Measurements:
°C
°F
CURRENT WEATHER
04:15
Kotka
56°F
NE 12 mph
Feels like: 54°F
Precip: 22%
World Resorts Finland Kotka Weather

7 Day Weather Forecast

09.29
tue
DAY
56°F
NE 12 mph
precip
35%
NIGHT
56°F
S 4 mph
precip
32%
09.30
wed
DAY
56°F
SW 7 mph
precip
4%
NIGHT
52°F
W 9 mph
precip
23%
10.01
thu
DAY
56°F
NW 9 mph
precip
17%
NIGHT
56°F
NE 4 mph
precip
9%
10.02
fri
DAY
58°F
NE 9 mph
precip
17%
NIGHT
56°F
NE 13 mph
precip
11%
10.03
sat
DAY
56°F
NE 15 mph
precip
26%
NIGHT
56°F
NE 14 mph
precip
26%
10.04
sun
DAY
56°F
NE 14 mph
precip
26%
NIGHT
54°F
NE 14 mph
precip
14%
10.05
mon
DAY
56°F
NE 14 mph
precip
10%
NIGHT
52°F
E 9 mph
precip
9%

Kotka Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Kotka was 15.5°F. The maximum and minimum values were 14.1°F and 17.0°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