Nyon, Switzerland offers 1 beach perfect for sunbathing, surfing, swimming, and more. Nyon is known for its annual Paléo Festival, the Roman Museum, and the Château de Nyon. The best time to travel to Nyon, 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 Geneva 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!