April in Anuradhapura is the hottest month of the year. In April, the weather in Anuradhapura is typically hot. Average daily high temperature in April is about 32 degrees above zero. On average, Anuradhapura has 27 rainy and 3 sunny days in April. The rains are usually heavy. April as well as May, August, September, and October is considered the most uncomfortable time to visit Anuradhapura.