July in Guadalajara is the rainiest and the cloudiest month of the year. In July, the weather in Guadalajara is typically warm. Average daily high temperature in July is about 24 degrees above zero. On average, Guadalajara has 29 rainy and 2 sunny days in July. The rains are usually heavy. July as well as June, August, and September is considered the most uncomfortable time to visit Guadalajara.