Average sea water temperature in August:
+63.0°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.
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Monthly sea water temperature in Helsinki, °F
Which Finland resorts have warmest sea in August?
| Place name | August 2026 | August 2025 |
|---|---|---|
| Lappeenranta | 65.2°F | 67.9°F |
| Lahti | 64.9°F | 67.2°F |
| Savolinna | 64.5°F | 67.4°F |
| Juvaskyla | 64.1°F | 67.7°F |
| Imatra | 63.9°F | 67.2°F |
| Turku | 63.0°F | 66.0°F |
| Koli National Park | 62.9°F | 66.6°F |
| Pori | 62.6°F | 65.2°F |
| Vaasa | 62.0°F | 64.5°F |
| Kemi | 61.8°F | 65.6°F |
| Porvoo | 61.4°F | 64.7°F |
| Oulu | 61.4°F | 65.1°F |
| Kotka | 61.2°F | 65.4°F |
| Seinajoki | 60.5°F | 63.4°F |
| Helsinki | 60.2°F | 63.8°F |
| Espoo | 60.0°F | 63.9°F |
| Vantaa | 59.8°F | 63.6°F |
| Saariselka | 57.5°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: 18:04
August 27, thursday
2100
61°F
NE
5 mph
5 mph
August 28, friday
0000
61°F
E
4 mph
4 mph
0300
59°F
E
3 mph
3 mph
0600
59°F
E
4 mph
4 mph
0900
61°F
E
2 mph
2 mph
1200
63°F
NE
2 mph
2 mph
1500
66°F
N
6 mph
6 mph
1800
64°F
N
5 mph
5 mph
