Cerro Hermoso, Mexico offers 1 beach perfect for sunbathing, surfing, swimming, and more. Cerro Hermoso is known for its stunning views of the Sierra Madre del Sur and its proximity to the ancient Zapotec ruins of Monte Alban. The best time to travel to Cerro Hermoso, 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!