Current sea water temperature:
+39.9°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: | 36.6°F |
| more information | |
14 days
forecast
forecast
| Porvoo |
monthly
weather
weather
| Porvoo |
Sea water temperature for the last 10 days:
| December 5 | 39.9°F | November 30 | 41.9°F |
| December 4 | 40.3°F | November 29 | 40.6°F |
| December 3 | 40.8°F | November 28 | 40.8°F |
| December 2 | 41.2°F | November 27 | 40.8°F |
| December 1 | 41.4°F | November 26 | 41.2°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
December
December
| Porvoo |
Best time for vacation in Porvoo
Porvoo on a weather map
Places in Finland:
Name
°F
24 Hours Forecast
Porvoo
Local time: 10:27
December 05, friday
1200
41°F
NE
7 mph
7 mph
1500
41°F
N
6 mph
6 mph
1800
41°F
N
6 mph
6 mph
2100
41°F
NW
7 mph
7 mph
December 06, saturday
0000
41°F
NW
8 mph
8 mph
0300
41°F
NW
10 mph
10 mph
0600
41°F
NW
11 mph
11 mph
0900
41°F
W
14 mph
14 mph
