Best year time to visit Siena

General weather information about Siena

Average annual temperature is 14.4 °C

Absolute maximum temperature: 36.7 °C

Absolute minimum temperature: -5.5 °C

Number of sunny days: 184

Number of rainy days: 181

Number of snow days:

Average annual precipitation: 963 mm

Look at detailed online map of Siena

* Weather data for Siena Italy is based on climate observations for 2023 year

Siena air temperature forecast for each month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Absolute maximum temperature (°C) 13.2 14.6 18.8 21.2 25.6 32.8 36.7 36.5 31.1 28.4 19.3 18.3
Average daytime temperature (°C) 9.7 10.6 14.7 16.5 20.9 26.3 31.8 31 26.8 22.9 14.2 11.2
Average temperature (°C) 5.6 5.4 9.4 10.8 15.7 20.5 25.3 24.1 20.4 17.4 10.1 6.9
Average night temperature (°C) 2.1 1.3 4.7 5.4 10.5 14.8 18.8 17.2 14.5 12.7 5.8 3
Absolute minimum temperature (°C) -2.9 -5.5 -0.7 -1.4 7.5 12.2 15.7 12.8 10.7 10.3 -2 -1.3

Siena monthly weather indicators

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daylight maximum duration (h) 9.9 11.2 12.7 14.1 15.2 15.4 15.4 14.6 13.2 11.8 10.3 9.2
Daylight mean duration (h) 9.4 10.5 11.9 13.4 14.7 15.4 15 13.9 12.5 11 9.7 9
Daylight minimum duration (h) 9 9.9 11.2 12.7 14.1 15.2 14.6 13.3 11.8 10.3 9.3 9
Sunshine mean duration (h) 6.2 7 9.7 11.1 10.4 12.3 13.3 12 10.5 8.2 6.1 6.3
Precipitation (mm) 88 33 61 70 117 127 19 52 46 169 133 48
Sunny days 16 16 13 13 7 12 21 20 21 18 11 16
Rainy days 15 12 18 17 24 18 10 11 9 13 19 15

Siena - weather forecast by months

January February March April May June July August September October November December

Best time to visit Siena:

The best time to visit Siena during the most sunny months:

  • June — 12.3(h)
  • July — 13.3(h)
  • August — 12(h)

Months with the longest average daylight duration in Siena:

  • June — 15.4(h)

The largest precipitation sum in Siena is at

  • May — 117(mm)
  • June — 127(mm)
  • October — 169(mm)
  • November — 133(mm)

Weather forecast in the closest to Siena admin centers