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Warmest sea in Finland in April

52 coastal locations in Finland ranked by their typical April sea temperature. Region-wide average in April: 2.3°C. The top of the list is where to find the warmest swimming this month.

Warmest in April

Länsi-Turunmaa

3.5°C April mean in Finland

Regional April average

2.3°C

across all 52 coastal locations in Finland

Vs annual mean

-5.7°C

below the year-round regional average

What the Finland sea feels like in April

Water at this temperature is freezing cold, can cause pain and takes your breath away. Unless you are very experienced and are under strict supervision, swimming in this water for more than a few minutes can be very dangerous. Be careful, stay safe, and enjoy the rush of endorphins and exhilaration from a brief cold water swim.

Finland monthly average 0.9°C to 17.3°C
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  • Warmest month August 17.3°C
  • Coldest month February 0.9°C
  • Annual mean 7.9°C
  • Months above 20°C 0 of 12

Where April fits in the year

April sits inside the regional pattern shown on the left. Pick a different month to see how the ranking shifts.

All twelve Finland month rankings:

Finland sea temperature map (live)

The map shows today's latest reading at every Finland location. The list below is based on the typical April mean, useful for trip planning weeks or months ahead.

Zoom in to see individual locations. Click a pin for water temperatures. View list →
°C -2 0 1 3 5 7 9 11 13 15 17 19 21 24 27 30 35

Top 50 warmest Finland locations in April

Sorted by the typical April mean built from a decade of daily readings at each location. Click any place for its 30-day chart, monthly profile, and full 10-year history.

# Location April mean
1 Länsi-Turunmaa Southwest Finland 3.5°C
2 Västanfjärd Southwest Finland 3.4°C
3 Hango Hango 3.4°C
4 Nagu 3.4°C
5 Särkisalo Southwest Finland 3.4°C
6 Aland Islands 3.4°C
7 Hanko 3.4°C
8 Inio 3.4°C
9 Velkua 3.4°C
10 Merimasku 3.4°C
11 Rymattyla 3.4°C
12 Laensi Turunmaa 3.3°C
13 Naantali 3.3°C
14 Pargas 3.3°C
15 Turku 3.3°C
16 Houtskar 3.3°C
17 Kustavi 3.3°C
18 Ekenaes 3.2°C
19 Ekenäs Uusimaa 3.2°C
20 Pohja 3.1°C
21 Mariehamn 3.1°C
22 Inga 3.0°C
23 Tampere 3.0°C
24 Espoo 3.0°C
25 Helsinki 3.0°C
Show 25 more ▸
26 Koukkuniemi 3.0°C
27 Otaniemi 3.0°C
28 Teekkarikylae 3.0°C
29 Porvoo 2.8°C
30 Perna 2.7°C
31 Kotka 2.5°C
32 Pyharanta 2.4°C
33 Rauma 2.4°C
34 Uusikaupunki 2.4°C
35 Hamina 2.4°C
36 Pori 2.3°C
37 Kaskinen 1.8°C
38 Kristinestad 1.5°C
39 Imatra 1.5°C
40 lake Saimaa 1.5°C
41 Vaasa 0.8°C
42 Oravais 0.7°C
43 Kokkola 0.5°C
44 Himanka 0.3°C
45 Kalajoki 0.2°C
46 Pyhajoki 0.1°C
47 Raahe 0.1°C
48 Kemi -0.0°C
49 Keminmaa -0.0°C
50 Haukipudas -0.1°C

Coldest 10 in Finland in April

Same data the other way. Helpful if you want to know which Finland coasts to avoid for swimming in April.

# Location April mean
1 Kuivaniemi -0.1°C
2 Haukipudas -0.1°C
3 Oulu -0.1°C
4 Keminmaa -0.0°C
5 Kemi -0.0°C
6 Pyhajoki 0.1°C
7 Raahe 0.1°C
8 Kalajoki 0.2°C
9 Himanka 0.3°C
10 Kokkola 0.5°C

More on this region