Monday 5 January 2026 - Monthly Climate Summary for Australian Capital Territory - Product code IDCKGC15L0
Australian Capital Territory in December 2025
Rainfall
- Rainfall totals for December were below average at all sites across Australian Capital Territory.
- December rainfall totals ranged from around 40% to around 55% of average across Australian Capital Territory.
Temperature
- Mean maximum temperatures for December at all sites across Australian Capital Territory were above average.
- December mean maximum temperatures for Australian Capital Territory ranged from 1.0 °C above average at Mount Ginini AWS to 1.6 °C above average at Canberra Airport.
- Mean minimum temperatures for December at all sites across Australian Capital Territory were below average.
- December mean minimum temperatures for Australian Capital Territory ranged from 1.9 °C below average at Canberra Airport to 0.7 °C below average at Mount Ginini AWS.
- Tuggeranong (Isabella Plains) AWS had its equal coldest December night (lowest daily minimum temperature) on record.
Canberra Airport
- Total rainfall for Canberra Airport was 37.8 mm, which is 49% of the long-term average of 77.4 mm.
- The mean daily maximum temperature for Canberra Airport was 28.9 °C, which is 1.6 °C above the long-term average of 27.3 °C.
- The warmest day was 39.4 °C on the 19th, and the coolest day was on the 1st when the temperature reached 19.0 °C.
- The mean daily minimum temperature for Canberra Airport was 10.1 °C, which is 1.9 °C below the long-term average of 12.0 °C.
- The coldest morning was -0.3 °C on the 2nd, and the warmest morning was on the 20th when the minimum temperature was 17.1 °C.
Extremes Records Summaries Daily observations Important notes the top
| Extremes in December 2025 | |
|---|---|
| Hottest day |
39.4 °C at Canberra Airport on the 19th |
| Warmest days on average |
28.9 °C at Canberra Airport |
| Coolest days on average |
18.9 °C at Mount Ginini AWS |
| Coldest day |
7.3 °C at Mount Ginini AWS on the 1st |
| Coldest night |
-2.7 °C at Mount Ginini AWS on the 2nd |
| Coolest nights on average |
6.8 °C at Mount Ginini AWS |
| Warmest nights on average |
10.8 °C at Tuggeranong (Isabella Plains) AWS |
| Warmest night |
18.0 °C at Mount Ginini AWS on the 19th |
| Warmest on average overall |
19.7 °C at Tuggeranong (Isabella Plains) AWS |
| Coolest on average overall |
12.8 °C at Mount Ginini AWS |
| Wettest overall |
58.6 mm at Mount Ginini AWS |
| Wettest day |
32.0 mm at Mount Ginini AWS on the 22nd |
| Strongest wind gust |
81.0 km/h at Mount Ginini AWS on the 21st |
Extremes Records Summaries Daily observations Important notes the top
| Record lowest December temperature | ||||||
|---|---|---|---|---|---|---|
| New record (°C) |
Old record |
Years of record |
Average for December |
|||
| Tuggeranong (Isabella Plains) AWS | 1.2 | on the 2nd | =1.2 | on 27 Dec 2001 | 30 | 12.4 |
Extremes Records Summaries Daily observations Important notes the top
| Summary statistics for December 2025 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperatures (°C) |
Minimum temperatures (°C) |
Rainfall (millimetres) |
||||||||||
| Mean for December 2025 |
Diff from average |
Highest for December 2025 |
Mean for December 2025 |
Diff from average |
Lowest for December 2025 |
Total for December 2025 |
Average for December |
Rank of December 2025 |
Fraction of December average |
|||
| Canberra Airport | 28.9 | +1.6 | 39.4 | 19th | 10.1 | -1.9 | -0.3 | 2nd | 37.8 | 77.4 | low | 49% |
| Mount Ginini AWS | 18.9 | +1.0 | 27.4 | 19th | 6.8 | -0.7 | -2.7 | 2nd | 58.6 | 111.8 | low | 52% |
| Tuggeranong (Isabella Plains) AWS | 28.6 | +1.4 | 38.3 | 19th | 10.8 | -1.6 | 1.2 | 2nd | 30.4 | 69.6 | average | 44% |
Extremes Records Summaries Daily observations Important notes the top
| Daily maximum temperatures for December 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 | 31 | |
| Canberra Airport | 19.0 | 21.9 | 27.9 | 31.4 | 36.0 | 34.9 | 25.8 | 28.1 | 33.7 | 33.1 | 23.9 | 23.6 | 23.3 | 27.2 | 27.2 | 26.1 | 33.7 | 37.4 | 39.4 | 34.0 | 28.4 | 27.5 | 27.9 | 29.0 | 27.6 | 22.1 | 26.0 | 26.1 | 29.7 | 34.6 | 28.1 |
| Mount Ginini AWS | 7.3 | 12.3 | 17.8 | 21.0 | 24.8 | 23.0 | 15.8 | 18.7 | 22.7 | 23.2 | 16.7 | 14.3 | 16.5 | 15.6 | 18.8 | 18.8 | 24.3 | 27.0 | 27.4 | 22.4 | 15.2 | 17.6 | 17.6 | 18.2 | 16.7 | 13.1 | 16.4 | 17.8 | 21.6 | 23.7 | 19.5 |
| Tuggeranong (Isabella Plains) AWS | 18.5 | 21.5 | 28.5 | 30.9 | 34.6 | 34.1 | 26.3 | 28.1 | 33.4 | 32.8 | 23.5 | 24.4 | 24.3 | 26.7 | 27.6 | 26.5 | 34.1 | 37.3 | 38.3 | 33.4 | 24.6 | 27.3 | 28.2 | 28.6 | 27.9 | 21.1 | 25.7 | 26.2 | 29.9 | 33.9 | 27.8 |
|
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 December 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 | 31 | |
| Canberra Airport | 7.4 | -0.3 | 3.2 | 6.4 | 12.9 | 15.4 | 14.8 | 9.5 | 7.5 | 12.7 | 11.0 | 14.3 | 8.7 | 12.9 | 5.9 | 12.5 | 11.8 | 13.6 | 13.2 | 17.1 | 15.9 | 13.0 | 11.8 | 6.7 | 7.6 | 7.4 | 6.5 | 7.9 | 4.7 | 8.4 | 12.9 |
| Mount Ginini AWS | 0.3 | -2.7 | 2.5 | 8.1 | 12.4 | 16.3 | 3.2 | 2.6 | 8.4 | 10.2 | 6.5 | 6.7 | 6.6 | 6.7 | 4.6 | 4.2 | 7.1 | 14.9 | 18.0 | 10.7 | 13.3 | 5.6 | 5.5 | 5.7 | 4.2 | -0.5 | 0.1 | 1.6 | 5.9 | 11.0 | 11.1 |
| Tuggeranong (Isabella Plains) AWS | 6.8 | 1.2 | 4.4 | 6.4 | 13.4 | 14.6 | 15.2 | 12.3 | 7.2 | 14.7 | 11.5 | 14.4 | 8.8 | 11.5 | 6.9 | 13.2 | 13.0 | 14.9 | 12.9 | 17.7 | 16.9 | 13.1 | 11.0 | 8.4 | 9.4 | 7.5 | 8.5 | 9.4 | 7.5 | 10.0 | 13.0 |
|
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 December 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 | 31 | ||
| Aranda (Bindaga St) | 0.2 | 0.4 | - | - | - | - | 0.4 | - | - | - | - | - | - | 4.8 | - | - | - | - | - | 3.8 | 3.6 | 28.4 | - | - | - | - | - | - | - | - | - | |
| Bruce (Australian Institute of Sport) | - | 2.6 | - | - | - | - | - | - | - | - | - | - | → | → | 4.4 | - | - | - | - | → | → | 29.0 | ||||||||||
| Canberra (Australian National Botanic Ga | 0.4 | 0.8 | - | - | - | - | 0.4 | - | - | - | - | - | 1.1 | 5.0 | - | - | - | - | 0.4 | 4.2 | 2.6 | 28.0 | - | - | - | - | - | - | - | - | - | |
| Canberra Airport | 0.4 | - | - | - | - | - | 0.4 | 0.2 | - | - | - | - | 1.6 | 4.2 | - | - | - | - | - | 3.6 | 0.8 | 21.2 | - | - | - | - | - | - | - | - | 5.4 | |
| Mount Ginini AWS | 2.0 | 0.2 | - | - | - | - | 5.6 | - | - | - | 1.6 | 1.4 | 1.6 | 6.4 | 0.2 | - | - | - | - | 6.8 | 0.2 | 32.0 | - | - | - | - | - | - | - | - | 0.6 | |
| Tuggeranong (Isabella Plains) AWS | 0.2 | - | - | - | - | - | 0.8 | - | - | - | 0.4 | - | - | 1.8 | - | - | - | - | - | 3.8 | 0.6 | 22.0 | - | - | - | - | - | - | - | - | 0.8 | |
|
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 Monday 5 January 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
