The best time to visit Perth, Ontario, is during the summer months, from June to August, or in the early autumn, specifically September and early October.Summer offers the warmest weather, ideal for enjoying the outdoors and the many events in and around town. You'll find the Tay River is great for kayaking or canoeing, and the Big Rideau Lake, just a short drive away, is bustling with boating and swimming activities. The annual Perth Festival of the Arts often takes place in July, bringing a lovely cultural buzz to the town.Early autumn is also a fantastic time for those who appreciate cooler temperatures and beautiful scenery. The foliage around Perth and the Rideau Canal system turns into a stunning display of reds, oranges, and yellows. It's a great time for leisurely walks along the Tay River or exploring the local trails.