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Oslo sea water temperature

Current sea water temperature:
+41.2°F
Minimum sea water temperature in January: 42.8°F
Maximum sea water temperature in January: 28.8°F
Average sea water temperature in January: 36.2°F

Sea water temperature for the last 10 days:

January 13 41.2°F January 8 38.8°F
January 12 41.7°F January 7 39.2°F
January 11 42.3°F January 6 39.2°F
January 10 42.8°F January 5 39.6°F
January 9 40.1°F January 4 39.7°F

When is the warmest sea in Oslo?

Based on the data about daily sea water temperature for the last three years the warmest sea in Oslo was noticed in July, August and June.

Monthly Sea Temperatures in Oslo, °F

Sea water temperature in July, °F

Show year:
2025
2024
2023

The average sea water temperature in July of 2025 was 67.6°F. The highest and lowest sea temperatures during the month were 72.3°F and 62.4°F.

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 66.0°F. The highest and lowest sea temperatures during the month were 69.3°F and 63.1°F.

Sea water temperature in June, °F

Show year:
2025
2024
2023

The average sea water temperature in June of 2025 was 58.1°F. The highest and lowest sea temperatures during the month were 63.3°F and 54.0°F.

Best time for vacation in Oslo

Sunniest months:
June 11 days
May 11 days
July 11 days
Warmest months:
July 68.4 °F
August 65.4 °F
June 64.6 °F
Warmest sea temp:
July 65.7 °F
August 65.1 °F
June 60.3 °F
Coldest months:
January 25.0 °F
February 28.8 °F
December 29.0 °F
Rainiest months:
May 6 days
August 6 days
July 6 days
Windiest months:
May 6.4 mph
June 6.1 mph
April 6.0 mph

Oslo on a weather map

Oslo
+23°F
SW 4 mph
Feels like: +18°F
Precip.: 100%
Places in Norway:
Name
°F
+28°F
+18°F
+36°F
+23°F
+37°F
+5°F
+21°F
+7°F
+12°F
+23°F
24 Hours Forecast
Oslo
Local time: 11:51
January 13, tuesday
1200
23°F
SW
4 mph
1500
23°F
SW
4 mph
1800
23°F
SW
5 mph
2100
23°F
SW
5 mph
January 14, wednesday
0000
25°F
SW
5 mph
0300
25°F
SW
6 mph
0600
28°F
SW
6 mph
0900
30°F
SW
5 mph
Units of measurement: °C / °F