Fort Smith, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Fort Smith is known for the Fort Smith National Historic Site and the Fort Smith Museum of History. The best time to travel to Fort Smith, United States, is in late spring (May), when the average air temperature is around 70°F (21°C) and water temperature is approximately 65°F (18°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!