May in Johor Bahru is the rainiest and the hottest month of the year. In May, the weather in Johor Bahru is typically hot. Average daily high temperature in May is about 31 degrees above zero. On average, Johor Bahru has 29 rainy, 1 cloudy, and 1 partly cloudy day 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.