July in Cheongju-si averages a daily high of 29.5°C. Expect roughly 20 wet days totalling 475.6mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Cheongju-si is September–October.
Based on TAEJON, KS (38.3km), 1995–2024. 16 years of July data.