Saint Marys, United States offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Saint Marys is known for being the gateway to Cumberland Island National Seashore. The best time to travel to Saint Marys, United States, is in late spring (May), when the average air temperature is around 75°F (24°C) and the water temperature is approximately 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!
