Best time to swim in Finland Sea temperature by month
Do you want to go to the seaside in Finland? But when should you go to be sure to enjoy good sea water temperature and be able to swim for a long time? Now or another month during the year? On this page, find the sea temperature by month in Finland.
Swimming in Finland by month
Discover swimming conditions in detail in Finland by month below. Click on the links for each month to see details about the sea temperature in the cities of: Helsinki, Åland, Kalajoki, Kotka and Oulu.
| Month | Average Sea temperature | Our opinion |
|---|---|---|
| January | 31°F to 42°F | freezing swimming |
| February | 31°F to 41°F | freezing swimming |
| March | 32°F to 41°F | freezing swimming |
| April | 32°F to 41°F | freezing swimming |
| May | 36°F to 45°F | freezing swimming |
| June | 46°F to 57°F | freezing swimming |
| July | 50°F to 67°F | cool swimming* |
| August | 51°F to 66°F | cool swimming* |
| September | 49°F to 60°F | cold swimming* |
| October | 44°F to 52°F | freezing swimming |
| November | 39°F to 46°F | freezing swimming |
| December | 35°F to 44°F | freezing swimming |
* in at least part of the area.
Where and when should you swim in Finland?
Best time to swim in Åland
No month is favorable as far as sea temperature for swimming in Åland.
Best time to swim in Kalajoki
No month is favorable as far as sea temperature for swimming in Kalajoki.
Other cities and places in Finland:
Water temperatures in Finland over the entire year
On this chart, we show you the variation of the average sea water temperature in Finland for the cities of: Helsinki, Åland, Kalajoki, Kotka and Oulu.