July in Trento is the rainiest and the warmest month of the year. In July, the weather in Trento is typically warm. Average daily high temperature in July is about 20 degrees above zero. On average, Trento has 25 rainy, 3 sunny, and 3 partly cloudy days in July. The rains are usually heavy. July as well as April, May, June, and August is considered the most uncomfortable time to visit Trento.