Grafton, United States offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Dundee Beach is known for its excellent fishing opportunities, particularly at the Dundee Beach Fishing Lodge. The best time to travel to Grafton, United States, is in late spring (May), when the average air temperature is around 70°F (21°C) and the water temperature in nearby rivers 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!