Current sea water temperature:
+35.4°F
| Minimum sea water temperature in December: | 42.1°F |
| Maximum sea water temperature in December: | 32.5°F |
| Average sea water temperature in December: | 36.7°F |
| more information | |
14 days
forecast
forecast
| Porvoo |
monthly
weather
weather
| Porvoo |
Sea water temperature for the last 10 days:
| December 28 | 35.4°F | December 23 | 36.5°F |
| December 27 | 35.4°F | December 22 | 36.3°F |
| December 26 | 36.0°F | December 21 | 37.8°F |
| December 25 | 36.9°F | December 20 | 37.0°F |
| December 24 | 36.5°F | December 19 | 37.0°F |
Monthly sea water temperature, °F
When is the warmest sea in Porvoo?
Based on the data about daily sea water temperature for the last three years the warmest sea in Porvoo was noticed in August, July and September.
Monthly Sea Temperatures in Porvoo, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 64.7°F. The highest and lowest sea temperatures during the month were 74.3°F and 58.3°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 64.6°F. The highest and lowest sea temperatures during the month were 73.8°F and 55.6°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 59.1°F. The highest and lowest sea temperatures during the month were 64.0°F and 52.3°F.
current
weather
weather
| Porvoo |
weather in
January
January
| Porvoo |
Best time for vacation in Porvoo
Porvoo on a weather map
Places in Finland:
Name
°F
24 Hours Forecast
Porvoo
Local time: 17:53
December 28, sunday
1800
28°F
SE
9 mph
9 mph
2100
32°F
E
9 mph
9 mph
December 29, monday
0000
32°F
E
10 mph
10 mph
0300
36°F
SE
16 mph
16 mph
0600
32°F
SE
17 mph
17 mph
0900
30°F
SE
17 mph
17 mph
1200
30°F
SE
20 mph
20 mph
1500
27°F
SE
19 mph
19 mph
