In July, the weather in Oaxaca de Juárez is typically warm. Average daily high temperature in July is about 19 degrees above zero. On average, Oaxaca de Juárez has 29 rainy, 1 sunny, and 1 cloudy day in July. The rains are usually heavy. July as well as June, August, September, and October is considered the most uncomfortable time to visit Oaxaca de Juárez.