Magdalena de Cao, Peru offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Magdalena de Cao is known for the El Brujo Archaeological Complex and the Lady of Cao mummy. The best time to travel to Magdalena de Cao, Peru, is from December to March, with average air temperatures around 75°F (24°C) and water temperatures near 70°F (21°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!