Saint George Island, United States offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Saint George Island is known for its pristine beaches, the Saint George Island State Park, and the Cape Saint George Lighthouse. The best time to travel to Saint George Island, United States, is from April to June, with average air temperatures around 75°F (24°C) and water temperatures near 70°F (21°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!