World Resorts Finland Kotka Weather

Kotka 7 Days Forecast

15.09
tue
Day
54°F
NE 3 mph
Precip.
15%
Night
59°F
N 11 mph
Precip.
19%
16.09
wed
Day
59°F
N 18 mph
Precip.
24%
Night
59°F
N 22 mph
Precip.
40%
17.09
thu
Day
57°F
NE 27 mph
Precip.
40%
Night
54°F
E 15 mph
Precip.
7%
18.09
fri
Day
59°F
NE 19 mph
Precip.
37%
Night
57°F
NE 22 mph
Precip.
74%
19.09
sat
Day
57°F
NE 20 mph
Precip.
22%
Night
57°F
E 16 mph
Precip.
24%
20.09
sun
Day
59°F
NE 24 mph
Precip.
47%
Night
54°F
E 20 mph
Precip.
45%
21.09
mon
Day
54°F
SE 17 mph
Precip.
42%
Night
48°F
S 17 mph
Precip.
10%

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.

Air temperature in Kotka, °F

Precipitation total in Kotka, in.

* Charts above show average data for the last 3 years.

Best time for vacation in Kotka

Sunniest months:
July 15 days
June 14 days
May 13 days
Warmest months:
July 66.3 °F
August 65.4 °F
June 60.1 °F
Warmest sea temp:
August 64.2 °F
July 63.4 °F
September 59.4 °F
Coldest months:
February 26.4 °F
January 26.5 °F
March 32.7 °F
Rainiest months:
October 5 days
August 5 days
December 4 days
Windiest months:
December 14.7 mph
November 14.3 mph
October 13.9 mph

Kotka on a weather map

Current weather
04:48
Kotka
+50°F
SE 4 mph
Feels like: +48°F
Precip.: 19%
Places in Finland:
Name
°F
Vaasa
+48°F
Vantaa
+46°F
Imatra
+45°F
Kemi
+48°F
Kotka
+50°F
Lappeenranta
+45°F
Lahti
+45°F
Oulu
+43°F
Pori
+46°F
Saariselka
+43°F
Savolinna
+45°F
Turku
+48°F
Helsinki
+46°F
Espoo
+46°F
Juvaskyla
+43°F
all places
24 Hours Forecast
Kotka
Local time: 04:48
September 15, tuesday
0600
50°F
SE
4 mph
0900
52°F
SE
4 mph
1200
54°F
NE
3 mph
1500
55°F
N
7 mph
1800
57°F
NE
6 mph
2100
57°F
N
7 mph
September 16, wednesday
0000
59°F
N
11 mph
0300
57°F
NE
10 mph
Units of measurement: °C / °F