Zug, Switzerland offers 5 beaches perfect for sunbathing, surfing, swimming, and more. Zug, Zug, Switzerland, is known for its picturesque Lake Zug and the historic Zytturm clock tower. The best time to travel to Zug, Switzerland, is from June to August, when the average air temperature is around 20-25°C (68-77°F) and the water temperature in Lake Zug is approximately 20°C (68°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!