Siena weather in November
November in Siena: cool, rainy, with clean air — a good time to visit.
#10 of 12 months in Siena · #609 of 897 destinations to visit in November · comfort 68/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
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Siena climate normals — November
| Daytime high | 14°C / 57°F | 🙂 cool |
|---|---|---|
| Nighttime low | 7°C / 44°F | |
| Rainfall | 147 mm / 5.8 in | 🌧 rainy |
| Rainy days | 15 days | |
| Humidity | 83% | 💦 very humid |
| Dew point | 7°C / 45°F | |
| Sunshine | 6 h/day | |
| Daylight | 9.7 h | |
| Wind | 14 km/h / 9 mph | |
| Air quality (US AQI) | 35 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Siena in November — FAQ
- Is November a good time to visit Siena?
- November in Siena: cool, rainy, with clean air — a good time to visit. It ranks #10 of 12 months for Siena on SeasonMap's comfort score (68/100).
- What is the weather like in Siena in November?
- In November, Siena averages a daily high of 14°C and a low of 6.6°C, with about 146.7 mm of rain over roughly 14.8 rainy days.
- What is the air quality in Siena in November?
- Siena has a mean US Air Quality Index of about 35 in November.