December in Kota Bharu is the coldest month of the year. In December, the weather in Kota Bharu is typically warm. Average daily high temperature in December is about 27 degrees above zero. On average, Kota Bharu has 27 rainy, 3 cloudy, and 1 partly cloudy day in December. The rains are usually heavy. December as well as January, April, May, and June is considered the most uncomfortable time to visit Kota Bharu.