Measurements:
°C
°F
CURRENT WEATHER
00:31
Kotka
64°F
N 20 mph
Feels like: 64°F
Precip: 24%
World Resorts Finland Kotka Weather

7 Day Weather Forecast

09.09
wed
DAY
62°F
NE 17 mph
precip
41%
NIGHT
62°F
NW 14 mph
precip
47%
09.10
thu
DAY
60°F
NE 28 mph
precip
49%
NIGHT
56°F
NE 25 mph
precip
21%
09.11
fri
DAY
56°F
SE 18 mph
precip
29%
NIGHT
58°F
E 13 mph
precip
25%
09.12
sat
DAY
60°F
NE 24 mph
precip
30%
NIGHT
56°F
E 6 mph
precip
18%
09.13
sun
DAY
58°F
NW 8 mph
precip
21%
NIGHT
60°F
NE 2 mph
precip
30%
09.14
mon
DAY
60°F
NE 2 mph
precip
22%
NIGHT
58°F
S 4 mph
precip
52%
09.15
tue
DAY
58°F
N 2 mph
precip
25%
NIGHT
60°F
NW 14 mph
precip
54%

Kotka Sea Water Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Kotka was 16.3°F. The maximum and minimum values were 13.6°F and 18.4°F respectively.

Kotka on the Weather Map

Best Time to Visit Kotka
The most sunny months:
July 15 days
June 14 days
May 13 days
The most warm months:
July 68.1 °F
August 67.1 °F
June 61.2 °F
Warmest sea temperature:
August 65.7 °F
July 64.9 °F
September 60.5 °F
The most cold months:
February 23.8 °F
January 23.9 °F
March 30.8 °F
The most rainy months:
October 5 days
August 5 days
December 4 days
The most windy months:
December 14 mph
November 14 mph
October 14 mph
more details