Roberts, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Roberts, Montana, United States, is known for its proximity to the Beartooth Highway and the Absaroka-Beartooth Wilderness. The best time to travel to Roberts, United States, is during the summer months of June to August, when the average air temperature is around 70-80°F and water temperature in nearby lakes is approximately 65-75°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!