Measurements:
°C
°F
Oslo
-8°F
S 3 mph
Feels like: -18°F
Precip: 0%
World Resorts Norway Oslo Weather

Oslo Sea Water Temperature

Current Sea Water Temperature:
+42.0°F
Maximum Sea Water Temperature in January: 42.0°F
Minimum Sea Water Temperature in January: 26.4°F
Average water temperature in January: 34.7°F

Sea Water Temperature for the Last 10 Days:

January 10 42.0°F January 05 38.4°F
January 09 39.0°F January 04 38.6°F
January 08 37.6°F January 03 39.2°F
January 07 38.0°F January 02 39.6°F
January 06 38.0°F January 01 40.0°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: 2025 2024 2023

The average sea surface temperature in June 2025 for Oslo was 59.0°F. The maximum and minimum values were 54.4°F and 64.8°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 61.5 °F
The most cold months:
January 22.3 °F
February 26.5 °F
December 26.7 °F
The most rainy months:
May 6 days
August 6 days
July 6 days
The most windy months:
May 6 mph
June 6 mph
April 6 mph

Oslo on the Weather Map

Norway Resorts:
NAME
Ålesund +30
Bergen +18
Flam -2
Hemsedal +2
Holmenkollen -8
Lillehammer -10
Oslo -8
Stavanger +26
Tromse 0
Trondheim +12
24 Hours Weather Forecast
Oslo
Local time: 21:32
11 jan, sunday
0000 -10°F
S
3 mph
0300 -12°F
S
3 mph
0600 -14°F
S
2 mph
0900 -14°F
S
2 mph
1200 0°F
E
1 mph
1500 0°F
SW
1 mph
1800 2°F
SW
1 mph
2100 6°F
W
1 mph