September in Sanming averages a daily high of 31.7°C with nights around 21.9°C. Expect roughly 8.4 wet days totalling 82.9mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Sanming is October–November.
Based on YONGAN, CH (41.2km), 1995–2024. 23 years of September data.