Siena, ItalyQuick decision
When to visit Siena?
🌞 Best time overall
June
🌡️ Optimal temperature
16°C–29°C in June
🌧 Least rain
22% rainy days in June
🌧 Wettest month
December (34%)
📅 Best score
9.0/10
By trip type
Best time by type of trip
Palio di SienaJul 2 & Aug 16 — medieval horse race, Piazza del Campo.
Piazza del CampoYear-round — shell-shaped square, Palazzo Pubblico, Torre del Mangia.
Chianti ClassicoSep–Oct — harvest, Chianti route through vineyards and hills.
Val d'OrciaMay–Jun or Sep — UNESCO hills, Pienza, Montalcino, Tuscan cypresses.
Monthly climate data
Siena weather month by month
| Month | Min °C | Max °C | Rainy days (%) | Precip. mm/d | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌫️ January | 2°C | 10°C | 29% | 1.7 | 7.4h | 4.8/10 |
| ⛅ February | 3°C | 13°C | 33% | 2.7 | 8.8h | 5.7/10 |
| ⛅ March | 4°C | 15°C | 30% | 2.4 | 10.8h | 7.0/10 |
| 🌤️ April | 7°C | 19°C | 32% | 2.4 | 12.2h | 7.4/10 |
| 🌤️ May | 11°C | 22°C | 42% | 3.0 | 12.9h | 7.7/10 |
| ☀️ June | 16°C | 29°C | 22% | 1.5 | 14.1h | 9.0/10 |
| ☀️ July | 19°C | 32°C | 17% | 0.8 | 14.3h | 8.5/10 |
| ☀️ August | 19°C | 32°C | 19% | 1.2 | 13.0h | 8.2/10 |
| 🌤️ September | 15°C | 26°C | 28% | 2.8 | 11.7h | 8.3/10 |
| 🌤️ October | 11°C | 21°C | 27% | 3.4 | 9.8h | 7.5/10 |
| ⛅ November | 6°C | 15°C | 39% | 3.8 | 8.0h | 5.6/10 |
| 🌫️ December | 3°C | 11°C | 34% | 2.9 | 7.0h | 4.6/10 |
Ideal
Fair
Challenging climate
Source: Open-Meteo · 10 years
Seasonal breakdown
What to expect each season
🌸 Spring (Mar–May) — Good time
Average 19°C, 35% rainy days, 12.0h sunshine/day. Score: 7.4/10.
☀️ Summer (Jun–Aug) — Excellent time
Average 31°C, 19% rainy days, 13.8h sunshine/day. Score: 8.6/10.
🍂 Autumn (Sep–Nov) — Good time
Average 21°C, 31% rainy days, 9.8h sunshine/day. Score: 7.1/10.
❄️ Winter (Dec–Feb) — Challenging climate
Average 11°C, 32% rainy days, 7.7h sunshine/day. Score: 5.0/10.
Accommodation
Find a place to stay in Siena
Check availability during the recommended period
Tip : March, April offer a good weather/price balance — decent score with fewer crowds.
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Activities and tours in Siena
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Flights
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Monthly weather
Detailed weather by month
FAQ
Frequently asked questions
June is ideal with 22% rainy days and 29°C.
December is the wettest month with 34% rainy days.
Yes, June is the best month with an average of 29°C.
In winter, the average score is 5.0/10. Difficult period — prefer the peak season.
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