Unity Hall, Jamaica offers 1 beach perfect for sunbathing, surfing, swimming, and more. Unity Hall, Hanover, Jamaica, is known for its proximity to the popular tourist destination of Montego Bay. The best time to travel to Unity Hall, Jamaica, is from December to April, with average air temperatures around 80°F (27°C) and water temperatures near 82°F (28°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!