Do Son, Vietnam offers 1 beach perfect for sunbathing, surfing, swimming, and more. Do Son, Hai Phong, Vietnam, is known for its picturesque beaches and vibrant seaside resorts, making it a popular destination for beach tourism. The best time to travel to Do Son, Vietnam, is from April to June, when the average air temperature is around 27°C (81°F) and the water temperature is approximately 28°C (82°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!