The best time to go to Perth, Ontario is during the summer months, from June to August, or in the early fall, specifically September and early October.Summer offers the warmest weather, with average daily temperatures around 20-25°C (68-77°F), making it ideal for outdoor activities. The Tay River, which runs through the town, is superb for kayaking, canoeing, and boat tours. The Perth Farmers' Market is in full swing on Saturdays, offering local produce and crafts, and many of the town's festivals, like the popular Stewart Park Music Festival, take place during this season.Early fall provides comfortable, cooler temperatures, typically ranging from 10-20°C (50-68°F), and the stunning autumn foliage begins to emerge, especially along the scenic roads leading into town. This period is excellent for walking tours of Perth's historic architecture or enjoying the quieter pace before winter.