Measurements:
°C
°F
Oulu
-2°F
S 5 mph
Feels like: -12°F
Precip: 0%
World Resorts Finland Oulu Weather

Oulu Sea Water Temperature

Current Sea Water Temperature:
+27.8°F
Maximum Sea Water Temperature in January: 34.4°F
Minimum Sea Water Temperature in January: 26.0°F
Average water temperature in January: 27.9°F

Sea Water Temperature for the Last 10 Days:

January 10 27.8°F January 05 31.8°F
January 09 28.2°F January 04 33.2°F
January 08 28.8°F January 03 34.4°F
January 07 29.4°F January 02 33.6°F
January 06 30.4°F January 01 32.2°F

When is the Warmest Sea for Oulu?

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

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 Oulu was 69.5°F. The maximum and minimum values were 58.6°F and 78.2°F respectively.

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Oulu was 66.7°F. The maximum and minimum values were 58.4°F and 78.2°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Oulu was 57.3°F. The maximum and minimum values were 50.0°F and 62.4°F respectively.

Best Time to Visit Oulu
The most sunny months:
July 13 days
June 11 days
May 10 days
The most warm months:
July 69.0 °F
August 65.6 °F
June 60.9 °F
Warmest sea temperature:
July 63.9 °F
August 63.4 °F
September 55.6 °F
The most cold months:
January 14.7 °F
February 18.2 °F
December 22.2 °F
The most rainy months:
August 5 days
July 4 days
June 4 days
The most windy months:
November 9 mph
October 9 mph
December 9 mph

Oulu on the Weather Map

Finland Resorts:
NAME
Espoo +14
Helsinki +16
Juvaskyla +8
Kemi -12
Koli National Park +12
Kotka +16
Lahti +12
Lappeenranta +14
Oulu -2
Pori +10
Saariselka -20
Savolinna +14
Turku +14
Vaasa +2
Vantaa +14
24 Hours Weather Forecast
Oulu
Local time: 22:26
11 jan, sunday
0000 -2°F
S
6 mph
0300 -4°F
S
5 mph
0600 -2°F
S
6 mph
0900 -2°F
S
6 mph
1200 0°F
S
6 mph
1500 2°F
S
6 mph
1800 2°F
S
5 mph
2100 2°F
S
3 mph