Saintmartin, Bangladesh offers 1 beach perfect for sunbathing, surfing, swimming, and more. Saintmartin, Chattogram, Bangladesh, is known for Saint Martin's Island, a popular tourist destination famous for its coral reefs and natural beauty. The best time to travel to Saint Martin, Bangladesh, is from November to February, with average air temperatures around 25°C (77°F) and water temperatures near 26°C (79°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!