Wainaku, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Wainaku is known for its proximity to the Hawaii Volcanoes National Park and the Mauna Kea Observatories. The best time to travel to Wainaku, United States, is from April to October, with average air temperatures around 75°F (24°C) and water temperatures near 77°F (25°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!
