Swimming in Helsinki in may 2025: Average sea temperature in may and tide times in may 2025
Average sea temperature in Helsinki in may 2025.
In may, according to seasonal norms, the sea temperature in Helsinki is:
Minimum: 35°F
Average: 44°F
Maximum: 54°F
Other useful seasonal weather averages in may:
- Outside temperature: 49°F to 55°F
- Most common weather: "Clear/Sunny"
- The wind blows at 5mph
- It rains a total of 2.6in, over 4 day(s).
Should we swim in Helsinki in may?
No... The water temperature in Helsinki in may is freezing
You won't be able to swim in Helsinki in may! The water temperature is freezing, reaching as low as 35°F (and only 54°F at best)! Our advice: if you are going to Helsinki this month, plan to sightsee and forget the beach!
Note also that in may, the climate is tolerable with an average outside temperature of 52°F, 2.5in of precipitation (over 4 days) and 75.45 % humidity.
Water and normal seasonal temperatures in Helsinki in may
| May | |||
| Average sea temperature | 44°F | ||
| Minimum sea temperature | 35°F | ||
| Maximum sea temperature | 54°F | ||
| Average outside temperature | 52°F | ||
| Maximum outside temperature | 56°F | ||
| Minimum outside temperature | 50°F | ||
| Wind speed | 11.2mph | ||
| Wind temperature | 47°F | ||
| Precipitation | 2.6in | ||
| Number of days of rain | 4 jour(s) (13%) | ||
| Humidity | 76% | ||
| Visibility in kilometers | 9.37km | ||
| Cloud cover | 40% | ||
| Our opinion | freezing swimming |
Chart of the tides in may 2025
Tide times in may 2025 in Helsinki
Swim elsewhere in Finland in may
| City | Average T° | Min. T° | Max. T° | Our opinion | Åland in may | 39°F | 48°F | freezing swimming | Kalajoki in may | 37°F | 45°F | freezing swimming | Kotka in may | 45°F | 54°F | freezing swimming | Oulu in may | 37°F | 46°F | freezing swimming | Turku in may | 40°F | 49°F | freezing swimming | Vaasa in may | 40°F | 47°F | freezing swimming |