March in Bentota is the hottest month of the year. In March, the weather in Bentota is typically hot. Average daily high temperature in March is about 30 degrees above zero. On average, Bentota has 25 rainy, 5 sunny, and 1 cloudy day in March. The rains are usually heavy. March as well as April, May, June, and July is considered the most uncomfortable time to visit Bentota.