Weather in Guangzhou in September 2025
Average weather
Average temperature in Guangzhou in September
The expected average maximum temperature in September is +32°C with a maximum of +35°C and a minimum of +25°C.
The average maximum temperature goes up 50% by the end of the month, compared with the beginning of the month, from +29°C to +34°C.
Is Guangzhou warm or cold in September?
Guangzhou is typically hot in September.
Maximum temperatures go down compared to the previous month from +33°C to +32°C. The minimum temperature also goes down from +27°C to +25°C.
Make sure that you pack your summer linen and swimming costumes; it’s probably going to be hot.
September is one of the warmest months in Guangzhou, here is the comparison with other months:
Climate in Guangzhou in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +33°C | +32°C | +29°C | ||||
| Min. temperature | ||||||
| +23°C | +17°C | +12°C | ||||
| Max. temperature | ||||||
| +38°C | +37°C | +37°C | ||||
| Rainfall | ||||||
| 283 mm | 185 mm | 70 mm | ||||
| Wind | ||||||
| 1 m/s | 1 m/s | 2 m/s | ||||
| Humidity | ||||||
| 81% | 78% | 71% | ||||
| Air pressure | ||||||
| 1004 HPa | 1008 HPa | 1013 HPa | ||||
| Sunny days | ||||||
| 1 | 3 | 8 | ||||
| Cloudy days | ||||||
| 2 | 5 | 11 | ||||
| Rainy days | ||||||
| 28 | 22 | 11 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September weather is still as ok as in August. It’s getting colder in September. From +33°C in the day, the average maximum temperature lowers to +32°C. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 283 mm to 185 mm. It feels drier, as humidity decreases from 81% to 78%. The average wind speed doesn’t change much during September, staying around 1 m/s. The good news is there are likely to be more sunny days in September, from 1 to 3.
But maybe it is worth considering traveling in October as the weather gets better.
Wind
The average wind speed is 2 m/s getting up to 6 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Guangzhou is gradually decreasing during September, going from 6 m/s to 1 m/s over the course of the month.
Rain
How was the weather last September in Guangzhou?
Climate Change over Years
The climate in Guangzhou in September has not changed much over the last 43 years.
The average temperature was the lowest in 1984 (+25°C) and the highest in 2020 (+28°C). The driest year was 1991 with only 1439 mm of rainfall, and the wettest year was 2019 with 3629 mm.
FAQ
Is September a good time to visit Guangzhou?
Can you sunbathe in Guangzhou in September?
Is Guangzhou rainy in September?
Is it sunny in Guangzhou in September?
Other cities in China
Monthly weather in Guangzhou
Source of the data
For this page, we’ve looked at the typical weather in Guangzhou, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.