August in Songnim is the warmest month of the year. In August, the weather in Songnim is typically warm. Average daily high temperature in August is about 27 degrees above zero. On average, Songnim has 18 rainy, 11 sunny, and 2 partly cloudy days in August. The rains are usually heavy. August as well as February, July, and November is considered the most uncomfortable time to visit Songnim.