The best time to go to Sur, Graubünden, Switzerland, depends on whether you're seeking winter sports or summer outdoor activities.For those interested in skiing, snowboarding, or other winter sports, the prime time to visit is from December to March. During these months, Sur and the surrounding Engadin valley are blanketed in snow, offering excellent conditions for the slopes. You'll find a lively option with plenty of après-ski options and events.If you prefer hiking, mountain biking, or enjoying the alpine scenery without snow, the summer months from June to September are ideal. The weather is generally warm and sunny, superb for exploring the extensive network of trails. The Engadin valley is particularly beautiful at this time, with wildflowers blooming and crystal-clear mountain lakes.