The best time to visit Newbury, New Hampshire, is during the summer months, from June to August, for warm-weather activities, or in the fall, from late September to mid-October, for stunning foliage.Summer in Newbury offers ideal conditions for enjoying Lake Sunapee, with average temperatures in the 70s°F (20s°C). This is superb for swimming, boating, and hiking the trails around Mount Sunapee. Families with children will find this season particularly appealing, as many lakeside resorts offer a full range of outdoor activities and watersports.For travelers who appreciate natural beauty and cooler temperatures, the fall foliage season is spectacular. The hillsides surrounding Lake Sunapee transform into a tapestry of red, orange, and gold, making it an excellent time for scenic drives, photography, and exploring local apple orchards.