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Siena
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Siena Climate by Month

Siena has a warm maritime climate that is strongly influenced by the Mediterranean sea. Due to this influence the weather is very stable. This means summer and winter temperatures are not very far apart and it rarely gets really hot or extremely cold. Rainfall is evenly distributed throughout the year, but in summer months the average rainfall is a bit lower. In winter months, the average daily temperature is around 10°C .

The graphs below provide an overview of the climate in Siena (Tuscany), Italy. They present long-term patterns and averages of weather conditions over a 30-year period.

Average day and night temperature

The mean minimum and maximum temperatures over the year.

Monthly hours of sunshine

The average monthly total hours of sunshine over the year

Monthly precipitation

The mean monthly precipitation over the year, including rain, snow, hail etc.

Monthly rainy days

The average number of days each month with rain, snow, hail etc.

Forecast for Siena

Tue   Nov 05
18°C | 3°C
NE 7 km/h
partly cloudy and no rain

partly cloudy and no rain

hourly forecast
Wed   Nov 06
19°C | 5°C
NE 7 km/h
partly cloudy and no rain

partly cloudy and no rain

hourly forecast
Thu   Nov 07
19°C | 4°C
E 7 km/h
almost clear and no rain

almost clear and no rain

hourly forecast
5-Day Forecast 10-Day Forecast

The best time of year to visit Siena in Italy

During the months of May, September and October you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:

  • When is summer in Siena?
    The hottest season / summer takes place in June, July, August and September.
  • Which is the warmest month in Siena?
    August has an average maximum temperature of 31°C and is the warmest month of the year.
  • Which is the coldest month in Siena?
    The coldest month is January with an average maximum temperature of 10°C.
  • Which is the wettest month in Siena?
    November tops the wettest month list with 121 mm of rainfall.
  • Which is the driest month in Siena?
    July is the driest month with 33 mm of precipitation.
  • Which is the sunniest month in Siena?
    July is the sunniest month with an average of 350 hours of sunshine.

    • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

     

     


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