August in Lạng Sơn averages a daily high of 31.5°C. Expect roughly 16.7 wet days totalling 243.1mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Lạng Sơn is October–December.
Based on LANG SON, VM (2.3km), 1995–2024. 19 years of August data.