Siena weather live forecast

Today's maximum temperature in Siena is expected to be 31°C. Select a day from the live weather forecast for Siena, Tuscany, Italy for more weather parameters.

Monday
25th May
31

20

13

UV8
Tuesday
26th May
32

20

10

UV9
Wednesday
27th May
33

21

13

UV8
Thursday
28th May
31

21

10

UV8
Friday
29th May
30

20

10

UV7

5-day weather forecast updated at 04:01 on Monday 25th 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 Monday 25th May 2026

Expect clear skies in Siena, Tuscany with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the north-east.

31
°C maximum temperature
20
°C minimum temperature
clear skies
13
hours of sunshine
UV8
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
12
kph wind from NE

Siena weather for Tuesday 26th May 2026

Expect scattered clouds in Siena, Tuscany with a maximum temperature of 32°C, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 6 kph from the east.

32
°C maximum temperature
20
°C minimum temperature
scattered clouds
10
hours of sunshine
UV9
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
6
kph wind from E

Siena weather for Wednesday 27th May 2026

Expect clear skies in Siena, Tuscany with a maximum temperature of 33°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the north-west.

33
°C maximum temperature
21
°C minimum temperature
clear skies
13
hours of sunshine
UV8
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
11
kph wind from NW

Siena weather for Thursday 28th May 2026

Expect isolated thunderstorms in Siena, Tuscany with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 10 hours of bright sunshine. There are 0-2 mm of rainfall expected with 53% chance of some rain and little or no wind of 4 kph from the north.

31
°C maximum temperature
21
°C minimum temperature
isolated thunderstorms
10
hours of sunshine
UV8
UV index (Very High)
53
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
4
kph wind from N

Siena weather for Friday 29th May 2026

Expect isolated thunderstorms in Siena, Tuscany with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 10 hours of bright sunshine. There are 0-2 mm of rainfall expected with 46% chance of some rain and little or no wind of 3 kph from the east.