Great Guana Cay, Bahamas offers 1 beach perfect for sunbathing, surfing, swimming, and more. Great Guana Cay is known for Nippers Beach Bar & Grill and its stunning seven-mile-long beach. The best time to travel to Great Guana Cay, Bahamas, is from December to April, with average air temperatures around 75-80°F (24-27°C) and water temperatures about 75°F (24°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!