New Hartford, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. New Hartford is not particularly known for travel and beach tourism. The best time to travel to New Hartford, United States, is in late spring (May to June) when the average air temperature is around 60-70°F (15-21°C) and water temperature in nearby lakes is approximately 55-65°F (13-18°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!