June in Guatemala City is the rainiest and the cloudiest month of the year. In June, the weather in Guatemala City is typically warm. Average daily high temperature in June is about 27 degrees above zero. On average, Guatemala City has 21 rainy, 4 cloudy, 3 partly cloudy, and 2 sunny days in June. The rains are usually heavy. June as well as August and September is considered the most uncomfortable time to visit Guatemala City.