Average sea water temperature in August:
+64.3°F
| Minimum sea water temperature in August: | 75.9°F |
| Maximum sea water temperature in August: | 59.2°F |
Daily sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 65.4°F. The highest and lowest sea temperatures during the month were 75.9°F and 59.4°F.
Monthly sea water temperature in Kotka, °F
Which Finland resorts have warmest sea in August?
| Place name | August 2025 | August 2024 |
|---|---|---|
| Lappeenranta | 67.9°F | 68.4°F |
| Juvaskyla | 67.7°F | 67.3°F |
| Savolinna | 67.4°F | 68.2°F |
| Lahti | 67.2°F | 67.4°F |
| Imatra | 67.2°F | 67.6°F |
| Koli National Park | 66.6°F | 66.2°F |
| Turku | 66.0°F | 65.2°F |
| Kemi | 65.6°F | 64.5°F |
| Kotka | 65.4°F | 67.4°F |
| Pori | 65.2°F | 66.0°F |
| Oulu | 65.1°F | 63.3°F |
| Porvoo | 64.7°F | 65.5°F |
| Vaasa | 64.5°F | 64.6°F |
| Espoo | 63.9°F | 65.0°F |
| Helsinki | 63.8°F | 65.3°F |
| Vantaa | 63.6°F | 65.3°F |
| Seinajoki | 63.4°F | 63.7°F |
| Saariselka | 62.4°F | 60.2°F |
Best time for vacation in Kotka
Kotka on a weather map
Places in Finland:
Name
°F
24 Hours Forecast
Kotka
Local time: 08:08
January 05, monday
0900
9°F
S
11 mph
11 mph
1200
12°F
S
7 mph
7 mph
1500
12°F
SE
6 mph
6 mph
1800
12°F
E
6 mph
6 mph
2100
14°F
E
7 mph
7 mph
January 06, tuesday
0000
18°F
E
7 mph
7 mph
0300
16°F
SE
4 mph
4 mph
0600
16°F
SW
2 mph
2 mph
