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Average water temperature in Helsinki

On this page you find the mean water temperature over the year in Helsinki (Southern Finland), Finland. Dive into the water temperature trends, highlighting the best times for swimming and other activities.


In Helsinki, water temperatures remain cool throughout the year. The warmest month is July, with an average water temperature of 15°C.

The coldest water temperature month is January, with an average temperature of 0°C. This temperature is not very suitable for swimming.


Forecast for Helsinki

Fri   Dec 27
3°C | -1°C
W 2 m/s
partly cloudy and no rain

partly cloudy and no rain

Sat   Dec 28
4°C | -1°C
SW 4 m/s
2.9 mm
overcast and rain

overcast and rain

Sun   Dec 29
6°C | 4°C
SW 7 m/s
2.3 mm
overcast and rain

overcast and rain

Interested in more climate information?

This site provides you with all the information you need about the climate in Helsinki.

Our site offers climate and forecast data for every country in the world. Are you going to Finland? On this website you can find historical weather averages for many cities in Finland. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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