In June, the weather in Coffs Harbour is typically warm. Average daily high temperature in June is about 17 degrees above zero. On average, Coffs Harbour has 14 sunny, 10 rainy, 5 partly cloudy, and 1 cloudy day in June. The rains are usually heavy. June as well as January, February, November, and December is considered the most uncomfortable time to visit Coffs Harbour.