Grenada, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Grenada, Mississippi, United States, is known for the Grenada Lake, a popular destination for fishing and outdoor recreation. The best time to travel to Grenada, United States, is in late spring (April to May) when the average air temperature is around 70-80°F and the water temperature is approximately 65-75°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!