
Siena in September
Siena in September
Siena, Italy
Visiting Siena in September means experiencing the autumn. During autumn, Siena offers crisp air, changing colours, and a cosy atmosphere.
Weather in Siena in September
Average highs around 25.7C and lows near 14.9C. 92.7mm average precipitation and about 9 rainy days. September typically sits between August and October conditions, so it is useful for travelers wanting a balanced window in Siena. Pack flexible layers for changing daytime and evening temperatures.
Temperature
September brings autumn conditions in Siena, Italy. The average temperature is about 20.3C, with lows near 14.9C and highs around 25.7C.
Sunshine Hours
Siena, Italy usually gets around 10.5 hours of sunshine per day in September, with roughly 12.5 daylight hours available for sightseeing.
Rain
September sees around 92.7mm of rainfall over about 9 days. Rain can occur for around 3 hours per day on average.












