Weather in September 2025

Southern Finland weather in September 2025

The temperatures in Southern 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 Southern 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 Southern Finland in September 2025.

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

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

Southern 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
Temperatures in Southern Finland in September
Rain in Southern Finland in September

Recommended Hotels in Southern Finland

We know that finding the ideal hotel in Southern Finland can be a hard task...

That’s why we run our special tools and found the best hotels in Southern Finland. Click on hotel for more details.

Weather in Southern Finland in September - FAQ

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

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More about the weather in Southern Finland