The climate in Sulmona during September can be summarized as mild and a little damp.
September is in the fall / autumn in Sulmona and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 21°C (70°F), whilst at night 13°C (56°F) is normal.
Daytime temperature | 21°C 69.8°F |
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Nightly temperature | 13.4°C 56.1°F |
Average temperature | 17.2°C 63°F |
Daily sunshine | 7.7 hrs |
Avg rainfall | 84 mm 3.3 ins |
Rainy days | 9 days |
Sea temperature | 23.4°C 74°F |
Humidity | 71% |
Windspeed | 9.4kph 6 mph |
On average September is the 4th wettest month of the year in Sulmona with around 84mm 3.3 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.7 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Sulmona in September 2025.
Best places to visit in September
Hottest month: | July | 24.6°C 76.3°F |
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Driest month: | July | 56mm 2.2ins |
Sunniest month: | July | 10.1hrs |
Coldest month: | January | 6°C 42.8°F |
Wettest month: | November | 100mm 3.9ins |