Weather in October
October brings a significant decrease in sea temperatures marking it at 10.3°C (50.5°F), reflecting the deepening autumn in
Porvoo. The daylight hours start to diminish significantly, but the city continues to bristle with activity. A popular event is the annual Halloween celebration known for its fun-packed programs and street parties. Autumn shades continue to decorate the city, creating picturesque photo opportunities for residents and visitors alike.
Sea temperature
In Porvoo,
Finland, the average seawater temperature in October is 10.3°C (50.5°F).
Note: Beware when you're in 10.3°C (50.5°F) waters; 13°C (55.4°F) is chilling and anything below 10°C (50°F) could cause breathing hindrance and a sudden cold shock, given your physical condition.
Daylight
The average length of the day in October in Porvoo is 10h and 6min.
On the first day of the month, sunrise is at 07:24 and sunset at 18:49 EEST. On the last day of October, in Porvoo, sunrise is at 07:39 and sunset at 16:21 EET.
Note: On Sunday, 27. October 2024, at 04:00, Daylight Saving Time ends, and the time zone changes from EEST to EET. Daylight Saving Time starts again on Sunday, 30.
March 2025, at 03:00; consequently, the time zone reverts from EET to EEST.