Siena Weather in October
October in Siena brings pleasant temperatures, with daytime highs of 20°C (68°F) and nights around 10°C (50°F). Quite a bit of rainfall is expected, around 110 mm (4.3 in), so pack an umbrella.
Rainfall in Siena in October
You can expect rain on roughly 12 days based on historical data, averaging 110 mm (4.3 in) for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.
Temperature in Siena in October
In October, expect pleasant temperatures in Siena, with highs of 20°C (68°F) and lows of 10°C (50°F) at night. Even when the weather is stable, mornings and evenings can still feel distinctly cool. At 10°C (50°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 October
The area enjoys a balanced 180 hours of sunlight, ensuring it's neither too overcast nor too sunny.If you prefer enjoying temperate temperatures and rain-free days, May, June and September typically offer 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 October
Min Temperature
10°C (50°F)
Max Temperature
20°C (68°F)
Chance of Rain
39%
Precipitation
110 mm (4.3 in)
Rainy days
12 days
Sunshine
180 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Siena typically drop from around 23°C (73°F) at the start of October to approximately 19°C (66°F) by the end. Nights are cool, with lows typically ranging from 10°C (50°F) to 14°C (57°F).
Average temperatures in October
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 October
Historical weather for Siena in October
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 October
Based on weather observations in Siena between 1976 and 2025, these are the recorded extremes during October.
- The hottest October day on record in Siena reached 30°C (86°F) (October 2, 2023).
- The coldest October day was on October 22, 2007, with a maximum of 8°C (46°F).
- Siena registered its coldest October night on October 30, 2012, with temperatures dropping to 0°C (32°F).
Best Places in Italy in October
Find out more about the weather in Italy and which places have the best travel conditions in this month. See all of Italy in October →
perfect weather
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What to Wear in Siena in October
For Siena in October, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Siena in October
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.
