The best time to go to Harrisville, New Hampshire, is during the late spring to early autumn months, specifically from May to October.This period offers the most pleasant weather for exploring the area's natural beauty and outdoor activities. May and June bring blooming flowers and comfortable temperatures, ideal for hiking and enjoying the lakes without the peak summer crowds.For families, the summer months of July and August are perfect. The weather is warm, making it excellent for swimming, boating, and exploring the Harrisville Pond. There are often local community events and farmers' markets during this time, providing a relaxed holiday experience.Couples looking for a picturesque and peaceful getaway will particularly appreciate September and October. The autumn foliage is spectacular, transforming the landscape into a canvas of reds, oranges, and yellows.