May in Guigang averages a daily high of 30.2°C with nights around 22.9°C. Expect roughly 17.3 wet days totalling 274.5mm. 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. 30 years of May data.