Europe · City travel
Best time to visit Siena
Mid May–Late May, Early Sep, Late Sep–Early Oct is the best time to visit. During this period, the average daytime high is 24.4°C, with 2.9 rainy days per 10 days.
View on the globe
Season calendar
AvoidOff-seasonFairOkayGoodGreatBest
Japan MOFA travel advice
No Japan MOFA travel advisory is in effect for this destination.
Climate and season score by month
| Month | Level | Daytime high | Rainy days (per 10 days) | Cloud cover |
|---|---|---|---|---|
| January | Avoid | 8.9°C | 3.0 | 67.1% |
| February | Off-season | 10.4°C | 3.0 | 63.0% |
| March | Okay | 13.8°C | 2.8 | 61.7% |
| April | Great | 17.6°C | 3.3 | 63.3% |
| May | Best | 22.5°C | 3.1 | 61.5% |
| June | Great | 28.7°C | 2.3 | 46.5% |
| July | Good | 32.2°C | 1.6 | 33.4% |
| August | Good | 32.2°C | 1.9 | 37.2% |
| September | Best | 26.3°C | 3.1 | 50.6% |
| October | Great | 20.8°C | 3.3 | 60.5% |
| November | Okay | 14.2°C | 4.0 | 68.4% |
| December | Off-season | 10.0°C | 3.7 | 65.7% |
Questions and answers
- When is the best time to visit Siena?
- Mid May–Late May, Early Sep, Late Sep–Early Oct. During this period, the average daytime high is 24.4°C, with 2.9 rainy days per 10 days.
- When should I avoid visiting Siena?
- Mid Jan–Early Feb is the least favorable time of year. Then, the average daytime high is 9.1°C, with 2.9 rainy days per 10 days.
- What is the rainiest time of year in Siena?
- November, December, with about 4.0 rainy days per 10 days at the peak.
How the score works
The season score is a relative 0–100 measure of how suitable each time of year is for travel at this destination, grouped into seven levels. It combines climate-normal trends in temperature, rain, cloud cover, and other conditions.
Data: Copernicus ERA5, NASA POWER, NOAA GHCN-Daily, OISST, IBTrACS, and Natural Earth.
These are historical climate-normal trends, not a weather forecast.