Negombo Weather in December
What's the weather like in Negombo (Western) in December 2025?
The climate in Negombo during December can be summarized as hot, humid and wet.
December is in the winter in Negombo and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around a steamy 30°C (87°F), whilst at night 22°C (72°F) is normal.
| Daytime temperature | 30.4°C 86.7°F |
|---|---|
| Nightly temperature | 22.4°C 72.3°F |
| Average temperature | 26.4°C 79.5°F |
| Daily sunshine | 7.2 hrs |
| Avg rainfall | 153 mm 6 ins |
| Rainy days | 10 days |
| Sea temperature | 27.8°C 82.1°F |
| Humidity | 79% |
| Windspeed | 8.6kph 5 mph |
On average December is the 6th driest month of the year in Negombo with around 153mm 6 inches of rain making it a wet time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.2 hours of sunshine per day.
December temperatures in Negombo
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 Negombo in December 2025.
Other monthly averages
Best places to visit in December
Negombo weather stats
| Hottest month: | April | 32.4°C 90.3°F |
|---|---|---|
| Driest month: | January | 48mm 1.9ins |
| Sunniest month: | March | 9.2hrs |
| Coldest month: | January | 30.9°C 87.6°F |
| Wettest month: | October | 351mm 13.8ins |
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