Atlantic Beach, United States offers 35 beaches perfect for sunbathing, surfing, swimming, and more. Atlantic Beach is known for Fort Macon State Park and the Crystal Coast. The best time to travel to Atlantic Beach, United States, is from late spring to early fall, with average air temperatures ranging from 70°F to 85°F and water temperatures between 70°F and 80°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!