Climate in Siena (Tuscany), Italy

The graphs below show the monthly weather averages over the year.
* Data from weather station: Siena, Italy.

Average day and night temperature

The mean minimum and maximum temperatures over the year. Show in Fahrenheit

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. Show in Inches

Monthly rainy days

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

Weather Forecasts for Siena (Tuscany)

WED Sep 22
28°C | 11°C

Partly cloudy

THU Sep 23
29°C | 10°C

Partly cloudy

FRI Sep 24
30°C | 12°C

Partly cloudy

The best time of year to visit Siena in Italy

Siena has a warm maritime climate that is strongly influenced by the Mediterranean sea. Due to this influence the weather is very stable in Siena. This means summer and winter temperatures are not very far apart and it rarely gets really hot or extremely cold. The 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 ten degrees Celsius (50 degrees Fahrenheit).

Here are some average weather facts we collected from our historical climate data:

  • During the month of May, June and September you are most likely to experience good weather with pleasant average temperatures that fall between 20 degrees Celsius (68°F) and 25 degrees Celsius (77°F).
  • The months of October have a high chance of precipitation.
  • The warmest month is July with an average maximum temperature of 28°C (82°F).
  • The coldest month is January with an average maximum temperature of 8°C (46°F).
  • October is the most wet month. This month should be avoided if you are not a big fan of rain.
  • July is the driest month.
  • July is the most sunny month.
No idea where to travel to this year? We now have a tool which suggests which destination suits your ideal climate conditions. Find out where to go with our weather planner.