Cerro Hermosa, Mexico offers 1 beach perfect for sunbathing, surfing, swimming, and more. Cerro Hermosa is known for its vibrant annual Guelaguetza festival, showcasing traditional Oaxacan music and dance. The best time to travel to Cerro Hermosa, Mexico, is from November to April, with average air temperatures around 75°F (24°C) and water temperatures near 80°F (27°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!