Siena weather live forecast

Today's maximum temperature in Siena is expected to be 37°C. Select a day from the live weather forecast for Siena, Tuscany, Italy for more weather parameters.

5-day weather forecast updated at 04:02 on Sunday 10th August 2025 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 Monday 11th August 2025

Expect clear skies in Siena, Tuscany with a maximum temperature of 37°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 18 kph from the east.

  • 37°C maximum temperature37
    °C maximum temperature
  • 24°C minimum temperature24
    °C minimum temperature
  • Clear skies
    clear skies
  • 13 hours of bright sunshine13
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • High heat & humidityH
    high heat & humidity
  • Gentle breeze of 18 kph from the East18
    kph wind from E

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Siena weather for Tuesday 12th August 2025

Expect scattered clouds in Siena, Tuscany with a maximum temperature of 37°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 a light breeze of 12 kph from the east.

  • 37°C maximum temperature37
    °C maximum temperature
  • 23°C minimum temperature23
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 11 hours of bright sunshine11
    hours of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • High heat & humidityH
    high heat & humidity
  • Light breeze of 12 kph from the East12
    kph wind from E

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Siena weather for Wednesday 13th August 2025

Expect isolated thunderstorms in Siena, Tuscany with a maximum temperature of 36°C, high levels of heat & humidity, maximum UV of 7 (High) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 35% chance of some rain and a light breeze of 7 kph from the east.

  • 36°C maximum temperature36
    °C maximum temperature
  • 24°C minimum temperature24
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 35% chance of some rain35
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • High heat & humidityH
    high heat & humidity
  • Light breeze of 7 kph from the East7
    kph wind from E

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Siena weather for Thursday 14th August 2025

Expect sunshine and showers in Siena, Tuscany with a maximum temperature of 35°C, high levels of heat & humidity, maximum UV of 7 (High) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 25% chance of some rain and a light breeze of 9 kph from the north.

  • 35°C maximum temperature35
    °C maximum temperature
  • 23°C minimum temperature23
    °C minimum temperature
  • Sunshine and showers
    sunshine and showers
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 25% chance of some rain25
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • High heat & humidityH
    high heat & humidity
  • Light breeze of 9 kph from the North9
    kph wind from N

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Siena weather for Friday 15th August 2025

Expect isolated thunderstorms in Siena, Tuscany with a maximum temperature of 35°C, high levels of heat & humidity, maximum UV of 8 (Very High) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 25% chance of some rain and a light breeze of 11 kph from the north.

  • 35°C maximum temperature35
    °C maximum temperature
  • 22°C minimum temperature22
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 25% chance of some rain25
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • High heat & humidityH
    high heat & humidity
  • Light breeze of 11 kph from the North11
    kph wind from N

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  • Book breaks in the French Riviera, Normandy & more
  • Plus the Canaries, Corsica, Spain, Italy, Portugal & Andorra
Go to Pierre & Vacances deal >>

Expires at 23:59 on Tuesday 30th Sep 2025 · View all Pierre & Vacances offers

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Metric (°C / mm)  |  Imperial (°F / inches)

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