December in Johor Bahru is the coldest month of the year. In December, the weather in Johor Bahru is typically hot. Average daily high temperature in December is about 28 degrees above zero. On average, Johor Bahru 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 Johor Bahru.