September in Guigang averages a daily high of 32.3°C with nights around 24.1°C. Expect roughly 9.8 wet days totalling 101.6mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Guigang is October–December.
Based on GUIPING, CH (59km), 1995–2024. 29 years of September data.