July in Wellington is the rainiest month of the year. In July, the weather in Wellington is typically warm. Average daily high temperature in July is about 11 degrees above zero. On average, Wellington has 14 rainy, 11 sunny, 5 partly cloudy, and 1 cloudy day in July. The rains are usually heavy. July as well as May, June, August, and September is considered the most uncomfortable time to visit Wellington.