The climate in Siderno during September can be summarized as warm and reasonably dry.
September is in the fall / autumn in Siderno and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a comfortable 27°C (80°F), whilst at night 19°C (66°F) is normal.
Daytime temperature | 26.6°C 79.9°F |
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Nightly temperature | 18.8°C 65.8°F |
Average temperature | 22.7°C 72.9°F |
Daily sunshine | 8.6 hrs |
Avg rainfall | 54 mm 2.1 ins |
Rainy days | 6 days |
Sea temperature | 25.3°C 77.5°F |
Humidity | 68% |
Windspeed | 11.2kph 7 mph |
On average September is the 5th driest month of the year in Siderno with around 54mm 2.1 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 6 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.6 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 Siderno in September 2025.
Best places to visit in September
Hottest month: | August | 29.1°C 84.4°F |
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Driest month: | June | 15mm 0.6ins |
Sunniest month: | July | 11.3hrs |
Coldest month: | January | 13.3°C 55.9°F |
Wettest month: | December | 132mm 5.2ins |