Current sea water temperature:
+52.7°F
| Minimum sea water temperature in June: | 71.1°F |
| Maximum sea water temperature in June: | 45.0°F |
| Average sea water temperature in June: | 54.9°F |
| more information | |
14 days
forecast
forecast
| Helsinki |
monthly
weather
weather
| Helsinki |
Sea water temperature for the last 10 days:
| June 7 | 52.7°F | June 1 | 48.7°F |
| June 6 | 51.1°F | May 31 | 48.9°F |
| June 5 | 50.7°F | May 30 | 48.2°F |
| June 4 | 50.2°F | May 29 | 48.0°F |
| June 3 | 50.9°F | May 28 | 48.0°F |
Monthly sea water temperature, °F
When is the warmest sea in Helsinki?
Based on the data about daily sea water temperature for the last three years the warmest sea in Helsinki was noticed in August, July and September.
Monthly Sea Temperatures in Helsinki, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 63.8°F. The highest and lowest sea temperatures during the month were 73.9°F and 56.5°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 63.2°F. The highest and lowest sea temperatures during the month were 74.5°F and 54.0°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 59.5°F. The highest and lowest sea temperatures during the month were 63.3°F and 54.0°F.
current
weather
weather
| Helsinki |
weather in
June
June
| Helsinki |
Best time for vacation in Helsinki
Helsinki on a weather map
Places in Finland:
Name
°F
24 Hours Forecast
Helsinki
Local time: 00:33
June 08, monday
0300
50°F
SE
2 mph
2 mph
0600
54°F
SW
4 mph
4 mph
0900
59°F
W
4 mph
4 mph
1200
61°F
W
5 mph
5 mph
1500
64°F
NW
6 mph
6 mph
1800
64°F
W
7 mph
7 mph
2100
59°F
W
4 mph
4 mph
June 09, tuesday
0000
55°F
NW
4 mph
4 mph
