Charlotte Amalie West, United States Virgin Islands offers 33 beaches perfect for sunbathing, surfing, swimming, and more. Charlotte Amalie West is known for its proximity to Magens Bay, a popular beach destination in Saint Thomas, United States Virgin Islands. The best time to travel to Charlotte Amalie West, 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!