Garden Valley, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Garden Valley, Idaho, United States, is known for its natural hot springs and outdoor recreational activities. The best time to travel to Garden Valley, United States, is during the summer months of June to August, when the average air temperature is around 75°F (24°C) and the water temperature in nearby rivers is approximately 60°F (16°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!