Portmore, Jamaica offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Portmore is known for its beautiful beaches and vibrant local culture. The best time to travel to Portmore, Jamaica, is from December to April, with average air temperatures around 77-86°F (25-30°C) and water temperatures near 81°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!