Average sea water temperature in April:
+36.3°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 36.3°F. The highest and lowest sea temperatures during the month were 42.1°F and 32.2°F.
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| Helsinki |
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Monthly sea water temperature in Helsinki, °F
Which Finland resorts have warmest sea in April?
| Place name | April 2026 | April 2025 |
|---|---|---|
| Turku | 38.0°F | 39.0°F |
| Seinajoki | 36.8°F | 35.8°F |
| Espoo | 36.4°F | 39.7°F |
| Vaasa | 36.4°F | 36.9°F |
| Vantaa | 36.4°F | 39.1°F |
| Kotka | 36.4°F | 37.8°F |
| Helsinki | 36.3°F | 39.3°F |
| Porvoo | 35.6°F | 38.0°F |
| Pori | 35.5°F | 39.9°F |
| Lappeenranta | 35.5°F | 35.5°F |
| Oulu | 35.2°F | 32.0°F |
| Lahti | 35.1°F | 36.3°F |
| Savolinna | 34.0°F | 34.3°F |
| Juvaskyla | 32.5°F | 32.9°F |
| Imatra | 32.3°F | 33.6°F |
| Saariselka | 32.2°F | 32.7°F |
| Koli National Park | 32.0°F | 32.1°F |
| Kemi | 31.4°F | 31.8°F |
Best time for vacation in Helsinki
Helsinki on a weather map
Places in Finland:
Name
°F
24 Hours Forecast
Helsinki
Local time: 15:21
April 21, tuesday
1800
54°F
SE
6 mph
6 mph
2100
48°F
S
4 mph
4 mph
April 22, wednesday
0000
45°F
SE
5 mph
5 mph
0300
41°F
SE
7 mph
7 mph
0600
39°F
E
8 mph
8 mph
0900
45°F
E
12 mph
12 mph
1200
48°F
SE
14 mph
14 mph
1500
50°F
SE
12 mph
12 mph
