Weather in Siena in December
Siena, Italy averages a high of 9.6°C (49.3°F) and low of 2.1°C (35.8°F) in December, with 10 rain days and 5.9 hours of daily sunshine. Travel score: 51.8/100 (Mixed). The best time to visit Siena is July.
High
10°C49°F
Low
2°C36°F
🌧️
10
rain days
☀️
5.9
hrs/day sunshine
💧
85%
humidity
52— Mixed
December in Siena is cool and occasionally wet — mixed conditions — plan indoor alternatives.
What are the average temperatures in Siena?
How much does it rain in Siena in December?
Siena receives an average of 83mm of rainfall across 10 rainy days in December. The annual total is 830.5mm.
What should I pack for Siena in December?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Warm coat
Cool weather with highs around 10°C
🧶
Sweaters and warm layers
Layer up for comfort
🧤
Warm gloves
Cold nights around 2°C
🧣
Warm scarf
Protect against cold winds
Traveling to Italy in December?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31