Weather in Siena in May
Siena, Italy averages a high of 21.4°C (70.5°F) and low of 10.5°C (50.9°F) in May, with 10 rain days and 12.1 hours of daily sunshine. Travel score: 78.6/100 (Good). The best time to visit Siena is July.
High
21°C71°F
Low
11°C51°F
🌧️
10
rain days
☀️
12.1
hrs/day sunshine
💧
71%
humidity
79— Good
May in Siena is mild and occasionally wet — good for most activities.
What are the average temperatures in Siena?
How much does it rain in Siena in May?
Siena receives an average of 68.6mm of rainfall across 10 rainy days in May. The annual total is 830.5mm.
What should I pack for Siena in May?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Mix of light and warm layers
Mild temperatures around 21°C
🧴
Sunscreen SPF 30+
12 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Recommended
🧥
Light rain jacket
Some rainy days expected (10 days)
☔
Umbrella
Be prepared for occasional showers
Traveling to Italy in May?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
🏛️ 121 countries·📅 Updated yearly·✈️ Free forever
Compare Siena
Popular comparisons:
How can I plan my trip to Siena?
What other cities are near Siena?
What are other popular cities in Italy?
What is the weather like in other months in Siena?
Data based on 1994–2024 averages · Last updated: 2024-12-31