Cairns Weather in December
What's the weather like in Cairns (Queensland) in December 2025?
The climate in Cairns during December can be summarized as hot and wet.
December is in the summer in Cairns and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a warm 31°C (88°F), whilst at night 23°C (73°F) is normal.
| Daytime temperature | 30.9°C 87.5°F |
|---|---|
| Nightly temperature | 22.6°C 72.6°F |
| Average temperature | 26.7°C 80.1°F |
| Daily sunshine | 8.2 hrs |
| Avg rainfall | 188 mm 7.4 ins |
| Rainy days | 9 days |
| Sea temperature | 28.4°C 83.1°F |
| Humidity | 65% |
| Windspeed | 14kph 9 mph |
On average December is the 5th wettest month of the year in Cairns with around 188mm 7.4 inches of rain making it a wet time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.2 hours of sunshine per day.
December temperatures in Cairns
December rainfall
December hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Cairns in December 2025.
Other monthly averages
Best places to visit in December
Cairns weather stats
| Hottest month: | January | 30.8°C 87.4°F |
|---|---|---|
| Driest month: | August | 38mm 1.5ins |
| Sunniest month: | October | 9hrs |
| Coldest month: | July | 24.6°C 76.3°F |
| Wettest month: | March | 442mm 17.4ins |
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