An Chan, Vietnam offers 3 beaches perfect for sunbathing, surfing, swimming, and more. An Chan, Phu Yen, Vietnam, is known for Ganh Da Dia, a unique geological formation of hexagonal basalt columns. The best time to travel to An Chan, Vietnam, is from February to April, with average air temperatures around 25-30°C (77-86°F) and water temperatures approximately 26-28°C (79-82°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!