Campamento Tres Hermanas, Peru offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Campamento Tres Hermanas, Arequipa, Peru, is known for its proximity to the Colca Canyon, one of the world's deepest canyons and a popular spot for trekking and observing Andean condors. The best time to travel to Campamento Tres Hermanas, Peru, is from May to September, with average air temperatures around 25°C (77°F) and water temperatures near 22°C (72°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!