In October, the weather in Polonnaruwa is typically hot. Average daily high temperature in October is about 33 degrees above zero. On average, Polonnaruwa has 18 rainy, 6 partly cloudy, 4 sunny, and 3 cloudy days in October. The rains are usually heavy. October as well as January, April, May, and November is considered the most uncomfortable time to visit Polonnaruwa.