The best time to go to Alton, New Hampshire, is during the summer months, from late June to early September, for warm weather and lake activities, or in the autumn, from late September to late October, for the stunning fall foliage.Summer is ideal for those who want to experience Lake Winnipesaukee to its fullest. The weather is warm and sunny, great for swimming, boating, and enjoying the beaches. Many local businesses, restaurants, and attractions are fully operational during this period, offering a lively option. Families often find this time of year great for a holiday, with plenty of outdoor activities like mini-golf, hiking, and water sports available.Autumn transforms Alton into a picturesque destination, with the surrounding hills ablaze with vibrant colours. This season is great for couples or those seeking a peaceful retreat. Scenic drives along routes like the Lakes Region Tour offer breathtaking views, and the cooler temperatures are ideal for hiking or enjoying a cosy evening by a fireside.