Greater Brisbane in September 2020: below average rainfall, some warm days

Rainfall was generally below average across Greater Brisbane, however, September is typically one of the driest months of the year, receiving between 30 mm and 40 mm of rainfall on average. Mean maximum temperatures were close to average in Brisbane, but warmer than usual in western and inland locations. Mean minimum temperatures were warmer than usual at all locations.

Rainfall generally below average across Greater Brisbane

  • Rainfall was below average at most locations in Greater Brisbane, with only a few days reporting falls during the month.
  • Showers developed along and near a surface trough located over south-east Queensland on the 7th, with falls generally less than 10 mm, but higher falls were reported at some sites in the northern suburbs and along the bay.
  • Most locations reported showers with light falls on the 11th and 19th, from an onshore flow.
  • Light showers were reported at some locations in late September.

Minimum temperatures warmer than average

  • Mean maximum temperatures were generally close to average in Brisbane, but warmer than usual in western and inland locations.
  • Warm days were observed in late September, with temperatures exceeding 30 °C between the 21st and 25th; the highest temperature of the month was 34.0 °C at Gatton on the 21st and at Amberley AMO on the 23rd.
  • Mean minimum temperatures were more than a degree above average at most locations in Greater Brisbane.
  • Warm nights were on the 21st and 22nd due to thick cloud, and Point Lookout had its warmest September night (highest daily minimum temperature) on record.

Further information

Media
(03) 9669 4057

Extremes in September 2020
Hottest day 34.0 °C at University of Queensland Gatton on the 21st
34.0 °C at Amberley AMO on the 23rd
Warmest days on average 27.8 °C at University of Queensland Gatton
Coolest days on average 23.0 °C at Cape Moreton Lighthouse
Coldest day 19.5 °C at Canungra (Defence) on the 10th
Coldest night -0.2 °C at Canungra (Defence) on the 27th
Coolest nights on average 9.6 °C at Canungra (Defence)
Warmest nights on average 17.8 °C at Cape Moreton Lighthouse
Warmest night 21.8 °C at Redcliffe on the 23rd
Warmest on average overall 20.4 °C at Brisbane
20.4 °C at Cape Moreton Lighthouse
Coolest on average overall 17.2 °C at Canungra (Defence)
Wettest overall 93.5 mm at Caloundra Airport
Wettest day 55.6 mm at Caloundra Airport on the 7th
Strongest wind gust 91 km/h at Cape Moreton Lighthouse on the 11th

Record highest September daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
September
Point Lookout 21.0 on the 22nd 20.8 on the 28th in 2017 24 16.6



Summary statistics for September 2020
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
September
2020
Diff
from
average
Highest for
September
2020
Mean for
September
2020
Diff
from
average
Lowest for
September
2020
Total for
September
2020
Average
for
September
Rank of
September
2020
Fraction of
September
average
Amberley AMO 27.5 +1.8 34.0 23rd 10.3 +0.8 1.5 27th 5.2 32.7 low 16%
Archerfield Airport 26.5 +1.2 32.5 23rd 12.5 +1.4 6.4 27th 9.2 34.6 low 27%
Beaudesert Drumley Street 26.8 +0.5 32.0 23rd 10.9 +1.0 2.5 27th 0 31.9 v low 0%
Beerburrum Forest Station 25.7 -0.4 30.8 22nd 12.6 +0.6 5.9 27th 17.8 46.4 average 38%
Brisbane 25.9 +0.2 31.4 23rd 14.9 +1.1 10.3 27th 5.8 27.3 low 21%
Brisbane Aero 24.3 +0.1 28.9 23rd 14.0 +1.1 7.0 27th 11.0 31.7 low 35%
Canungra (Defence) 24.8   30.2 23rd 9.6   -0.2 27th 6.2
Cape Moreton Lighthouse 23.0 +1.4 25.4 24th 17.8 +1.8 13.9 27th 16.0 63.7 low 25%
Greenbank (Defence) 26.4   31.8 23rd 10.3   0.6 27th 11.4
Logan City Water Treatment Plant 24.9 -0.3 31.9 23rd 13.7 +1.2 7.2 27th 17.9 39.0 low 46%
Redcliffe 24.4 +0.3 28.5 22nd 15.4 +0.9 9.6 27th 27.2 37.0 average 74%
Redland (Alexandra Hills) 23.8   28.6 23rd 14.2   8.8 27th 20.6
University of Queensland Gatton 27.8 +2.2 34.0 21st 10.5 +1.0 4.1 27th

Daily maximum temperatures for September 2020
123456789101112131415161718192021222324252627282930
Amberley AMO28.326.226.227.028.725.026.225.825.921.525.024.626.529.327.626.828.827.726.429.632.133.434.030.733.024.727.325.825.125.4
Archerfield Airport25.925.826.026.327.024.725.325.325.421.624.224.424.928.526.627.027.427.326.428.430.230.232.530.129.025.026.024.624.925.1
Beaudesert Drumley Street26.626.026.026.828.424.425.925.825.621.023.724.224.929.127.227.028.827.425.728.831.631.332.029.630.524.726.424.724.324.9
Beerburrum Forest Station24.725.025.826.126.925.121.723.924.022.921.323.123.626.824.925.926.625.925.427.730.530.829.929.929.325.825.423.423.524.3
Brisbane26.424.125.925.726.025.624.824.424.920.923.124.323.828.125.826.227.126.325.627.829.731.131.428.927.724.925.623.923.924.1
Brisbane Aero23.624.325.025.024.424.023.522.722.321.122.522.523.124.823.724.125.124.924.326.326.926.728.927.025.824.823.222.022.923.9
Canungra (Defence)24.823.025.725.726.621.323.423.123.519.521.922.022.927.125.124.826.725.323.626.129.828.330.228.128.523.624.422.921.523.1
Cape Moreton Lighthouse22.022.723.324.323.222.220.921.421.921.320.421.122.323.522.823.023.623.925.125.025.023.724.625.424.723.621.320.723.623.4
Greenbank (Defence)26.725.926.427.127.724.325.024.725.120.623.623.524.528.926.125.928.526.625.028.430.931.431.830.129.324.926.324.223.723.9
Logan City Water Treatment Plant24.724.425.725.225.823.723.823.323.120.022.322.423.227.225.025.225.825.324.225.228.731.929.626.925.725.721.723.423.3
Point Lookout23.925.825.425.023.822.624.024.521.323.125.923.726.026.227.826.925.324.927.625.024.0
Redcliffe23.123.924.525.124.422.722.121.822.922.324.423.923.524.024.123.925.628.128.527.627.127.425.022.722.123.523.8
Redland (Alexandra Hills)24.322.523.823.723.923.122.523.022.720.121.522.422.024.123.824.223.925.223.925.326.426.428.626.425.623.922.322.022.823.2
University of Queensland Gatton28.627.326.527.928.625.626.826.926.521.525.125.326.929.527.727.229.228.527.229.834.033.732.530.033.324.526.326.025.825.4
Values are the maximum temperature, usually in the 24 hours from 9 am on the day indicated,
and typically occurred in the afternoon of that day.
Temperatures coloured according to their difference
from the long-term average for the period
-10.0 -9.0 -8.0 -7.0 -6.0 -5.0 -4.0 -3.0 -2.0 -1.0 0.0 +1.0 +2.0 +3.0 +4.0 +5.0 +6.0 +7.0 +8.0 +9.0 +10.0 °C Grey outline marks highest
and lowest for the period

Daily minimum temperatures for September 2020
123456789101112131415161718192021222324252627282930
Amberley AMO5.610.39.013.28.513.512.68.58.19.813.07.26.310.49.89.88.612.014.715.013.716.618.113.06.313.01.55.09.05.7
Archerfield Airport8.812.111.815.212.114.814.810.310.811.814.69.610.611.311.29.910.613.514.916.716.119.619.615.810.114.86.48.810.18.9
Beaudesert Drumley Street8.210.611.213.49.915.512.38.47.810.114.08.210.09.39.58.69.511.815.415.116.119.816.413.07.813.72.55.87.76.3
Beerburrum Forest Station9.612.812.713.711.513.515.712.912.610.314.011.212.511.612.112.410.212.111.913.714.019.119.718.112.413.15.99.412.68.1
Brisbane12.814.513.915.714.216.416.514.114.113.414.912.613.314.015.014.514.316.116.416.917.019.920.818.714.315.610.312.013.411.0
Brisbane Aero11.413.514.315.013.515.316.312.714.113.114.711.412.613.113.713.513.214.715.417.416.219.720.716.912.715.17.010.112.710.8
Canungra (Defence)5.510.59.512.68.513.414.37.59.98.912.56.68.67.97.66.97.48.514.413.615.218.215.610.67.114.0-0.23.65.03.9
Cape Moreton Lighthouse15.818.418.419.318.817.916.717.018.016.915.215.917.016.618.018.217.718.719.119.119.720.520.019.518.615.913.917.217.617.1
Greenbank (Defence)6.69.78.512.19.214.112.09.17.59.413.89.17.88.39.28.78.011.114.915.214.819.317.812.86.714.00.65.18.05.3
Logan City Water Treatment Plant11.213.613.315.413.716.416.813.013.913.39.611.713.312.413.112.612.714.416.416.117.419.916.612.314.97.212.010.2
Point Lookout15.518.817.818.517.117.217.116.215.615.815.017.616.117.518.520.021.018.115.311.615.9
Redcliffe11.914.916.115.814.616.016.414.215.513.514.814.114.014.614.615.014.416.416.917.817.321.021.818.614.415.89.613.615.312.2
Redland (Alexandra Hills)10.612.612.715.013.915.615.814.914.312.714.112.913.812.714.114.811.914.715.316.117.820.920.415.413.914.98.810.213.811.4
University of Queensland Gatton6.111.18.411.69.612.314.98.39.29.714.85.47.711.710.89.59.610.714.813.013.618.617.17.312.44.16.08.66.3
Values are the minimum temperature, usually in the 24 hours to 9 am on the day indicated,
and typically occurred that morning.
Temperatures coloured according to their difference
from the long-term average for the period
-10.0 -9.0 -8.0 -7.0 -6.0 -5.0 -4.0 -3.0 -2.0 -1.0 0.0 +1.0 +2.0 +3.0 +4.0 +5.0 +6.0 +7.0 +8.0 +9.0 +10.0 °C Grey outline marks highest
and lowest for the period

Daily rainfall for September 2020
123456789101112131415161718192021222324252627282930
Alderley - - 0.2 - - - 3.8 - - - 1.6 - - - - - - - 0.6 0.1 - - - - - - - - - -
Amberley AMO - - - - - - 0.8 - - - - - - - - - - - 3.4 0.6 0.2 0.2 - - - - - - - -
Archerfield Airport - - 0.2 - - - 1.4 - - - 0.4 0.2 - - - - - - 6.8 0.2 - - - - - - - - - -
Beaudesert Drumley Street - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Beerburrum Forest Station - 0.2 - - - - 7.8 0.2 0.2 - 3.6 1.0 0.2 - - 0.2 - - 0.6 - - - 1.2 - - 2.6 - - - -
Blackbutt Post Office - - - - 1.4 - - - - - - - - - - - 1.0 - - - - 0.6

Brisbane - - - - - - 0.4 0.2 - - 0.8 0.2 - 0.8 - - - - 0.4 2.2 - - - - - 0.8 - - - -
Brisbane Aero - - - - - - 7.4 - - - 1.4 0.6 - - - 0.2 - - 1.2 0.2 - - - - - - - - - -
Brisbane Botanic Gardens Mt Coot-Tha - - - - - 0.4 4.8 - - - 2.8 5.0 - - - - - - 1.4 - - - - - - 1.4



Caloundra Airport - 0.1 2.0 - - - 55.6 5.0 - - 9.0 7.0 7.0 1.0 - 1.0 - - - - 1.0 - 2.2 - - - - - 1.6 1.0
Canungra (Defence) - - - - - - - - - - 0.2 0.2 - 0.8 - - - - 3.8 0.6 - - - - - 0.6 - - - -
Capalaba Water Treat - 0.4 - - - - 4.2 - - - - - - - - - - - 6.0 - - 0.2







Cape Moreton Lighthouse - - 1.0 - - - 11.6
- - 2.0 0.6 0.2 0.2 - - - - - - - - 0.4 - - - - - - -
Carneys Creek The Ranch - - - - - 0.6 - - - - 1.2 1.2 - - - - - - - 1.0









Clontarf - - 0.4 - - - 7.0 - - - 4.0 - 0.6 - - - - - 2.4 - - - - - - 1.0 - - - -
Esk Post Office - - - - - - - - - - 0.8


















Fort Lytton - - - - 8.3 - - - - - - - 2.0














Godwin Beach - - 0.4 - 0.2 - 17.0 0.4 - - 4.8 1.0 1.4 0.8 0.2 - - - 0.6 - 0.2 - 0.4 - - 1.0 - - 0.4 -
Greenbank (Defence)
- - - - - - - - - - - 0.2 - - 0.2 - - 11.0 - - - - - - - - - - -
Greenbank Thompson Road - - - - - - - - - - 0.2 0.6 - - - 0.6 - - 10.4 0.2









Harrisville Mary Street - - - - - - - - - - 0.6 - - - - 0.2 - - 3.0 0.1 - - - - - - - - - -
Highvale - - - - - - 0.4 - - - 1.8 - - - - - - - 5.0 1.2









Kalbar State School - - - - - - - - - - 1.4 - - - - - - - 2.4 1.3 - - -






Karalee - - - - - - - - - - 0.8 - - - - - - - 14.8 0.2 - - - - - 0.1



Landsborough - - - - - - 22.0 10.4 - - 5.0 8.2 2.8 0.8 - 1.8 - - 1.2 0.4 - - - - - 1.2



Lindfield - - - - - - - - - - 5.6 - - - - 1.8 - - 0.2 - - - 6.2 - - - - - - -
Logan City Water Treatment Plant - - - - - - - - - - 4.0 0.4 0.1 - - 0.4 - - 11.8 0.8 - - - - - 0.4 - - - -
Lowood Don St - - - - - - - - - - 0.7 - - - - - - - 0.2 0.1 - - - - - - - - - -
Manly Railway Station - - - - - - 5.0 - - - 3.4 - - - - - - - - - - - - - - - -


Maroon Dam - - - - - - - - - - 0.4 - - - - - - - - 1.2









Mt Alford - - - - - - - - - - 0.4 - - - - - - - 1.4










Mt Tamborine Fern St - - - - - - 0.4 - - 0.2 2.0 - - - - - - - 18.0 0.4 - - - - - 0.2



Ormiston College - - - - - - 20.6






















Peachester - - - - - - 5.5 1.0 - - - 2.0 3.0 - - 2.0













Point Lookout - - - - - - 28.8 - - - 5.2 1.0 - - - - - 0.4 - - - - 2.6 - - - -
Redcliffe - - 1.0 - - - 19.2 0.2 - - 3.8 - 2.0 - - 0.2 - - 0.8 - - - - - - - - - - -
Redland (Alexandra Hills) - - - - - - 6.8 - - - 7.0 - 0.6 0.2 - - - - 4.0 1.6 - - - - - 0.4 - - - -
Regents Park - - - - - - - - - - 0.6 0.2 - - - - - - 6.4 -









Rocky Point Sugar Mill - - - - 1.2 - - - 16.4 3.6 - 2.8 - - 8.6








Somerset Dam - - - - - - 4.4 0.2 - - 2.6 - - - - - - - - - - - - - - - - - - -
University of Queensland Gatton 1.6 - - - - - - - - - - -
-

- - 0.4 0.2 - - - - - - - - - -
Wivenhoe Dam - - - - - - - - - - 5.6 - - - - - - - 3.4 - - - - - - 0.4



Woodford Stanmore - - - - - - 4.0 2.0 - - 2.4 - - - - - - - 4.4 0.4 - - 2.6 - - 5.8



Most values are the precipitation in the 24 hours to 9 am on the day indicated. Days marked with → are part of a longer accumulation, which is shown on the final day.
Values over 100 mm have been rounded to the nearest whole millimetre.
Days marked with - have a rainfall report of zero; days left blank have no rainfall report (which often indicates no rain fell).
Rainfalls coloured
according to the amount
0 1.0 5.0 10.0 15.0 25.0 50.0 100 150 200 300 400 600 millimetres

Notes

The Monthly 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 10 am on Thursday 1 October 2020. 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

Creative Commons By Attribution logo Unless otherwise noted, all maps, graphs and diagrams in this page are licensed under the Creative Commons Attribution 4.0 International Licence

Climate