July in Ŭndŏk averages a daily high of 23.7°C with nights around 17.7°C. Expect roughly 15.1 wet days totalling 153.2mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Ŭndŏk is September.
Based on POSET, RS (40.8km), 1995–2024. 29 years of July data.