Cap Haitien, Haiti offers 8 beaches perfect for sunbathing, surfing, swimming, and more. Cap Haitien is known for its proximity to the historic Citadelle Laferrière and the Sans-Souci Palace. The best time to travel to Cap Haitien, Haiti, is from November to March, with average air temperatures around 77-82°F (25-28°C) and water temperatures about 80°F (27°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!