Sonaichhari, Bangladesh offers 1 beach perfect for sunbathing, surfing, swimming, and more. Sonaichhari, Chittagong, Bangladesh, is known for the Kaptai Lake and the nearby Chittagong Hill Tracts. The best time to travel to Sonaichhari, Bangladesh, is from November to February, when the average air temperature is around 20-25°C (68-77°F) and the water temperature is approximately 24-26°C (75-79°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!