May in Johor Bahru is the hottest month of the year. In May, the weather in Johor Bahru is typically hot. Average daily high temperature in May is about 30 degrees above zero. On average, Johor Bahru 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 Johor Bahru.