The best time to visit Valparaíso, Zacatecas, Mexico, is during the dry season, which runs from October to May.
During these months, you'll experience pleasant, sunny weather with comfortable temperatures, making it ideal for exploring the town and surrounding areas. This period avoids the heavier rainfall of the summer months, ensuring your outdoor activities and sightseeing are uninterrupted.
For travelers who prefer slightly cooler temperatures and fewer crowds, the shoulder months of October, November, April, and May are particularly appealing. The weather is still excellent, and you can often find better value on accommodations.
If you're interested in local festivities, plan your trip around specific cultural events that might occur outside the peak dry season, though you should be prepared for potential rain.