Click on a day for an hourly weather forecast
The temperatures in Asti in September are comfortable with low of 14°C and and high up to 25°C.
You can expect about 3 to 8 days of rain in Asti 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 Asti in September 2025.
If you’re planning to visit Asti in the near future, we highly recommend that you review the 14 day weather forecast for Asti before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 6° / 0° | 4 | 23 | 4 | 76 mm | Awful | Asti in January |
| February | 8° / 1° | 6 | 18 | 4 | 120 mm | Bad | Asti in February |
| March | 13° / 5° | 7 | 23 | 1 | 140 mm | Bad | Asti in March |
| April | 18° / 8° | 6 | 23 | 0 | 151 mm | Good | Asti in April |
| May | 22° / 11° | 9 | 22 | 0 | 184 mm | Ok | Asti in May |
| June | 27° / 15° | 10 | 20 | 0 | 206 mm | Good | Asti in June |
| July | 30° / 17° | 9 | 22 | 0 | 179 mm | Ok | Asti in July |
| August | 30° / 17° | 7 | 24 | 0 | 161 mm | Ok | Asti in August |
| September | 25° / 14° | 5 | 25 | 0 | 116 mm | Perfect | Asti in September |
| October | 18° / 10° | 5 | 26 | 0 | 133 mm | Good | Asti in October |
| November | 11° / 6° | 8 | 22 | 0 | 245 mm | Bad | Asti in November |
| December | 7° / 1° | 4 | 24 | 3 | 81 mm | Bad | Asti in December |