Waimea, United States offers 17 beaches perfect for sunbathing, surfing, swimming, and more. Waimea is known for the Parker Ranch, one of the largest cattle ranches in the United States. The best time to travel to Waimea, United States, is from May to September, 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!