Siena weather in September
Warm and pleasant, with occasional showers. Average highs of 25°C and lows of 15°C, with around 8 rainy days expected throughout the month.
✦ This is a recommended month to visit Siena. The combination of weather, atmosphere and experience is at its best.
Average high
25°C
Average low
15°C
Rainy days
8 days
Best months to visit
June, July, August, September
What to do in Siena in September
Whatever the weather, Siena rewards curious visitors. Here are some of the best ways to spend your time:
Explore the Piazza del Campo (Palio preparation if summer)
Tour the Cathedral with its spectacular marble facade
Climb the bell tower (Torre del Mangia) for views
Visit the Pinacoteca Nazionale for Sienese art
Walk the medieval streets beyond the famous plaza
Day trip to nearby wine region (Chianti, Brunello)
What to pack for September
Light layers work well — T-shirts and shorts for the day, a light jacket for evenings. Comfortable walking shoes are a must. Bring a compact umbrella just in case.
Browse other months
January
10C
Cool, with occasional showers.
February
12C
Cool, with some rainy days.
March
14C
Cool, with occasional showers.
April
18C
Mild and comfortable, with occasional showers.
May
22C
Mild and comfortable, with some rainy days.
Recommended
June
28C
Warm and pleasant, with occasional showers.
Recommended
July
31C
Hot and humid, with occasional showers.
Recommended
August
31C
Hot and humid, with occasional showers.
Recommended
September (you are here)
25C
Warm and pleasant, with occasional showers.
October
20C
Mild and comfortable, with occasional showers.
November
15C
Cool, with some rainy days.
December
11C
Cool, with some rainy days.
Book your September trip to Siena
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