Anse d Hainault, Haiti offers 1 beach perfect for sunbathing, surfing, swimming, and more. Anse d Hainault, Grand Anse, Haiti, is known for its beautiful beaches and proximity to the stunning natural landscapes of the Grand Anse region. The best time to travel to Anse d'Hainault, Haiti, is from November to March, with average air temperatures around 77-82°F (25-28°C) and water temperatures approximately 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!