Los Chimus, Peru offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Los Chimus, Ancash, Peru, is known for the Chavin de Huantar archaeological site. The best time to travel to Los Chimus, 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!