August in Sơn La averages a daily high of 30.1°C. Expect roughly 18.2 wet days totalling 263.4mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Sơn La is October–March.
Based on SON LA, VM (2.1km), 1995–2024. 17 years of August data.