Mollendo, Peru offers 6 beaches perfect for sunbathing, surfing, swimming, and more. Mollendo is known for its beautiful beaches and the historic Mollendo Pier. The best time to travel to Mollendo, Peru, is from December to March, when the average air temperature is around 75°F (24°C) and the water temperature is approximately 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!