San Miguel de Allende in June

October through April offers perfect weather. Days hit 75-80°F, nights cool down to the 50s. This is peak season, so book hotels early and expect higher prices. December and January bring the most crowds, especially around Christmas and New Year's. May through September is rainy season. Afternoon thunderstorms are common, but mornings usually stay clear. Hotels drop their rates by 30-40%, and you'll have the town more to yourself. Just bring a light rain jacket. Special events change the entire vibe. Jazz Festival in November fills every venue with music. Día de los Muertos in early November transforms the cemeteries into candlelit celebrations. Book months ahead for these periods. Avoid Easter week unless you enjoy crowds. The town population doubles with Mexican tourists, and everything gets more expensive. But if you want to see San Miguel at its most Mexican, this is the time.