Siena weather live forecast

Today's maximum temperature in Siena is expected to be 28°C. Select a day from the live weather forecast for Siena, Tuscany, Italy for more weather parameters.

Tuesday
25th Aug
28

19

7

5
Wednesday
26th Aug
31

20

6

7
Thursday
27th Aug
34

21

8

6
Friday
28th Aug
34

24

9

6
Saturday
29th Aug
30

21

10

6

5-day weather forecast updated at 04:01 on Tuesday 25th 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 Tuesday 25th August 2026

Expect isolated thunderstorms in Siena, Tuscany with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 5 (Moderate) and 7 hours of bright sunshine. There are 10-20 mm of rainfall expected with 52% chance of some rain and a gentle breeze of 13 kph from the west.

28
°C maximum temperature
19
°C minimum temperature
isolated thunderstorms
7
hours of sunshine
5
UV index (Moderate)
52
% chance of some rain
<20
mm of rainfall expected
L
low heat & humidity
13
kph wind from W

Siena weather for Wednesday 26th August 2026

Expect broken clouds in Siena, Tuscany with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 5 kph from the west.

31
°C maximum temperature
20
°C minimum temperature
broken clouds
6
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
M
moderate heat & humidity
5
kph wind from W

Siena weather for Thursday 27th August 2026

Expect scattered clouds in Siena, Tuscany with a maximum temperature of 34°C, high levels of heat & humidity, maximum UV of 6 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 9 kph from the south.

34
°C maximum temperature
21
°C minimum temperature
scattered clouds
8
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
H
high heat & humidity
9
kph wind from S

Siena weather for Friday 28th August 2026

Expect scattered clouds in Siena, Tuscany with a maximum temperature of 34°C, high levels of heat & humidity, maximum UV of 6 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the west.

34
°C maximum temperature
24
°C minimum temperature
scattered clouds
9
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
H
high heat & humidity
12
kph wind from W

Siena weather for Saturday 29th 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 10 hours of bright sunshine. There are 5-10 mm of rainfall expected with 19% chance of some rain and a gentle breeze of 17 kph from the west.