LaCygne, United States offers 2 beaches perfect for sunbathing, surfing, swimming, and more. LaCygne, Kansas, United States, is known for the La Cygne Lake and the nearby Marais des Cygnes National Wildlife Refuge. The best time to travel to LaCygne, United States, is in late spring or early fall when the average air temperature is around 70°F, and the water temperature in nearby lakes is approximately 65°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!