Swimming in Turku in september 2025: Average sea temperature in september and tide times in september 2025
Average sea temperature in Turku in september 2025.
In september, according to seasonal norms, the sea temperature in Turku is:
Minimum: 33°F
Average: 51°F
Maximum: 69°F
Other useful seasonal weather averages in september:
- Outside temperature: 54°F to 60°F
- Most common weather: "Clear/Sunny"
- The wind blows at 6.8mph
- It rains a total of 3in, over 5 day(s).
Should we swim in Turku in september?
No... The water temperature in Turku in september is freezing
You won't be able to swim in Turku in september! The water temperature is freezing, reaching as low as 33°F (and only 69°F at best)! Our advice: if you are going to Turku this month, plan to sightsee and forget the beach!
Note also that in september, the climate is good with an average outside temperature of 57°F, 3in of precipitation (over 5 days) and 83.37 % humidity.
Water and normal seasonal temperatures in Turku in september
| September | |||
| Average sea temperature | 51°F | ||
| Minimum sea temperature | 33°F | ||
| Maximum sea temperature | 69°F | ||
| Average outside temperature | 58°F | ||
| Maximum outside temperature | 61°F | ||
| Minimum outside temperature | 54°F | ||
| Wind speed | 13.1mph | ||
| Wind temperature | 52°F | ||
| Precipitation | 3in | ||
| Number of days of rain | 5 jour(s) (16%) | ||
| Humidity | 84% | ||
| Visibility in kilometers | 9.4km | ||
| Cloud cover | 43% | ||
| Our opinion | freezing swimming |
Chart of the tides in september 2025
Tide times in september 2025 in Turku
Swim elsewhere in Finland in september
| City | Average T° | Min. T° | Max. T° | Our opinion | Helsinki in september | 60°F | 67°F | cold swimming | Åland in september | 50°F | 69°F | freezing swimming | Kalajoki in september | 55°F | 61°F | freezing swimming | Kotka in september | 59°F | 66°F | freezing swimming | Oulu in september | 55°F | 62°F | freezing swimming | Vaasa in september | 55°F | 62°F | freezing swimming |