Click on a day for an hourly weather forecast
The temperatures in Bellinzona in September are quite cold with temperatures between 8°C and 18°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Bellinzona 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 Bellinzona in September 2026.
If you’re planning to visit Bellinzona in the near future, we highly recommend that you review the 14 day weather forecast for Bellinzona before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 2° / -5° | 5 | 22 | 4 | 59 mm | Awful | Bellinzona in January |
| February | 3° / -4° | 5 | 20 | 3 | 68 mm | Awful | Bellinzona in February |
| March | 7° / -2° | 6 | 23 | 2 | 79 mm | Bad | Bellinzona in March |
| April | 11° / 2° | 7 | 23 | 0 | 144 mm | Bad | Bellinzona in April |
| May | 15° / 5° | 12 | 19 | 0 | 166 mm | Ok | Bellinzona in May |
| June | 20° / 9° | 12 | 18 | 0 | 155 mm | Ok | Bellinzona in June |
| July | 22° / 11° | 12 | 19 | 0 | 142 mm | Ok | Bellinzona in July |
| August | 22° / 11° | 10 | 21 | 0 | 162 mm | Ok | Bellinzona in August |
| September | 18° / 8° | 6 | 24 | 0 | 97 mm | Good | Bellinzona in September |
| October | 13° / 4° | 5 | 26 | 0 | 139 mm | Ok | Bellinzona in October |
| November | 7° / 0° | 7 | 22 | 1 | 203 mm | Bad | Bellinzona in November |
| December | 3° / -4° | 5 | 23 | 3 | 94 mm | Awful | Bellinzona in December |