Weather in September 2025

Finland weather in September 2025

°C °F

The average weather in Finland in September

The temperatures in Finland in September are usually low and can range between 12°C and 15°C.

You can expect about 3 to 8 days of rain in Finland during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.

Our weather forecast can give you a great sense of what weather to expect in Finland in September 2025.

If you’re planning to visit Finland in the near future, we highly recommend that you review the 14 day weather forecast for Finland before you arrive.

Temperatures
15° / 12°
Rainy Days
6
Snowy Days
0
Dry Days
24
Rainfall
91
mm
Sun Hours
9.0
Hrs

Explore the weather in Finland in other months

Finland annual weather

Month Temperatures Rainy Days Dry Days Snowy Days Rainfall Weather More details
January -2° / -5° 4 8 19 60 mm
Awful
February -2° / -5° 4 7 17 51 mm
Awful
March 1° / -3° 7 10 15 46 mm
Awful
April 5° / 2° 6 18 6 42 mm
Awful
May 11° / 7° 5 25 1 60 mm
Ok
June 16° / 12° 6 24 0 83 mm
Good
July 20° / 16° 6 25 0 106 mm
Good
August 19° / 15° 7 24 0 135 mm
Ok
September 15° / 12° 6 24 0 91 mm
Good
October 9° / 6° 8 20 3 90 mm
Awful
November 5° / 3° 7 18 5 76 mm
Awful
December 1° / -1° 7 11 14 72 mm
Awful

Weather in Finland in September - FAQ

What is the average temperature in Finland in September?
The average temperature in Finland in September is 12/15° C.
What is the chance of rain in Finland in September?
On average, there are 6 rainy days in Finland during September.
Weather wise, is September a good time to visit Finland?
The weather in Finland in September is good.
Can it snow in Finland in September?
On average, there are 0 snowy days in Finland in September.
Cities in Finland

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More about the weather in Finland