Swimming in Tromso in september 2025: Average sea temperature in september and tide times in september 2025
Average sea temperature in Tromso in september 2025.
In september, according to seasonal norms, the sea temperature in Tromso is:
Minimum: 48°F
Average: 51°F
Maximum: 54°F
Other useful seasonal weather averages in september:
- Outside temperature: 43°F to 49°F
- Most common weather: "Moderate rain at times"
- The wind blows at 2.5mph
- It rains a total of 7.3in, over 11 day(s).
Should we swim in Tromso in september?
No... The water temperature in Tromso in september is freezing
You won't be able to swim in Tromso in september! The water temperature is freezing, reaching as low as 48°F (and only 54°F at best)! Our advice: if you are going to Tromso this month, plan to sightsee and forget the beach!
Note also that in september, the climate is bad with an average outside temperature of 46°F, 7.3in of precipitation (over 11 days) and 86.37 % humidity.
Water and normal seasonal temperatures in Tromso in september
| September | |||
| Average sea temperature | 51°F | ||
| Minimum sea temperature | 48°F | ||
| Maximum sea temperature | 54°F | ||
| Average outside temperature | 47°F | ||
| Maximum outside temperature | 50°F | ||
| Minimum outside temperature | 45°F | ||
| Wind speed | 9.9mph | ||
| Wind temperature | 40°F | ||
| Precipitation | 7.3in | ||
| Number of days of rain | 11 jour(s) (36%) | ||
| Humidity | 87% | ||
| Visibility in kilometers | 8.67km | ||
| Cloud cover | 63% | ||
| Our opinion | freezing swimming |
Chart of the tides in september 2025
Tide times in september 2025 in Tromso
Swim elsewhere in Lapland in september
| City | Average T° | Min. T° | Max. T° | Our opinion | Alta in september | 50°F | 53°F | freezing swimming | Kemi in september | 56°F | 61°F | freezing swimming | Lulea in september | 54°F | 59°F | freezing swimming | Kirkenes in september | 49°F | 52°F | freezing swimming |