Little Jost Van Dyke, British Virgin Islands offers 1 beach perfect for sunbathing, surfing, swimming, and more. Little Jost Van Dyke, Sandy Cay Island, British Virgin Islands, is known for its pristine beaches and vibrant marine life, making it a popular destination for snorkeling and sailing. The best time to travel to Little Jost Van Dyke, British Virgin Islands, is from December to April, with average air temperatures around 77-82°F (25-28°C) and water temperatures about 79-82°F (26-28°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!