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In December warmest sea in Finland is usually observed in the following locations: Espoo, Vantaa, Helsinki.
Table below shows the average sea water temperature for marine resorts of Finland in December for the last three years.
| Place name | December 2024 | December 2023 | December 2022 |
|---|---|---|---|
| Espoo | 38.5°F | 36.2°F | 37.5°F |
| Vantaa | 38.2°F | 36.1°F | 37.1°F |
| Helsinki | 38.2°F | 36.1°F | 37.2°F |
| Kotka | 38.1°F | 35.5°F | 35.9°F |
| Imatra | 37.0°F | 37.2°F | 37.2°F |
| Turku | 36.7°F | 35.2°F | 36.5°F |
| Koli National Park | 36.7°F | 37.6°F | 37.2°F |
| Porvoo | 36.5°F | 34.0°F | 35.7°F |
| Juvaskyla | 35.9°F | 37.0°F | 36.8°F |
| Savolinna | 35.6°F | 36.6°F | 36.5°F |
| Lappeenranta | 35.4°F | 34.0°F | 34.0°F |
| Lahti | 35.3°F | 35.2°F | 35.5°F |
| Pori | 35.2°F | 35.8°F | 38.5°F |
| Saariselka | 33.8°F | 33.7°F | 33.8°F |
| Vaasa | 32.5°F | 31.8°F | 33.1°F |
| Kemi | 31.7°F | 29.7°F | 31.5°F |
| Seinajoki | 31.6°F | 31.1°F | 32.5°F |
| Oulu | 30.9°F | 30.5°F | 30.7°F |
Charts below show average sea water temperature for Finland resorts with the warmest sea in December.
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
10
20
30
40
50
60
70
80
38.9
44.4
50.3
58.8
63.2
61.7
55.1
44.8
36.1
32.5
32.2
34.3
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
10
20
30
40
50
60
70
80
38.5
44.1
50.3
58.8
63.1
61.7
54.9
44.7
36
32.4
32.1
34.1
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
10
20
30
40
50
60
70
80
38.7
44.2
50.3
58.8
63.1
61.8
55.1
44.9
36.1
32.4
32.1
34.1
You can also check other months of the year to see sea temperature of Finland resorts at that time.
Places in Finland:
Name
°F
