Greater Brisbane in winter 2021: below average rainfall

Rainfall was generally below average across Greater Brisbane, with most sites reporting at least 60% of their average winter rainfall. Mean maximum temperatures were close to average, and mean minimum temperatures were above average.

Below average rainfall in winter

  • Winter rainfall was generally below average across Greater Brisbane for the season, with most sites reporting at least 60% of their long-term average.
  • Rainfall was below average across the Greater Brisbane area in June, with most sites reporting less than half their June average.
  • Rainfall in July was above average at most sites in Greater Brisbane, and more than one and half times the July average at Brisbane..
  • August rainfall was below average across Greater Brisbane, with most site reported around 20% or more of their August average.

Mean minimum temperatures above average

  • Winter mean maximum temperatures generally within a half a degree of the average, and winter mean minimum temperatures  were above average at all sites.
  • In June, mean maximum temperatures were close to the long-term average and mean minimum temperatures were slightly below average at most sites.
  • July's mean maximum temperatures were cooler than usual, while mean minimum temperatures were warmer than usual.
  • August daytime temperatures were generally close to average, and night-time temperatures were above average in western and offshore island sites.

Brisbane

  • Total rainfall for Brisbane was 86.0 mm, which is 67% of the long-term average of 127.6 mm.
  • The mean daily maximum temperature for Brisbane was 22.4 °C, which is 0.1 °C below the long-term average of 22.5 °C.
  • The warmest day was 28.0 °C on 30 August, and the coolest day was on 21 July when the temperature reached 17.4 °C.
  • The mean daily minimum temperature for Brisbane was 11.5 °C, which is 0.5 °C above the long-term average of 11.0 °C.
  • The coldest morning was 6.0 °C on 20 July, and the warmest morning was on 16 July when the minimum temperature was 16.7 °C.

Further information

Media
(03) 9669 4057

Extremes in winter 2021
Hottest day 28.7 °C at Amberley AMO on 30 Aug
Warmest days on average 22.5 °C at Amberley AMO
Coolest days on average 20.2 °C at Cape Moreton Lighthouse
Coldest day 15.0 °C at Cape Moreton Lighthouse on 21 Jul
Coldest night -1.3 °C at Canungra (Defence) on 22 Jul
Coolest nights on average 5.5 °C at Canungra (Defence)
Warmest nights on average 14.7 °C at Cape Moreton Lighthouse
Warmest night 19.0 °C at Point Lookout on 3 Aug
19.0 °C at Cape Moreton Lighthouse on 23 Aug
Warmest on average overall 17.5 °C at Cape Moreton Lighthouse
Coolest on average overall 13.5 °C at Canungra (Defence)
Wettest overall 164.8 mm at Carneys Creek The Ranch
Wettest day 45.0 mm at Caloundra Airport on 3 Jul
Strongest wind gust 85 km/h at Cape Moreton Lighthouse on 15 Jun


Summary statistics for winter 2021

Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
winter
2021
Diff
from
average
Highest for
winter
2021
Mean for
winter
2021
Diff
from
average
Lowest for
winter
2021
Total for
winter
2021
Average
for
winter
Rank of
winter
2021
Fraction of
winter
average
Amberley AMO 22.5 +0.6 28.7 30 Aug 6.3 +0.1 -0.7 22 Jul 64.4 111.2 low 58%
Archerfield Airport 22.4 +0.5 27.8 30 Aug 9.1 +0.7 3.1 11 Jun 83.8 149.0 low 56%
Beaudesert Drumley Street 22.3 0.0 27.8 31 Aug 6.9 +0.2 -0.6 10 Jun 82.8 97.5 average 85%
Beerburrum Forest Station 22.3 0.0 28.5 30 Aug 10.1 +0.2 4.3 11 Jun 105.6 182.4 low 58%
Brisbane 22.4 -0.1 28.0 30 Aug 11.5 +0.5 6.0 20 Jul 86.0 127.6 low 67%
Brisbane Aero 21.6 +0.2 27.3 16 Jul 10.4 +0.5 4.3 22 Jul 83.8 132.8 low 63%
Canungra (Defence) 21.4   26.6 31 Aug 5.5   -1.3 22 Jul 90.0


Cape Moreton Lighthouse 20.2 +0.7 23.6 23 Aug 14.7 +0.9 9.5 22 Jul 162.0 322.9 low 50%
Greenbank (Defence) 22.3   27.6 30 Aug 6.6   0.2 27 Aug 98.4


Logan City Water Treatment Plant     27.2 21 Aug 9.8 +0.3 4.7 10 Jun 115.3 149.3 average 77%
Redcliffe     25.6 29 Jul 11.8 +0.1 6.2 22 Jul 97.4 144.6 low 67%
Redland (Alexandra Hills) 21.1   26.2 16 Aug 10.8   5.6 20 Jul 104.0


University of Queensland Gatton 21.8 +0.3 27.9 30 Aug 7.3 +0.5 0.7 10 Jun 113.8 103.8 average 110%

Notes

The Seasonal climate summary, generally published on the first working day of each month, lists the main features of the weather in Greater Brisbane using the most timely and accurate information available on the date of publication; it will generally not be updated. More extensive discussion of significant weather events, along with later information and data that has had greater opportunity for quality control, will be presented in the Monthly Weather Review.

This summary includes data from observing sites in or near the Greater Brisbane “Greater Capital City Statistical Area” (GCCSA). The Australian Bureau of Statistics designed the GCCSAs to “include the population within the urban area of the city, as well as people who regularly socialise, shop or work within the city, and live in small towns and rural areas surrounding the city. It is important to note that GCCSAs do not define the built up edge of the city. They provide a stable definition for these cities and are designed for the output of a range of social and economic survey data.

This statement has been prepared based on information available at 11 am on Wednesday 1 September 2021. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

In some situations, some or all of the rainfall is in the form of hail or snow. In these cases the totals given are for the water equivalent: the depth of liquid water that results from melting any frozen precipitation. There can be significant 'undercatch' of snow in strong winds, meaning the true precipitation can be higher than that reported.

Averages for individual sites are long-term means based on observations from all available years of record, which vary widely from site to site. They are not shown for sites with less than 10 years of record, as they cannot then be calculated reliably.
The median is sometimes more representative than the mean of long-term average rain.

The Rank indicates how rainfall this time compares with the climate record for the site, based on the decile ranking (very low rainfall is in decile 1, low in decile 2 or 3, average in decile 4 to 7, high in decile 8 or 9 and very high is in decile 10).
The Fraction of average shows how much rain has fallen this time as a percentage of the long-term mean.

Where temperature area averages are mentioned, they are derived from the ACORN-SAT dataset.

Further information

Media
(03) 9669 4057

Climate