The best time to go to Clayton is during the summer months, from June to August, when the weather is warm and all attractions are fully operational.During this period, the Thousand Islands region truly comes alive, offering ideal conditions for boating, fishing, and exploring the St. Lawrence River. Temperatures are pleasant for outdoor activities, and most shops, restaurants, and tour operators are open daily. This is a great time for families to visit, as many family-friendly events and boat tours operate frequently.Early autumn, specifically September, also offers a pleasant experience with cooler temperatures and fewer crowds. The fall foliage along the riverbanks is quite scenic, making it a good time for couples seeking a more tranquil visit with opportunities for scenic drives and quiet walks.