Porvoo Weather in September

What's the weather like in Porvoo (Southern Finland Province) in September 2021?

The climate in Porvoo during September can be summarized as mild and reasonably dry.

September is in the fall / autumn in Porvoo and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a cool 14°C (57°F), whilst at night 6°C (43°F) is normal.

Porvoo weather averages (imperial / metric)
Daytime temperature 14.1°C 57.3°F
Nightly temperature 6.2°C 43.1°F
Average temperature 10.1°C 50.2°F
Daily sunshine 4.5 hrs
Avg rainfall 73 mm 2.9 ins
Rainy days 16 days
Sea temperature 14.3°C 57.7°F
Humidity 85%
Windspeed 11.9kph 7 mph

On average September is the 3rd wettest month of the year in Porvoo with around 73mm 2.9 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 16 days, although this may vary considerably.

On the flip side this corresponds to an average of 4.5 hours of sunshine per day.

September temperatures in Porvoo

Porvoo average temperature in September

September rainfall

Porvoo average rain in September

September hourly sunshine

Porvoo average rain in September

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Porvoo in September 2021.

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Porvoo weather stats

Porvoo weather statistics
Hottest month: July 21.3°C 70.3°F
Driest month: February 34mm 1.3ins
Sunniest month: June 10.6hrs
Coldest month: January -4.6°C 23.7°F
Wettest month: August 80mm 3.1ins
Map showing location of Porvoo (60.39233, 25.66507)

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