Leaflet | Tiles © Esri
In September warmest sea in Finland is usually observed in the following locations: Lappeenranta, Kotka, Savolinna.
Table below shows the average sea water temperature for marine resorts of Finland in September for the last three years.
| Place name | September 2024 | September 2023 | September 2022 |
|---|---|---|---|
| Lappeenranta | 64.4°F | 62.0°F | 57.5°F |
| Kotka | 64.4°F | 62.6°F | 58.4°F |
| Savolinna | 62.9°F | 61.3°F | 60.8°F |
| Imatra | 62.4°F | 61.1°F | 59.6°F |
| Lahti | 62.4°F | 61.2°F | 62.4°F |
| Vantaa | 61.9°F | 61.9°F | 60.1°F |
| Porvoo | 61.9°F | 61.1°F | 59.6°F |
| Turku | 61.9°F | 61.3°F | 57.7°F |
| Espoo | 61.8°F | 61.8°F | 59.8°F |
| Helsinki | 61.7°F | 61.9°F | 60.0°F |
| Koli National Park | 61.5°F | 59.6°F | 59.1°F |
| Juvaskyla | 61.0°F | 60.1°F | 59.6°F |
| Pori | 60.1°F | 59.4°F | 54.6°F |
| Vaasa | 58.8°F | 58.5°F | 54.6°F |
| Kemi | 58.2°F | 56.5°F | 53.9°F |
| Seinajoki | 58.0°F | 56.6°F | 54.7°F |
| Oulu | 58.0°F | 56.7°F | 54.0°F |
| Saariselka | 54.0°F | 53.4°F | 51.2°F |
Charts below show average sea water temperature for Finland resorts with the warmest sea in September.
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
11
22
33
44
55
66
77
88
34.8
40.9
48.5
59.1
65.5
64.9
57.8
45.4
33.9
31
30.5
31.4
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
11
22
33
44
55
66
77
37.2
43.4
50.3
59.3
64.2
63.2
55.9
45.2
35.5
31.7
31.2
32.6
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
10
20
30
40
50
60
70
80
36.1
40.8
48.1
57.2
63.7
62.7
55
42.3
33.5
32.3
32.3
33.3
You can also check other months of the year to see sea temperature of Finland resorts at that time.
Places in Finland:
Name
°F
