Bruneau, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Bruneau, Idaho, United States, is known for the Bruneau Dunes State Park and the Bruneau Canyon Overlook. The best time to travel to Bruneau, United States, is in late spring or early fall when the average air temperature is around 70°F (21°C) and water temperatures in nearby lakes and rivers are typically cooler, around 50-60°F (10-15°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!