Guiyang weather in September
In September, Guiyang has an average high of 25 °C77 °F and an average low of 16 °C61 °F, with about 108 mm4.3 in of precipitation. It is the 4th warmest month of the year and ranks 5th for precipitation.
How September compares with other months
Compared with August, September is 2.6 °C4.6 °F cooler on average and drier by 25 mm1.0 in. Compared with October, September is 4.3 °C7.7 °F warmer on average and wetter by 21 mm0.8 in. Daylight lasts about 12.3 hours around the middle of the month. Average relative humidity is 84% and the average cloud amount 74%.
Is September a good time to visit Guiyang?
September is not among the most comfortable months by our comfort score: it is fairly wet (108 mm4.3 in) and it is humid (84%). The most comfortable months in Guiyang are March and April and October.
What to wear in September
For Guiyang 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 |
|---|---|---|---|
| Guiyang | 2577 | 1661 | 1084.3 |
| Anshun | 2475 | 1559 | 1254.9 |
| Duyun | 2780 | 1763 | 1114.4 |
| Zunyi | 2780 | 1762 | 1064.2 |
| Kaili | 2780 | 1763 | 1104.3 |
| Bijie | 2475 | 1457 | 1104.3 |
| Gulin | 2984 | 1967 | 1234.8 |
| Liupanshui | 2272 | 1355 | 1275.0 |
| Xingyi | 2678 | 1661 | 1154.5 |
Nearby places that are more than 1 °C1.8 °F warmer in September: Duyun, Zunyi, Kaili and Gulin; cooler: Anshun, Bijie and Liupanshui.
Other months in Guiyang
- January10 °C50 °F / 0 °C32 °F
- February14 °C56 °F / 3 °C37 °F
- March18 °C64 °F / 7 °C44 °F
- April23 °C73 °F / 11 °C53 °F
- May25 °C78 °F / 15 °C59 °F
- June27 °C80 °F / 18 °C65 °F
- July27 °C81 °F / 20 °C68 °F
- August27 °C81 °F / 19 °C66 °F
- September25 °C77 °F / 16 °C61 °F
- October21 °C70 °F / 12 °C53 °F
- November17 °C62 °F / 7 °C44 °F
- December11 °C52 °F / 1 °C34 °F
Frequently asked questions
How warm is Guiyang in September?
In September the average high in Guiyang is 25 °C (77 °F) and the average low is 16 °C (61 °F).
Does it rain a lot in Guiyang in September?
On average about 108 mm (4.3 in) of precipitation falls in September; it ranks 5th of the 12 months.
Is September the warmest month in Guiyang?
No. The warmest month in Guiyang is July, with an average high of 27 °C (81 °F). The coldest month is January, with an average low of 0 °C (32 °F).
How long is the day in Guiyang in September?
In the middle of September the day in Guiyang 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 Guiyang in September?
The average relative humidity in September is about 84%. Combined with warm days, it can feel muggy.
How cloudy is Guiyang in September?
On average about 74% 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 1,234 m, while Guiyang lies at about 1,087 m. Temperatures on this page were therefore adjusted by +1 °C1.7 °F using the standard lapse rate of 6.5 °C per 1,000 m.