The best time to visit Clayton, New York, is during the summer months, particularly from June to August, when the weather is warm and all the attractions are fully open.During this period, the Thousand Islands region truly comes to life. You'll find lovely weather for boat tours to places like Boldt Castle and Singer Castle, and it's great for enjoying water activities such as fishing, kayaking, and paddleboarding on the St. Lawrence River. Many of the local shops, restaurants, and seasonal events are in full swing, offering a complete experience for visitors.Early autumn, specifically September, also offers a wonderful experience with cooler temperatures and fewer crowds. The changing leaves create a beautiful backdrop for exploring the area, and many attractions remain open, providing a more peaceful visit while still enjoying the natural beauty.