August in Tianshui averages a daily high of 29.3°C with nights around 18.1°C. Expect roughly 9.1 wet days totalling 86.6mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Tianshui is April–May.
Based on BEIDAO, CH (11.5km), 1995–2024. 19 years of August data.