Swimming in Norway in september 2025 Sea temperature by city in september
Do you want to go to the beach in Norway in september 2025? Is it the right month to go for pleasant temperatures and staying in the water for a long time? The answer is on this page with the sea temperatures in september in Norway by city and our opinion on the chances of enjoying pleasant sea conditions.
Sea temperature in Norway in september 2025
Here, find the average sea temperature in Norway in september in several coastal cities.
East in september
60°F
min: 56°F / max: 65°F
61°F
min: 57°F / max: 65°F
Drammen
60°F
min: 56°F / max: 64°F
Drobak
60°F
min: 56°F / max: 64°F
Fredrikstad
61°F
min: 56°F / max: 66°F
Horten
61°F
min: 56°F / max: 65°F
West (Vestlandet) in september
59°F
min: 54°F / max: 64°F
59°F
min: 55°F / max: 65°F
57°F
min: 52°F / max: 62°F
Skudeneshavn
59°F
min: 55°F / max: 64°F
Vagsoy Island
58°F
min: 52°F / max: 63°F
Akrehamn
59°F
min: 54°F / max: 64°F
North in september
52°F
min: 49°F / max: 55°F
53°F
min: 50°F / max: 56°F
52°F
min: 49°F / max: 56°F
Hamn (Senja Island)
51°F
min: 49°F / max: 54°F
Vega islands
55°F
min: 51°F / max: 58°F
Andenes
52°F
min: 49°F / max: 54°F
Central (Trøndelag) in september
56°F
min: 53°F / max: 61°F
55°F
min: 51°F / max: 59°F
56°F
min: 52°F / max: 60°F
Brekstad
56°F
min: 52°F / max: 61°F
Levanger
56°F
min: 52°F / max: 60°F
Namsos
56°F
min: 52°F / max: 60°F
South in september
60°F
min: 56°F / max: 65°F
61°F
min: 56°F / max: 65°F
Hidra island (Hidrasund)
60°F
min: 55°F / max: 65°F
Arendal
61°F
min: 57°F / max: 66°F
Farsund
60°F
min: 56°F / max: 65°F
Grimstad
61°F
min: 57°F / max: 66°F
Where should you go swimming in Norway in the month of september?
Swimming in Norway in september is cold (in the best case scenario)
In september in Norway swimming conditions vary by city. Details below:
Swimming in september in Oslo, Stavanger, Flekkefjord, Kristiansand, Sandefjord, Hidra island (Hidrasund), Arendal, Bryne, Drammen, Drobak, Egersund, Farsund, Fredrikstad, Grimstad, Horten, Jorpeland, Kragero, Larvik, Lillesand, Mandal, Moss, Porsgrunn, Risør, Sandnes, Søgne, Tønsberg and Vigrestad is possible... with a wetsuit! Indeed, the water is cold at this time of year with an average temperature of 60°F (min: 56°F/max: 65°F).
Forget about swimming in Bergen, Lofoten, Trondheim, Ålesund, Bodø, Narvik, Rorvik, Steinkjer, Hamn (Senja Island), Skudeneshavn, Vagsoy Island, Vega islands, Akrehamn, Andenes, Aure, Brattvag, Brekstad, Bronnoysund, Finnsnes, Floro, Forde, Hardbakke, Harstad, Haugesund, Kristiansund, Leirvik, Levanger, Maloy, Molde, Namsos, Nordfjordeid, Odda, Olen, Ornes, Rost, Sandnessjøen, Sistranda, Sortland, Steinsdalen, Stokmarknes, Storebo, Straume, Sunndalsora, Svolvær and Ulsteinvik in september! The water temperature is freezing, reaching as low as 54°F (and only 64°F at the best of times). Our advice: plan on sightseeing, and don't bring your beach towel!
Where to go swimming in Norway in september: the map of sea temperatures
ideal swimming 
pleasant swimming 
cool swimming 
cold swimming 
freezing swimmingWater temperature and seasonal norms in september
Oslo
| 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 | ||
| Precipitation | 5in | ||
| Number of days of precipitation | 7 jour(s) (22%) | ||
| Cloud cover | 50% | ||
| Our opinion | cold swimming |
More information on swimming in Oslo in september
Bergen
| September | |||
| Average sea temperature | 59°F | ||
| Minimum sea temperature | 54°F | ||
| Maximum sea temperature | 64°F | ||
| Average outside temperature | 56°F | ||
| Maximum outside temperature | 59°F | ||
| Minimum outside temperature | 54°F | ||
| Precipitation | 14.2in | ||
| Number of days of precipitation | 15 jour(s) (50%) | ||
| Cloud cover | 58% | ||
| Our opinion | freezing swimming |
More information on swimming in Bergen in september
Lofoten
| September | |||
| Average sea temperature | 52°F | ||
| Minimum sea temperature | 49°F | ||
| Maximum sea temperature | 55°F | ||
| Average outside temperature | 52°F | ||
| Maximum outside temperature | 54°F | ||
| Minimum outside temperature | 52°F | ||
| Precipitation | 4.2in | ||
| Number of days of precipitation | 7 jour(s) (25%) | ||
| Cloud cover | 59% | ||
| Our opinion | freezing swimming |
More information on swimming in Lofoten in september
Stavanger
| September | |||
| Average sea temperature | 59°F | ||
| Minimum sea temperature | 55°F | ||
| Maximum sea temperature | 65°F | ||
| Average outside temperature | 58°F | ||
| Maximum outside temperature | 59°F | ||
| Minimum outside temperature | 56°F | ||
| Precipitation | 9.4in | ||
| Number of days of precipitation | 12 jour(s) (42%) | ||
| Cloud cover | 52% | ||
| Our opinion | cold swimming |
More information on swimming in Stavanger in september
Trondheim
| September | |||
| Average sea temperature | 56°F | ||
| Minimum sea temperature | 53°F | ||
| Maximum sea temperature | 61°F | ||
| Average outside temperature | 54°F | ||
| Maximum outside temperature | 59°F | ||
| Minimum outside temperature | 49°F | ||
| Precipitation | 4.8in | ||
| Number of days of precipitation | 8 jour(s) (25%) | ||
| Cloud cover | 54% | ||
| Our opinion | freezing swimming |
More information on swimming in Trondheim in september
List of coastal cities in Norway
| Oslo in september | cold swimming |
| Bergen in september | freezing swimming |
| Lofoten in september | freezing swimming |
| Stavanger in september | cold swimming |
| Trondheim in september | freezing swimming |
| Ålesund in september | freezing swimming |
| Bodø in september | freezing swimming |
| Flekkefjord in september | cold swimming |
| Kristiansand in september | cold swimming |
| Narvik in september | freezing swimming |
| Rorvik in september | freezing swimming |
| Sandefjord in september | cold swimming |
| Steinkjer in september | freezing swimming |
| Hamn (Senja Island) in september | freezing swimming |
| Hidra island (Hidrasund) in september | cold swimming |
| Skudeneshavn in september | freezing swimming |
| Vagsoy Island in september | freezing swimming |
| Vega islands in september | freezing swimming |
| Akrehamn in september | freezing swimming |
| Andenes in september | freezing swimming |
| Arendal in september | cold swimming |
| Aure in september | freezing swimming |
| Brattvag in september | freezing swimming |
| Brekstad in september | freezing swimming |
| Bronnoysund in september | freezing swimming |
| Bryne in september | cold swimming |
| Drammen in september | cold swimming |
| Drobak in september | cold swimming |
| Egersund in september | cold swimming |
| Farsund in september | cold swimming |
| Finnsnes in september | freezing swimming |
| Floro in september | freezing swimming |
| Forde in september | freezing swimming |
| Fredrikstad in september | cold swimming |
| Grimstad in september | cold swimming |
| Hardbakke in september | freezing swimming |
| Harstad in september | freezing swimming |
| Haugesund in september | freezing swimming |
| Horten in september | cold swimming |
| Jorpeland in september | cold swimming |
| Kragero in september | cold swimming |
| Kristiansund in september | freezing swimming |
| Larvik in september | cold swimming |
| Leirvik in september | freezing swimming |
| Levanger in september | freezing swimming |
| Lillesand in september | cold swimming |
| Maloy in september | freezing swimming |
| Mandal in september | cold swimming |
| Molde in september | freezing swimming |
| Moss in september | cold swimming |
| Namsos in september | freezing swimming |
| Nordfjordeid in september | freezing swimming |
| Odda in september | freezing swimming |
| Olen in september | freezing swimming |
| Ornes in september | freezing swimming |
| Porsgrunn in september | cold swimming |
| Risør in september | cold swimming |
| Rost in september | freezing swimming |
| Sandnes in september | cold swimming |
| Sandnessjøen in september | freezing swimming |
| Sistranda in september | freezing swimming |
| Sortland in september | freezing swimming |
| Steinsdalen in september | freezing swimming |
| Stokmarknes in september | freezing swimming |
| Storebo in september | freezing swimming |
| Straume in september | freezing swimming |
| Sunndalsora in september | freezing swimming |
| Svolvær in september | freezing swimming |
| Søgne in september | cold swimming |
| Tønsberg in september | cold swimming |
| Ulsteinvik in september | freezing swimming |
| Vigrestad in september | cold swimming |