Weather in Porvoo: May
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Average day temperature: | 50.9°F |
| Average night temperature: | 44.5°F | |
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Sea water temperature: | 45.7°F |
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Number of sunny days: | 13 days |
| Day length: | 16.0 - 18.3 hours | |
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Number of rainy days: | 3 days |
| Precipitation totals: | 1.4 in. | |
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forecast
| Porvoo |
temperature
| Porvoo |
Air temperature in May, °F
The highest day temperature during May of 2026 was 56°F. At the same time the lowest night temperature was 36°F. Daily and nightly averages during May were 49.1°F and 44.6°F.
Sea water temperature in Porvoo in May, °F
The average sea water temperature in May of 2026 was 48.9°F. The highest and lowest sea temperatures during the month were 56.1°F and 39.4°F.
Number of sunny, partly cloudy and cloudy days in May is almost equal.
Precipitation total in May, in.
Precipitation total value in Porvoo in May is 1.4 in. Other months of the year show relatively similar values.
The average wind speed value in May is 10.2 mph It makes May lest windy month of the year.
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: 9.6.
Best time for vacation in Porvoo
Porvoo on a weather map
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