Siena weather in July
Temperature, rain and sunshine in July: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in July
Excellent
Best time to visit: May – September
What is the weather like in Siena in July?
In July, Siena is hot: daytime highs average 29 °C, and nights cool down to about 18 °C. With around 10 hours of sunshine a day, there is plenty of sun. Rain falls on about 5 days, adding up to 31 mm. On about 14 days the thermometer climbs to 30 °C or more. All in all, July is an excellent month for a holiday in Siena.
July compared
How the weather changes from June to August. Tap a month to open it.
More details for July
- Daylight
- 15 h 7 min05:47 – 20:54
- UV index
- 9 · very highclear sky, noon (estimate)All months
- Muggy days
- 1 daydew point 18 °C or moreAll months
- Wind
- 14 km/haverage daily peakAll months
- Cloud cover
- 26 %on averageAll months
- Hot days
- 14 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC+2Europe/Rome
How the score comes together
- Temperatureweight 50 %71 %
- Sunshineweight 20 %100 %
- Few rainy daysweight 30 %92 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in July
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
Siena in July: quick answers
Is Siena hot in July?
Yes. In July, Siena is hot: daytime highs average 29 °C and nights stay around 18 °C. On about 14 days the thermometer climbs to 30 °C or more.
Does it rain much in Siena in July?
Rain falls on about 5 days, adding up to 31 mm.
Siena month by month
The whole year in SienaAll destinations: ItalyWhere to go in July
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences