Monday 31 August 2026 - Seasonal Climate Summary for Australian Capital Territory - Product code IDCKGC25L0
Australian Capital Territory in winter 2026
Rainfall
- Rainfall totals for winter were above average at all sites across Australian Capital Territory.
- Winter rainfall totals ranged from around 110% to around 127% of average across the Territory.
- The wettest day was 52.6 mm at Mount Ginini AWS on 10 August, which also recorded the wettest overall of 386.4 mm.
Temperature
- Mean maximum temperatures for winter at all sites across Australian Capital Territory were above average.
- Winter mean maximum temperatures for the Territory ranged from 1.1 °C above average at Canberra Airport to 1.6 °C above average at Mount Ginini AWS.
- Tuggeranong (Isabella Plains) AWS had its highest winter mean maximum temperature on record.
- The warmest day was 21.3 °C at Tuggeranong (Isabella Plains) AWS on 30 August.
- The coldest day was -1.6 °C at Mount Ginini AWS on 29 July.
- Mean minimum temperatures for winter at all sites across the Territory were above average.
- Winter mean minimum temperatures for the Territory ranged from 0.5 °C above average at Tuggeranong (Isabella Plains) AWS to 1.4 °C above average at Mount Ginini AWS.
- Tuggeranong (Isabella Plains) AWS had its highest winter mean temperature on record.
- The warmest night was 11.7 °C at Canberra Airport on 19 June.
- The coldest night was -6.2 °C at Tuggeranong (Isabella Plains) AWS on 20 July.
Canberra Airport
- Total rainfall for Canberra Airport was 137.8 mm, which is 110% of the long-term average at the current site of 125.2 mm.
- The mean daily maximum temperature for Canberra Airport was 14.6 °C, which is 1.1 °C above the long-term average at the current site of 13.5 °C.
- The warmest day was 20.8 °C on 30 August 2026, and the coolest day was on 13 July 2026 when the temperature reached 9.5 °C.
- The mean daily minimum temperature for Canberra Airport was 1.6 °C, which is 0.9 °C above the long-term average at the current site of 0.7 °C.
- The coldest morning was -5.9 °C on 31 July 2026, and the warmest morning was on 19 June 2026 when the minimum temperature was 11.7 °C.
Extremes Records Summaries Important notes the top
| Extremes in winter 2026 | |
|---|---|
| Hottest day |
21.3 °C at Tuggeranong (Isabella Plains) AWS on 30 August |
| Warmest days on average |
14.8 °C at Tuggeranong (Isabella Plains) AWS |
| Coolest days on average |
5.1 °C at Mount Ginini AWS |
| Coldest day |
-1.6 °C at Mount Ginini AWS on 29 July |
| Coldest night |
-6.2 °C at Tuggeranong (Isabella Plains) AWS on 20 July |
| Coolest nights on average |
-0.3 °C at Mount Ginini AWS |
| Warmest nights on average |
1.6 °C at Canberra Airport |
| Warmest night |
11.7 °C at Canberra Airport on 19 June |
| Warmest on average overall |
8.1 °C at Tuggeranong (Isabella Plains) AWS |
| Coolest on average overall |
2.4 °C at Mount Ginini AWS |
| Wettest overall |
386.4 mm at Mount Ginini AWS |
| Wettest day |
52.6 mm at Mount Ginini AWS on 10 August |
| Strongest wind gust |
87.0 km/h at Mount Ginini AWS on 3 July |
Extremes Records Summaries Important notes the top
| Record highest winter mean maximum temperature | |||||
|---|---|---|---|---|---|
| New record (°C) |
Old record |
Years of record |
Average for Winter |
||
| Tuggeranong (Isabella Plains) AWS | 14.8 | 14.6 | in 2023 | 28 | 13.3 |
| Record highest winter mean temperature | |||||
|---|---|---|---|---|---|
| New record (°C) |
Old record |
Years of record |
Average for Winter |
||
| Tuggeranong (Isabella Plains) AWS | 8.1 | 7.9 | in 2023 | 28 | 7.0 |
Extremes Records Summaries Important notes the top
| Summary statistics for winter 2026 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperatures (°C) |
Minimum temperatures (°C) |
Rainfall (millimetres) |
||||||||||
| Mean for Winter 2026 |
Diff from average |
Highest for Winter 2026 |
Mean for Winter 2026 |
Diff from average |
Lowest for Winter 2026 |
Total for Winter 2026 |
Average for Winter |
Rank of Winter 2026 |
Fraction of Winter average |
|||
| Canberra Airport | 14.6 | +1.1 | 20.8 | 30 Aug 2026 | 1.6 | +0.9 | -5.9 | 31 Jul 2026 | 137.8 | 125.2 | average | 110% |
| Mount Ginini AWS | 5.1 | +1.6 | 12.9 | 20 Jul 2026 | -0.3 | +1.4 | -6.0 | 24 Jul 2026 | 386.4 | 274.9 | high | 140% |
| Tuggeranong (Isabella Plains) AWS | 14.8 | +1.5 | 21.3 | 30 Aug 2026 | 1.2 | +0.5 | -6.2 | 20 Jul 2026 | 175.0 | 137.7 | high | 127% |
Extremes Records Summaries Important notes the top
Notes
The Seasonal 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 Monday 31 August 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
