Frederiksted, United States Virgin Islands offers 18 beaches perfect for sunbathing, surfing, swimming, and more. Frederiksted is known for its beautiful beaches, historic architecture, and vibrant cultural festivals. The best time to travel to Frederiksted, 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!