Average sea water temperature in April:
+36.4°F
| Minimum sea water temperature in April: | 45.9°F |
| Maximum sea water temperature in April: | 29.1°F |
Daily sea water temperature in April, °F
Show year:
2026
2025
2024
The average sea water temperature in April of 2026 was 37.3°F. The highest and lowest sea temperatures during the month were 42.1°F and 32.2°F.
sea water
temperature
temperature
| Helsinki |
monthly
weather
weather
| Helsinki |
current
weather
weather
| Helsinki |
14 days
forecast
forecast
| Helsinki |
Monthly sea water temperature in Helsinki, °F
Which Finland resorts have warmest sea in April?
| Place name | April 2026 | April 2025 |
|---|---|---|
| Seinajoki | 38.6°F | 35.8°F |
| Turku | 38.4°F | 39.0°F |
| Vaasa | 37.7°F | 36.9°F |
| Espoo | 37.6°F | 39.7°F |
| Vantaa | 37.5°F | 39.1°F |
| Helsinki | 37.3°F | 39.3°F |
| Kotka | 37.2°F | 37.8°F |
| Lahti | 36.8°F | 36.3°F |
| Oulu | 36.7°F | 32.0°F |
| Pori | 36.4°F | 39.9°F |
| Lappeenranta | 36.4°F | 35.5°F |
| Porvoo | 36.2°F | 38.0°F |
| Savolinna | 34.9°F | 34.3°F |
| Juvaskyla | 33.0°F | 32.9°F |
| Saariselka | 32.7°F | 32.7°F |
| Imatra | 32.6°F | 33.6°F |
| Kemi | 32.1°F | 31.8°F |
| Koli National Park | 32.1°F | 32.1°F |
Best time for vacation in Helsinki
Helsinki on a weather map
Places in Finland:
Name
°F
24 Hours Forecast
Helsinki
Local time: 07:27
June 28, sunday
0900
64°F
N
5 mph
5 mph
1200
68°F
N
7 mph
7 mph
1500
70°F
N
6 mph
6 mph
1800
70°F
N
7 mph
7 mph
2100
63°F
NE
11 mph
11 mph
June 29, monday
0000
63°F
NE
7 mph
7 mph
0300
63°F
NE
7 mph
7 mph
0600
63°F
E
7 mph
7 mph
