Quan Lan, Vietnam offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Quan Lan is known for its pristine beaches and the historic Quan Lan Pagoda. The best time to travel to Quan Lan, Vietnam, is from April to June, 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!