31.05
sun
sun
Day
52°F
NW 6 mph
Precip.
0%
0%
Night
46°F
W 2 mph
Precip.
0%
0%
01.06
mon
mon
Day
57°F
N 6 mph
Precip.
0%
0%
Night
50°F
NE 6 mph
Precip.
0%
0%
02.06
tue
tue
Day
54°F
NE 4 mph
Precip.
0%
0%
Night
54°F
SE 3 mph
Precip.
0%
0%
03.06
wed
wed
Day
61°F
NW 6 mph
Precip.
100%
100%
Night
57°F
NW 9 mph
Precip.
0%
0%
04.06
thu
thu
Day
55°F
W 13 mph
Precip.
0%
0%
Night
55°F
NW 7 mph
Precip.
0%
0%
05.06
fri
fri
Day
57°F
W 15 mph
Precip.
0%
0%
Night
54°F
SW 9 mph
Precip.
0%
0%
06.06
sat
sat
Day
61°F
W 12 mph
Precip.
0%
0%
Night
54°F
NW 1 mph
Precip.
0%
0%
07.06
sun
sun
Day
63°F
NE 9 mph
Precip.
0%
0%
Night
54°F
E 4 mph
Precip.
0%
0%
08.06
mon
mon
Day
64°F
NW 12 mph
Precip.
0%
0%
Night
57°F
W 6 mph
Precip.
0%
0%
09.06
tue
tue
Day
61°F
N 6 mph
Precip.
100%
100%
Night
55°F
S 2 mph
Precip.
100%
100%
10.06
wed
wed
Day
61°F
W 6 mph
Precip.
86%
86%
Night
57°F
SE 2 mph
Precip.
0%
0%
11.06
thu
thu
Day
68°F
NW 6 mph
Precip.
0%
0%
Night
55°F
E 6 mph
Precip.
0%
0%
12.06
fri
fri
Day
70°F
W 12 mph
Precip.
0%
0%
Night
70°F
SW 5 mph
Precip.
0%
0%
sea water
temperature
temperature
| Helsinki |
monthly
weather
weather
| Helsinki |
current
weather
weather
| Helsinki |
7 days
forecast
forecast
| Helsinki |
Sea water temperature in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 46.2°F. The highest and lowest sea temperatures during the month were 51.1°F and 41.5°F.
Sea water temperature in June, °F
Show year:
2025
2024
2023
The average sea water temperature in June of 2025 was 53.9°F. The highest and lowest sea temperatures during the month were 55.8°F and 51.8°F.
Air temperature in Helsinki, °F
Precipitation total in Helsinki, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Helsinki
Helsinki on a weather map
Places in Finland:
Name
°F
24 Hours Forecast
Helsinki
Local time: 00:12
May 31, sunday
0300
50°F
W
6 mph
6 mph
0600
50°F
W
6 mph
6 mph
0900
48°F
W
9 mph
9 mph
1200
52°F
NW
6 mph
6 mph
1500
52°F
W
6 mph
6 mph
1800
54°F
W
6 mph
6 mph
2100
50°F
NW
6 mph
6 mph
June 01, monday
0000
46°F
W
2 mph
2 mph
