Coalville, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Coalville, Utah, United States, is known for its proximity to outdoor recreational activities such as hiking, fishing, and its scenic landscapes. The best time to travel to Coalville, United States, is during the summer months of June to August, when the average air temperature is around 70-85°F and water temperatures in nearby reservoirs are typically 65-75°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!