Kussnacht, Switzerland offers 1 beach perfect for sunbathing, surfing, swimming, and more. Kussnacht is known for the annual Klausjagen festival, a traditional St. Nicholas procession. The best time to travel to Kussnacht, Switzerland, is from June to August, with average air temperatures around 20-25°C (68-77°F) and water temperatures in Lake Lucerne around 18-22°C (64-72°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!