December weather forecast in Keelung

December in Keelung is the windiest month of the year. In December, the weather in Keelung is typically warm. Average daily high temperature in December is about 18 degrees above zero. On average, Keelung has 27 rainy and 4 sunny days in December. The rains are usually heavy. December as well as January, February, May, and June is considered the most uncomfortable time to visit Keelung.