San Miguel de Allende · AutumnSan Miguel de Allende weather in September
Should you visit San Miguel de Allende in September?
✅ Yes if: you want good weather with lower prices than peak season.
❌ No if: you need guaranteed perfect weather — some mixed days are possible.
Our take: September in San Miguel de Allende brings delightful mild afternoons around 24°C that cool to refreshing evenings at 14°C—perfect for wandering colonial streets without overheating. Expect frequent afternoon showers (that 40% rain keeps the town lush and vibrant), so pack layers and a light jacket. You'll still catch plenty of sunshine between showers, and fewer crowds mean you get the authentic charm of this artistic town at its best.
San Miguel de Allende in September by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ✅ Good
- 🏖️ Beach / swimming : — No sea access
- 💰 💰 Budget : ✅ Low season
What to expect in September
Autumn in San Miguel de Allende is often underrated: 24°F, golden light and declining crowds. An interesting window. Expect rain on 40% of days — a light raincoat in the bag is recommended. A good balance between weather and crowds, even if March (9.6/10) remains theoretically better.
All months for San Miguel de Allende
Month-by-month comparison
| Month | Min °F | Max °F | Rain % | Precip in | Sun h/d | Score | Ski score 🎿 |
|---|---|---|---|---|---|---|---|
| 🌤️ January | 46°F | 72°F | 5% | 0.2in | 9.8h | 9.0/10 | 4.7/10 |
| ☀️ February | 48°F | 77°F | 4% | 0.2in | 11.6h | 9.5/10 | 4.8/10 |
| ☀️ March | 52°F | 81°F | 10% | 0.7in | 11.1h | 9.6/10 | 4.6/10 |
| ☀️ April | 57°F | 84°F | 10% | 0.6in | 12.0h | 9.4/10 | 4.8/10 |
| 🌤️ May | 57°F | 84°F | 25% | 1.7in | 11.8h | 8.8/10 | 4.3/10 |
| 🌤️ June | 57°F | 79°F | 42% | 4.4in | 11.4h | 8.2/10 | 3.8/10 |
| 🌤️ July | 57°F | 77°F | 49% | 3.7in | 11.1h | 7.9/10 | 3.6/10 |
| 🌤️ August | 57°F | 77°F | 48% | 4.4in | 10.7h | 7.9/10 | 3.5/10 |
| 🌤️ September | 57°F | 75°F | 40% | 4.1in | 10.4h | 8.1/10 | 3.8/10 |
| 🌤️ October | 55°F | 75°F | 24% | 1.8in | 9.8h | 8.6/10 | 4.0/10 |
| 🌤️ November | 50°F | 73°F | 9% | 0.6in | 10.1h | 9.0/10 | 4.6/10 |
| 🌤️ December | 48°F | 72°F | 5% | 0.4in | 9.7h | 9.0/10 | 4.7/10 |
September vs March (best month)
The best month is March (score 9.6/10). Difference:
- 🌡️ Max temperature : +3°F
- 🌧 Rainy days : -30%
- ☀️ Sunshine : +0.7h/day
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