Current sea water temperature:
+33.1°F
| Minimum sea water temperature in January: | 37.9°F |
| Maximum sea water temperature in January: | 28.8°F |
| Average sea water temperature in January: | 32.7°F |
| more information | |
14 days
forecast
forecast
| Kotka |
monthly
weather
weather
| Kotka |
Sea water temperature for the last 10 days:
| January 13 | 33.1°F | January 8 | 33.8°F |
| January 12 | 33.1°F | January 7 | 34.2°F |
| January 11 | 33.3°F | January 6 | 34.2°F |
| January 10 | 33.4°F | January 5 | 35.6°F |
| January 9 | 33.6°F | January 4 | 36.1°F |
Monthly sea water temperature, °F
When is the warmest sea in Kotka?
Based on the data about daily sea water temperature for the last three years the warmest sea in Kotka was noticed in August, July and September.
Monthly Sea Temperatures in Kotka, °F
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.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 64.6°F. The highest and lowest sea temperatures during the month were 76.1°F and 56.1°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 61.4°F. The highest and lowest sea temperatures during the month were 65.1°F and 56.5°F.
current
weather
weather
| Kotka |
weather in
January
January
| Kotka |
Best time for vacation in Kotka
Kotka on a weather map
Places in Finland:
Name
°F
24 Hours Forecast
Kotka
Local time: 00:50
January 14, wednesday
0300
14°F
W
9 mph
9 mph
0600
16°F
W
9 mph
9 mph
0900
19°F
W
7 mph
7 mph
1200
23°F
NW
6 mph
6 mph
1500
23°F
NW
11 mph
11 mph
1800
23°F
NW
14 mph
14 mph
2100
21°F
NW
15 mph
15 mph
January 15, thursday
0000
21°F
NW
14 mph
14 mph
