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 days

Number of rainy days: 181 days

Look at detailed online map of Siena

* Weather data for Siena Italy is based on climate observations for 2026 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	31.0	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	3.0
Absolute minimum temperature (°C)	-2.9	-5.5	-0.7	-1.4	7.5	12.2	15.7	12.8	10.7	10.3	-2.0	-1.3

Siena monthly weather indicators

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Daylight maximum duration (h)	9.0	11.0	12.0	14.0	15.0	15.0	15.0	14.0	13.0	11.0	10.0	9.0
Daylight mean duration (h)	9.4	10.5	11.9	13.4	14.7	15.3	15.0	13.9	12.5	11.0	9.7	9.0
Daylight minimum duration (h)	9.0	9.0	11.0	12.0	14.0	15.0	14.0	13.0	11.0	10.0	9.0	8.0
Sunshine mean duration (h)	6.0	6.5	9.3	11.1	10.4	12.3	13.3	12.0	10.4	8.2	6.1	5.9
Precipitation (mm)	87	32	60	70	116	127	19	52	46	168	133	47
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
Snow days	0	0	0	0	0	0	0	0	0	0	0	0

Siena - weather forecast by months

Siena weather in january Siena weather in february Siena weather in march Siena weather in april Siena weather in may Siena weather in june Siena weather in july Siena weather in august Siena weather in september Siena weather in october Siena weather in november Siena weather in 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 — 12.0(h)

Months with the longest average daylight duration in Siena:

June — 15.3(h)

The largest precipitation sum in Siena is at

May — 116(mm)

June — 127(mm)

October — 168(mm)

November — 133(mm)

Weather forecast in the closest to Siena admin centers