Serang Weather in December
What's the weather like in Serang (East Java) in December 2025?
The climate in Serang during December can be summarized as very hot, humid and very wet.
December is in the summer in Serang and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a steamy 34°C (92°F), whilst at night 23°C (73°F) is normal.
| Daytime temperature | 33.5°C 92.3°F |
|---|---|
| Nightly temperature | 22.7°C 72.9°F |
| Average temperature | 28.1°C 82.6°F |
| Daily sunshine | 8.2 hrs |
| Avg rainfall | 322 mm 12.7 ins |
| Rainy days | 14 days |
| Sea temperature | 29°C 84.2°F |
| Humidity | 79% |
| Windspeed | 11.9kph 7 mph |
On average December is the wettest month of the year in Serang with around 322mm 12.7 inches of rain making it a very wet time to visit. This rainfall is typically spread over 14 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 Serang
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 Serang in December 2025.
Other monthly averages
Best places to visit in December
Serang weather stats
| Hottest month: | November | 33.8°C 92.8°F |
|---|---|---|
| Driest month: | August | 24mm 0.9ins |
| Sunniest month: | July | 10.6hrs |
| Coldest month: | July | 30.9°C 87.6°F |
| Wettest month: | December | 322mm 12.7ins |
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