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Helsinki weather
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The weather guide for Helsinki, Finland shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by MeteoBlue. Find out more about our data sources.
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Which is the hottest month in Helsinki?
The hottest time of year in Helsinki is normally July. Expect maximum daytime temperatures to reach 21°C.
Which month has the most rain in Helsinki?
In terms of rainfall, August is usually the wettest month in Helsinki with 77mm on average. There are normally 16 days in August with some rain.
When is it sunniest in Helsinki?
The sunniest time of year in Helsinki is normally June with bright sunshine on average for 50% of daylight hours; that's 9 hours of sunshine per day.
When is the sea warmest in Helsinki?
The sea is usually at its warmest in Helsinki in August when the water temperature reaches 16°C.
Metric (°C / mm) | Imperial (°F / inches)
Compare Helsinki weather with the USA
Below the Helsinki weather chart shows average maximum daytime temperature for Helsinki, Finland and the USA (Washington).
Maximum daytime temperature (°C)
Helsinki, Finland
USA (Washington)
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Metric (°C / mm) | Imperial (°F / inches)
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