The best time to go to Sutton, Ontario, depends entirely on what you'd like to experience, as it offers distinct charms in both summer and winter.For those seeking warm weather activities, the summer months from June to August are ideal. The weather is generally pleasant, superb for enjoying Lake Simcoe, which is a major draw for the area. You'll find opportunities for swimming, boating, and fishing.Winter, from December to March, transforms Sutton into a snowy retreat. This is the prime time for ice fishing on Lake Simcoe, which is a very popular activity.