Siena Monthly Climate Averages

Siena is situated in humid subtropical zone which is known for warm weather during summer time with high humidity and soft and cool winter with short rainfalls.

To help you choose the best time to travel, you can find climate data below on the weather in Siena .


Month	t°C day	t°C night	mm rain	daylight

January	+8	+2	65	9.9h
February	+9.1	+2.3	64	11h
March	+11.9	+4.2	61	12.5h
April	+16	+7.3	67	14h
May	+20.4	+10.5	55	15.3h
June	+24.6	+14.1	58	15.9h
July	+27.9	+16.6	31	15.6h
August	+27.4	+16.6	51	14.4h
September	+23.4	+14.1	56	12.9h
October	+18	+10	93	11.5h
November	+12.5	+6.6	78	10.2h
December	+9	+3.5	71	9.6h

Best places

Best time with the soft weather for the sightseeing and long walks in Siena are May, June, September, October.

Temperature in Siena

The table shows that the hottest months in Siena are July and August, during which the average daytime temperature reaches +27.9°C and the nighttime temperature falls to +16.6°C.

The coldest months are January and December, when the daily average temperature falls to +8°C, and drops to +2°C during the night.

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