July in Lhasa averages a daily high of 23.6°C with nights around 11.8°C. Expect roughly 19.9 wet days totalling 143.5mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Lhasa is April–May.
Based on LHASA, CH (3.7km), 1995–2024. 23 years of July data.