Coral Bay, United States Virgin Islands offers 16 beaches perfect for sunbathing, surfing, swimming, and more. Coral Bay is known for the Virgin Islands National Park and the Annaberg Sugar Plantation. The best time to travel to Coral 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!