Bentota, Sri Lanka offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Bentota is known for its beautiful Bentota Beach and the luxurious Bentota River. The best time to travel to Bentota, Sri Lanka, is from December to April, with average air temperatures around 27-30°C (81-86°F) and water temperatures about 28°C (82°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!