Peter Island, British Virgin Islands offers 7 beaches perfect for sunbathing, surfing, swimming, and more. Peter Island is known for its luxury resort and pristine beaches. The best time to travel to Peter Island, British Virgin Islands, is from December to April, with average air temperatures around 77-82°F (25-28°C) and water temperatures around 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!