Swimming in Helsinki in october 2025: Average sea temperature in october and tide times in october 2025
Average sea temperature in Helsinki in october 2025.
In october, according to seasonal norms, the sea temperature in Helsinki is:
Minimum: 44°F
Average: 51°F
Maximum: 59°F
Other useful seasonal weather averages in october:
- Outside temperature: 44°F to 48°F
- Most common weather: "Clear/Sunny"
- The wind blows at 2.5mph
- It rains a total of 3.6in, over 6 day(s).
Should we swim in Helsinki in october?
No... The water temperature in Helsinki in october is freezing
You won't be able to swim in Helsinki in october! The water temperature is freezing, reaching as low as 44°F (and only 59°F at best)! Our advice: if you are going to Helsinki this month, plan to sightsee and forget the beach!
Note also that in october, the climate is bad with an average outside temperature of 46°F, 3.6in of precipitation (over 6 days) and 86.77 % humidity.
Water and normal seasonal temperatures in Helsinki in october
| October | |||
| Average sea temperature | 51°F | ||
| Minimum sea temperature | 44°F | ||
| Maximum sea temperature | 59°F | ||
| Average outside temperature | 47°F | ||
| Maximum outside temperature | 49°F | ||
| Minimum outside temperature | 45°F | ||
| Wind speed | 13.7mph | ||
| Wind temperature | 40°F | ||
| Precipitation | 3.6in | ||
| Number of days of rain | 6 jour(s) (20%) | ||
| Humidity | 87% | ||
| Visibility in kilometers | 8.9km | ||
| Cloud cover | 58% | ||
| Our opinion | freezing swimming |
Chart of the tides in october 2025
Tide times in october 2025 in Helsinki
Swim elsewhere in Finland in october
| City | Average T° | Min. T° | Max. T° | Our opinion | Åland in october | 44°F | 56°F | freezing swimming | Kalajoki in october | 47°F | 52°F | freezing swimming | Kotka in october | 51°F | 58°F | freezing swimming | Oulu in october | 46°F | 54°F | freezing swimming | Turku in october | 44°F | 56°F | freezing swimming | Vaasa in october | 47°F | 53°F | freezing swimming |