August in Puerto Juárez is the hottest month of the year. In August, the weather in Puerto Juárez is typically hot. Average daily high temperature in August is about 30 degrees above zero. On average, Puerto Juárez has 16 sunny and 15 rainy days in August. The rains are usually heavy. August as well as June, September, and October is considered the most uncomfortable time to visit Puerto Juárez.