Dunmore Settlement, Bahamas offers 1 beach perfect for sunbathing, surfing, swimming, and more. Dunmore Settlement, Long Island, Bahamas, is known for its pristine beaches and vibrant marine life, attracting snorkeling and diving enthusiasts. The best time to travel to Dunmore Settlement, Bahamas, is from December to April, with average air temperatures around 75-85°F (24-29°C) and water temperatures about 75-80°F (24-27°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!