Vang Vieng, Laos offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Vang Vieng is known for its stunning karst landscape, the Nam Song River, and Tham Chang Cave. The best time to travel to Vang Vieng, Laos, is from November to February, when the average air temperature is around 25°C (77°F) and the water temperature is approximately 22°C (72°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!