Chancayllo, Peru offers 5 beaches perfect for sunbathing, surfing, swimming, and more. Chancayllo is known for the Chancay Castle, a unique architectural attraction in the region. The best time to travel to Chancayllo, 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!