Current sea water temperature:
+44.6°F
| Minimum sea water temperature in May: | 64.6°F |
| Maximum sea water temperature in May: | 36.1°F |
| Average sea water temperature in May: | 45.1°F |
| more information | |
14 days
forecast
forecast
| Kotka |
monthly
weather
weather
| Kotka |
Sea water temperature for the last 10 days:
| May 16 | 44.6°F | May 11 | 45.0°F |
| May 15 | 45.5°F | May 10 | 44.1°F |
| May 14 | 43.5°F | May 9 | 43.3°F |
| May 13 | 43.9°F | May 8 | 42.4°F |
| May 12 | 43.3°F | May 7 | 41.4°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
May
May
| Kotka |
Best time for vacation in Kotka
Kotka on a weather map
Places in Finland:
Name
°F
24 Hours Forecast
Kotka
Local time: 04:37
May 17, sunday
0600
45°F
NE
9 mph
9 mph
0900
46°F
NE
8 mph
8 mph
1200
48°F
NE
11 mph
11 mph
1500
48°F
NE
9 mph
9 mph
1800
48°F
NE
9 mph
9 mph
2100
46°F
NE
7 mph
7 mph
May 18, monday
0000
46°F
E
7 mph
7 mph
0300
45°F
SE
6 mph
6 mph
