Jamesport, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Jamesport is known for its vineyards and wineries, particularly Jamesport Vineyards, in the North Fork wine region. The best time to travel to Jamesport, United States, is in late spring (May to June) when the average air temperature is around 65-75°F and the water temperature is approximately 55-65°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!