27.04
mon
mon
Day
41°F
S 21 mph
Precip.
0%
0%
Night
37°F
SE 21 mph
Precip.
0%
0%
28.04
tue
tue
Day
39°F
S 21 mph
Precip.
0%
0%
Night
37°F
SE 12 mph
Precip.
0%
0%
29.04
wed
wed
Day
41°F
SE 7 mph
Precip.
0%
0%
Night
37°F
SE 7 mph
Precip.
0%
0%
30.04
thu
thu
Day
43°F
E 5 mph
Precip.
0%
0%
Night
37°F
S 8 mph
Precip.
0%
0%
01.05
fri
fri
Day
46°F
SW 6 mph
Precip.
0%
0%
Night
41°F
SE 4 mph
Precip.
0%
0%
02.05
sat
sat
Day
43°F
NE 8 mph
Precip.
0%
0%
Night
41°F
N 6 mph
Precip.
0%
0%
03.05
sun
sun
Day
43°F
N 7 mph
Precip.
0%
0%
Night
41°F
N 3 mph
Precip.
0%
0%
04.05
mon
mon
Day
50°F
NE 4 mph
Precip.
0%
0%
Night
48°F
S 8 mph
Precip.
0%
0%
05.05
tue
tue
Day
46°F
W 16 mph
Precip.
60%
60%
Night
48°F
SW 10 mph
Precip.
0%
0%
06.05
wed
wed
Day
52°F
W 15 mph
Precip.
0%
0%
Night
50°F
W 7 mph
Precip.
0%
0%
07.05
thu
thu
Day
46°F
NW 7 mph
Precip.
0%
0%
Night
50°F
W 7 mph
Precip.
0%
0%
08.05
fri
fri
Day
46°F
NW 9 mph
Precip.
0%
0%
Night
48°F
SW 8 mph
Precip.
0%
0%
09.05
sat
sat
Day
45°F
NW 9 mph
Precip.
86%
86%
Night
45°F
W 7 mph
Precip.
0%
0%
10.05
sun
sun
Day
48°F
W 12 mph
Precip.
0%
0%
Night
45°F
W 9 mph
Precip.
0%
0%
Sea water temperature in April, °F
Show year:
2026
2025
2024
The average sea water temperature in April of 2026 was 37.0°F. The highest and lowest sea temperatures during the month were 41.0°F and 32.4°F.
Sea water temperature in May, °F
Show year:
2025
2024
2023
The average sea water temperature in May of 2025 was 45.7°F. The highest and lowest sea temperatures during the month were 52.7°F and 40.8°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
Kotka on a weather map
Places in Finland:
Name
°F
24 Hours Forecast
Kotka
Local time: 17:09
April 27, monday
1800
43°F
S
17 mph
17 mph
2100
39°F
S
19 mph
19 mph
April 28, tuesday
0000
37°F
SE
21 mph
21 mph
0300
36°F
S
21 mph
21 mph
0600
34°F
S
22 mph
22 mph
0900
36°F
S
22 mph
22 mph
1200
39°F
S
21 mph
21 mph
1500
41°F
S
18 mph
18 mph
