Coville, United States offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Coville, Washington, United States, is known for the Colville National Forest and the nearby Lake Roosevelt National Recreation Area. The best time to travel to Colville, United States, is in late spring or early fall when the average air temperature is around 60-70°F, and water temperatures in nearby lakes are approximately 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!