Current sea water temperature:
+37.9°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: | 32.6°F |
| more information | |
14 days
forecast
forecast
| Kotka |
monthly
weather
weather
| Kotka |
Sea water temperature for the last 10 days:
| January 1 | 37.9°F | December 27 | 38.5°F |
| December 31 | 38.3°F | December 26 | 38.1°F |
| December 30 | 38.1°F | December 25 | 38.1°F |
| December 29 | 38.7°F | December 24 | 38.5°F |
| December 28 | 37.8°F | December 23 | 38.7°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: 07:15
January 02, friday
0900
25°F
NW
24 mph
24 mph
1200
25°F
NW
23 mph
23 mph
1500
25°F
NW
23 mph
23 mph
1800
25°F
NW
22 mph
22 mph
2100
25°F
W
22 mph
22 mph
January 03, saturday
0000
25°F
W
22 mph
22 mph
0300
23°F
W
21 mph
21 mph
0600
23°F
W
19 mph
19 mph
