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.
Temperatures
23° / 11°
Rainy Days
7
Snowy Days
0
Dry Days
23
Rainfall
104
mm
Sun Hours
11.4
Hrs
