The best time to visit San Lucas, Michoacán, is generally during the dry season, which runs from November to May.
During these months, you'll experience pleasant, warm weather with minimal rainfall, making it ideal for exploring the town and surrounding natural beauty. Days are typically sunny and clear, great for outdoor activities like visiting the Tepalcatepec River or the nearby archaeological sites.
For those looking to avoid the peak tourist crowds and still enjoy good weather, the shoulder months of November and May are particularly good. The temperatures are comfortable, and you'll find the area less busy, which can lead to a more relaxed and authentic experience.
The rainy season, from June to October, brings higher humidity and more frequent, though often brief, afternoon showers.