Weather in September 2025

Vaasa weather in September 2025

The temperatures in Vaasa in September are usually low and can range between 10°C and 14°C.

You can expect about 3 to 8 days of rain in Vaasa 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 Vaasa in September 2025.

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

Temperatures
Temperatures
14° / 10°
Rainy Days
Rainy Days
7
Snowy Days
Snowy Days
0
Dry Days
Dry Days
23
Rainfall
Rainfall
91
mm
8.7
Sun Hours
8.7
Hrs

Vaasa annual weather

Month Temperatures Rainy Days Dry Days Snowy Days Rainfall Weather More details
January -3° / -6° 5 7 20 67 mm
Awful
February -3° / -7° 5 5 19 62 mm
Awful
March 0° / -5° 6 8 17 61 mm
Awful
April 4° / 0° 6 16 9 63 mm
Awful
May 10° / 5° 7 22 2 84 mm
Awful
June 14° / 9° 6 24 0 92 mm
Good
July 18° / 13° 7 24 0 112 mm
Ok
August 18° / 13° 9 22 0 135 mm
Ok
September 14° / 10° 7 23 0 91 mm
Ok
October 7° / 5° 9 18 5 107 mm
Awful
November 4° / 2° 10 12 9 91 mm
Awful
December 0° / -3° 8 5 18 81 mm
Awful
Temperatures in Vaasa in September
Rain in Vaasa in September

Weather in Vaasa in September - FAQ

What is the average temperature in Vaasa in September?
The average temperature in Vaasa in September is 10/14° C.
What is the chance of rain in Vaasa in September?
On average, there are 7 rainy days in Vaasa during September.
Weather wise, is September a good time to visit Vaasa?
The weather in Vaasa in September is ok.
Can it snow in Vaasa in September?
On average, there are 0 snowy days in Vaasa in September.
More about the weather in Vaasa