Current sea water temperature:
+56.8°F
| Minimum sea water temperature in September: | 66.7°F |
| Maximum sea water temperature in September: | 50.4°F |
| Average sea water temperature in September: | 58.5°F |
| more information | |
14 days
forecast
forecast
| Porvoo |
monthly
weather
weather
| Porvoo |
Sea water temperature for the last 10 days:
| September 16 | 56.8°F | September 11 | 58.6°F |
| September 15 | 57.0°F | September 10 | 59.4°F |
| September 14 | 56.3°F | September 9 | 59.7°F |
| September 13 | 58.5°F | September 8 | 59.9°F |
| September 12 | 58.6°F | September 7 | 59.7°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:
2026
2025
2024
The average sea water temperature in August of 2026 was 61.1°F. The highest and lowest sea temperatures during the month were 66.4°F and 56.3°F.
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 63.9°F. The highest and lowest sea temperatures during the month were 66.9°F and 61.3°F.
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 58.7°F. The highest and lowest sea temperatures during the month were 60.3°F and 56.3°F.
current
weather
weather
| Porvoo |
weather in
September
September
| Porvoo |
Best time for vacation in Porvoo
Porvoo on a weather map
Places in Finland:
Name
°F
24 Hours Forecast
Porvoo
Local time: 20:30
September 16, wednesday
2100
61°F
N
21 mph
21 mph
September 17, thursday
0000
59°F
NE
24 mph
24 mph
0300
59°F
NE
17 mph
17 mph
0600
59°F
NE
18 mph
18 mph
0900
57°F
NE
21 mph
21 mph
1200
59°F
NE
23 mph
23 mph
1500
59°F
NE
24 mph
24 mph
1800
57°F
NE
23 mph
23 mph
