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Warmest sea in Finland

52 coastal locations in Finland ranked by their year-round average sea temperature. The regional average is 8.0°C. The top of the list shows where to find the warmest water in a typical year. The bottom shows the coldest year-round coasts of the region.

Warmest location

Hango

9.0°C annual mean in Finland

Regional average

8.0°C

across all 52 Finland coastal locations

Warmest month

August

17.3°C region-wide average

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

Month by month across Finland

Sea temperatures in Finland swing from 0.9°C in February to 17.3°C in August on average across every coast we track. That spread of 16°C hides much bigger swings at individual locations.

Want a specific month? Pick one for a dedicated ranking:

Finland sea temperature map

Today's pin colours show the latest daily reading at every Finland location we track. Pick any pin for the location's full page.

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 locations in Finland

The warmest coastal locations across all of Finland, sorted by year-round average. Click any place for its 30-day chart, monthly profile, and 10-year history.

# Location Annual mean
1 Hango Hango 9.0°C
2 Särkisalo Southwest Finland 9.0°C
3 Västanfjärd Southwest Finland 9.0°C
4 Hanko 8.9°C
5 Länsi-Turunmaa Southwest Finland 8.9°C
6 Ekenaes 8.9°C
7 Ekenäs Uusimaa 8.9°C
8 Nagu 8.7°C
9 Pohja 8.7°C
10 Inga 8.7°C
11 Pargas 8.6°C
12 Turku 8.6°C
13 Naantali 8.6°C
14 Espoo 8.6°C
15 Merimasku 8.6°C
16 Rymattyla 8.6°C
17 Helsinki 8.6°C
18 Koukkuniemi 8.6°C
19 Otaniemi 8.6°C
20 Teekkarikylae 8.6°C
21 Velkua 8.6°C
22 Inio 8.5°C
23 Laensi Turunmaa 8.5°C
24 Perna 8.4°C
25 Porvoo 8.4°C
Show 25 more ▸
26 Tampere 8.4°C
27 Kotka 8.4°C
28 Houtskar 8.4°C
29 Kustavi 8.4°C
30 Aland Islands 8.4°C
31 Hamina 8.3°C
32 Imatra 8.2°C
33 lake Saimaa 8.2°C
34 Mariehamn 8.1°C
35 Pyharanta 7.8°C
36 Rauma 7.8°C
37 Uusikaupunki 7.8°C
38 Pori 7.8°C
39 Kaskinen 7.5°C
40 Kristinestad 7.4°C
41 Vaasa 6.6°C
42 Oravais 6.5°C
43 Kokkola 6.3°C
44 Haukipudas 6.2°C
45 Oulu 6.2°C
46 Pyhajoki 6.2°C
47 Himanka 6.2°C
48 Kuivaniemi 6.2°C
49 Keminmaa 6.2°C
50 Raahe 6.2°C

Coldest 10 in Finland for contrast

Same data, sorted the other way. Useful if you want to know which Finland coasts stay coldest year-round.

# Location Annual mean
1 Kalajoki 6.2°C
2 Kemi 6.2°C
3 Keminmaa 6.2°C
4 Raahe 6.2°C
5 Himanka 6.2°C
6 Kuivaniemi 6.2°C
7 Haukipudas 6.2°C
8 Oulu 6.2°C
9 Pyhajoki 6.2°C
10 Kokkola 6.3°C

More on this region