Grasonville, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Grasonville is known for the Chesapeake Bay Environmental Center and its proximity to the scenic Kent Narrows. The best time to travel to Grasonville, United States, is in late spring (May to early June) when the average air temperature is around 70-75°F and the water temperature is approximately 60-65°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!