The temperatures in Helsinki 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 Helsinki 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 Helsinki in September 2024.
If you’re planning to visit Helsinki in the near future, we highly recommend that you review the 14 day weather forecast for Helsinki before you arrive.
Temperatures
15° / 12°
Rainy Days
6
Snowy Days
0
Dry Days
24
Rainfall
91
mm
Sun Hours
9.0
Hrs
