Weather in Siena in May
How warm is it in Siena in May?
In May the typical daytime high in Siena is 22.5 °C on average, from 20.4 °C at the start to 24.8 °C at the end of the month.
That is 4.1 °C warmer than in April and 4.5 °C cooler than in June.
The last 10 years were 2.0 °C warmer than more than 40 years ago.
Click a day for more: afternoon and night, the usual range, records and how fast it is warming.
The average of the weather stations Bastia (173 km), Riva (288 km) and Milan (294 km); nearer ones count more.