Current sea water temperature:
+66.7°F
| Minimum sea water temperature in July: | 76.5°F |
| Maximum sea water temperature in July: | 53.4°F |
| Average sea water temperature in July: | 63.3°F |
| more information | |
14 days
forecast
forecast
| Kotka |
monthly
weather
weather
| Kotka |
Sea water temperature for the last 10 days:
| July 16 | 66.7°F | July 11 | 65.3°F |
| July 15 | 66.2°F | July 10 | 63.3°F |
| July 14 | 65.7°F | July 9 | 62.1°F |
| July 13 | 67.8°F | July 8 | 62.8°F |
| July 12 | 64.8°F | July 7 | 63.3°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:
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.
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
July
July
| Kotka |
Best time for vacation in Kotka
Kotka on a weather map
Places in Finland:
Name
°F
24 Hours Forecast
Kotka
Local time: 20:49
July 16, thursday
2100
63°F
NE
6 mph
6 mph
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
