Weather in Siena in August
Siena, Italy averages a high of 29.7°C (85.5°F) and low of 17.8°C (64°F) in August, with 6 rain days and 12.5 hours of daily sunshine. Travel score: 91.9/100 (Excellent). The best time to visit Siena is July.
High
30°C85°F
Low
18°C64°F
🌧️
6
rain days
☀️
12.5
hrs/day sunshine
💧
61%
humidity
92— Excellent
August in Siena is hot and mostly dry — ideal for sightseeing and outdoor activities.
What are the average temperatures in Siena?
How much does it rain in Siena in August?
Siena receives an average of 40.4mm of rainfall across 6 rainy days in August. The annual total is 830.5mm.
What should I pack for Siena in August?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 30°C
🧴
Sunscreen SPF 30+
13 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Traveling to Italy in August?
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