Barranca, Peru offers 6 beaches perfect for sunbathing, surfing, swimming, and more. Barranca is known for the ancient archaeological site Caral, the oldest civilization in the Americas. The best time to travel to Barranca, 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!