The best time to visit Alexandria, New Hampshire, is during the summer months, from June to August, for warm weather activities, or in the fall, from September to October, for stunning foliage.Summer in Alexandria offers ideal conditions for enjoying the region's natural beauty. The weather is generally warm and pleasant, superb for swimming and boating on Newfound Lake, hiking the local trails, or exploring the surrounding White Mountains. This season is particularly well-suited for families looking for outdoor adventures and water-based recreation.For couples or those seeking a beautiful, scenic getaway, the fall season is unmatched. The landscape transforms with vibrant red, orange, and gold foliage, making it a prime time for scenic drives, photography, and enjoying the crisp New England air.