Chongqing weather in September
In September, Chongqing has an average high of 29 °C84 °F and an average low of 20 °C68 °F, with about 140 mm5.5 in of precipitation. It is the 4th warmest month of the year and ranks 4th for precipitation.
How September compares with other months
Compared with August, September is 4.1 °C7.4 °F cooler on average. Compared with October, September is 5.3 °C9.6 °F warmer on average and wetter by 42 mm1.7 in. Daylight lasts about 12.3 hours around the middle of the month. Average relative humidity is 76% and the average cloud amount 77%.
Is September a good time to visit Chongqing?
September is not among the most comfortable months by our comfort score: it is hot (average high 29 °C84 °F), it is fairly wet (140 mm5.5 in) and it is humid (76%). The most comfortable months in Chongqing are March and April and October and November.
What to wear in September
For Chongqing in September, pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
September in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| Chongqing | 2984 | 2068 | 1405.5 |
| Huixing | 2882 | 1966 | 1405.5 |
| Yanjia | 2984 | 2068 | 1425.6 |
| Hechuan | 2984 | 2068 | 1405.5 |
| Fengcheng | 2984 | 2068 | 1425.6 |
| Gunan | 2984 | 2068 | 1385.4 |
| Yongchuan | 2883 | 1967 | 1405.5 |
| Nanchuan | 2882 | 1965 | 1385.4 |
| Baisha | 3086 | 2169 | 1405.5 |
Nearby places that are more than 1 °C1.8 °F cooler: Nanchuan.
Other months in Chongqing
- January11 °C52 °F / 2 °C36 °F
- February15 °C58 °F / 5 °C41 °F
- March20 °C68 °F / 9 °C49 °F
- April25 °C77 °F / 14 °C58 °F
- May28 °C83 °F / 18 °C65 °F
- June30 °C87 °F / 22 °C71 °F
- July33 °C92 °F / 24 °C76 °F
- August33 °C92 °F / 24 °C75 °F
- September29 °C84 °F / 20 °C68 °F
- October23 °C74 °F / 15 °C59 °F
- November18 °C65 °F / 9 °C49 °F
- December12 °C54 °F / 4 °C39 °F
Frequently asked questions
How warm is Chongqing in September?
In September the average high in Chongqing is 29 °C (84 °F) and the average low is 20 °C (68 °F).
Does it rain a lot in Chongqing in September?
On average about 140 mm (5.5 in) of precipitation falls in September; it ranks 4th of the 12 months.
Is September the warmest month in Chongqing?
No. The warmest month in Chongqing is July, with an average high of 33 °C (92 °F). The coldest month is January, with an average low of 2 °C (36 °F).
How long is the day in Chongqing in September?
In the middle of September the day in Chongqing lasts about 12.3 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Chongqing in September?
The average relative humidity in September is about 76%. Combined with warm days, it can feel muggy.
How cloudy is Chongqing in September?
On average about 77% of the sky is covered by cloud in September. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 357 m, while Chongqing lies at about 289 m. Temperatures on this page were therefore adjusted by +0.4 °C0.8 °F using the standard lapse rate of 6.5 °C per 1,000 m.