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Coldest sea in Finland in December

52 coastal locations in Finland ranked by typical December sea temperature, coldest first. Region-wide average in December: 4.0°C.

Coldest in December

Haukipudas

0.4°C December mean in Finland

Regional December average

4.0°C

across all 52 coastal locations in Finland

Vs annual mean

-3.9°C

below the year-round regional average

What the Finland sea feels like in December

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 December fits in the year

December 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 December mean.

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 coldest Finland locations in December

Sorted by typical December mean from a decade of daily readings, coldest first. Click any place for the full location page.

# Location December mean
1 Haukipudas 0.4°C
2 Oulu 0.4°C
3 Kuivaniemi 0.4°C
4 Keminmaa 0.6°C
5 Kemi 0.8°C
6 Raahe 1.6°C
7 Pyhajoki 1.9°C
8 Vaasa 2.6°C
9 Kalajoki 2.6°C
10 Oravais 2.8°C
11 Himanka 2.9°C
12 Imatra 3.0°C
13 lake Saimaa 3.0°C
14 Kokkola 3.1°C
15 Kristinestad 3.9°C
16 Hamina 4.0°C
17 Pyharanta 4.1°C
18 Rauma 4.1°C
19 Uusikaupunki 4.1°C
20 Pori 4.1°C
21 Kaskinen 4.2°C
22 Kotka 4.3°C
23 Perna 4.5°C
24 Mariehamn 4.5°C
25 Porvoo 4.6°C
Show 25 more ▸
26 Tampere 4.7°C
27 Houtskar 4.7°C
28 Kustavi 4.7°C
29 Laensi Turunmaa 4.7°C
30 Länsi-Turunmaa Southwest Finland 4.8°C
31 Pargas 4.8°C
32 Turku 4.8°C
33 Naantali 4.9°C
34 Aland Islands 4.9°C
35 Helsinki 5.0°C
36 Koukkuniemi 5.0°C
37 Otaniemi 5.0°C
38 Teekkarikylae 5.0°C
39 Espoo 5.0°C
40 Inio 5.0°C
41 Velkua 5.0°C
42 Merimasku 5.0°C
43 Rymattyla 5.0°C
44 Inga 5.2°C
45 Pohja 5.2°C
46 Ekenäs Uusimaa 5.3°C
47 Västanfjärd Southwest Finland 5.4°C
48 Nagu 5.4°C
49 Hango Hango 5.4°C
50 Särkisalo Southwest Finland 5.4°C

Warmest 10 in Finland in December

Same data the other way. The warmest spots for the same month.

# Location December mean
1 Hanko 5.6°C
2 Ekenaes 5.5°C
3 Hango Hango 5.4°C
4 Särkisalo Southwest Finland 5.4°C
5 Nagu 5.4°C
6 Västanfjärd Southwest Finland 5.4°C
7 Ekenäs Uusimaa 5.3°C
8 Pohja 5.2°C
9 Inga 5.2°C
10 Merimasku 5.0°C

More on this region