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Siena

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Travel Info
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Travel Info

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Siena Weather and climate

Data source：Meteostat
Update date：2025-09

Siena year round climate
  • Spring (March–May): Average 10.3–15.7°C, mild and comfortable climate, abundant sunshine, and less rainfall. Common activities: Visiting historical buildings, strolling through the countryside, and savoring Tuscan food and wine. Recommended clothing: Light jacket, comfortable trousers or skirt, and comfortable shoes.
  • Summer (June–August): Average 20.4–26.4°C, hot and dry, strong sunshine. Common activities: Enjoying coffee at outdoor cafes, visiting museums and churches (indoor attractions), and evening walks to admire the sunset. Recommended clothing: Light and breathable clothing, sun hat, sunglasses, and sunscreen.
  • Autumn (September–November): Average 9.8–18.7°C, pleasant climate, larger temperature difference between day and night, slightly more rainfall in October. Common activities: Visiting wineries, enjoying the atmosphere of the autumn harvest, and appreciating the autumn colors. Recommended clothing: Comfortable long-sleeved shirts, light jacket, and comfortable shoes.
  • Winter (December–February): Average 5.5–9.1°C, cold and dry, occasional rainfall. Common activities: Warming up by the fireplace, visiting museums and churches (indoor attractions). Recommended clothing: Warm coat, scarf, hat, and gloves.
Siena climatological average

Annual average temperature: approx. 14.8°C / Annual rainfall: approx. 35 mm / Summer humidity: 50%–60% / Rainiest month: October

Siena monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
6.4°C
1.8
February
9.1°C
4.1
March
10.3°C
4.1
April
12.7°C
2.8
May
15.7°C
4.2
June
20.4°C
1
July
26.4°C
0.2
August
26.4°C
1.6
September
18.7°C
6.4
October
15.9°C
6.5
November
9.8°C
0.6
December
5.5°C
2.2
Siena weather for the next seven days
10/21
Tuesday
Patchy rain nearby
18.9°C/13°C
10/22
Wednesday
Moderate rain
18.9°C/12.7°C
10/23
Thursday
Moderate rain
19.8°C/12.8°C
10/24
Friday
Patchy rain nearby
17.6°C/10.1°C
10/25
Saturday
Patchy rain nearby
16.5°C/13°C
10/26
Sunday
Heavy rain
19.6°C/13°C
10/27
Monday
Moderate rain
14.4°C/8.6°C

Siena FAQ

What is the best time to visit?
Spring and autumn are the best times to visit Siena as the weather during these two seasons is mild, making it ideal for visiting attractions and admiring the scenery.
Which attractions are must-sees?
Must-visit attractions in Siena include the ancient town of Pienza, San Gimignano and the Double Row of Cypresses. These attractions not only showcase medieval architectural styles but also provide a rich cultural experience.