The best time to go to Lanslevillard depends on whether you're seeking winter sports or summer outdoor activities.For skiing and snowboarding, the prime time to visit is from December to April. During these months, the slopes of Val Cenis, which Lanslevillard is a part of, are typically covered with reliable snow, and all lifts and facilities are operational. The Christmas and New Year holidays, as well as February, are particularly popular and can be quite busy.If you're interested in hiking, mountain biking, or exploring the Vanoise National Park, the ideal time to visit is from June to September. The weather is generally warm and sunny, and the mountain trails are clear of snow.