Smith River, United States offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Smith River is known for the Smith River National Recreation Area and its proximity to the Redwood National and State Parks. The best time to travel to Smith River, United States, is during the summer months of June to August, when the average air temperature is around 65-75°F and the water temperature is approximately 55-65°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!