August in Sacheon is the hottest month of the year. In August, the weather in Sacheon is typically hot. Average daily high temperature in August is about 29 degrees above zero. On average, Sacheon has 18 rainy, 5 sunny, 4 cloudy, and 4 partly cloudy days in August. The rains are usually heavy. August as well as January and July is considered the most uncomfortable time to visit Sacheon.