Ampanu, Peru offers 6 beaches perfect for sunbathing, surfing, swimming, and more. Ampanu, Ancash, Peru, is known for its proximity to the Huascaran National Park and the Cordillera Blanca mountain range. The best time to travel to Ampanu, Peru, is from May to September, with average air temperatures around 70°F (21°C) and water temperatures near 68°F (20°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!