World Resorts Finland Porvoo Weather

Porvoo 7 Days Forecast

16.09
wed
Day
57°F
N 19 mph
Precip.
25%
Night
59°F
NE 24 mph
Precip.
40%
17.09
thu
Day
59°F
NE 23 mph
Precip.
30%
Night
55°F
E 12 mph
Precip.
36%
18.09
fri
Day
57°F
NE 25 mph
Precip.
52%
Night
57°F
NE 24 mph
Precip.
43%
19.09
sat
Day
57°F
NE 24 mph
Precip.
23%
Night
59°F
NE 26 mph
Precip.
31%
20.09
sun
Day
57°F
NE 23 mph
Precip.
25%
Night
55°F
NE 9 mph
Precip.
48%
21.09
mon
Day
54°F
S 12 mph
Precip.
22%
Night
55°F
W 16 mph
Precip.
23%
22.09
tue
Day
55°F
W 23 mph
Precip.
23%
Night
54°F
E 12 mph
Precip.
71%

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.

Air temperature in Porvoo, °F

Precipitation total in Porvoo, in.

* Charts above show average data for the last 3 years.

Best time for vacation in Porvoo

Sunniest months:
June 15 days
July 14 days
May 13 days
Warmest months:
July 66.1 °F
August 65.6 °F
June 59.8 °F
Warmest sea temp:
August 63.5 °F
July 63.0 °F
September 58.5 °F
Coldest months:
February 27.3 °F
January 27.5 °F
March 33.2 °F
Rainiest months:
August 4 days
October 4 days
September 4 days
Windiest months:
December 14.6 mph
October 14.3 mph
November 14.0 mph

Porvoo on a weather map

Current weather
20:31
Porvoo
+61°F
N 21 mph
Feels like: +61°F
Precip.: 25%
Places in Finland:
Name
°F
Vaasa
+57°F
Vantaa
+59°F
Imatra
+59°F
Kemi
+55°F
Kotka
+61°F
Lappeenranta
+59°F
Lahti
+55°F
Oulu
+54°F
Pori
+55°F
Saariselka
+45°F
Savolinna
+55°F
Turku
+55°F
Helsinki
+59°F
Espoo
+57°F
Juvaskyla
+55°F
all places
24 Hours Forecast
Porvoo
Local time: 20:31
September 16, wednesday
2100
61°F
N
21 mph
September 17, thursday
0000
59°F
NE
24 mph
0300
59°F
NE
17 mph
0600
59°F
NE
18 mph
0900
57°F
NE
21 mph
1200
59°F
NE
23 mph
1500
59°F
NE
24 mph
1800
57°F
NE
23 mph
Units of measurement: °C / °F