August in Loreto is the rainiest and the cloudiest month of the year. In August, the weather in Loreto is typically hot. Average daily high temperature in August is about 34 degrees above zero. On average, Loreto has 17 sunny, 6 rainy, 6 partly cloudy, and 2 cloudy days in August. The rains are usually light. August as well as July and September is considered the most uncomfortable time to visit Loreto.