Weather in Dehiwala Mount Lavinia: December
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Average day temperature: | 86.7°F |
| Average night temperature: | 76.5°F | |
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Sea water temperature: | 83.4°F |
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Number of sunny days: | 9 days |
| Day length: | 11.7 - 11.8 hours | |
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Number of rainy days: | 10 days |
| Precipitation totals: | 5.9 in. | |
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forecast
| Dehiwala Mount Lavinia |
temperature
| Dehiwala Mount Lavinia |
Air temperature in December, °F
The highest day temperature during December of 2025 was 84°F. At the same time the lowest night temperature was 73°F. Daily and nightly averages during December were 83.0°F and 74.9°F.
Sea water temperature in Dehiwala Mount Lavinia in December, °F
The average sea water temperature in December of 2025 was 82.5°F. The highest and lowest sea temperatures during the month were 83.1°F and 81.9°F.
Mostly all days in December are partly cloudy but sunny or cloudy days are also possible.
Precipitation total in December, in.
Precipitation total value in Dehiwala Mount Lavinia in December is 5.8 in. It makes december one of the most dry months of the year.
The average wind speed value in December is 8.1 mph
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in December is: 6.2.
Best time for vacation in Dehiwala Mount Lavinia
Dehiwala Mount Lavinia on a weather map
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