June in Geraldton is the rainiest and the cloudiest month of the year. In June, the weather in Geraldton is typically warm. Average daily high temperature in June is about 20 degrees above zero. On average, Geraldton has 14 sunny, 9 rainy, 6 partly cloudy, and 1 cloudy day in June. The rains are usually moderate. June as well as July and August is considered the most uncomfortable time to visit Geraldton.