May in Kuantan is the sunniest month of the year. In May, the weather in Kuantan is typically hot. Average daily high temperature in May is about 30 degrees above zero. On average, Kuantan has 28 rainy and 3 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 Kuantan.