humidity: 7 % on 31 May 2019 at 2:05 PM (27 % lower than this month in 2018). This is the lowest monthly and daily minimum humidity for May on record exceeding the old record of 26 % on 25 May 2016 at 1:21 PM.

 

Highest Humidity: 95 % on 22 May 2019 at 7:47 AM (3 % lower than this month in 2018). This is the second lowest monthly May high humidity on record and the lowest since the current record low of 93 % in 2015 on 1 May at 5:20 PM.

 

Dew point –near average mean, below average mean minimum and near average mean maximum dew point

Monthly mean minimum dew point: 7.1 ºC (3.4 ºC below average). This is the lowest monthly mean minimum dew point for May on record exceeding the old record of 9.1 ºC in 2012.

 

Monthly mean maximum dew point: 14.5 ºC (0.4 ºC above average). This is the third lowest monthly mean maximum dew point for May and the lowest since 13.2 ºC in 2011.

Monthly mean dew point: 10.8 ºC (1.9 ºC below average). This is the lowest monthly mean dew point for May on record exceeding the previous record of 11.8 ºC in 2012.

 

Lowest dew point: -16.7 ºC on 31 May 2019 at 2:10 PM. This is the lowest monthly dew point for May, exceeding the previous record of 0.3 ºC on 11 May 2018 at 11:50 AM.

 

Highest dew point: 20.7 ºC on 1 May 2019 at 10:06 AM. This is the second highest monthly maximum dew point on record for May, the highest since 20.7 ºC in 2016 on 1 May at 3:19 PM, the fourth highest daily dew point for May and the highest since 20.9 ºC on 9 May 2018 at 2:37 PM.

 

Wind Speed – near average wind speed

Maximum Wind Gust: 52 km/hr on 11 May 2019 at 12:49 AM. This is the third highest May maximum wind gust and the lowest since 50.4 km/hr in 2017 on the 18 May at 10:20 AM. The maximum wind gust this month last year was 82.9 km/hr. This is the third highest daily wind gust on record for May and the highest since 82.9 km/hr on 12 May 2018 at 9:14 AM.

 

Maximum Wind Speed: 26 km/hr on 11 May 2019 at 12:52 AM (Moderate Force Wind). This is the third lowest monthly maximum wind speed for May, the lowest since 17.2 km/hr in 2012 on 29 May at 11:50 AM, the thirteenth highest daily wind speed on record for May and the highest since 33.7 km/hr on 12 May 2018 at 8:48 AM.

Wind Run: 2420 km (1052.4 km higher than same month in 2018), 1373.9 km above average and 56.8 % above average. This is the highest on record for May total wind run exceeding the old record of 1425.3 km in 2015.

 

Monthly Mean Wind Speed: 3.3 km/hr (2.5 km higher than this month in 2018), 1.9 km/hr above average and 35.7 % above average (approx. 5 % below average accounting for measuring equipment changes). This is the highest on record for May exceeding the old record of 2.4 km/hr in 2017.

 

Daily Mean Maximum Wind Gust: 23.2 km/hr (4.3 km/hr lower than this month in 2018), 1.2 km/hr below average and 4.7 % below average. This is the fifth highest daily mean maximum wind speed on record for May and the lowest since 20.9 km/hr in 2014.

 

Daily Mean Maximum Wind Speed: 11.6 km/hr, 3.7 km/hr lower than this month last year, 0.7 km/hr below average and 2.9 % below average. This is the third lowest daily mean maximum wind speed on record for May and the lowest since 8.5 km/hr in 2012.

 

Dominant Direction: S (S this month last year).

 

Rainfall –below average (above median) rainfall

Monthly Rainfall Total: 41.4 mm (61.6 mm below average) and 40.88 % of the long term average. This total is in decile 4/ 38th percentile which ranks as average and 5.9 mm below the long term median (88 % of long term median). This total is lower than this month last year which was 47.3 mm, the thirteenth lowest on record for May and the lowest since 20.7 mm in 2016.

 

In the Brisbane area all the main official sites measured below average rainfall totals though some sites ranked historically as near average. Rainfall totals ranged between 32 and 66 % of the long term average. The sites ranking close to average rainfall totals ranged between 22.6 mm at Amberley and 60.4 mm at Beerburrum. These were between 41 % (Brisbane Aero measuring 40 mm) and 53% of the long term average (Logan City Treatment Plant measuring 53.1 mm). The remaining sites ranked as low and ranged between 27 % of the long term average at Beaudesert (13.8 mm) and 66% of the long term average at Point Lookout (96 mm). The lowest rainfall total of the main sites was 13.8 mm at Beaudesert while the highest rainfall total of all sites was 96 mm at Point Lookout. Brisbane observed a total rainfall of 25.4 mm (41 % of the long term average which ranked as low). Lowood Don St observed its lowest total rainfall of 6.9 mm in 35 years.

 

In the Brisbane area there were widespread showers at the start of the month due to the influence of a surface trough. Onshore wind flow persisted throughout May with showers as a result with mostly low daily totals.

Number of Rain Days (0.1 mm or greater): 16 days, 7 greater than this month last year and 7.4 days above average. This is the third highest on record and highest since 17 days in 2017.

 

Highest Daily Total: 10.3 mm on 5 May 2019. This is the sixth lowest May daily rainfall on record on monthly basis, the lowest since 8.5 mm in 2014 which occurred on the 3 May, the fifty-first highest May daily rainfall on record on daily basis and the highest since 29.1 mm on 9 May 2018. The highest daily total in the Brisbane area of all official sites was 37 mm at Peachester on the 1st May 2019.

 

Monthly Rainfall Total – (automatic gauge) 24 hours to 9am: 30.4 mm (3.2 mm less than the site official standard gauge and within 9.5%). Highest daily total of automatic gauge, (24 hours to 9am): 9 mm on 5 May 2019, (24 hours from midnight): 11.2 mm on 20 May 2019

 

Note: This automatic gauge for the month of May, meets the accuracy (of +/- 10% of the standard gauge) at + 9.5%.

 

On the 1st was early morning drizzle and occasionally in the morning with 7.9 mm measured on the 1st. This rainfall cleared in the late morning with early morning drizzle on the 2nd with 0.5 mm measured on the 2nd. On the 3rd there were early light showers with 1.4 mm measured on the 3rd. In the middle of the day were light brief showers until mid afternoon with 0.3 mm measured on the 4th. In the mid afternoon were light to moderate showers, briefly heavy with some thunder, followed by occasional light rain clearing early evening. 10.3 mm was measured on the 5th. In the early evening on the 10th there were moderate to heavy showers before clearing with 5.3 mm measured on the 11th. On the 13th was early to mid morning drizzle, clearing with some drizzle in the afternoon. 0.9 mm was measured on the 13th and 0.9 mm on the 14th. On the 14th was early afternoon drizzle or light shower, followed by early morning drizzle and light showers clearing on the 15th. 0.6 mm was measured on the 15th. On the 16th there were light few drops in the afternoon, followed by a light shower in the evening with brief moderate falls. On the next day early light showers and drizzle cleared with 2.5 mm measured. In the evening of the 18th were light evening drizzle and light showers, and a light early morning shower with 0.2 mm measured on the 19th. In the evening was a light shower and light showers in the early morning on the 20th brought 3.5 mm on the 20th. In the mid to late afternoon there were light to moderate frequent showers with 7.1 mm on the 21st.

 

There was 0 days with falls of at least 25 mm (equal to same month in 2018) with 9 days of less than 1 mm (5 greater than same month in 2018).

 

Highest rainfall rate was 111.8 mm/hr on the 4 May 2019 at 2:11 PM. This is the highest monthly and daily rainfall rate for May exceeding the previous record high of 62.2 mm/hr on 1 May 2015 at 5:00 PM.

 

The highest hourly rainfall total was 9 mm on the 4 May 2019 at 2:29 PM. This is the fourth lowest highest May maximum hourly rainfall, the lowest since 4.1 mm in 2017 on 19 May at 0:20 AM, the fifth highest daily maximum hourly rainfall for May and the highest since 11.4 mm on 8 May 2018.

 

Number of severe thunderstorms: 0

 

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

 

Number of thunder days: 1 day

 

Number of nearby storms: 0

 

Severe thunderstorms in the Brisbane area: Nil

 

Remarks for month

• On the 1st to 3rd the temperature was variable in the late morning and afternoon
• Moderately high dew point in the morning of the 3rd with high daytime relative humidity
• Cloudy on 4th with a gusty W to NW wind change in the afternoon. A rapid and brief fall of dew point and temperature with the change
• Sunny on 5th to 11th
• On the 5th was low afternoon dew point and low daytime relative humidity
• Low dew point and relative humidity during much of the 6th
• Low dew point in afternoon of 7th before rising quickly in late afternoon. A warm day
• Hot on 8th with low daytime relative humidity
• On the 9th it was warm with low relative humidity and low dew point over much of the day
• Warm on the 10th with dew point becoming moderately high. A fast fall in dew point from 7 pm with a light to moderate and gusty WNW to WSW wind change
• Very dry air with low dew point and relative humidity on the 11th with light to moderate and gusty W to WNW winds early then easing
• A cool morning on the 12th with low dew point easing to near average
• On the 13th was a warm morning with near average and variable relative humidity
• On the 14th was a warm morning and morning and afternoon variable temperature
• Warm morning on 15th to 17th
• Moderately high dew point at times on 16th and variable temperature later in morning and in afternoon
• Moderately high dew point and relative humidity over much of the day on the 17th
• Quite variable temperature on 18th during the morning and afternoon with a moderate temperature drop in early afternoon. Moderately high dew point and relative humidity over much of the day also.
• Cloudy becoming partly cloudy on 19th with moderately high dew point in late morning
• A warm morning on 20th with moderately high dew point over much of the day with high relative humidity
• Moderately high dew point til early afternoon on the 21st
• Increasing clouds on the 22nd with a temperature drop in the late morning with moderately high dew point during the morning
• Moderately high dew point in morning of 23rd with variable temperature over much of the day
• Variable temperature in morning and afternoon of 24th
• Moderately high dew point in early morning of 25th
• On the 26th the dew point was moderately high at times with moderately low daytime relative humidity
• Sunny on the 27th with some high clouds. Moderately high dew point in morning and low later in the day. Dry air produced low relative humidity
• A cool morning on 28th
• Sunny with low relative humidity and dew point on 28th and 29th
• Sunny on 30th, a cold morning also with a light breeze causing the temperature to rise in the early morning. Very low dew point improving temporarily during the day with low relative humidity
• Sunny with a cool morning and cold day on 31st. Very dry air with low dew point and relative humidity.
• 13 Days of Dew during the month: light – (5th, 9th, 12th, 18th and 27th), Moderate – (7th, 8th and 22nd to 26th)

 

Weather influences

• On the 1st a high pressure system in the Tasman Sea remained slow moving and extended a ridge along the east Queensland coast. This extended a moist onshore wind flow
• On the 2nd the firm ridge remained in place before the ridge started to weaken on the 3rd as the high pressure system shifted eastwards towards New Zealand
• A surface trough shifted eastwards over the state on the 4th which cleared the east coast in the late evening with rainfall occurring associated with the passage of this trough. A high pressure system over South Australia extended a ridge and dry west to south-westerly wind change in the wake of the trough
• The trough cleared the east coast early on the 5th allowing the high pressure system over South Australia to extend a ridge and dry air mass over the state
• On the 6th the high pressure system started to weaken but continued to extend a ridge over a dry and stable air mass across the state
• The 7th saw a weak high pressure system over eastern Australia to extend dry air and settled weather across much of the state
• A weak pressure gradient extended on the 8th and maintained the dry and stable air mass. A surface trough shifted east over southern Queensland with a west to south-westerly wind change
• On the 9th the weak pressure gradient remained in place maintaining the dry and stable air mass
• Dry air extended over much of the state on the 10th before a cold front swept eastwards clearing the east coast in the evening. This brought some instability with its passage, followed by a high pressure system over southern Australia that extended a dry air mass and a west to south-westerly wind change
• The cold front cleared off the east coast early on the 11th, while the high pressure system extends the firm ridge and a cool and dry air mass with gusty winds
• On the 12th the high pressure system remained over southern Australia and extended a firm ridge across the state maintaining a cool and stable air mass. Winds started to tend onshore also as the high pressure system shifted eastwards
• On the 13th the high pressure system moved further east into the Tasman Sea and maintained the ridge across the state with moist onshore winds along the east coast
• A high pressure system in the Great Australian Bight and the Tasman Sea high pressure system on the 14th maintained the ridge with moist onshore flow continuing along the east coast
• A high pressure system became slow moving over south-eastern Australia and maintained the ridge across the state and onshore winds along the east coast on the 15th
• On the 16th and 17th the high pressure system started to shift eastwards into the Tasman Sea and extended over south-eastern Australia maintaining the moist onshore flow and high pressure ridge
• On the 18th to 20th the ridge remained in place with onshore winds along the east coast as the high pressure system became slow moving in the western Tasman Sea
• On the 21st and 22nd the high pressure system slowly shifted eastwards over the state and maintained the ridge along the east coast with resulting onshore wind flow but with decreased moisture
• The ridge started to weaken on the 23rd as the high pressure system shifted eastwards over the Tasman Sea, though the onshore winds continued
• Onshore winds persisted on the 24th to 26th as the high pressure system shifted further east across the Tasman Sea and the ridge weakened further
• The ridge along the east Queensland coast decayed on the 27th as a surface trough shifted east over the south of the state and shifted off the southern Queensland coast. A cooler and dry air mass followed in the wake of the trough as a new high pressure system shifted east wards over southern Australia
• A cool and dry air mass extended eastwards as the surface trough shifts offshore on the 28th to 30th and the high pressure system extended a ridge through the state with a cool and dry air mass
• A cold front shifted eastwards over southern Queensland later in the day on the 30th delivering further cool air
• On the 31st the high pressure system remained slow moving and maintained the cool and dry air mass and continued to extend the ridge along the east coast

Daily weather notes

• 1/5/19: Early morning drizzle and occasionally in the morning, clearing late morning. Partly cloudy with cu clouds. Near average dew point rising during the morning before falling in the late morning briefly, then stable, sharply falling in the mid afternoon and then rising slowly for the rest of the day. Variable temperature in late morning and afternoon. Light and variable winds early shifting SE to ENE from late morning.
• 2/5/19: Early morning drizzle clearing. 2 brief light showers in the mid afternoon. Some light showers in the evening. Partly cloudy with cu and sc clouds. Variable temperature during the morning and afternoon. Near average dew point rising and then falling during the morning and then variable but near average for rest of the day. Light S to SW winds in early morning, SE to E winds mostly from mid morning with some N to NE winds in the evening.
• 3/5/19: Early morning light showers. Brief light showers in middle of the day until mid afternoon. Near average dew point rising during the morning, reaching moderately high during the morning and becoming generally stable. Variable temperature in the morning and afternoon. High relative humidity especially during the day. Light and variable winds early becoming generally S to SW and then generally SE to NE from mid morning and N to NE from late afternoon.
• 4/5/19: Brief light shower in the mid morning. Light to moderate showers, briefly heavy with some thunder in mid afternoon, followed by occasional light rain clearing early evening. Cloudy with cu clouds with ns during the day also. High dew point early before falling for the rest of the day from the afternoon reaching close to average late in the day. Light N to NE winds before a gusty W to NW wind change from the afternoon. Rapid and brief fall of dew point and temperature with the change.
• 5/5/19: Fine and sunny. Near average but falling dew point becoming low in the afternoon, but rose in the early morning. In the late afternoon the dew point rose close to average before falling in the evening. Low average daytime relative humidity. Light W to NW becoming SSW to W early, then NNW to SW from early morning and easing N to NW in the evening.
• 6/5/19: Fine and sunny. Low dew point over most of the day, easing to near average briefly in the mid morning and from the late afternoon. Low daytime relative humidity. Light SW to NW winds early, WSW to S from early morning, variable WNW to SE (through S) in the afternoon and easing SE to NW winds into the early evening.
• 7/5/19: Fine and sunny. Near average dew point rising during the morning and remaining near average, before falling from morning becoming low in the afternoon, and then quickly rising to near average in the late afternoon and stable for rest of the day. A warm day. Low day relative humidity. Light S to W winds early, becoming mostly NW to NW with some W to SW winds becoming N to NW in the evening.
• 8/5/19: Fine and sunny. Some limited cu cloud development during the day. A hot day. Near average dew point early increasing during the morning, before generally falling from mid morning, though rose briefly in the early afternoon. In the late afternoon the dew point rose slightly before falling slowly near average. Low daytime relative humidity. Light NNW to WNW winds early, then NNE to W winds from early morning and shifting WNW to WSW in the evening.
• 9/5/19: Fine and sunny with some cu clouds. Below average dew point early, rising slightly during the morning before falling and then rising to near average from mid afternoon and stabilising in the evening. A warm day. Low daytime relative humidity. Light SSE to SW winds early, becoming variable later in the morning and ENE to NE and easing in late afternoon and early evening.
• 10/5/19: Fine and sunny until moderate to heavy brief showers in the early evening before clearing. A warm day. Near average early before rising from the morning slowly becoming moderately high from late morning. Dew point fell from 7 pm quickly with wind change. Near average relative humidity, and falling quickly in the evening also. Light and variable winds early before N to ENE winds from the morning before a WNW to WSW wind change at 7 pm with light to moderate and gusty winds.
• 11/5/19: Fine and sunny. Very low and stable dew point over the entire day. Very low relative humidity, improving in the evening. Light to moderate and gusty W to WNW winds early, followed by light and variable winds in early morning, NW to SW in the early morning, WNW to SSW from mid morning and WSW to NW in late afternoon.
• 12/5/19: Fine. A cool morning. Low dew point increasing during the day, reaching close to average from the late afternoon. Light S to SW winds from early morning after variable winds early and easing winds in the evening.
• 13/5/19: Early to mid morning drizzle, clearing with some drizzle in the mid afternoon. Near average dew point generally slowly rising during the day. A warm morning. Near average and but variable daytime relative humidity. Light SSW to S winds early before W to NW winds veering during the early morning to S to ESE from mid morning. Winds backing to NNE to NE in late evening.
• 14/5/19: Early afternoon drizzle or light shower. Partly cloudy with cu clouds. A warm morning. Variable temperature during the morning and afternoon. Near average and stable dew point and falling slowly in the evening. Light SSW to W winds early, becoming S to SW from early morning, SW to SE from early afternoon, S to SE in late afternoon before SSE to ESE winds easing in the evening.
• 15/5/19: Early morning drizzle and light shower clearing. Partly cloudy with cu clouds. A warm morning. Near average dew point rising during the morning and generally falling slowly from later in the morning. Light and variable winds between WNW and SSW early before S to SW in early morning and S to SE from mid morning. Light SSE to SW winds in the evening.
• 16/5/19: Light few drops in the afternoon. Evening light shower with brief moderate falls. Partly cloudy with cu clouds. A warm morning with the temperature variable later in the morning and into the afternoon. Variable dew point moderately high at times during the morning and later in the afternoon. Light and variable winds early becoming SE to SW from the early morning, SSE to ESE in the afternoon and WSW to SE in the evening.
• 17/5/19: Early light showers and drizzle clearing during the mid morning. Moderately high dew point and generally stable before falling during the evening close to average. A warm morning and the temperature was variable during the morning and afternoon. Moderately high daytime relative humidity. Light S to WSW winds early becoming SW to SE from the late morning before light and variable winds in the evening.
• 18/5/19: Fine until light evening drizzle and light showers. Partly cloudy with sc and cu clouds. The temperature was quite variable during the morning and afternoon with a moderate drop in the temperature in the early afternoon. The dew point rose during the morning, moderately high from late morning to the afternoon before falling from the late afternoon. Moderately high and variable daytime relative humidity. Light and variable winds early, SW to SE from early morning and SE to NE in afternoon.
• 19/5/19: Fine except for light early morning shower and a light shower in the evening. Cloudy with cu clouds in the morning and partly cloudy from the late morning. Near average and rising dew point early, becoming moderately high in the late morning, which then quickly fell in the late morning to near average and was generally stable for the rest of the day. Light and variable winds becoming S to SE from the morning and S to SW in the evening.
• 20/5/19: Light showers in the early morning. Mid to late afternoon light to moderate frequent showers. Partly cloudy with cu, sc and ac clouds and cloudy from the middle of the day with cu clouds. Near average dew point rising during the morning becoming moderately high from the mid morning. From the middle of the day the dew point slowly fell remaining moderately high. A warm morning. High relative humidity. Light and variable winds early and late becoming S to SE from early and light.
• 21/5/19: Fine and partly cloudy with cu clouds. Moderately low dew point rising during the morning and then falling quickly in the early afternoon and then slowly for the rest of the day becoming near average in the evening. Light and variable winds mostly SSW to W before SSW to SW winds in the early morning and SE to NE from mid morning to mid afternoon easing in the evening.
• 22/5/19: Fine. Clear early with cu cloud developing during the morning, becoming partly cloudy from late morning and cloudy at times. The temperature dropped in the late morning before slowly rising in the afternoon and then falling later in the afternoon. Near average dew point rising to moderately high during the morning, falling quickly in late morning and generally stable and near average thereafter. Light WSW to SSW winds early becoming SSW to SE from early morning and easing in evening.
• 23/5/19: Fine and partly cloudy with cu clouds. Variable temperature in the morning and afternoon. Near average dew point rising to moderately high during the morning, quickly falling to near average in early afternoon and generally falling slowly for the rest of the day. Light S to SW winds early, becoming S to SE during the mid morning and E to SE from late morning easing in the evening.
• 24/5/19: Fine, clear sky early and partly cloudy from the morning with cu clouds. Variable temperature in the late morning and afternoon. Near average dew point early, rising during the morning, falling in the early afternoon and then stable but falling slowly for the rest of the day. Light S to SW winds in early morning, SW to SE from late morning and E to NE in late afternoon and easing in the evening.
• 25/5/19: Mostly sunny and fine. Ci and cs clouds from the morning with some ac and cc clouds. Near average dew point rising to moderately high in the early morning, then fell from the mid morning to near average in the afternoon and generally stable for the rest of the day. Light S to SW winds in the early morning, E to SE in the mid morning, SE to NNE from late morning and light and variable in the evening.
• 26/5/19: Fine and partly cloudy. Cu clouds developing from the morning with some ac clouds. Near average dew point rising during the morning to moderately high and falling generally from the mid morning to near average, rising again later in the afternoon to moderately high and falling from the late afternoon. Moderately low daytime relative humidity. Light WSW to NW winds early, light and variable winds from the early morning, tending ESE to NE in late afternoon before becoming variable.
• 27/5/19: Fine and sunny. Mostly cloud free with some ci and ac clouds. Near average dew point early, rising to moderately high during the morning before falling from the late morning becoming low in the afternoon and stabilising. The dew point fell further later in the evening well below average. Very low daytime and evening relative humidity as a result of the dry air. Light and variable winds becoming W to NNW and from the late afternoon light NW to W winds.
• 28/5/19: Fine and sunny with only limited cu clouds. A cool morning. Very low dew point over the entire day, improving slightly early in the day, before falling during the morning. Similarly low relative humidity especially during the daylight hours. Light SW to NW winds early, WNW to SW in the early morning and W to NNW winds from mid morning.
• 29/5/19: Fine and sunny with no cloud development. Very low dew point was stable generally until rising slightly in the late afternoon and then stable for the rest of the day. Low relative humidity. Light NNE to WNW winds with some W to SW winds in the morning and afternoon.
• 30/5/19: Fine, sunny and free of clouds. Very low dew point over the day improving slightly during the morning and falling further from the afternoon. A cold morning early, though the temperature rose in the early morning due to a light breeze. Low relative humidity especially in the day-light hours, with a brief fall in the early morning. Light W to NNW winds early, becoming SW to WNW from the early morning and WSW to W from late afternoon.
• 31/5/19: Fine and sunny. Some sc clouds from the morning. A cold morning and a cool day. Low dew point early falling further during the morning and became extremely low (-16 C) before rising from the late morning and then stabilising from late afternoon whist remaining low. Relative humidity was similarly below average falling to a low of 7%. Light NNW to WSW winds early, followed by winds between N and SSW from early morning, N to NE winds in late afternoon and slight NW winds in evening.

Station records for May 2019

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.

 

 

Key records for May 2019

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

 

 

 

Data summary tables for May 2019