Measurements:
°C
°F
Oslo
74°F
E 9 mph
Feels like: 74°F
Precip: 1%
World Resorts Norway Oslo Weather

Oslo Sea Water Temperature

Current Sea Water Temperature:
+63.6°F
Maximum Sea Water Temperature in June: 73.2°F
Minimum Sea Water Temperature in June: 51.2°F
Average water temperature in June: 61.4°F

Sea Water Temperature for the Last 10 Days:

June 21 63.6°F June 16 59.6°F
June 20 64.4°F June 15 60.4°F
June 19 64.0°F June 14 59.4°F
June 18 63.0°F June 13 60.2°F
June 17 60.6°F June 12 60.8°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: 2025 2024 2023

The average sea surface temperature in July 2025 for Oslo was 69.6°F. The maximum and minimum values were 63.8°F and 74.8°F respectively.

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Oslo was 67.8°F. The maximum and minimum values were 64.6°F and 71.4°F respectively.

Sea Water Temperature in June

Select Year: 2026 2025 2024

The average sea surface temperature in June 2026 for Oslo was 60.3°F. The maximum and minimum values were 57.0°F and 64.4°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 70.4 °F
August 67.1 °F
June 66.3 °F
Warmest sea temperature:
July 67.4 °F
August 66.8 °F
June 61.4 °F
The most cold months:
January 21.9 °F
February 26.1 °F
December 26.7 °F
The most rainy months:
August 6 days
July 6 days
May 5 days
The most windy months:
May 6 mph
June 6 mph
April 6 mph

Oslo on the Weather Map

Norway Resorts:
NAME
Ålesund +54
Bergen +54
Flam +42
Hemsedal +50
Holmenkollen +70
Lillehammer +68
Oslo +74
Stavanger +56
Tromse +54
Trondheim +52
24 Hours Weather Forecast
Oslo
Local time: 13:09
21 jun, sunday
1500 78°F
E
8 mph
1800 78°F
E
7 mph
2100 62°F
SE
6 mph
22 jun, monday
0000 50°F
SE
4 mph
0300 46°F
SE
4 mph
0600 48°F
S
4 mph
0900 64°F
S
4 mph
1200 72°F
S
2 mph