Siena weather live forecast

Today's maximum temperature in Siena is expected to be 20°C. Select a day from the live weather forecast for Siena, Tuscany, Italy for more weather parameters.

Tuesday
12th May
20

12

8

7
Wednesday
13th May
18

10

8

4
Thursday
14th May
20

10

9

6
Friday
15th May
16

12

3

5
Saturday
16th May
17

10

6

7

5-day weather forecast updated at 04:01 on Monday 11th May 2026 GMT

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The 5-day weather forecast for Tuscany (Siena) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Siena weather forecast by day

Below are the detailed weather forecasts for Siena for the next 5 days.

Siena weather for Tuesday 12th May 2026

Expect scattered clouds in Siena, Tuscany with a maximum temperature of 20°C, maximum UV of 7 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the west.

20
°C maximum temperature
12
°C minimum temperature
scattered clouds
8
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
20
°C wind chill
19
kph wind from W

Siena weather for Wednesday 13th May 2026

Expect sunshine and showers in Siena, Tuscany with a maximum temperature of 18°C, maximum UV of 4 (Moderate) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 56% chance of some rain and a light breeze of 7 kph from the west.

18
°C maximum temperature
10
°C minimum temperature
sunshine and showers
8
hours of sunshine
4
UV index (Moderate)
56
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
7
kph wind from W

Siena weather for Thursday 14th May 2026

Expect broken clouds in Siena, Tuscany with a maximum temperature of 20°C, maximum UV of 6 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the south-west.

20
°C maximum temperature
10
°C minimum temperature
broken clouds
9
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
20
°C wind chill
14
kph wind from SW

Siena weather for Friday 15th May 2026

Expect mostly cloudy with rain in Siena, Tuscany with a maximum temperature of 16°C, maximum UV of 5 (Moderate) and 3 hours of bright sunshine. There are 5-10 mm of rainfall expected with 79% chance of some rain and a gentle breeze of 13 kph from the west.

16
°C maximum temperature
12
°C minimum temperature
mostly cloudy with rain
3
hours of sunshine
5
UV index (Moderate)
79
% chance of some rain
<10
mm of rainfall expected
16
°C wind chill
13
kph wind from W

Siena weather for Saturday 16th May 2026

Expect isolated thunderstorms in Siena, Tuscany with a maximum temperature of 17°C, maximum UV of 7 (High) and 6 hours of bright sunshine. There are 5-10 mm of rainfall expected with 64% chance of some rain and a light breeze of 9 kph from the south.