Wednesday 30 September 2026 - Monthly Climate Summary for Australian Capital Territory - Product code IDCKGC15L0
Australian Capital Territory in September 2026
Rainfall
- Rainfall totals for September were below average at all sites across Australian Capital Territory.
- September rainfall totals ranged from around 14% to around 47% of average across the Territory.
- The wettest day was 24.0 mm at Mount Ginini AWS on the 6th, which also recorded the wettest overall with 40.2 mm of total rainfall.
Temperature
- Mean maximum temperatures for September at all sites across the Territory were above average.
- September mean maximum temperatures for the Territory ranged from 1.6 °C above average at Canberra Airport to 3.0 °C above average at Mount Ginini AWS.
- The warmest day was 27.6 °C at Tuggeranong (Isabella Plains) AWS on the 26th.
- The coldest day was 4.0 °C at Mount Ginini AWS on the 27th.
- Tuggeranong (Isabella Plains) AWS had its highest September mean temperature on record.
- Mean minimum temperatures for September at all sites across the Territory were above average.
- September mean minimum temperatures for the Territory ranged from 0.5 °C above average at Tuggeranong (Isabella Plains) AWS to 1.8 °C above average at Mount Ginini AWS.
- The warmest night was 11.9 °C at Tuggeranong (Isabella Plains) AWS on the 3rd.
- The coldest night was -6.1 °C at Mount Ginini AWS on the 16th.
Canberra Airport
- Total rainfall for Canberra Airport was 11.2 mm, which is 22% of the long-term average at the current site of 50.5 mm.
- The mean daily maximum temperature for Canberra Airport was 19.7 °C, which is 1.6 °C above the long-term average at the current site of 18.1 °C.
- The warmest day was 27.2 °C on the 26th, and the coolest day was on the 27th when the temperature reached 13.5 °C.
- The mean daily minimum temperature for Canberra Airport was 4.4 °C, which is 1.2 °C above the long-term average at the current site of 3.2 °C.
- The coldest morning was -3.5 °C on the 17th, and the warmest morning was on the 3rd when the minimum temperature was 11.9 °C.
Extremes Records Summaries Daily observations Important notes the top
| Extremes in September 2026 | |
|---|---|
| Hottest day |
27.6 °C at Tuggeranong (Isabella Plains) AWS on the 26th |
| Warmest days on average |
20.0 °C at Tuggeranong (Isabella Plains) AWS |
| Coolest days on average |
11.6 °C at Mount Ginini AWS |
| Coldest day |
4.0 °C at Mount Ginini AWS on the 27th |
| Coldest night |
-6.1 °C at Mount Ginini AWS on the 16th |
| Coolest nights on average |
2.1 °C at Mount Ginini AWS |
| Warmest nights on average |
4.4 °C at Canberra Airport |
| Warmest night |
11.9 °C at Tuggeranong (Isabella Plains) AWS on the 3rd |
| Warmest on average overall |
12.2 °C at Tuggeranong (Isabella Plains) AWS |
| Coolest on average overall |
6.7 °C at Mount Ginini AWS |
| Wettest overall |
40.2 mm at Mount Ginini AWS |
| Wettest day |
24.0 mm at Mount Ginini AWS on the 6th |
| Strongest wind gust |
74.0 km/h at Mount Ginini AWS on the 21st |
Extremes Records Summaries Daily observations Important notes the top
| Record highest September mean temperature | |||||
|---|---|---|---|---|---|
| New record (°C) |
Old record |
Years of record |
Average for September |
||
| Tuggeranong (Isabella Plains) AWS | 12.2 | =12.2 | in 2013 | 31 | 10.7 |
Extremes Records Summaries Daily observations Important notes the top
| Summary statistics for September 2026 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperatures (°C) |
Minimum temperatures (°C) |
Rainfall (millimetres) |
||||||||||
| Mean for September 2026 |
Diff from average |
Highest for September 2026 |
Mean for September 2026 |
Diff from average |
Lowest for September 2026 |
Total for September 2026 |
Average for September |
Rank of September 2026 |
Fraction of September average |
|||
| Canberra Airport | 19.7 | +1.6 | 27.2 | 26th | 4.4 | +1.2 | -3.5 | 17th | 11.2 | 50.5 | lowest | 22% |
| Mount Ginini AWS | 11.6 | +3.0 | 19.1 | 26th | 2.1 | +1.8 | -6.1 | 16th | 40.2 | 84.8 | low | 47% |
| Tuggeranong (Isabella Plains) AWS | 20.0 | +2.2 | 27.6 | 26th | 4.2 | +0.5 | -1.8 | 18th | 7.8 | 56.3 | lowest | 14% |
Extremes Records Summaries Daily observations Important notes the top
| Daily maximum temperatures for September 2026 | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 20.2 | 21.7 | 17.9 | 18.4 | 16.3 | 17.6 | 18.4 | 16.9 | 15.1 | 17.1 | 19.2 | 21.6 | 21.6 | 21.7 | 19.7 | 13.7 | 16.7 | 21.9 | 24.8 | 24.5 | 22.6 | 15.3 | 20.8 | 24.5 | 25.4 | 27.2 | 13.5 | 17.8 | 20.5 | |
| Mount Ginini AWS | 8.8 | 7.6 | 6.4 | 11.3 | 7.0 | 10.3 | 7.2 | 11.5 | 13.8 | 14.2 | 13.2 | 8.4 | 10.1 | 7.8 | 10.8 | 14.8 | 15.3 | 15.4 | 16.1 | 5.5 | 15.3 | 18.3 | 19.1 | 4.0 | 9.6 | 14.9 | ||||
| Tuggeranong (Isabella Plains) AWS | 20.6 | 21.6 | 18.1 | 17.8 | 15.8 | 19.0 | 18.6 | 17.6 | 15.0 | 17.5 | 19.5 | 22.0 | 20.6 | 20.7 | 19.7 | 13.7 | 17.1 | 23.3 | 26.5 | 25.0 | 23.7 | 14.0 | 21.4 | 24.6 | 25.9 | 27.6 | 13.0 | 18.4 | 20.9 | |
|
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 2026 | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 1.2 | 10.3 | 11.9 | 4.9 | 9.9 | 7.6 | 4.5 | 1.6 | 1.7 | -2.7 | -0.1 | 5.2 | 2.4 | 6.4 | 5.0 | 0.3 | -3.5 | -1.3 | 2.7 | 4.0 | 8.2 | 7.8 | 7.3 | 7.9 | 7.4 | 6.7 | 8.9 | 7.4 | -0.7 | |
| Mount Ginini AWS | 3.2 | 0.9 | 2.8 | -0.3 | 1.0 | -2.0 | 1.4 | -4.2 | 3.0 | 4.6 | 3.7 | 4.9 | 3.1 | -6.1 | -2.2 | 3.5 | 2.3 | 6.9 | 7.9 | -1.5 | 0.0 | 9.1 | 9.4 | 0.7 | -0.2 | 0.9 | ||||
| Tuggeranong (Isabella Plains) AWS | 0.4 | 8.4 | 11.9 | 5.1 | 7.2 | 6.6 | 6.7 | 6.3 | 1.1 | -1.8 | -0.6 | 1.7 | 1.7 | 5.5 | 3.6 | 1.2 | -1.5 | -1.8 | 0.1 | 3.2 | 7.4 | 7.3 | 7.7 | 5.2 | 9.0 | 7.6 | 9.0 | 8.6 | -0.2 | |
|
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 2026 | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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) | - | - | 4.2 | - | 0.4 | 4.6 | - | ||||||||||||||||||||||||
| Bruce (Australian Institute of Sport) | - | - | 4.0 | - | → | → | 5.0 | ||||||||||||||||||||||||
| Canberra Airport | - | - | 5.8 | - | - | 5.0 | 0.2 | - | - | - | - | - | 0.2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | |
| Mount Ginini AWS | 9.8 | - | 3.4 | 24.0 | - | 0.2 | - | - | - | - | - | - | 1.0 | - | - | - | - | - | - | 0.2 | 0.4 | - | - | 0.4 | 0.8 | - | - | ||||
| Tuggeranong (Isabella Plains) AWS | - | - | 3.0 | - | - | 4.8 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | ||
|
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 | |||||||||||||||||
Extremes Records Summaries Daily observations Important notes the top
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 30 September 2026. 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.
Unless otherwise noted, all maps, graphs and diagrams in this page are licensed under the Creative Commons Attribution 4.0 International Licence
