June in Keelung is the cloudiest month of the year. In June, the weather in Keelung is typically hot. Average daily high temperature in June is about 29 degrees above zero. On average, Keelung has 20 rainy, 8 cloudy, and 2 sunny days in June. The rains are usually heavy. June as well as January, February, May, and October is considered the most uncomfortable time to visit Keelung.