Measurements:
°C
°F
CURRENT WEATHER
10:31
Helsinki
56°F
S 5 mph
Feels like: 56°F
Precip: 0%
World Resorts Finland Helsinki Weather

7 Day Weather Forecast

05.30
sat
DAY
64°F
S 3 mph
precip
0%
NIGHT
54°F
SW 5 mph
precip
74%
05.31
sun
DAY
52°F
W 9 mph
precip
0%
NIGHT
46°F
E 2 mph
precip
0%
06.01
mon
DAY
60°F
N 7 mph
precip
0%
NIGHT
50°F
E 6 mph
precip
0%
06.02
tue
DAY
60°F
NW 7 mph
precip
0%
NIGHT
54°F
SW 6 mph
precip
100%
06.03
wed
DAY
58°F
W 9 mph
precip
100%
NIGHT
50°F
SW 6 mph
precip
0%
06.04
thu
DAY
58°F
W 9 mph
precip
100%
NIGHT
52°F
W 10 mph
precip
0%
06.05
fri
DAY
60°F
W 12 mph
precip
0%
NIGHT
56°F
S 4 mph
precip
0%

Helsinki Sea Water Temperature in May, °F

Select Year: 2026 2025 2024

The average sea surface temperature in May 2026 for Helsinki was 7.9°F. The maximum and minimum values were 5.3°F and 10.6°F respectively.

Helsinki on the Weather Map

Best Time to Visit Helsinki
The most sunny months:
June 15 days
July 15 days
May 14 days
The most warm months:
July 70.8 °F
August 69.0 °F
June 64.8 °F
Warmest sea temperature:
August 64.6 °F
July 63.2 °F
September 59.8 °F
The most cold months:
January 25.5 °F
February 26.1 °F
December 31.9 °F
The most rainy months:
August 5 days
July 4 days
October 4 days
The most windy months:
December 12 mph
November 12 mph
January 11 mph
more details