Weather in Dehiwala Mount Lavinia: May
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Average day temperature: | 87.5°F |
| Average night temperature: | 81.4°F | |
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Sea water temperature: | 85.3°F |
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Number of sunny days: | 3 days |
| Day length: | 12.4 - 12.5 hours | |
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Number of rainy days: | 18 days |
| Precipitation totals: | 14.4 in. | |
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forecast
| Dehiwala Mount Lavinia |
temperature
| Dehiwala Mount Lavinia |
Air temperature in May, °F
The highest day temperature during May of 2025 was 87°F. At the same time the lowest night temperature was 78°F. Daily and nightly averages during May were 84.5°F and 80.6°F.
Sea water temperature in Dehiwala Mount Lavinia in May, °F
The average sea water temperature in May of 2025 was 85.7°F. The highest and lowest sea temperatures during the month were 86.7°F and 84.6°F.
Mostly all days in May are cloudy but sunny and partly cloudy days are also possible.
Precipitation total in May, in.
Precipitation total value in Dehiwala Mount Lavinia in May is 18.7 in. It makes may one of the most rainy months of the year.
The average wind speed value in May is 9.8 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 May is: 4.1.
Best time for vacation in Dehiwala Mount Lavinia
Dehiwala Mount Lavinia on a weather map
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