In September, San Miguel de Allende typically sees daytime highs of 23.8°C and overnight lows around 10.9°C. Compared to the annual average high of 24.2°C, September runs -0.4°C.
September in San Miguel de Allende averages a daytime high of 23.8°C and an overnight low of 10.9°C.
September runs -0.4°C compared to San Miguel de Allende's annual average high of 24.2°C, ranking #7 of 12 months by warmth.
Plan for daytime highs near 23.8°C and cooler evenings around 10.9°C.