January in Mataram is the rainiest, the windiest, and the cloudiest month of the year. In January, the weather in Mataram is typically warm. Average daily high temperature in January is about 26 degrees above zero. On average, Mataram has 30 rainy and 1 sunny day in January. The rains are usually heavy. January as well as February, March, April, and May is considered the most uncomfortable time to visit Mataram.