Campanilla, Peru offers 1 beach perfect for sunbathing, surfing, swimming, and more. Campanilla, San Martin, Peru, is known for its proximity to the Cordillera Azul National Park. The best time to travel to Campanilla, Peru, is from May to September, with average air temperatures around 77°F (25°C) and water temperatures near 73°F (23°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!