Average sea water temperature in April:
+32.5°F
| Minimum sea water temperature in April: | 37.6°F |
| Maximum sea water temperature in April: | 29.7°F |
Daily sea water temperature in April, °F
Show year:
2025
2024
2023
The average sea water temperature in April of 2025 was 32.1°F. The highest and lowest sea temperatures during the month were 32.4°F and 32.0°F.
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| Koli National Park |
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Monthly sea water temperature in Koli National Park, °F
Which Finland resorts have warmest sea in April?
| Place name | April 2025 | April 2024 |
|---|---|---|
| Pori | 39.9°F | 35.2°F |
| Espoo | 39.7°F | 35.0°F |
| Helsinki | 39.3°F | 34.8°F |
| Vantaa | 39.1°F | 34.8°F |
| Turku | 39.0°F | 34.6°F |
| Porvoo | 38.0°F | 34.7°F |
| Kotka | 37.8°F | 34.8°F |
| Vaasa | 36.9°F | 32.4°F |
| Lahti | 36.3°F | 35.1°F |
| Seinajoki | 35.8°F | 31.0°F |
| Lappeenranta | 35.5°F | 33.8°F |
| Savolinna | 34.3°F | 33.1°F |
| Imatra | 33.6°F | 32.4°F |
| Juvaskyla | 32.9°F | 32.6°F |
| Saariselka | 32.7°F | 32.7°F |
| Koli National Park | 32.1°F | 32.1°F |
| Oulu | 32.0°F | 29.9°F |
| Kemi | 31.8°F | 29.8°F |
Best time for vacation in Koli National Park
Koli National Park on a weather map
Places in Finland:
Name
°F
24 Hours Forecast
Koli National Park
Local time: 21:14
January 16, friday
0000
16°F
N
8 mph
8 mph
0300
16°F
N
9 mph
9 mph
0600
14°F
N
8 mph
8 mph
0900
16°F
N
8 mph
8 mph
1200
19°F
N
9 mph
9 mph
1500
23°F
N
9 mph
9 mph
1800
23°F
N
12 mph
12 mph
2100
25°F
N
12 mph
12 mph
