Siena weather live forecast

Today's maximum temperature in Siena is expected to be 27°C. Select a day from the live weather forecast for Siena, Tuscany, Italy for more weather parameters.

Monday
28th Sep
27

16

12

5
Tuesday
29th Sep
27

15

12

5
Wednesday
30th Sep
27

15

3

5
Thursday
1st Oct
27

15

5

5
Friday
2nd Oct
27

14

8

2

5-day weather forecast updated at 04:01 on Sunday 27th September 2026 GMT

More about Siena

Siena by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Tuscany

Pierre & Vacances: Latest special offers on holidays

Sale

Save on 2026 holidays with latest Pierre & Vacances deals
Offers on beach, mountain, countryside & ski destinations
Book breaks to France, across Europe & beyond

Go to Pierre & Vacances deal >>

View all Pierre & Vacances offers

Holiday accomodation

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 28th September 2026

Expect clear skies in Siena, Tuscany with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 5 (Moderate) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 4 kph from the north-east.

27
°C maximum temperature
16
°C minimum temperature
clear skies
12
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
L
low heat & humidity
4
kph wind from NE

Siena weather for Tuesday 29th September 2026

27
°C maximum temperature
15
°C minimum temperature
clear skies
12
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
L
low heat & humidity
4
kph wind from NE

Siena weather for Wednesday 30th September 2026

Expect broken clouds in Siena, Tuscany with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 5 (Moderate) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 4 kph from the north-east.

27
°C maximum temperature
15
°C minimum temperature
broken clouds
3
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
L
low heat & humidity
4
kph wind from NE

Siena weather for Thursday 1st October 2026

Expect broken clouds in Siena, Tuscany with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 5 (Moderate) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 6 kph from the north-east.

27
°C maximum temperature
15
°C minimum temperature
broken clouds
5
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
L
low heat & humidity
6
kph wind from NE

Siena weather for Friday 2nd October 2026

Expect broken clouds in Siena, Tuscany with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 2 (Low) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the north-east.