Click on a day for an hourly weather forecast
The temperatures in Sulmona in September are comfortable with low of 11°C and and high up to 23°C.
You can expect about 3 to 8 days of rain in Sulmona 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 Sulmona in September 2026.
If you’re planning to visit Sulmona in the near future, we highly recommend that you review the 14 day weather forecast for Sulmona before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 7° / -3° | 9 | 15 | 7 | 147 mm | Awful | Sulmona in January |
| February | 8° / -2° | 9 | 13 | 7 | 149 mm | Awful | Sulmona in February |
| March | 11° / 0° | 8 | 19 | 4 | 145 mm | Awful | Sulmona in March |
| April | 15° / 4° | 8 | 21 | 1 | 139 mm | Ok | Sulmona in April |
| May | 19° / 8° | 10 | 21 | 0 | 163 mm | Ok | Sulmona in May |
| June | 24° / 12° | 10 | 20 | 0 | 160 mm | Good | Sulmona in June |
| July | 28° / 15° | 7 | 24 | 0 | 103 mm | Good | Sulmona in July |
| August | 29° / 15° | 6 | 25 | 0 | 90 mm | Good | Sulmona in August |
| September | 23° / 11° | 7 | 23 | 0 | 104 mm | Good | Sulmona in September |
| October | 17° / 6° | 4 | 27 | 0 | 77 mm | Good | Sulmona in October |
| November | 12° / 3° | 7 | 22 | 1 | 152 mm | Bad | Sulmona in November |
| December | 7° / -1° | 7 | 20 | 4 | 146 mm | Awful | Sulmona in December |