In May, the weather in Anuradhapura is typically hot. Average daily high temperature in May is about 31 degrees above zero. On average, Anuradhapura has 17 rainy, 9 cloudy, 4 sunny, and 1 partly cloudy day in May. The rains are usually heavy. May as well as April, August, September, and October is considered the most uncomfortable time to visit Anuradhapura.