Brisbane in September 2014: Average rainfall; cool nights, mild days

Most Brisbane metropolitan sites recorded near-average rainfall for September, with monthly totals ranging between 10 mm to 50 mm. Thunderstorms occurred across the greater southeast on the 16th, 25th and 27th of September. Some moderate daily rainfall totals were recorded to 9am on the 26th, with 32.0 mm at Archerfield. Hail was reported in several locations on the 27th, reaching 2-3 cm at Canungra and golf ball size at Upper Coomera . 

Overall, maxima were near-average for the month. It was a cool start, with daytime temperatures several degrees lower than the September average. A warm spell during the middle of the month resulted in all metropolitan sites recording daily temperatures several degrees above average. 

Overnight temperatures were slightly cooler than average for the month. Cool conditions lingered in the first half of the month but warmer minima were recorded near the end of the month as mid-spring approached. 

  • Thunderstorms produce the bulk of monthly rainfall
  • Cool overnight temperatures at the start of the month
  • Near-average daytime temperatures

Further information

Media
(03) 9669 4057
Enquiries

Extremes in September 2014
Hottest day 31.1 °C at Amberley AMO on the 16th
Warmest days on average 26.4 °C at Amberley AMO
Coolest days on average 23.3 °C at Redcliffe
Coldest day 20.6 °C at Redcliffe on the 5th
Coldest night 1.7 °C at Amberley AMO on the 4th
Coolest nights on average 8.5 °C at Amberley AMO
Warmest nights on average 13.9 °C at Redcliffe
Warmest night 17.2 °C at Redcliffe on the 13th
Warmest on average overall 19.0 °C at Brisbane
Coolest on average overall 17.4 °C at Amberley AMO
Wettest overall 43.7 mm at Hilltop Gardens
Driest overall 10.4 mm at Amberley AMO
Wettest day 32.0 mm at Archerfield Airport on the 26th
Strongest wind gust 69 km/h at Archerfield Airport on the 25th




Summary statistics for September 2014
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
September
2014
Diff
from
average
Highest for
September
2014
Mean for
September
2014
Diff
from
average
Lowest for
September
2014
Total for
September
2014
Average
for
September
Rank of
September
2014
Fraction of
September
average
Amberley AMO 26.4 +0.8 31.1 16th 8.5 -1.0 1.7 4th 10.4 32.9 low 32%
Archerfield Airport 25.7 +0.5 29.7 17th 10.8 -0.3 5.4 5th 41.2 35.6 average 116%
Brisbane 25.2 -0.5 29.5 17th 12.9 -0.9 9.1 5th 27.6 28.8 average 96%
Brisbane Aero 23.8 -0.4 29.2 17th 12.3 -0.5 6.9 4th 26.6 32.2 average 83%
Logan City Water Treatment Plant 24.6 -0.5 30.0 17th     7.6 5th 35.5 43.0 average 83%
Redcliffe 23.3 -0.8 28.3 2nd 13.9 -0.5 9.2 5th 35.8 42.9 average 83%

Daily maximum temperatures for September 2014
123456789101112131415161718192021222324252627282930
Amberley AMO27.129.922.724.023.623.123.222.924.930.128.526.425.425.827.931.129.527.227.125.624.123.524.725.428.027.827.925.728.230.7
Archerfield Airport26.529.423.123.223.823.223.022.224.928.927.426.124.725.227.328.429.726.825.924.624.424.024.825.127.525.826.824.825.927.6
Brisbane25.329.123.123.923.823.423.123.023.628.327.025.224.224.726.326.929.527.324.724.024.423.423.923.426.325.526.623.924.926.2
Brisbane Aero23.027.922.622.421.822.221.622.222.825.424.123.922.823.423.824.329.226.723.921.922.723.223.123.424.725.324.522.823.824.8
Logan City Water Treatment Plant26.027.523.023.222.821.821.321.823.626.825.424.223.624.027.126.530.026.825.222.422.822.023.123.526.524.725.723.525.827.0
Redcliffe22.228.321.820.920.620.821.321.022.525.724.223.022.723.123.325.027.926.023.021.822.222.522.222.524.925.323.421.923.625.4
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 2014
123456789101112131415161718192021222324252627282930
Amberley AMO10.69.010.31.72.25.56.712.46.88.34.77.113.18.07.79.97.95.43.18.58.111.112.39.612.611.510.911.97.99.1
Archerfield Airport11.112.19.96.45.49.59.913.39.310.98.911.313.610.69.510.911.111.68.111.69.311.613.311.112.014.413.212.111.611.7
Brisbane13.412.010.910.09.111.512.913.812.413.311.713.815.112.812.813.311.911.111.214.412.613.415.513.914.813.914.515.013.213.6
Brisbane Aero13.312.511.36.97.59.611.113.111.212.410.612.615.611.711.813.213.312.610.212.812.213.015.213.613.414.614.014.213.012.5
Logan City Water Treatment Plant13.012.911.67.69.911.313.411.612.913.7
Redcliffe13.716.113.09.49.211.313.614.313.613.812.613.017.213.612.214.215.315.110.613.614.114.715.415.415.715.815.416.514.314.0
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 2014
123456789101112131415161718192021222324252627282930
Alderley 0.8 2.4 0.6 1.8 1.2 0.8 20.2 9.2
Amberley AMO - - - - - - - - 3.6 - - - - 0.2 - - - - - - - 0.2 0.2 - - 5.4 - 0.8 - -
Archerfield Airport - - - - - - - 0.4 1.6 - 0.2 - - - - - - - - - - - - - - 32.0 - 7.0 - -
Boondall - - - - - - - 4.2 1.0 - - - - - - - 1.4 - - - - 1.6 4.2 0.6 - 8.4 - 2.8 - -
Brisbane - - - - - - - 3.0 - - - - - - - - - - - - - 0.6 3.0 0.8 - 9.8 - 10.4 - -
Brisbane Aero - - - - - - - 7.0 3.6 - - 0.2 - - - - - 0.2 - - - 1.2 0.8 1.0 - 6.6 - 6.0 - -
Brisbane Botanic Gardens Mt Coot-Tha - - - - - - - 2.0 3.4 - - - - - - - - - - - - 0.6 - 2.0 - 13.8



Hilltop Gardens



5.0

5.0 3.0










0.3 1.0 2.6 0.8
13.0
13.0
-
Logan City Water Treatment Plant - - - - - - - 3.0 2.6 - 0.4 - - 11.9 - - - - - - - 1.6 2.6 1.6 - 7.4 - 4.4 - -
Mt Nebo Post Office - - - - - - - 1.6 2.2 - - - - - - - - - - - - 3.0 3.0 0.4 - 8.4



Redcliffe - - - - - - - 1.4 1.4 - 0.2 - - - - 7.4 2.6 - - - - 1.0 6.4 0.4 2.2 10.2 - 2.4 0.2 -
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

A Monthly Climate Summary is prepared to list the main features of the weather in Brisbane using the most timely and accurate information available on the date of publication; it will generally not be updated. Later information, including data that has had greater opportunity for quality control, will be presented in the Monthly Weather Review, usually published in the fourth week of the month.

A Climate Summary is generally published on the first working day of each month.

This statement has been prepared based on information available at 11 am on Wednesday 1 October 2014. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

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.

The ACORN-SAT dataset is used for temperature area averages.

Further information

Media
(03) 9669 4057
Enquiries