Measurements:
°C
°F
CURRENT WEATHER
11:14
Porvoo
58°F
SW 7 mph
Feels like: 58°F
Precip: 0%
World Resorts Finland Porvoo Weather

7 Day Weather Forecast

05.30
sat
DAY
58°F
SW 7 mph
precip
0%
NIGHT
52°F
W 9 mph
precip
100%
05.31
sun
DAY
48°F
W 10 mph
precip
0%
NIGHT
48°F
NE 3 mph
precip
0%
06.01
mon
DAY
52°F
NE 7 mph
precip
0%
NIGHT
50°F
NE 9 mph
precip
0%
06.02
tue
DAY
54°F
NW 8 mph
precip
0%
NIGHT
52°F
W 8 mph
precip
72%
06.03
wed
DAY
52°F
SW 9 mph
precip
62%
NIGHT
52°F
S 8 mph
precip
68%
06.04
thu
DAY
54°F
W 11 mph
precip
82%
NIGHT
52°F
W 14 mph
precip
0%
06.05
fri
DAY
54°F
W 13 mph
precip
0%
NIGHT
56°F
SW 6 mph
precip
0%

Porvoo Sea Water Temperature in May, °F

Select Year: 2026 2025 2024

The average sea surface temperature in May 2026 for Porvoo was 9.3°F. The maximum and minimum values were 4.1°F and 13.4°F respectively.

Porvoo on the Weather Map

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:
February 24.8 °F
January 25.0 °F
March 31.4 °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
more details