Ganh Hao, Vietnam offers 1 beach perfect for sunbathing, surfing, swimming, and more. Ganh Hao, Bac Lieu, Vietnam, is known for the Ganh Hao Lighthouse and its proximity to the Bac Lieu Wind Farm. The best time to travel to Ganh Hao, Vietnam, is from December to April, with average air temperatures around 25-30°C (77-86°F) and water temperatures approximately 27-29°C (81-84°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!