Sullivans Landing, United States offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Sullivans Landing is known for the Great Lakes Maritime Museum and the historic Sullivans Lighthouse. The best time to travel to Sullivans Landing, United States, is during late spring to early summer 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!