May in Harrogate is the sunniest month of the year. In May, the weather in Harrogate is typically warm. Average daily high temperature in May is about 14 degrees above zero. On average, Harrogate has 14 rainy, 7 cloudy, 5 sunny, and 5 partly cloudy days in May. The rains are usually moderate. May as well as January, February, March, and April is considered the most uncomfortable time to visit Harrogate.