Weather in Siena for May 2025
In general, the average temperature in Siena at the beginning of May is 16.4 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 22 °C by the end of May.
Expect significant rainfall in Siena during May, with an average of 19 rainy days.
Is May a good time to visit Siena? check out the best time to travel to Siena page.
- New! Chat with our AI weatherman - it’s amazing and free.
Siena in May average weather
Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
---|---|---|---|---|---|---|
1 18° | 2 12° | 3 14° | 4 16° | |||
5 19° | 6 20° | 7 16° | 8 21° | 9 20° | 10 22° | 11 23° |
12 23° | 13 23° | 14 23° | 15 21° | 16 21° | 17 21° | 18 24° |
19 22° | 20 24° | 21 19° | 22 20° | 23 21° | 24 23° | 25 20° |
26 22° | 27 24° | 28 22° | 29 22° | 30 22° | 31 22° |
You can click on date
Temperatures trend during May in Siena
May weather day by day
Date | Weather | Temperatures | Rain | UV | More |
---|---|---|---|---|---|
1 May | Moderate or heavy rain with thunder | 18° /12° | 16.5 mm | 4 | |
2 May | Light rain shower | 12° /8° | 4 mm | 3 | |
3 May | Light rain shower | 14° /8° | 7.6 mm | 3 | |
4 May | Patchy rain possible | 16° /6° | 0.5 mm | 4 | |
5 May | Patchy rain possible | 19° /7° | 0 mm | 4 | |
6 May | Partly cloudy | 20° /8° | 0 mm | 6 | |
7 May | Moderate or heavy rain with thunder | 16° /10° | 13.3 mm | 4 | |
8 May | Patchy rain possible | 21° /7° | 0.1 mm | 5 | |
9 May | Partly cloudy | 20° /9° | 0 mm | 6 | |
10 May | Sunny | 22° /8° | 0 mm | 6 | |
11 May | Sunny | 23° /9° | 0 mm | 6 | |
12 May | Partly cloudy | 23° /9° | 0 mm | 6 | |
13 May | Patchy rain possible | 23° /11° | 0.5 mm | 5 | |
14 May | Patchy rain possible | 23° /10° | 0 mm | 5 | |
15 May | Light rain shower | 21° /13° | 2.4 mm | 5 | |
16 May | Light rain shower | 21° /11° | 4.6 mm | 5 | |
17 May | Patchy rain possible | 21° /10° | 0.8 mm | 5 | |
18 May | Sunny | 24° /9° | 0 mm | 6 | |
19 May | Patchy light rain with thunder | 22° /12° | 4.6 mm | 5 | |
20 May | Moderate or heavy rain shower | 24° /13° | 17.9 mm | 5 | |
21 May | Light rain shower | 19° /11° | 13.1 mm | 4 | |
22 May | Patchy light rain with thunder | 20° /10° | 4 mm | 5 | |
23 May | Patchy light drizzle | 21° /9° | 2.2 mm | 5 | |
24 May | Patchy rain possible | 23° /9° | 0.3 mm | 5 | |
25 May | Patchy light drizzle | 20° /10° | 3.1 mm | 5 | |
26 May | Overcast | 22° /10° | 0 mm | 5 | |
27 May | Patchy rain possible | 24° /11° | 0 mm | 5 | |
28 May | Light rain shower | 22° /12° | 1.6 mm | 5 | |
29 May | Light rain shower | 22° /12° | 3.8 mm | 5 | |
30 May | Light rain shower | 22° /12° | 1.7 mm | 5 | |
31 May | Patchy rain possible | 22° /11° | 2.5 mm | 5 | |
Next |
Siena in May - FAQ
What to pack to Siena in May?
As you prepare for your trip to Siena in May, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Siena, during May, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
- Umbrellas/Raincoats: For rainy days
May rainfall patterns in Siena
UV exposure in Siena during May
Quick links
Get accurate weather forecasts for Siena, located at latitude 43.318 and longitude 11.331. Stay updated with localized weather information tailored for Siena.