September in Guilin averages a daily high of 30.7°C with nights around 22.3°C. Expect roughly 7.1 wet days totalling 68.2mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Guilin is October–November.
Based on GUILIN, CH (5.9km), 1995–2024. 18 years of September data.