December in Gisborne is the cloudiest month of the year. In December, the weather in Gisborne is typically warm. Average daily high temperature in December is about 20 degrees above zero. On average, Gisborne has 15 partly cloudy, 10 sunny, 4 rainy, and 2 cloudy days in December. The rains are usually moderate. December as well as January is considered the most comfortable time to visit Gisborne.