The climate in Singapore during December can be summarized as hot, humid and very wet.
December is in the winter in Singapore and is typically the coldest month of the year. Daytime maximum temperatures average around a steamy 30°C (85°F), whilst at night 23°C (73°F) is normal.
Daytime temperature | 29.5°C 85.2°F |
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Nightly temperature | 22.7°C 72.8°F |
Average temperature | 26.1°C 79°F |
Daily sunshine | 4.6 hrs |
Avg rainfall | 296 mm 11.6 ins |
Rainy days | 20 days |
Sea temperature | 28.5°C 83.3°F |
Humidity | 84% |
Windspeed | 8.6kph 5 mph |
On average December is the wettest month of the year in Singapore with around 296mm 11.6 inches of rain making it a very wet time to visit. This rainfall is typically spread over 20 days, although this may vary considerably.
On the flip side this corresponds to an average of 4.6 hours of sunshine per day.
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 Singapore in December 2025.
Best places to visit in December
Hottest month: | May | 31.1°C 88°F |
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Driest month: | June | 159mm 6.3ins |
Sunniest month: | February | 6.8hrs |
Coldest month: | December | 29.4°C 84.9°F |
Wettest month: | December | 296mm 11.7ins |