The best time to go to Rutherglen, Ontario, is during the summer months, from June to August, when the weather is warm and ideal for outdoor activities.During this period, visitors can fully enjoy the natural beauty of the region, especially around Lake Nosbonsing. The lake is a central feature, offering opportunities for fishing, boating, and swimming. The surrounding area is also popular for hiking and exploring the local trails, making it superb for active travelers and families.Autumn, particularly September and October, also offers a pleasant experience. The fall foliage provides picturesque scenery, and the cooler temperatures are comfortable for outdoor exploration without the summer crowds.