September · Mexico
Best time to visit San Miguel de Allende in September Weather, crowds & prices
Weather in San Miguel de Allende in September
Average temperature 19°C, 71 mm of rain, about 25 days with 6+ hours of sunshine and 72% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
8.7/10
Ranked #10 of 12 months
- Avg temp
- 19°C
- Rainfall
- 71 mm
- Humidity
- 72%
- Days with 6h+ sun
- 25
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
September in San Miguel de Allende scores 8.7/10 for sightseeing and cultural travel - ranked #10 of 12. Expect around 19°C, 71 mm of rain, and roughly 25 days with 6+ hours of sunshine this month.
San Miguel de Allende's baroque churches and artist studios fill a colonial hill town in Mexico's Bajío.
September is one of the strongest months in San Miguel de Allende (10th)
September averages 19°C (66°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Rainfall runs 71 mm, so plan one flexible day in three; you still get about 25 days with 6+ hours of sunshine and 12.1 hours of daylight.
A 8.7/10 puts this among the year's best months in San Miguel de Allende (10th of 12); only April scores higher, at 9.9/10.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
Figure on low-season pricing, with crowds are light for this destination.
Frequently asked
- What is the weather like in San Miguel de Allende in September?
- In September, San Miguel de Allende averages 19°C, 71 mm of rain, and about 25 days with 6+ hours of sunshine. Its climate-comfort score is 8.7/10.
- Is September a good time to visit San Miguel de Allende?
- September earns a 8.7/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in San Miguel de Allende in September?
- Expect about 71 mm of rain in September. Average humidity is 72% and there are about 25 days with 6+ hours of sunshine.
Curated in San Miguel de Allende
Tickets & experiences
Things to do in San Miguel de Allende
San Miguel de Allende, Mexico. Live activities and tours from GetYourGuide, matched to this destination.