Grand Mal, Grenada offers 1 beach perfect for sunbathing, surfing, swimming, and more. Grand Mal, Saint George, Grenada, is known for Grand Mal Bay and its proximity to the vibrant capital city of St. George's. The best time to travel to Grand Mal, Grenada, is from December to April, with average air temperatures around 82°F (28°C) and water temperatures near 80°F (27°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!