The best time to visit Henderson, New York, is during the summer months, specifically from June through August, for ideal weather and full access to outdoor activities.During this period, the weather is warm and sunny, superb for enjoying Lake Ontario and its surrounding natural beauty. Temperatures typically range from the mid-70s to low 80s Fahrenheit, making it comfortable for swimming, boating, fishing, and hiking. All local businesses, attractions, and rental services are fully operational, offering a complete experience for visitors.Families will find summer particularly appealing due to the wide array of water-based activities available, from public beaches like Southwick Beach State Park to charter fishing excursions. The longer daylight hours also allow for extended enjoyment of the outdoors, making it easy to plan full days of exploration and relaxation.For couples seeking a blend of outdoor recreation and serene evenings, late spring (May) or early autumn (September) can also be a good choice.