May in Jietou averages a daily high of 24.4°C with nights around 14.4°C. Expect roughly 16.3 wet days totalling 170.5mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Jietou is November–March.
Based on TENGCHONG, CH (38.5km), 1995–2024. 24 years of May data.