15.04
wed
wed
Day
48°F
W 9 mph
Precip.
0%
0%
Night
41°F
SW 6 mph
Precip.
0%
0%
16.04
thu
thu
Day
43°F
SW 9 mph
Precip.
100%
100%
Night
45°F
SW 7 mph
Precip.
75%
75%
17.04
fri
fri
Day
50°F
SW 7 mph
Precip.
0%
0%
Night
41°F
S 1 mph
Precip.
0%
0%
18.04
sat
sat
Day
43°F
NW 7 mph
Precip.
0%
0%
Night
41°F
W 5 mph
Precip.
0%
0%
19.04
sun
sun
Day
41°F
W 12 mph
Precip.
0%
0%
Night
36°F
SW 6 mph
Precip.
0%
0%
20.04
mon
mon
Day
46°F
W 6 mph
Precip.
0%
0%
Night
39°F
SE 4 mph
Precip.
0%
0%
21.04
tue
tue
Day
52°F
SE 7 mph
Precip.
0%
0%
Night
43°F
E 12 mph
Precip.
0%
0%
22.04
wed
wed
Day
43°F
E 9 mph
Precip.
100%
100%
Night
36°F
SE 2 mph
Precip.
0%
0%
23.04
thu
thu
Day
39°F
W 10 mph
Precip.
66%
66%
Night
37°F
SW 14 mph
Precip.
100%
100%
24.04
fri
fri
Day
37°F
N 10 mph
Precip.
100%
100%
Night
37°F
E 11 mph
Precip.
0%
0%
25.04
sat
sat
Day
39°F
NE 10 mph
Precip.
0%
0%
Night
36°F
NW 8 mph
Precip.
0%
0%
26.04
sun
sun
Day
36°F
N 15 mph
Precip.
86%
86%
Night
36°F
NE 17 mph
Precip.
100%
100%
27.04
mon
mon
Day
41°F
NE 22 mph
Precip.
89%
89%
Night
37°F
N 12 mph
Precip.
0%
0%
28.04
tue
tue
Day
43°F
W 8 mph
Precip.
0%
0%
Night
37°F
S 3 mph
Precip.
100%
100%
sea water
temperature
temperature
| Helsinki |
monthly
weather
weather
| Helsinki |
current
weather
weather
| Helsinki |
7 days
forecast
forecast
| Helsinki |
Sea water temperature in April, °F
Show year:
2026
2025
2024
The average sea water temperature in April of 2026 was 35.0°F. The highest and lowest sea temperatures during the month were 38.7°F and 32.2°F.
Air temperature in Helsinki, °F
Precipitation total in Helsinki, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Helsinki
Helsinki on a weather map
Places in Finland:
Name
°F
24 Hours Forecast
Helsinki
Local time: 18:56
April 15, wednesday
2100
41°F
W
7 mph
7 mph
April 16, thursday
0000
41°F
SW
6 mph
6 mph
0300
41°F
S
7 mph
7 mph
0600
41°F
S
8 mph
8 mph
0900
43°F
SW
9 mph
9 mph
1200
43°F
SW
9 mph
9 mph
1500
45°F
SW
11 mph
11 mph
1800
45°F
SW
8 mph
8 mph
