Bordentown City, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Bordentown City is known for the Clara Barton Schoolhouse and the Bordentown Historical Society. The best time to travel to Bordentown City, United States, is in late spring (May), when the average air temperature is around 70°F (21°C) and the nearby Delaware River water temperature is approximately 60°F (16°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!