Weather in Helsinki: May
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Average day temperature: | 54.0°F |
| Average night temperature: | 45.1°F | |
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Sea water temperature: | 44.8°F |
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Number of sunny days: | 14 days |
| Day length: | 16.0 - 18.3 hours | |
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Number of rainy days: | 3 days |
| Precipitation totals: | 1.5 in. | |
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forecast
| Helsinki |
temperature
| Helsinki |
Air temperature in May, °F
The highest day temperature during May of 2023 was 65°F. At the same time the lowest night temperature was 30°F. Day and night temperature averages during May were 55.0°F and 44.2°F.
Sea water temperature in Helsinki in May, °F
The average sea water temperature in May of 2023 was 44.6°F. The highest and lowest sea temperatures during the month were 51.1°F and 38.7°F.
Mostly all days in May are sunny but cloudy days are also possible.
Precipitation total in May, in.
Precipitation total value in Helsinki in May is 1.6 in. Other months of the year show relatively similar values.
The average wind speed value in May is 8.4 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 Helsinki
Helsinki on a weather map
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