Saint Simons, United States offers 20 beaches perfect for sunbathing, surfing, swimming, and more. Saint Simons, Georgia, United States, is known for its historic lighthouse, the St. Simons Island Lighthouse Museum, and the picturesque Christ Church. The best time to travel to Saint Simons, United States, is from March to May, when the average air temperature is around 70-80°F and the water temperature is approximately 65-75°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!