Siena weather live forecast

Today's maximum temperature in Siena is expected to be 36°C. Select a day from the live weather forecast for Siena, Tuscany, Italy for more weather parameters.

Saturday
15th Aug
36

25

14

7
Sunday
16th Aug
33

24

10

6
Monday
17th Aug
30

24

6

6
Tuesday
18th Aug
32

23

8

7
Wednesday
19th Aug
34

22

13

7

5-day weather forecast updated at 04:01 on Saturday 15th August 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 Saturday 15th August 2026

Expect clear skies in Siena, Tuscany with a maximum temperature of 36°C, high levels of heat & humidity, maximum UV of 7 (High) and 14 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the north-east.

36
°C maximum temperature
25
°C minimum temperature
clear skies
14
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
H
high heat & humidity
8
kph wind from NE

Siena weather for Sunday 16th August 2026

Expect isolated thunderstorms in Siena, Tuscany with a maximum temperature of 33°C, high levels of heat & humidity, maximum UV of 6 (High) and 10 hours of bright sunshine. There are 0-2 mm of rainfall expected with 26% chance of some rain and a light breeze of 11 kph from the west.

33
°C maximum temperature
24
°C minimum temperature
isolated thunderstorms
10
hours of sunshine
6
UV index (High)
26
% chance of some rain
<2
mm of rainfall expected
H
high heat & humidity
11
kph wind from W

Siena weather for Monday 17th August 2026

Expect isolated thunderstorms in Siena, Tuscany with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 6 (High) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 55% chance of some rain and a light breeze of 11 kph from the west.

30
°C maximum temperature
24
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
6
UV index (High)
55
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
11
kph wind from W

Siena weather for Tuesday 18th August 2026

Expect broken clouds in Siena, Tuscany with a maximum temperature of 32°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the east.

32
°C maximum temperature
23
°C minimum temperature
broken clouds
8
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
M
moderate heat & humidity
7
kph wind from E

Siena weather for Wednesday 19th August 2026

Expect clear skies in Siena, Tuscany with a maximum temperature of 34°C, high levels of heat & humidity, maximum UV of 7 (High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the west.