Average sea water temperature in July:
+63.3°F
| Minimum sea water temperature in July: | 76.5°F |
| Maximum sea water temperature in July: | 53.4°F |
Daily sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 64.1°F. The highest and lowest sea temperatures during the month were 67.8°F and 62.1°F.
Monthly sea water temperature in Kotka, °F
Which Finland resorts have warmest sea in July?
| Place name | July 2026 | July 2025 |
|---|---|---|
| Lappeenranta | 66.2°F | 67.1°F |
| Oulu | 65.9°F | 67.6°F |
| Lahti | 65.8°F | 67.4°F |
| Vaasa | 65.2°F | 65.6°F |
| Imatra | 65.0°F | 66.6°F |
| Savolinna | 65.0°F | 66.8°F |
| Juvaskyla | 64.6°F | 66.2°F |
| Kemi | 64.5°F | 65.2°F |
| Turku | 64.5°F | 64.0°F |
| Kotka | 64.1°F | 64.6°F |
| Koli National Park | 64.0°F | 65.8°F |
| Seinajoki | 63.8°F | 65.1°F |
| Pori | 63.4°F | 65.0°F |
| Porvoo | 62.7°F | 64.6°F |
| Vantaa | 60.9°F | 62.8°F |
| Espoo | 60.9°F | 63.3°F |
| Helsinki | 60.8°F | 63.2°F |
| Saariselka | 56.7°F | 56.3°F |
Best time for vacation in Kotka
Kotka on a weather map
Places in Finland:
Name
°F
24 Hours Forecast
Kotka
Local time: 21:35
July 17, friday
0000
61°F
NE
5 mph
5 mph
0300
63°F
NE
6 mph
6 mph
0600
63°F
N
8 mph
8 mph
0900
63°F
N
9 mph
9 mph
1200
63°F
N
11 mph
11 mph
1500
64°F
N
9 mph
9 mph
1800
66°F
N
8 mph
8 mph
2100
66°F
N
9 mph
9 mph
