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Siena

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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 50–60°F, 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 68–79°F, 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 49–65°F, 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 41–48°F, 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. 58.6°F / Annual rainfall: approx. 35 mm / Summer humidity: 50%–60% / Rainiest month: October

Siena monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
43.5°F
1.8
February
48.4°F
4.1
March
50.5°F
4.1
April
54.9°F
2.8
May
60.3°F
4.2
June
68.7°F
1
July
79.5°F
0.2
August
79.5°F
1.6
September
65.7°F
6.4
October
60.6°F
6.5
November
49.6°F
0.6
December
41.9°F
2.2
Siena weather for the next seven days
10/22
Wednesday
Moderate rain
66.1°F/54.8°F
10/23
Thursday
Moderate rain
67.6°F/55°F
10/24
Friday
Patchy rain nearby
63.8°F/50.3°F
10/25
Saturday
Patchy rain nearby
61.7°F/55.3°F
10/26
Sunday
Heavy rain
67.4°F/55.5°F
10/27
Monday
Moderate rain
57.9°F/47.5°F
10/28
Tuesday
Sunny
58.6°F/43.1°F

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.