Grand Sallne, Haiti offers 1 beach perfect for sunbathing, surfing, swimming, and more. Grand Sallne, Nord, Haiti, is known for the Citadelle Laferriere, a UNESCO World Heritage site and one of the largest fortresses in the Americas. The best time to travel to Grand Saline, Haiti, is from November to March, with average air temperatures around 77-82°F (25-28°C) and water temperatures near 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!