Puako, United States offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Puako, Hawaii, United States, is known for its Puako Petroglyph Archaeological Preserve and vibrant coral reefs. The best time to travel to Puako, United States, is from December to April, with average air temperatures around 75-85°F and water temperatures about 75-80°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!