Matlock, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Matlock, Washington, United States, is known for its proximity to the Olympic National Forest and the scenic beauty of the surrounding Pacific Northwest region. The best time to travel to Matlock, United States, is in late spring (May), when the average air temperature is around 70°F (21°C) and water temperature is approximately 60°F (16°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!