August saw very cool nights with the mean minimum temperature well below average and the lowest in 5 years. Most of the official sites also measured well below mean minimum temperatures, especially the inland sites. Days were warm with an above average mean maximum temperature recorded for the month. All the official sites also observed similarly above average monthly mean maximum temperatures. Rainfall was below average but ranked historically as average. The official sites also measured below average rainfall especially away from the coast. Air pressure was below average, mean relative humidity was record low, below average mean maximum relative humidity, well below average mean minimum relative humidity, below average mean dew point, below average mean minimum dew point, close to average mean maximum dew point, record high monthly wind gust, below average wind speed and 1 nearby thunderstorm.

 

Temperature – Cold nights and warm days

Monthly Mean Minimum Temperature: 6.1 ºC, 2.9 ºC below average and 1.7 ºC lower than same month in 2017. This is the second lowest on record and the lowest since the current record of 6 C in 2012. Most official sites measured below average mean minimum temperatures. The exception to this was Point Lookout which was on average (at 14.2 C) and Cape Moreton Lighthouse at 0.9 C above average (at 14.9 C) and was the highest mean minimum temperature of all the official sites. Inland sites measured mean minimum temperatures of between 1.8 C below average at Archerfield (6.3 C) and 3.3 C below average at Amberley which was also the lowest mean minimum temperature at 2.9 C. Amberley measured a new record low minimum temperature exceeding 3.1 C in 2008, while Gatton and Archerfield were the lowest in at least 20 years. Beaudesert was 2.8 C below average at 3.8 C and Gatton was 1.3 C below average at 3.7 C. The remaining sites closer to the coast measured mean minimum temperatures of 0.9 to 1.2 C below average. The site at Brisbane observed a mean minimum temperature of 9.6 C which was 1.2 C below average.

 

Monthly Mean Maximum Temperature: 24.5 ºC, 1.4 ºC above average and 0.1 ºC lower than same month in 2017. This is equal third highest on record equalling 2013 and the lowest since 22.9 C in 2016. All official sites measured above average mean maximum temperatures and were 1 to 1.3 C above average except for Redcliffe which was 0.6 C above average at 9.6 C. All the inland sites measured mean maximum temperatures of between 1.8 C above average at Beaudesert which was 24.9 C and Amberley at 2.5 C above average and was the highest mean maximum temperature of 25.3 C. Archerfield was 24.6 C at 1.9 C above average and Gatton was 24.8 C which was 2.4 C above average. Brisbane recorded a mean maximum temperature of 24.3 C (1 C above average).

 

Mean Monthly Temperature: 15.3 ºC, 0.7 ºC below average and 0.4 ºC higher than same month in 2017. This is the second lowest on record and the lowest since the record low of 14.4 in 2012.

 

Lowest Temperature: 2.0 ºC at 6:29 AM on 14 August 2018. Same month in 2017 was 3.1 ºC. This is the second lowest monthly minimum temperature for August, the lowest since 0.7 ºC on 3 August 2012, the fifth lowest daily monthly minimum temperature and the lowest since 1.1 C on 8 August 2012. Official stations in the Brisbane area recorded the lowest temperature for the month on the 21st at many sites and at some sites on the 1st, 9th, 14th, 20th and 22nd. The lowest was -3.8 ºC at Beaudesert on 21st and the highest was 10.4 ºC at Point Lookout on the 20th and 21st. The lowest minimum temperature at Brisbane was 5.2 C on the 22nd. During the middle of the month there was a cold burst of minimum temperatures with below zero degree overnight temperatures at the inland sites.

 

Highest Temperature: 29.4 ºC at 1:46 PM on 17 August 2018. Same month in 2017 was 31.6 ºC. This is the third highest monthly maximum temperature for August, the lowest since 25.2 C in 2016 and ninth highest daily maximum temperature for August on record being the highest since 30.6 C on 17 August 2017 at 3:07 PM. Official stations in the Brisbane area measured the highest temperature for the month on 16th and 17th. The highest temperatures ranged between 25.3 ºC at Cape Moreton Lighthouse on the 17th and Amberley with 30.1 ºC on the 16th. The highest temperature at Brisbane was 29.5 C on the 16th. During most of the second half of the month there were warm and sunny days. The warmest days occurred during the middle of the month, with warm spells at the start and the end of the month.

 

Lowest Maximum Temperature: 19.5 ºC at 4:25 PM on 26 August 2018. This is the fourth lowest monthly August lowest maximum temperature, ninth lowest August daily maximum temperature on record and the lowest since 19.3 C on 3 August 2016 at 2:14 PM. This month last year was 21.6 ºC. Official stations in the Brisbane area measured the coolest day at most sites on the 26th and at Gatton on the 20th. These ranged between 19 ºC at Brisbane Airport, Logan City Treatment Plant and Redcliffe on the 26th and 20.8 ºC at Amberley and Beerburrum on the 26th. Brisbane’s lowest maximum temperature was 20.2 ºC on the 26th.

 

Highest Minimum Temperature: 10.6 ºC at 12:30 AM on 26 August 2018. This is the lowest monthly highest minimum temperature for August and thirty-second highest minimum temperature. The old record was 12.9 C on the 17 August 2017 at 7:10 AM. This month last year was 12.9 ºC. Official stations in the Brisbane area measured the warmest night on the 6th and 7th at many sites and at some sites on the 25th and 26th. These ranged between 9.3 ºC at Beaudesert on the 26th and 21.1 ºC at Point Lookout on the 25th. The highest minimum temperature at Brisbane was 15.9 C on the 7th. Warm nights on the 25th and 26th produced a new record high for daily August minimum temperature at Point Lookout. Warm nights were also present at the start of the month on several nights.

 

Monthly Mean Minimum Grass Temperature: 4.9 ºC (1.2 ºC lower than same month in 2017)

 

Lowest Minimum Grass Temperature: 0.9 ºC on 14 August 2018 (1 ºC lower than same month in 2017). This was with an air temperature of 2.4 ºC.

 

Highest Minimum Grass Temperature: 9.0 ºC on 26 August 2018 (2.7 ºC lower than same month in 2017). This coincided with the highest minimum of 10.6 C for the month.

 

Minimum temperatures were mostly near or below average with only a few below average nights. On the 1st it was 6 C below average, easing to 3 C below average on the 2nd and further to 1 C below average on the 3rd. On the 4th it was 1 C above average, and cooling to 3 C below average on the 5th. The 6th was 1 C above average and the 7th was 2 C above average. A cool spell then followed with the 8th being 6 C below average, the 9th 5 C below average and the 10th 3 C below average. The 11th was 1 C below average, while the 12th was on average before cooling again to 6 C below average on the 13th, 7 C below average on the 14th, 5 C below average on the 15th and 3 C below average on the 16th. This continued with the 17th being 4 C below average, the 18th and 19th 3 C below average and the 20th was 1 C below average. This cooled further on the 21st to 7 C below average, the 22nd was 6 C below average and the 23rd was 4 C below average. The 24th and 25th was on average, while the 26th was 2 C above average and the 27th was on average. On the 28th it was 1 C below average, 4 C below average on the 29th, 6 C below average on the 30th and 1 C below average on the 31st.

 

Maximum temperatures were almost entirely average to above average with almost no days below average and many days well above average. The 1st to 3rd was 1 C above average warming to 4 C above average on the 4th before easing slightly to 3 C above average on the 5th. The 6th was 4 C above average cooling to 2 C below average on the 7th and warming to on average on the 8th to 10th. The 11th and 12th was 2 C above average, on average on the 13th and 1 C above average on the 14th. On the 15th it warmed to 4 C above average and further to 6 C above average on the 16th and 17th. The 18th was 5 C above average, while the 19th was 1 C above average and cooling to 1 C below average on the 20th. On the 21st it was 1 C above average, 2 C above average on the 22nd and 1 C above average on the 23rd and 24th. The 25th was on average, cooling to 3 C below average on the 26th before warming again to 2 C above average on the 27th. The 28th was on average, the 29th 2 C above average, the 30th 1 C above average and the 31st 3 C above average.

 

Heatwave conditions: Nil (Out of heatwave season). Climatological heatwave: 16th to 18th (29.1 C , 29.4 C , 27.9 C )

 

Air pressure – below average air pressure

Monthly Mean Minimum Pressure: 1014.5 hPa (0.4 hPa lower than same month last year). This is the equal second lowest on record and the equal lowest since 1014.5 hPa in 2013.

 

Monthly Mean Maximum Pressure: 1020.7 hPa (0.2 hPa lower than same month last year). This is the fourth lowest on record and the highest since 1030.9 hPa in 2016.

 

Monthly Mean Pressure: 1017.6 hPa (0.9 hPa below average, 0.3 hPa lower than same month last year). This is the fourth lowest on record and lowest since 1017.4 hPa in 2013.

 

Lowest Pressure: 1007.8 hPa on 6 August 2018 at 4:47 PM. The same month last year saw 1007.6 hPa. This is the third highest monthly minimum August pressure on record, the highest since 1009.1 hPa on 17 August 2012 at 5:47 PM and the ninth lowest daily August air pressure on record.

 

Highest Pressure: 1026.2 hPa on 14 August 2018 at 9:55 AM. The same month last year saw 1025 hPa. This is the fourth lowest monthly August maximum pressure and the lowest since 1030.9 hPa on 16 August 2016. This is the twenty-fifth highest daily air pressure for August.

Note: Air pressure measurements previously have been previously incorrect and are being closely monitored to maintain its accuracy as much as possible. Over the month of August, a difference of 0.05 hPa lower than the official BoM Brisbane site – No. 040913 was observed which is deemed acceptable.

 

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

Monthly Mean Minimum Humidity: 33.8 % (4.4 % lower than same month last year and 10.4 % below average). This is the lowest on record with the old record being 35.6% in 2009.

 

Monthly Mean Maximum Humidity: 84 % (0.6 % higher than same month last year and 3.9 % below average. This is second lowest on record with the record low being 83.4% in 2017.

 

Monthly Mean Humidity: 58.9 % (1.9% lower than same month last year and 8.1% below average). This is the lowest on record exceeding the old record low of 60.8% in 2017.

 

Lowest Humidity: 17% on 13 and 21 August 2018 at 3:55 PM on the 21st (4% lower than this month last year). This is the second lowest monthly and daily August minimum humidity on record and the lowest since 11% on 2 August 2014 at 3:14 PM.

 

Highest Humidity: 98% on 26 August 2018 at 12:06 PM, (1% higher than this month last year). This is the third highest monthly August high humidity and the highest since 99% on 25 August 2016 at 12:37 AM. This previously occurred 14 times.

 

Dew point – below average mean, well below average mean minimum and close to average mean maximum dew point

Monthly mean minimum dew point: 2.9 ºC (4.2 ºC below average)

 

Monthly mean maximum dew point: 10.6ºC (0.3 ºC below average)

 

Monthly mean dew point: 6.8 ºC (2.2 ºC below average)

 

Lowest dew point: -4.8 ºC on 21 August 2018 at 3:41 AM. This is the lowest on record for August exceeding the previous record of -3.4 C on 2 August 2014 at 1:56 PM.

 

Highest dew point: 16.5 ºC on 5 August 2018 at 8:30 AM

 

Wind Speed –record high monthly wind gust and below average wind speed

Maximum Wind Gust: 79.1 km/hr on 19 August 2018 at 11:19 AM. This is the highest August maximum wind gust on record and the old record being 70 km/hr on 25 August 2016 at 10:36 AM. The maximum wind gust this month last year was 68.7 km/hr.

 

Maximum Wind Speed: 43.7 km/hr on 19 August 2018 at 11:20 AM (Strong force Wind). This is a new record high for August exceeding the old record of 41.4 km/hr on 19 August 2017 at 9:25 AM.

 

Wind Run: 1359.6 km (139.6 km less than same month last year) and is the fourth lowest for August on record and the lowest since 1312.1 km in 2013.

 

Monthly Mean Wind Speed: 1.8 km/hr (0.2 km lower than this month last year). This is the equal third lowest on record shared with 2015 and the lowest since 1.3 km/hr in 2013.

 

Daily Mean Maximum Wind Speed: 17.5 km/hr

 

Dominant Direction: SW (WSW this month last year). Use with caution. This is due to equipment failure since December 24 2017 with three hourly readings used from December 25 2017 (instead of at least 5 minute intervals).

 

Rainfall – Below average rainfall

Monthly Rainfall Total: 17.1 mm (13.3 mm below average) and 51.6% of the long term average. This total is in decile 6/ 52nd percentile which ranks as average and 0.3 mm above the long term median (101.8 % of long term median). This is higher than last year which was 11.1 mm, the highest since 11.1 mm in 2016 and is the fifteenth lowest on record.

 

All official sites in the Brisbane area measured below average rainfall totals for August. These ranged between 27% and 73% of the long term average which ranked as average. However Logan City Treatment Plant also ranked as average at 39% of the long term average and a total of 17.4mm. The highest total for August was 42.6 mm at Point Lookout which was 73% of the long term average. The driest location was Gatton which measured a total of 5.4 mm ( 20% of the long term average) while Amberley observed 25% of the long term average with a total of 7.2mm. Both Gatton and Amberley’s total ranked as low. Brisbane saw 25.8 mm which was 68% of the long term average.

 

In the greater Brisbane area there was fine and sunny weather for most of the month with very little rainfall observed until the 24th. On the 24th and 25th an upper-level and surface trough produced widespread moderate falls to southeastern Queensland before easing on the 26th.

 

Number of Rain Days: 3 days, 2 lower than this month last year and 2.2 days below average. This is the equal fourth lowest on record and the lowest since 0 days in 2013.

 

Highest Daily Total: 7.1 mm on 27 August 2018. This is the highest since 9.9 mm on the 25 August 2016 and the ninth lowest August daily rainfall on record. The wettest location in the Brisbane area of the official sites was 8.0 mm at Coomera Foxwell Road on the 25 August 2018.

 

Monthly Rainfall Total – (automatic gauge) 24 hours to 9am: 11.9 mm (5.2 mm less than official standard gauge and within 15.2%). Highest daily total (automatic gauge, 24 hours to 9am): 7.3 mm on the 27 August 2018, (24 hours from midnight): 3.2 mm on 4 August 2018.

 

Note: This automatic gauge is developing rust on its magnet which is possibly affecting its accuracy. Based on the performance of a similar gauge with a failed switch it is expected the accuracy of this gauge will be affected and become erratic as this fault develops further. This gauge is being inspected ever few weeks as well as the comparison to the official standard gauge. For the month of August it meet the expected accuracy (of +/- 20% of the standard gauge) in the mid end of this range (-15.2%). Therefore its recorded total is considered to be valid.

 

On the 6th there were late afternoon light showers, followed by early evening light to moderate and briefly heavy showers. 3.5 mm was measured on the 7th. On the 24th there was an evening nearby thunderstorm with a few drop and rain and then a very brief light evening shower with a trace measured the next day. On the 26th there were light to moderate showers in the early hours becoming light to moderate rain at times from 4 am, less frequent between 6 am and 7pm and then light falls from 10:30 AM. In the early afternoon this eased to light rain before clearing. On the 26th 6.5 mm was measured followed by 7.1 mm on the 27th.

 

There was 0 day with falls of at least 25 mm (equal to same month last year) with 0 days of less than 1mm (2 less than same month last year). Highest Rainfall rate was 19.2 mm/hr on the 26 August 2018 at 10:13 AM with the highest hourly total of 4.7 mm on the 26 August 2018 at 10:44 AM.

 

Number of severe thunderstorms: 0

 

Number of thunderstorms: 0 (Moderate: 0)

 

Number of thunder days: 0 day

 

Number of nearby only storms: 1

 

Severe thunderstorms in the Brisbane area: Nil

 

Remarks for month:

• Sunny on the 1st to 5th; high cloud and dry air on the 1st
• High dew point on the 5th and during the 6th
• Cloudy conditions developed on the 6th with showers followed by a late evening south-westerly change with dry air
• Sunny on 7th to 9th with dry air recovering later on the 9th
• Extensive high cloud on the 7th
• Cool morning on the 10th
• Sunny on 11th to 22nd
• Moderate to fresh south-westerly change in the afternoon of 12th with very dry air
• Dry air increased on the 13th easing on the 14th but persisting and also remaining early in the day on the 15th
• A cold morning and a warm day on the 15th
• Dry with low humidity remained from the 16th to 23rd recovering to normal on the 23rd. Humidity especially low on 16th and 19th
• A cool morning and hot day on 16th to 18th and cool morning on the 19th
• Cloudy and cool day on the 26th with showers followed by dry change with low humidity in the evening
• Sunny early on the 27th; A cool morning on the 29th with dry air returning
• Cold morning and dry air recovering to normal on the 30th
• Sunny and warm day on the 31st
• 15 days of light dew: 2nd to 5th and 7th to 17th; 1 days of moderate dew: 6th and 0 days of heavy dew

 

Weather influences

• A trough shifted east over the state without rain on the 1st. A dry and stable air mass was then brought by a high pressure system moving east over eastern Australia and the Tasman Sea
• The stable air mass remained over the state on the 2nd and 3rd which extended a ridge decaying on the 3rd
• A trough shifted east on the 4th with a warm air mass ahead of the trough as the weak ridge persisted by the coast
• On the 5th, the high pressure system extended light winds and a weak ridge
• A decaying trough moved eastwards across the state on the 6th reaching the region late in the day with warm air ahead of the trough and some showers
• On the 7th a cold front shifted off the coast early in the day allowing a high pressure system over central Australia to extend a cool and dry air mass following the trough
• On the 8th the high pressure system shifted eastwards and into NSW on the 9th extending a weak ridge and cool and dry air before winds tended onshore later on the 9th
• On the 10th and 11th the high pressure system shifted east into the Tasman Sea decaying the ridge and extending light winds
• A trough shifted east and off the coast extending a cool and dry W/SW wind change allowing a high pressure system to extend a ridge eastwards
• The cool and dry air mass remained from the 13th as the high pressure system shifted east reaching the Tasman Sea on the 15th with light winds
• A dry and stable air mass on the 16th and 17th as a trough shifted eastwards and off the coast early on the 17th. A weak high pressure system moved east over the state’s interior with light winds and a dry and stable air mass also on the 18th ahead of a trough
• The trough cleared on the 19th and in combination with a deep low in the Tasman Sea brought a cool and dry air mass after the trough with gusty W/SW winds
• From the 20th a high pressure system extended a firm ridge and cool and dry air mass into the state
• The ridge eased with light winds as the high pressure system moved east on the 21st and 22nd and cleared into the Tasman Sea on the 23rd
• On the 23rd a trough shifted northwards along the coast before decaying without rainfall
• A weak ridge persisted on the 24th while a upper low entered western Queensland in combination with a trough over the interior to bring some showers and thunderstorms
• On the 25th the upper low shifted eastwards with the inland surface trough that deepened while some onshore flow persisted from the Tasman Sea high pressure system with isolated showers and thunderstorms
• On the 26th the upper trough shifted eastwards and then slipped southeast wards into NSW while weakening. The surface trough shifted eastwards also with further rainfall before the trough cleared the coast
• On the 27th a ridge extended eastwards with a stable air mass with light winds from the 28th
• A upper trough and a surface trough from a deep low in the Tasman Sea brought some showers in the region on the 28th
• The trough cleared on the 29th allowing a ridge to extend light winds and fine weather
• On the 30th the ridge decayed as a high pressure system moved east with light winds before the system moved into the Tasman Sea on the 31st.
• A trough shifted east over the state on the 31st with warm and gusty northerly airflow

 

Daily weather notes

• 1/8/18: Fine and sunny. Ci and sc clouds all day and thick at times. Dry air with low dew point increasing later in the day and moderately low relative humidity. Light and variable winds.
• 2/8/18: Fine and sunny. Some cu developing during the day and clearing later in the day. Light and variable winds.
• 3/8/18: Fine and sunny with some cu clouds developing during the day. Light and variable winds.
• 4/8/18: Fine and sunny. A warm day. Light and variable winds.
• 5/8/18: Fine and sunny with no cloud development. Light and variable winds. Increasing dew point during the day, becoming above average later in the day.
• 6/8/18: Fine and becoming partly cloudy during the day with cu clouds. Cloudy in the afternoon with light showers in the late afternoon and light to moderate showers, briefly heavy in the early evening. A dry southwesterly change in the late evening. Light to moderate NW to NW winds becoming SW later in the evening. High dew point during the day before falling later in the evening with the dry change. Relative humidity also fell in the late evening.
• 7/8/18: Fine and sunny. Extensive formations of cc and ac from the morning. Light WNW to SSE winds and moderate in the afternoon. Dry air with falling dew point over the entire day and low daytime relative humidity.
• 8/8/18: Fine and sunny without clouds. A cold morning. Light S to SW winds. Low relative humidity during the day-time. Dew point remained low with dry air. This eased later in the morning but was still below average.
• 9/8/18: Fine, sunny and cloud free day. A cold morning. Light to moderate S to SW winds becoming variable late in the day. Low dew point recovering during the afternoon and evening and relative humidity was low during the day.
• 10/8/18: A cool morning, followed by a fine day. Becoming partly cloudy during the day with some cu easing later in the day. Dry air (with low dew point) recovered to normal early in the day. Light and variable winds.
• 11/8/18: Fine and sunny, with some cu cloud developing during the day. Light to moderate variable winds.
• 12/8/18: Fine and sunny, with some limited cu cloud development during the day. Light to moderate SSW to WSW winds becoming moderate to fresh in the afternoon before easing in the evening. A dry change moved through from the early afternoon with very low dew point and low relative humidity in the afternoon and evening.
• 13/8/18: Fine and sunny with some cu clouds developing during the day before decaying in the afternoon. Light W to SW winds. Dry air with low relative humidity and dew point over the entire day. The relative humidity was particularly low during the day while the dew point was very low in the early hours, before slowly recovering. However in the afternoon the dew point fell before sharply rising (but remaining low) just before 4 pm.
• 14/8/18: Fine and a sunny cloud-free day. A cold morning. Dry air with low dew point early in the day before recovering back to normal during the day. Relative humidity was also low returning close to normal later in the day. Light W to SW winds.
• 15/8/18: Fine and sunny without clouds. A cold morning and a warm day. Some dry air remaining with low dew point early in the day before recovering during the morning, though the dew point fell at times during the afternoon. Low relative humidity during the day. Light and variable winds.
• 16/8/18: Fine and sunny with no clouds. A cool morning and a hot day. Light and variable winds. Dry air persisted with the dew point falling from the late morning becoming very low later in the afternoon and remaining low in the evening. Relative humidity was also low from the late morning.
• 17/8/18: Fine and sunny. A cool morning and a hot day. Mostly light SW to WSW winds becoming moderate in the afternoon. Dry air remaining with low dew point improving slightly during the day. In the evening the dew point rose quickly close to average. Relative humidity was low over the entire day.
• 18/8/18: Sunny and fine. A cool morning and a hot day. Light to moderate S to SSW winds becoming NNW to NNE from the afternoon. Dry air remaining with low dew point and relative humidity over the entire day. The relative humidity was particularly low during the day whilst the dew point rose to slightly below average in the late morning and early evening.
• 19/8/18: A cool morning and a sunny, cloud-free day. Very dry air with dew point very low and falling during the day before easing slightly in the evening. Similarly the relative humidity was low and especially during the daylight hours. Light to moderate SW winds becoming moderate to fresh and strong at times from later in the morning and easing to moderate to fresh in the afternoon and light to moderate in the evening.
• 20/8/18: Fine and sunny. Light to moderate W to SW winds becoming light from the late afternoon. Dry air with very low dew point especially in the afternoon. Relative humidity was similarly low overnight, during the day particularly and in the evening.
• 21/8/18: A cold morning and a fine and dry air remaining with very low dew point and low relative humidity especially later in the day. Light and variable winds.
• 22/8/18: A cold morning and a fine and sunny day. Light WSW to NNW winds early becoming light to moderate W to NNW from the late morning before easing to light WNW to ENE winds from later in the afternoon. Dry air remaining with low dew point and low relative humidity.
• 23/8/18: Fine and clear early. A cool morning. Becoming partly cloudy from the late morning with cu clouds. Light S to SW winds early becoming mostly NNW to N from the later in the morning. Dry air clearing during the morning with dew point returning to normal. Relative humidity returned close to average also.
• 24/8/18: Partly cloudy with cu from the early morning, increasing especially during the afternoon with distant thunderstorms and showers. Evening mild nearby thunderstorm, with a few drops of rain. This was followed by a brief light shower. Light NW to ENE winds.
• 25/8/18: Fine. Partly cloudy from the morning with sc and cu. The temperature was variable during the middle of the day due to cloudy and sunny periods. Light SSW to WNW winds early becoming NNE to SE from the morning and NNW winds in the evening.
• 26/8/18: Light to moderate showers in the early hours becoming light to moderate rain at times from 4 am and less frequent between 6 am and 7 am. Light falls from 10:30 am and easing to occasional light rain in the early afternoon before clearing. A cloudy and cool day. High relative humidity during the daylight hours. Light SW to WNW winds. Drier air followed in the evening with the dew point falling to slightly below average by the late evening.
• 27/8/18: Sunny becoming partly cloudy from the late morning with cu clouds easing later in the day. Light SW to NW winds.
• 28/8/18: Fine. Partly cloudy from later in the morning with cu cloud easing late in the day. Light S to SW winds.
• 29/8/18: Fine and becoming partly cloudy from the morning with cu clouds easing later in the day. A cool morning. Light WNW to SW winds. Dry air developed from the late morning with the dew point falling to well below average in the afternoon and remaining low in the evening. Relative humidity was also low from the late morning.
• 30/8/18: A cold morning and a fine and sunny day. Some cu and sc clouds from the middle of the day. Light NW to ENE winds. Dry air with low relative humidity and dew point early in the day before returning to normal during the morning.
• 31/8/18: Fine and sunny. A warm day. Light to moderate SSW to NNW winds becoming N to E from the afternoon with lights winds from late afternoon.

 

Station records for August 2018

NOTE: Most of these records are from the official station record of this site. Some may be derived from the automatic record. See end notes for more information.

 

Record low August mean minimum temperature in at least 5 years
Observed [C]			Most recent lower			Years of record		Monthly average
6.1			6 in 2012			9		9
Record low mean August temperature in at least 5 years
Observed [C]			Most recent lower			Years of record		Monthly average
15.3			14.4 in 2012			9		16.1
Record low August minimum temperature in at 5 years
Observed [C]			Most recent lower			Years of record		Monthly average
2 at 6:29 AM on 14th			0.7 on 3rd in 2012 at 6:30 AM			9		9
Record low August highest minimum temperature
Observed [C]			Old record			Years of record		Monthly average
10.6 at 12:30 AM on 26th			12.9 on 17th in 2017 at 7:10 AM			9		1018
Record low August mean minimum air pressure in at least 5 years
Observed [hPa]			Most recent lower			Years of record		Monthly average
1014.5			=1014.5			9		1015.9
Record low August mean maximum air pressure in at least 5 years
Observed [hPa]			Most recent lower			Years of record		Monthly average
1017.6			1017.4 in 2013			9		1018.5
Record low August mean air pressure in at least 5 years
Observed [hPa]			Most recent lower			Years of record		Monthly average
1017.6			1017.4 in 2013			8		1018.5
Record high August minimum air pressure in at least 5 years
Observed [hPa]			Most recent higher			Years of record		Monthly average
1007.8 on 6th at 4:47 PM			1009.1 on 17th in 2012 at 5:47 PM			9		1015.9
Record low August mean minimum relative humidity
Observed [%]			Old record			Years of record		Monthly average
33.8			35.6 in 2009			9		44.2
Record low August mean relative humidity
Observed [%]			Old record			Years of record		Monthly average
58.9			60.8 in 2017			9		67
Record high August wind gust
Observed [km/hr]			Old record			Years of record		Monthly average
79.1 on 19th at 11:19 AM			70 on 25th in 2016 at 10:36 AM			8		Not available
Record low August wind run in at least 5 years
Observed [km]			Most recent lower			Years of record		Monthly average
1359.6			1312.1 in 2013			6		Not available
Record low August daily mean wind speed in at least 5 years
Observed [km/hr]			Most recent lower			Years of record		Monthly average
1.8			1.3 in 2013			6		Not available
Record low August number of rain days in at least 5 years
Observed [days]			Most recent lower			Years of record		Monthly average
3			0 in 2013			31		5.2

 

Other records for August 2018

 

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

 

All time records

Lowest Dew Point -4.8 °C at 7:41 PM on 19 August 2018

 

Monthly records

Lowest Dew Point -4.8 °C at 7:31 PM on 19 August 2018

Lowest Apparent Temperature 4.2 °C at 6:15 AM on 14 August 2018

Lowest Humidity 17 % at 3:42 PM on 13 August 2018

Highest Daily Range 20.0 °C on 15 August 2018

Highest Wind Gust 79.1 km/h at 11:19 AM on 19 August 2018

Highest Wind Speed Average 43.7 km/h at 11:20 AM on 19 August 2018

 

Data summary tables for the August 2018