Measurements:
°C
°F
Porvoo
2°F
W 5 mph
Feels like: -8°F
Precip: 0%
World Resorts Finland Porvoo Weather

Porvoo Sea Water Temperature

Current Sea Water Temperature:
+26.4°F
Maximum Sea Water Temperature in February: 32.6°F
Minimum Sea Water Temperature in February: 26.4°F
Average water temperature in February: 28.8°F

Sea Water Temperature for the Last 10 Days:

February 17 26.4°F February 12 26.4°F
February 16 26.4°F February 11 26.4°F
February 15 26.4°F February 10 26.4°F
February 14 26.4°F February 09 26.4°F
February 13 26.4°F February 08 26.4°F

When is the Warmest Sea for Porvoo?

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

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Porvoo was 66.4°F. The maximum and minimum values were 59.2°F and 77.0°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Porvoo was 66.2°F. The maximum and minimum values were 56.2°F and 76.4°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Porvoo was 60.1°F. The maximum and minimum values were 52.6°F and 65.6°F respectively.

Best Time to Visit Porvoo
The most sunny months:
June 15 days
July 15 days
May 13 days
The most warm months:
July 68.0 °F
August 67.5 °F
June 61.0 °F
Warmest sea temperature:
August 65.2 °F
July 64.4 °F
September 59.5 °F
The most cold months:
January 25.0 °F
February 25.6 °F
March 31.2 °F
The most rainy months:
August 5 days
October 4 days
September 4 days
The most windy months:
December 14 mph
October 14 mph
November 14 mph

Porvoo on the Weather Map

Finland Resorts:
NAME
Espoo -2
Helsinki +2
Imatra -2
Juvaskyla 0
Kemi -2
Lahti -6
Lappeenranta -6
Oulu +16
Pori +8
Porvoo +2
Saariselka -20
Seinajoki +12
Turku +2
Vaasa +16
Vantaa -4
24 Hours Weather Forecast
Porvoo
Local time: 19:40
17 feb, tuesday
2100 2°F
W
5 mph
18 feb, wednesday
0000 2°F
NW
5 mph
0300 2°F
NW
6 mph
0600 2°F
NW
7 mph
0900 2°F
W
8 mph
1200 6°F
W
10 mph
1500 6°F
W
11 mph
1800 6°F
W
9 mph