June in Lạng Sơn averages a daily high of 31.7°C. Expect roughly 14.2 wet days totalling 173.8mm. 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. 18 years of June data.