Red Rock, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Dunbar is known for the John Muir Birthplace, Dunbar Castle, and the Dunbar Golf Club. The best time to visit Red Rock, United States, is in the spring (March to May) when the average air temperature is around 70°F (21°C) and water temperatures in nearby lakes or rivers can be 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!