May in Kota Bharu is the hottest month of the year. In May, the weather in Kota Bharu is typically hot. Average daily high temperature in May is about 31 degrees above zero. On average, Kota Bharu has 29 rainy and 2 sunny days in May. The rains are usually heavy. May as well as January, February, March, and April is considered the most uncomfortable time to visit Kota Bharu.