Rio Bueno, Jamaica offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Rio Bueno, Trelawny, Jamaica, is known for the historic Rio Bueno Harbour and its scenic river rafting experiences. The best time to travel to Rio Bueno, Jamaica, is from December to April, with average air temperatures around 77-86°F (25-30°C) and water temperatures about 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!