Mill Valley, United States offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Mill Valley is known for Muir Woods National Monument and Mount Tamalpais. The best time to visit Mill Valley is from June to September, with average air temperatures around 70-80°F and water temperatures in nearby coastal areas around 55-60°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!
