In August, the weather in Chacaltaya is typically cold. Average daily high temperature in August is about 9 degrees above zero. On average, Chacaltaya has 12 rainy, 8 sunny, 7 partly cloudy, and 4 cloudy days in August. The rains are usually light. August as well as January, February, March, and April is considered the most uncomfortable time to visit Chacaltaya.