Click on a day for an hourly weather forecast
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.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 5° / -2° | 5 | 21 | 5 | 60 mm | Awful | Biella in January |
| February | 7° / -1° | 5 | 19 | 4 | 72 mm | Bad | Biella in February |
| March | 11° / 2° | 7 | 22 | 2 | 119 mm | Awful | Biella in March |
| April | 15° / 5° | 9 | 21 | 0 | 177 mm | Ok | Biella in April |
| May | 19° / 8° | 13 | 18 | 0 | 257 mm | Ok | Biella in May |
| June | 24° / 11° | 14 | 16 | 0 | 230 mm | Good | Biella in June |
| July | 27° / 13° | 14 | 17 | 0 | 220 mm | Good | Biella in July |
| August | 26° / 13° | 11 | 20 | 0 | 210 mm | Good | Biella in August |
| September | 22° / 10° | 5 | 25 | 0 | 120 mm | Good | Biella in September |
| October | 16° / 7° | 4 | 26 | 0 | 161 mm | Good | Biella in October |
| November | 10° / 4° | 7 | 22 | 1 | 265 mm | Bad | Biella in November |
| December | 6° / 0° | 4 | 23 | 4 | 87 mm | Awful | Biella in December |