Pho Thanh, Vietnam offers 1 beach perfect for sunbathing, surfing, swimming, and more. Pho Thanh, Quang Ngai is known for the My Lai Massacre Memorial Site. The best time to travel to Pho Thanh, Vietnam, is from February to April, when the average air temperature is around 25-30°C (77-86°F) and the water temperature is 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!