Average sea water temperature in August:
+62.9°F
| Minimum sea water temperature in August: | 74.3°F |
| Maximum sea water temperature in August: | 55.0°F |
Daily sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 60.2°F. The highest and lowest sea temperatures during the month were 65.1°F and 56.3°F.
sea water
temperature
temperature
| Helsinki |
monthly
weather
weather
| Helsinki |
current
weather
weather
| Helsinki |
14 days
forecast
forecast
| Helsinki |
Monthly sea water temperature in Helsinki, °F
Which Finland resorts have warmest sea in August?
| Place name | August 2026 | August 2025 |
|---|---|---|
| Lappeenranta | 64.9°F | 67.9°F |
| Lahti | 64.7°F | 67.2°F |
| Savolinna | 64.1°F | 67.4°F |
| Juvaskyla | 63.9°F | 67.7°F |
| Imatra | 63.6°F | 67.2°F |
| Turku | 62.9°F | 66.0°F |
| Pori | 62.8°F | 65.2°F |
| Koli National Park | 62.7°F | 66.6°F |
| Vaasa | 61.9°F | 64.5°F |
| Kemi | 61.5°F | 65.6°F |
| Oulu | 61.3°F | 65.1°F |
| Kotka | 61.2°F | 65.4°F |
| Porvoo | 61.1°F | 64.7°F |
| Seinajoki | 60.5°F | 63.4°F |
| Helsinki | 60.2°F | 63.8°F |
| Espoo | 59.9°F | 63.9°F |
| Vantaa | 59.9°F | 63.6°F |
| Saariselka | 57.3°F | 62.4°F |
Best time for vacation in Helsinki
Helsinki on a weather map
Places in Finland:
Name
°F
24 Hours Forecast
Helsinki
Local time: 19:50
September 16, wednesday
2100
59°F
N
14 mph
14 mph
September 17, thursday
0000
57°F
NE
9 mph
9 mph
0300
55°F
NE
9 mph
9 mph
0600
55°F
NE
11 mph
11 mph
0900
55°F
NE
10 mph
10 mph
1200
59°F
NE
14 mph
14 mph
1500
59°F
NE
14 mph
14 mph
1800
57°F
E
11 mph
11 mph
