Australian Capital Territory in September 2025

Rainfall

  • Rainfall totals for September were below to above average across Australian Capital Territory.
  • September rainfall totals ranged from around 66% of average to around 144% of average across the Territory.
  • The wettest day was 46.0 mm at Canberra Airport on the 11th.
  • The wettest overall was 72.2 mm at Bruce (Australian Institute of Sport).

Temperature

  • Mean maximum temperatures for September across the Territory were below to above average.
  • September mean maximum temperatures for the Territory ranged from 0.2 °C below average at Mount Ginini AWS to 0.8 °C above average at Tuggeranong (Isabella Plains) AWS.
  • The warmest day was 24.9 °C at Canberra Airport on the 30th and the coldest day was 3.2 °C at Mount Ginini AWS on the 3rd.
  • Mean minimum temperatures for September across the Territory were below to above average.
  • September mean minimum temperatures for the Territory ranged from 0.4 °C below average at Tuggeranong (Isabella Plains) AWS to 0.2 °C above average at Canberra Airport.
  • The warmest night was 12.3 °C at Tuggeranong (Isabella Plains) AWS on the 8th and the coldest night was -3.8 °C at Mount Ginini AWS on the 23rd.

Canberra Airport

  • Total rainfall for Canberra Airport was 71.0 mm, which is 144% of the long-term average at the current site of 49.3 mm.
  • The mean daily maximum temperature for Canberra Airport was 18.4 °C, which is 0.3 °C above the long-term average at the current site of 18.1 °C.
  • The warmest day was 24.9 °C on the 30th, and the coolest day was on the 10th when the temperature reached 10.9 °C.
  • The mean daily minimum temperature for Canberra Airport was 3.4 °C, which is 0.2 °C above the long-term average at the current site of 3.2 °C.
  • The coldest morning was -3.6 °C on the 1st, and the warmest morning was on the 8th when the minimum temperature was 11.6 °C.

Extremes in September 2025
Hottest day 24.9 °C at Canberra Airport on the 30th
Warmest days on average 18.5 °C at Tuggeranong (Isabella Plains) AWS
Coolest days on average 8.4 °C at Mount Ginini AWS
Coldest day 3.2 °C at Mount Ginini AWS on the 3rd
Coldest night -3.8 °C at Mount Ginini AWS on the 23rd
Coolest nights on average 0.2 °C at Mount Ginini AWS
Warmest nights on average 3.4 °C at Canberra Airport
Warmest night 12.3 °C at Tuggeranong (Isabella Plains) AWS on the 8th
Warmest on average overall 10.9 °C at Canberra Airport
Coolest on average overall 4.5 °C at Mount Ginini AWS
Wettest overall 72.2 mm at Bruce (Australian Institute of Sport)
Wettest day 46.0 mm at Canberra Airport on the 11th
Strongest wind gust 69.0 km/h at Canberra Airport on the 26th


Summary statistics for September 2025
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
September
2025
Diff
from
average
Highest for
September
2025
Mean for
September
2025
Diff
from
average
Lowest for
September
2025
Total for
September
2025
Average
for
September
Rank of
September
2025
Fraction of
September
average
Canberra Airport 18.4 +0.3 24.9 30th 3.4 +0.2 -3.6 1st 71.0 49.3 high 144%
Mount Ginini AWS 8.4 -0.2 14.4 30th 0.2 -0.1 -3.8 23rd 60.4 86.0 average 70%
Tuggeranong (Isabella Plains) AWS 18.5 +0.8 24.0 27th 3.3 -0.4 -3.2 1st 37.6 57.0 average 66%

Daily maximum temperatures for September 2025
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Canberra Airport 15.9 16.2 16.3 17.5 16.0 19.4 21.0 22.3 21.6 10.9 15.8 16.2 17.9 17.9 20.9 21.2 16.7 16.7 19.0 14.3 16.0 16.2 15.7 19.5 18.1 22.7 24.1 22.2 20.3 24.9
Mount Ginini AWS 4.5 6.4 8.9 10.7 10.5 10.9 4.0 7.7 9.4 10.1 12.0 7.3 6.5 9.8 11.4 4.1 3.9 5.5 9.5 9.9 9.6 12.0 14.4 13.8
Tuggeranong (Isabella Plains) AWS 15.8 15.7 15.6 17.7 16.3 19.1 20.8 21.9 10.1 15.7 16.9 17.8 19.2 21.4 20.1 16.8 16.3 18.8 14.6 16.5 16.9 15.5 20.7 19.0 22.3 24.0 22.8 20.3 23.5
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 2025
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Canberra Airport -3.6 1.6 1.4 7.8 -2.2 -0.8 1.8 11.6 9.9 3.8 4.8 -1.7 -0.9 0.2 3.9 4.3 7.7 -0.7 -0.1 9.1 4.7 7.6 -3.1 0.3 6.6 6.5 9.4 4.2 6.0 2.3
Mount Ginini AWS -0.8 -3.7 -1.4 1.9 4.8 2.5 -2.1 -1.6 -0.3 0.4 1.4 4.7 -1.5 -3.1 0.1 -1.4 -2.3 -1.0 -3.8 0.2 0.6 1.6 5.4 3.7
Tuggeranong (Isabella Plains) AWS -3.2 3.1 0.4 6.9 -1.5 2.1 2.1 12.3 4.6 4.7 -1.9 -0.9 -0.6 1.7 6.1 8.7 -1.2 -1.0 9.4 5.5 5.6 -2.2 0.6 5.9 4.8 7.5 5.4 7.2 2.4
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 2025
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Aranda (Bindaga St) - - - - - - - 1.8 - 1.0 40.4 - - - - - 5.2 - - 15.0 - - 5.8
Bruce (Australian Institute of Sport) 8.0 - - - - 1.8 - 3.0 41.0 - - - - - - - 6.0 14.0 6.4
Canberra Airport 0.2 - - - - - - 0.6 - - 46.0 2.6 - - - - 8.8 - - 12.8 - - - - - - - - - -
Mount Ginini AWS - - - - - 0.2 - 8.2 - - 17.0 10.6 - - - - 13.8 - - 9.4 0.2 0.8 - 0.2 - - - - -
Torrens (Darke St) - - - - - - - - - 1.2 35.6
Tuggeranong (Isabella Plains) AWS - - - - - - - 0.4 - - 23.0 - - - - - 2.0 - - 12.2 - - - - - - - - - -
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

The Monthly climate summary, usually published in the first week of the following month, lists the main features of the weather in Australian Capital Territory using the most timely and accurate information available on the date of publication; it will generally not be updated.

This statement has been prepared based on information available on Wednesday 1 October 2025. 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, excluding the current year. The length of record can vary widely from site to site. Averages are not shown for sites with fewer 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.

Information about Australian Indigenous seasonal calendars is available at the Indigenous Weather Knowledge website.

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