August in Puerto Mont is the rainiest month of the year. In August, the weather in Puerto Mont is typically warm. Average daily high temperature in August is about 10 degrees above zero. On average, Puerto Mont has 21 rainy, 5 cloudy, 3 partly cloudy, and 2 sunny days in August. The rains are usually heavy. August as well as May, June, July, and September is considered the most uncomfortable time to visit Puerto Mont.