The best time to visit Interlaken, New York, is during the summer months, from June to August, when the weather is warm and conducive to outdoor activities and enjoying Seneca Lake.During these months, the average temperatures range from the mid-70s to low 80s Fahrenheit, making it ideal for swimming, boating, and exploring the Finger Lakes region. Many local vineyards and farms offer tours and tastings, and the town itself has a relaxed, welcoming feel. Couples and families will find plenty to do, from hiking trails to watersports on Seneca Lake.The shoulder seasons, May and September, also offer pleasant weather and fewer crowds. Temperatures are milder, typically in the 60s and 70s, making it a good time for those who prefer a quieter visit while still being able to enjoy the natural beauty of the area.