Measurements:
°C
°F
Oslo
56°F
N 2 mph
Feels like: 58°F
Precip: 21%
World Resorts Norway Oslo Weather

Oslo Sea Water Temperature

Current Sea Water Temperature:
+68.4°F
Maximum Sea Water Temperature in July: 78.8°F
Minimum Sea Water Temperature in July: 59.6°F
Average water temperature in July: 67.5°F

Sea Water Temperature for the Last 10 Days:

July 24 68.4°F July 19 71.8°F
July 23 67.8°F July 18 74.4°F
July 22 69.2°F July 17 72.0°F
July 21 67.6°F July 16 72.8°F
July 20 69.2°F July 15 71.4°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 69.4°F. The maximum and minimum values were 66.6°F and 74.4°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 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 70.4 °F
August 67.1 °F
June 66.5 °F
Warmest sea temperature:
July 67.5 °F
August 66.8 °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
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 +56
Bergen +54
Flam +42
Hemsedal +48
Holmenkollen +54
Lillehammer +52
Oslo +56
Stavanger +58
Tromse +54
Trondheim +54
24 Hours Weather Forecast
Oslo
Local time: 08:17
25 jul, saturday
0900 56°F
N
2 mph
1200 60°F
N
6 mph
1500 60°F
N
11 mph
1800 58°F
N
12 mph
2100 56°F
N
10 mph
26 jul, sunday
0000 50°F
N
5 mph
0300 44°F
NE
5 mph
0600 42°F
NE
4 mph