July in Chũ averages a daily high of 32°C with nights around 23.7°C. Expect roughly 15.1 wet days totalling 211.2mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Chũ is October–December.
Based on LANG SON, VM (55.1km), 1995–2024. 20 years of July data.