Siena weather live forecast

Today's maximum temperature in Siena is expected to be 30°C. Select a day from the live weather forecast for Siena, Tuscany, Italy for more weather parameters.

Thursday
20th Aug
30

24

7

6
Friday
21st Aug
26

23

4

5
Saturday
22nd Aug
28

22

6

7
Sunday
23rd Aug
30

22

7

7
Monday
24th Aug
28

23

4

5

5-day weather forecast updated at 04:01 on Wednesday 19th 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 Thursday 20th August 2026

Expect broken clouds in Siena, Tuscany with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 6 (High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the south.

30
°C maximum temperature
24
°C minimum temperature
broken clouds
7
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
M
moderate heat & humidity
19
kph wind from S

Siena weather for Friday 21st August 2026

Expect isolated thunderstorms in Siena, Tuscany with a maximum temperature of 26°C, low levels of heat & humidity, maximum UV of 5 (Moderate) and 4 hours of bright sunshine. There are 10-20 mm of rainfall expected with 85% chance of some rain and a light breeze of 10 kph from the south.

26
°C maximum temperature
23
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
5
UV index (Moderate)
85
% chance of some rain
<20
mm of rainfall expected
L
low heat & humidity
10
kph wind from S

Siena weather for Saturday 22nd August 2026

Expect broken clouds in Siena, Tuscany with a maximum temperature of 28°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 a light breeze of 9 kph from the south-west.

28
°C maximum temperature
22
°C minimum temperature
broken clouds
6
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
M
moderate heat & humidity
9
kph wind from SW

Siena weather for Sunday 23rd August 2026

Expect broken clouds in Siena, Tuscany with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the south-east.

30
°C maximum temperature
22
°C minimum temperature
broken clouds
7
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
M
moderate heat & humidity
8
kph wind from SE

Siena weather for Monday 24th 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 4 hours of bright sunshine. There are 5-10 mm of rainfall expected with 40% chance of some rain and a gentle breeze of 13 kph from the south-east.