Adelaide Weather in December
What's the weather like in Adelaide (South Australia) in December 2025?
The climate in Adelaide during December can be summarized as warm and dry.
December is in the summer in Adelaide and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a comfortable 26°C (79°F), whilst at night 14°C (57°F) is normal.
| Daytime temperature | 25.9°C 78.6°F |
|---|---|
| Nightly temperature | 13.9°C 57°F |
| Average temperature | 19.9°C 67.8°F |
| Daily sunshine | 9.8 hrs |
| Avg rainfall | 27 mm 1.1 ins |
| Rainy days | 6 days |
| Sea temperature | 18.7°C 65.7°F |
| Humidity | 45% |
| Windspeed | 14.8kph 9 mph |
On average December is the 4th driest month of the year in Adelaide with around 27mm 1.1 inches of rain making it a dry time to visit. This rainfall is typically spread over 6 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.8 hours of sunshine per day.
December temperatures in Adelaide
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 Adelaide in December 2025.
Other monthly averages
Best places to visit in December
Adelaide weather stats
| Hottest month: | January | 28.2°C 82.8°F |
|---|---|---|
| Driest month: | February | 18mm 0.7ins |
| Sunniest month: | February | 10.2hrs |
| Coldest month: | July | 14.8°C 58.6°F |
| Wettest month: | July | 76mm 3ins |
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Locations nearby
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