January in Brisbane is the windiest, the cloudiest, and the warmest month of the year. In January, the weather in Brisbane is typically warm. Average daily high temperature in January is about 26 degrees above zero. On average, Brisbane has 16 rainy, 10 sunny, 4 partly cloudy, and 1 cloudy day in January. The rains are usually heavy. January as well as February and March is considered the most uncomfortable time to visit Brisbane.