Shelter Cove, United States offers 5 beaches perfect for sunbathing, surfing, swimming, and more. Shelter Cove, California, United States, is known for the Lost Coast, Black Sands Beach, and the Cape Mendocino Lighthouse. The best time to travel to Shelter Cove, United States, is from June to September, with average air temperatures around 60-70°F and water temperatures around 50-60°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!