August in Gangneung is the rainiest month of the year. In August, the weather in Gangneung is typically warm. Average daily high temperature in August is about 24 degrees above zero. On average, Gangneung has 19 rainy, 9 sunny, 2 partly cloudy, and 1 cloudy day in August. The rains are usually heavy. August as well as February, March, July, and November is considered the most uncomfortable time to visit Gangneung.