El Rosario de Abajo, Mexico offers 1 beach perfect for sunbathing, surfing, swimming, and more. El Rosario de Abajo is known for its proximity to the Sierra de San Francisco rock art sites. The best time to travel to El Rosario de Abajo, Mexico, is from November to April, with average air temperatures around 70-80°F (21-27°C) and water temperatures near 75°F (24°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!