The temperatures in Biella in September are comfortable with low of 10°C and and high up to 22°C.
You can expect about 3 to 8 days of rain in Biella 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 Biella in September 2026.
If you’re planning to visit Biella in the near future, we highly recommend that you review the 14 day weather forecast for Biella before you arrive.
Temperatures
22° / 10°
Rainy Days
5
Snowy Days
0
Dry Days
25
Rainfall
120
mm
Sun Hours
11.3
Hrs
