Kiama Weather in December
What's the weather like in Kiama (New South Wales) in December 2025?
The climate in Kiama during December can be summarized as warm and a little damp.
December is in the summer in Kiama and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a comfortable 25°C (77°F), whilst at night 15°C (60°F) is normal.
| Daytime temperature | 24.8°C 76.7°F |
|---|---|
| Nightly temperature | 15.4°C 59.7°F |
| Average temperature | 20.1°C 68.2°F |
| Daily sunshine | 8 hrs |
| Avg rainfall | 98 mm 3.8 ins |
| Rainy days | 11 days |
| Sea temperature | 21.4°C 70.5°F |
| Humidity | 62% |
| Windspeed | 16.8kph 11 mph |
On average December is the 4th driest month of the year in Kiama with around 98mm 3.8 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.
On the flip side this corresponds to an average of 8 hours of sunshine per day.
December temperatures in Kiama
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 Kiama in December 2025.
Other monthly averages
Best places to visit in December
Kiama weather stats
| Hottest month: | February | 25.4°C 77.7°F |
|---|---|---|
| Driest month: | July | 69mm 2.7ins |
| Sunniest month: | August | 7.7hrs |
| Coldest month: | July | 15.7°C 60.3°F |
| Wettest month: | March | 171mm 6.7ins |
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