Dumain, Bangladesh offers 1 beach perfect for sunbathing, surfing, swimming, and more. Dhaka is known for the Lalbagh Fort, Ahsan Manzil, and the National Museum. The best time to travel to Dumain, Bangladesh, is from November to February, with average air temperatures around 20-25°C (68-77°F) and water temperatures near 22-25°C (72-77°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!