Smith Bay, United States Virgin Islands offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Smith Bay is known for Coki Beach and Coral World Ocean Park. The best time to travel to Smith Bay, United States Virgin Islands, is from December to April, with average air temperatures around 77-82°F and water temperatures about 79-82°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!