Measurements:
°C
°F
Oslo
50°F
NE 2 mph
Feels like: 50°F
Precip: 42%
World Resorts Norway Oslo Weather

Oslo Sea Water Temperature

Current Sea Water Temperature:
+60.6°F
Maximum Sea Water Temperature in September: 67.0°F
Minimum Sea Water Temperature in September: 54.8°F
Average water temperature in September: 60.9°F

Sea Water Temperature for the Last 10 Days:

September 28 60.6°F September 23 59.8°F
September 27 60.2°F September 22 60.6°F
September 26 60.4°F September 21 60.4°F
September 25 59.4°F September 20 61.4°F
September 24 59.8°F September 19 61.6°F

When is the Warmest Sea for Oslo?

According to our data for the last three years for Oslo the highest average sea water temperature was in July, August and June.

Average Water Temperature by Month, °F

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Oslo was 68.6°F. The maximum and minimum values were 64.6°F and 74.4°F respectively.

Sea Water Temperature in August

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Oslo was 64.9°F. The maximum and minimum values were 63.0°F and 67.0°F respectively.

Sea Water Temperature in June

Select Year: 2026 2025 2024

The average sea surface temperature in June 2026 for Oslo was 62.3°F. The maximum and minimum values were 57.0°F and 70.0°F respectively.

Best Time to Visit Oslo
The most sunny months:
June 11 days
May 11 days
July 11 days
The most warm months:
July 70.7 °F
August 67.2 °F
June 66.5 °F
Warmest sea temperature:
July 67.5 °F
August 66.7 °F
June 61.5 °F
The most cold months:
January 21.9 °F
February 26.1 °F
December 26.7 °F
The most rainy months:
August 6 days
May 5 days
June 5 days
The most windy months:
May 6 mph
June 6 mph
April 6 mph

Oslo on the Weather Map

Norway Resorts:
NAME
F°
Ålesund +54
Bergen +50
Flam +34
Hemsedal +42
Holmenkollen +54
Lillehammer +50
Oslo +50
Stavanger +56
Tromse +46
Trondheim +52
24 Hours Weather Forecast
Oslo
Local time: 23:52
29 sep, tuesday
0000 50°F
NE
2 mph
0300 48°F
SE
2 mph
0600 46°F
S
4 mph
0900 50°F
S
3 mph
1200 58°F
SW
3 mph
1500 62°F
W
5 mph
1800 58°F
SW
4 mph
2100 50°F
SW
4 mph