Weather in Siena for October 2026
Until now, October 2026 in Siena has been nearly identical to the historical average, with a temperature of 21.8 °C (showing only a slight deviation of 0.5 °C).
Expect cooler weather in the next days in Siena with the forecast suggesting a temperature of 18.4 °C, lower than the historical average.
In general, the average temperature in Siena at the beginning of October is 22.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 19 °C by the end of October.
The climate of Siena in October is notably wet, with an average of 12 rainy days, and a total of 97.5 mm of precipitation.
Is October a good time to visit Siena? check out the best time to travel to Siena page.
✨ Is October a good time to visit Siena? – Ask the AI Weatherman
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Siena Weather October
Temperatures trend during October in Siena
October weather in Siena day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Oct. |  Light rain shower | 24° /13° | 1.2 mm | 4.8 | |
| 2 Oct. | Patchy rain possible | 23° /13° | 2 mm | 4.7 | |
| 3 Oct. |  Light rain | 22° /11° | 6.1 mm | 4.7 | |
| 4 Oct. |  Partly cloudy | 22° /10° | 0.8 mm | 4.6 | |
| 5 Oct. | Patchy rain possible | 21° /11° | 2.1 mm | 4 | |
| 6 Oct. |  Sunny | 22° /10° | 0.1 mm | 4.4 | |
| 7 Oct. | Light rain | 22° /12° | 3.8 mm | 4.3 | |
| 8 Oct. | Light rain | 23° /12° | 8.8 mm | 4.2 | |
| 9 Oct. | Patchy rain possible | 23° /13° | 1.7 mm | 4.1 | |
| 10 Oct. | Patchy rain possible | 23° /12° | 1.2 mm | 4.1 | |
| 11 Oct. | Patchy rain possible | 24° /12° | 0.1 mm | 4 | |
| 12 Oct. | Sunny | 23° /11° | 0.2 mm | 3.9 | |
| 13 Oct. | Sunny | 22° /10° | 0 mm | 3.8 | |
| 14 Oct. | Patchy rain possible | 23° /11° | 0 mm | 3.8 | |
| 15 Oct. | Patchy rain possible | 24° /11° | 0 mm | 3.7 | |
| 16 Oct. |  Overcast | 20° /12° | 0.6 mm | 3.6 | |
| 17 Oct. | Light rain | 19° /11° | 2.7 mm | 3 | |
| 18 Oct. | Light drizzle | 19° /10° | 1.4 mm | 3.5 | |
| 19 Oct. | Light rain | 20° /12° | 4.2 mm | 3.4 | |
| 20 Oct. | Light rain | 21° /12° | 5.2 mm | 3.3 | |
| 21 Oct. |  Patchy light rain with thunder | 18° /13° | 9.4 mm | 3 | |
| 22 Oct. | Light rain | 20° /12° | 2.6 mm | 3.2 | |
| 23 Oct. | Light rain | 19° /12° | 8.4 mm | 3.1 | |
| 24 Oct. | Light rain | 19° /12° | 4.9 mm | 3 | |
| 25 Oct. | Light rain | 18° /11° | 6.7 mm | 3 | |
| 26 Oct. | Light rain | 18° /12° | 3.7 mm | 2.9 | |
| 27 Oct. | Sunny | 20° /8° | 0 mm | 3 | |
| 28 Oct. | Overcast | 18° /7° | 0 mm | 2.6 | |
| 29 Oct. | Sunny | 19° /7° | 0 mm | 2.6 | |
| 30 Oct. | Sunny | 17° /7° | 0 mm | 5 | |
| 31 Oct. | Sunny | 18° /6° | 0 mm | 5 | |
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Siena weather in October vs September vs November
| September | October | November | |
|---|---|---|---|
| Weather | Sunny | Patchy rain possible | Patchy rain possible |
| Temperatures | 27°/14° | 21°/11° | 14°/6° |
| Rainfall | 83 mm | 97 mm | 59 mm |
| Wind | 14.7 km/h | 13.5 km/h | 14.5 km/h |
| Humidity | 65% | 75% | 77% |
| Rainy days | 7 days | 12 days | 10 days |
| Dry days | 23 days | 19 days | 20 days |
Planning a trip to Siena? Discover the best time to visit
Siena in October - FAQ
What are the expected maximum and minimum temperatures in Siena during October?
How much rainfall should be expected in Siena during October?
What are the typical wind conditions in Siena during October?
October rainfall patterns in Siena
UV exposure in Siena during October
What to pack to Siena in October?
Mild & changeable · highs around 21 °C, frequent showers
As you prepare for your trip to Siena in October, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Siena, during October, is comfortable and enjoyable, regardless of the weather conditions.
🧥 Clothing
👟 Footwear
🎒 Accessories
Where is Siena?Get accurate weather forecasts for Siena, located at latitude 43.318 and longitude 11.331. Stay updated with localized weather information tailored for Siena.