A. Mackinac Island is beautiful any season of the year. During the winter travel to the island is limited; check the the ferries to see when they are running. The Turtle Trek in February; Mackinac Island Lilac Festival in June; the Fudge festival in August and other island events bring visitors throughout the year. In the summer months, the island is the warmest and its a perfect time for easy hiking and biking.In the autumn months, the fall foliage is spectacular with blazing red and yellow leaves against the bright blue backdrop of sky and sparkling Lake Huron.