September in Tianshui averages a daily high of 23.3°C with nights around 13.4°C. Expect roughly 11.4 wet days totalling 79.3mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Tianshui is April–May.
Based on BEIDAO, CH (11.5km), 1995–2024. 18 years of September data.