The best time to go to Penn Yan is during the summer and fall months, from June through October, when the weather is ideal for outdoor activities and the region showcases its natural beauty.Summer, from June to August, offers warm temperatures great for enjoying Keuka Lake. You can spend your days boating, swimming, or kayaking. This season also features many local events and farmers' markets, making it a great time for families looking for a relaxed vacation with plenty of options for recreation.For couples, the fall, particularly September and October, is a beautiful time to visit. The Finger Lakes region is known for its stunning autumn foliage, and the cooler weather is great for exploring the many wineries and breweries along the Seneca and Keuka Lake Wine Trails without the larger summer crowds.