August in Pyeongtaek is the warmest month of the year. In August, the weather in Pyeongtaek is typically warm. Average daily high temperature in August is about 27 degrees above zero. On average, Pyeongtaek has 19 rainy, 9 sunny, and 3 partly cloudy days in August. The rains are usually heavy. August as well as July and December is considered the most uncomfortable time to visit Pyeongtaek.