Siena weather live forecast

Today's maximum temperature in Siena is expected to be 33°C. Select a day from the live weather forecast for Siena, Tuscany, Italy for more weather parameters.

Thursday
18th Jun
33

21

15

8
Friday
19th Jun
34

23

11

8
Saturday
20th Jun
35

23

12

8
Sunday
21st Jun
35

23

13

8
Monday
22nd Jun
34

23

10

8

5-day weather forecast updated at 04:01 on Thursday 18th June 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 18th June 2026

Expect clear skies in Siena, Tuscany with a maximum temperature of 33°C, high levels of heat & humidity, maximum UV of 8 (Very High) and 15 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the north-west.

33
°C maximum temperature
21
°C minimum temperature
clear skies
15
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
H
high heat & humidity
8
kph wind from NW

Siena weather for Friday 19th June 2026

Expect scattered clouds in Siena, Tuscany with a maximum temperature of 34°C, high levels of heat & humidity, maximum UV of 8 (Very High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 6 kph from the north.

34
°C maximum temperature
23
°C minimum temperature
scattered clouds
11
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
H
high heat & humidity
6
kph wind from N

Siena weather for Saturday 20th June 2026

Expect scattered clouds in Siena, Tuscany with a maximum temperature of 35°C, high levels of heat & humidity, maximum UV of 8 (Very High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the north-west.

35
°C maximum temperature
23
°C minimum temperature
scattered clouds
12
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
H
high heat & humidity
10
kph wind from NW

Siena weather for Sunday 21st June 2026

Expect scattered clouds in Siena, Tuscany with a maximum temperature of 35°C, high 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 8 kph from the north.

35
°C maximum temperature
23
°C minimum temperature
scattered clouds
13
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
H
high heat & humidity
8
kph wind from N

Siena weather for Monday 22nd June 2026

Expect scattered clouds in Siena, Tuscany with a maximum temperature of 34°C, high levels of heat & humidity, maximum UV of 8 (Very High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the north-east.