January in Geelong is the sunniest and the warmest month of the year. In January, the weather in Geelong is typically warm. Average daily high temperature in January is about 23 degrees above zero. On average, Geelong has 13 partly cloudy, 12 sunny, 4 rainy, and 2 cloudy days in January. The rains are usually moderate. January as well as February is considered the most comfortable time to visit Geelong.