The best time to go to El Oro is during the dry season, which runs from October to May, offering pleasant weather for exploring.
During these months, you'll experience mild temperatures and minimal rainfall, making it ideal for outdoor activities like visiting the historic mining sites and walking through the town's charming streets. The cooler, drier air also makes for comfortable evenings, great for enjoying a meal at a local restaurant.
For those interested in local culture and festivities, visiting in November allows you to experience Día de Muertos (Day of the Dead) celebrations, which are particularly poignant in this region with its rich history. The town comes alive with altars, decorations, and traditional observances, offering a unique insight into Mexican traditions.
If you prefer slightly warmer days without the humidity of the wet season, March and April are excellent choices.