In August, the weather in Hyesan is typically warm. Average daily high temperature in August is about 22 degrees above zero. On average, Hyesan has 15 partly cloudy, 13 sunny, and 3 rainy days in August. The rains are usually light. August as well as {{month_nom: February}}, and {{month_nom: February}} is considered the most comfortable time to visit Hyesan.