December in Kota Bharu is the rainiest 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 31 rainy days in December. The rains are usually heavy. December as well as January, February, March, and April is considered the most uncomfortable time to visit Kota Bharu.