Average sea water temperature in May:
+39.3°F
| Minimum sea water temperature in May: | 57.2°F |
| Maximum sea water temperature in May: | 29.8°F |
Daily sea water temperature in May, °F
Show year:
2025
2024
2023
The average sea water temperature in May of 2025 was 39.1°F. The highest and lowest sea temperatures during the month were 51.3°F and 31.3°F.
Monthly sea water temperature in Oulu, °F
Which Finland resorts have warmest sea in May?
| Place name | May 2025 | May 2024 |
|---|---|---|
| Lahti | 47.5°F | 49.8°F |
| Vaasa | 47.1°F | 45.3°F |
| Porvoo | 47.1°F | 48.2°F |
| Pori | 46.9°F | 44.8°F |
| Lappeenranta | 46.3°F | 50.3°F |
| Helsinki | 46.3°F | 46.4°F |
| Espoo | 46.2°F | 46.8°F |
| Vantaa | 46.0°F | 46.4°F |
| Turku | 45.7°F | 48.4°F |
| Kotka | 45.7°F | 48.1°F |
| Seinajoki | 45.2°F | 43.4°F |
| Juvaskyla | 43.8°F | 45.6°F |
| Savolinna | 43.1°F | 42.4°F |
| Imatra | 43.1°F | 45.3°F |
| Oulu | 39.1°F | 40.6°F |
| Koli National Park | 39.1°F | 40.8°F |
| Saariselka | 38.1°F | 38.1°F |
| Kemi | 37.6°F | 35.1°F |
Best time for vacation in Oulu
Oulu on a weather map
Places in Finland:
Name
°F
24 Hours Forecast
Oulu
Local time: 00:44
December 18, thursday
0300
32°F
S
6 mph
6 mph
0600
34°F
E
1 mph
1 mph
0900
34°F
NE
4 mph
4 mph
1200
32°F
N
6 mph
6 mph
1500
30°F
NW
9 mph
9 mph
1800
32°F
NW
14 mph
14 mph
2100
34°F
N
14 mph
14 mph
December 19, friday
0000
34°F
N
16 mph
16 mph
