Siena Weather in July
During July, Siena experiences very high daytime temperatures of 30°C (86°F) and cooler nights around 18°C (64°F). As the driest month of the year, rainfall is at its lowest.
Rainfall in Siena in July
With the lowest rainfall figures of the year, conditions are ideal for exploring the outdoors. Rain is expected on roughly 6 days, totalling around 33 mm (1.3 in) for the month. The odd shower may pass through, but it usually doesn't amount to much. A largely dry month overall.
Temperature in Siena in July
Daytime highs in Siena in July reach 30°C (86°F), with nights around 18°C (64°F). Indoor breaks or shaded spots can make the warmer part of the day much more comfortable. At 18°C (64°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.
Sunshine in Siena in July
Expect a lot of sunshine this month, with about 350 hours of sun. These sunny conditions add to the overall experience.For Siena itself, May, June and September generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Italy, check out our Siena's climate page.
Siena Temperature in July
Min Temperature
18°C (64°F)
Max Temperature
30°C (86°F)
Chance of Rain
21%
Precipitation
33 mm (1.3 in)
Rainy days
6 days
Sunshine
350 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Siena typically stay consistent throughout July, with daily highs averaging around 30°C (86°F). Nights are pleasant, with lows typically ranging from 17°C (63°F) to 19°C (66°F).
Average temperatures in July
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in July
Historical weather for Siena in July
Browse day-by-day weather records for Siena spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Siena historical weather extremes in July
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Siena.
- On July 26, 1983, temperatures climbed to 38°C (100°F), marking the warmest July day on record.
- The lowest daytime temperature in July was 20°C (68°F), recorded on July 12, 1993.
- Siena registered its coldest July night on July 1, 1991, with temperatures dropping to 8°C (46°F).
Best Places in Italy in July
Find out more about the weather in Italy and which places have the best travel conditions in this month. See all of Italy in July →
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tolerable
unpleasant
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What to Wear in Siena in July
Warm but pleasant conditions in Siena in July. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Light rain is possible, so consider bringing a small umbrella or rain jacket. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Siena in July
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Italy, check out our Siena's climate page.
See the full Siena climate overview or explore weather in Italy.
