July in Ciudad Guayana is the rainiest month of the year. In July, the weather in Ciudad Guayana is typically hot. Average daily high temperature in July is about 29 degrees above zero. On average, Ciudad Guayana has 27 rainy and 4 sunny days in July. The rains are usually heavy. July as well as May, June, August, and September is considered the most uncomfortable time to visit Ciudad Guayana.