Carthage, United States offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Carthage, Tennessee, United States, is known for its historical significance and proximity to the scenic Cordell Hull Lake. The best time to travel to Carthage, United States, is in late spring (May), when the average air temperature is around 70°F (21°C) and water temperature is not applicable as it is not a coastal city. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!