Swimming in Oslo in september 2025: Average sea temperature in september and tide times in september 2025
Average sea temperature in Oslo in september 2025.
In september, according to seasonal norms, the sea temperature in Oslo is:
Minimum: 56°F
Average: 60°F
Maximum: 65°F
Other useful seasonal weather averages in september:
- Outside temperature: 47°F to 59°F
- Most common weather: "Clear/Sunny"
- The wind blows at 5mph
- It rains a total of 5in, over 7 day(s).
Should we swim in Oslo in september?
No... The water temperature in Oslo in september is cold
Swimming in Oslo in september is possible... with a wetsuit! Indeed, the water is cold at this time of year with an average sea temperature of 60°F (minimum: 56°F - maximum: 65°F).
Note also that in september, the climate is tolerable with an average outside temperature of 53°F, 5in of precipitation (over 7 days) and 88.02 % humidity.
Water and normal seasonal temperatures in Oslo in september
| September | |||
| Average sea temperature | 60°F | ||
| Minimum sea temperature | 56°F | ||
| Maximum sea temperature | 65°F | ||
| Average outside temperature | 54°F | ||
| Maximum outside temperature | 59°F | ||
| Minimum outside temperature | 49°F | ||
| Wind speed | 8.1mph | ||
| Wind temperature | 47°F | ||
| Precipitation | 5in | ||
| Number of days of rain | 7 jour(s) (22%) | ||
| Humidity | 89% | ||
| Visibility in kilometers | 8.26km | ||
| Cloud cover | 50% | ||
| Our opinion | cold swimming |
Chart of the tides in september 2025
Tide times in september 2025 in Oslo
Swim elsewhere in Norway in september
| City | Average T° | Min. T° | Max. T° | Our opinion | Bergen in september | 59°F | 64°F | freezing swimming | Lofoten in september | 52°F | 55°F | freezing swimming | Stavanger in september | 59°F | 65°F | cold swimming | Trondheim in september | 56°F | 61°F | freezing swimming | Ålesund in september | 57°F | 62°F | freezing swimming | Bodø in september | 53°F | 56°F | freezing swimming | Flekkefjord in september | 60°F | 65°F | cold swimming | Kristiansand in september | 61°F | 65°F | cold swimming | Narvik in september | 52°F | 56°F | freezing swimming | Rorvik in september | 55°F | 59°F | freezing swimming | Sandefjord in september | 61°F | 65°F | cold swimming | Steinkjer in september | 56°F | 60°F | freezing swimming |