In December, the weather in Sri Jayawardenapura Kotte is typically hot. Average daily high temperature in December is about 29 degrees above zero. On average, Sri Jayawardenapura Kotte has 18 rainy, 8 sunny, 3 cloudy, and 2 partly cloudy days in December. The rains are usually heavy. December as well as March, April, May, and June is considered the most uncomfortable time to visit Sri Jayawardenapura Kotte.