Fort McAllister, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Fort McAllister, Georgia, United States, is known for Fort McAllister State Park, which features a well-preserved Confederate earthwork fortification from the Civil War. The best time to travel to Fort McAllister, United States, is in late spring (April to June) when the average air temperature is around 70-80°F and the water temperature is approximately 70°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!