Month-by-month travel weather
Siena May weather
Siena, Italy · May
Flexible outfits work best
May is warm and comfortable for many walking plans. It’s often easier than peak summer.
Sunny midday can feel hot, while evenings can still cool down—flexible layering helps.
May averages at a glance
Average low
around 12–14°C
Average high
around 21–24°C
Average rainfall
around 50–95 mm
Wet days
about 6–9 days
What to wear in May in Siena
Actual feel will change with wind and rain, but use the suggestions below to build a comfortable layered outfit.
- • T-shirt with a thin evening/indoor layer works well.
- • Comfortable shoes help most on slopes.
- • Consider hat/sunscreen on sunny days.
Travel tips for visiting Siena in May
- • Avoid long uphill routes at peak sun hours if you can.
- • A compact umbrella is a steady backup.
May weather in Siena — FAQ
Q. Is May hot?
A. Warm, but often not peak-summer hot. Sun exposure matters.
Q. Does it rain in May?
A. It can. A compact umbrella is a simple backup.
Explore Siena
These pages are connected so you can compare conditions and decide for yourself.