The best time to visit Charlestown, New Hampshire is during the summer months, particularly from June to September, when the weather is warm and conducive to outdoor activities.During this period, the average daily temperatures range from a pleasant 20°C to 27°C, making it ideal for exploring the town's natural surroundings and historical sites. The Connecticut River, which borders Charlestown, becomes a popular spot for kayaking, fishing, and boating.Couples often find this time especially appealing for romantic getaways. You can enjoy scenic drives along Route 12, visit local farms, or take leisurely walks through the town's historic district, which features well-preserved 18th and 19th-century architecture. Many local events and farmers' markets are also held during these months, offering a chance to experience the local culture.For families, the summer provides ample opportunities for outdoor adventures. Nearby state parks offer hiking trails, picnic areas, and swimming spots.