Average sea water temperature in August:
+64.1°F
| Minimum sea water temperature in August: | 75.9°F |
| Maximum sea water temperature in August: | 56.8°F |
Daily sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 61.2°F. The highest and lowest sea temperatures during the month were 66.7°F and 56.8°F.
Monthly sea water temperature in Kotka, °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 Kotka
Kotka on a weather map
Places in Finland:
Name
°F
24 Hours Forecast
Kotka
Local time: 05:02
September 15, tuesday
0600
50°F
SE
4 mph
4 mph
0900
52°F
SE
4 mph
4 mph
1200
54°F
NE
3 mph
3 mph
1500
55°F
N
7 mph
7 mph
1800
57°F
NE
6 mph
6 mph
2100
57°F
N
7 mph
7 mph
September 16, wednesday
0000
59°F
N
11 mph
11 mph
0300
57°F
NE
10 mph
10 mph
