Which month is cooler in Chengdu?

September. According to the query of China Weather Network, the average daily minimum temperature in Chengdu in September is 15? C, the average daily maximum temperature is 25? C, the total precipitation in autumn is expected to be around 38 1mm, so Chengdu will start to cool down in September. Chengdu has a mild climate and four distinct seasons. Spring and autumn are ideal seasons for traveling and living.