August in El Dorado is the hottest month of the year. In August, the weather in El Dorado is typically hot. Average daily high temperature in August is about 34 degrees above zero. On average, El Dorado has 15 sunny, 10 rainy, and 6 partly cloudy days in August. The rains are usually heavy. August as well as January, June, July, and December is considered the most uncomfortable time to visit El Dorado.