Capitan, Dominican Republic offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Capitan, Hato Mayor, Dominican Republic, is known for the Los Haitises National Park. The best time to travel to Capitan, Dominican Republic, is from December to April, with average air temperatures around 77-86°F (25-30°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!