Average sea water temperature in August:
+61.9°F
| Minimum sea water temperature in August: | 71.2°F |
| Maximum sea water temperature in August: | 46.6°F |
Daily sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 60.5°F. The highest and lowest sea temperatures during the month were 62.2°F and 58.1°F.
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Monthly sea water temperature in Seinajoki, °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 Seinajoki
Seinajoki on a weather map
Places in Finland:
Name
°F
24 Hours Forecast
Seinajoki
Local time: 17:03
August 27, thursday
1800
68°F
SW
1 mph
1 mph
2100
59°F
W
3 mph
3 mph
August 28, friday
0000
57°F
W
2 mph
2 mph
0300
55°F
NE
3 mph
3 mph
0600
54°F
NE
4 mph
4 mph
0900
57°F
N
4 mph
4 mph
1200
66°F
NE
6 mph
6 mph
1500
68°F
N
8 mph
8 mph
