Chengdu weather in September
Temperature, rain and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Fair
Best time to visit: March – May, October
What is the weather like in Chengdu in September?
In September, Chengdu is warm: daytime highs average 26 °C, and nights cool down to about 20 °C. The sun is scarce, with only about 2 hours a day. It rains often – on about 15 days, adding up to 135 mm. The air is often humid and muggy. All in all, September is a so-so month for a holiday in Chengdu.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 35 | 56 | 61 |
| Day | 30° | 26° | 21° |
| Night | 23° | 20° | 15° |
| Sun | 4 h | 2 h | 2 h |
| Rain days | 19 | 15 | 13 |
More details for September
- Daylight
- 12 h 24 min06:47 – 19:11
- UV index
- 9 · very highclear sky, noon (estimate)All months
- Muggy days
- 17 daysdew point 18 °C or moreAll months
- Wind
- 11 km/haverage daily peakAll months
- Cloud cover
- 79 %on averageAll months
- Hot days
- 3 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC+8Asia/Shanghai
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %0 %
- Few rainy daysweight 30 %19 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in September
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Insect repellent
- Rain jacket or umbrella
Chengdu in September: quick answers
Is Chengdu hot in September?
Warm rather than hot: in September, daytime highs in Chengdu average 26 °C and nights cool to about 20 °C. On about 3 days the thermometer climbs to 30 °C or more.
Does it rain much in Chengdu in September?
It rains often – on about 15 days, adding up to 135 mm.
Chengdu month by month
The whole year in ChengduAll destinations: ChinaWhere to go in September
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences