Weather in Beijing in September 2025
Average weather
Average temperature in Beijing in September
Going from a maximum of +32°C during the day to a minimum of +9°C during the night, the temperature in September averages around +27°C.
The average maximum temperature goes down 22% by the end of the month, compared with the beginning of the month, from +30°C to +25°C.
Is Beijing warm or cold in September?
Beijing is typically warm in September.
Maximum temperatures go down compared to the previous month from +31°C to +27°C. The minimum temperature also goes down from +22°C to +16°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how September is compared to other months in Beijing:
Climate in Beijing in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +31°C | +27°C | +20°C | ||||
| Min. temperature | ||||||
| +12°C | +6°C | -6°C | ||||
| Max. temperature | ||||||
| +49°C | +43°C | +33°C | ||||
| Rainfall | ||||||
| 139 mm | 56 mm | 28 mm | ||||
| Wind | ||||||
| 1 m/s | 1 m/s | 1 m/s | ||||
| Humidity | ||||||
| 73% | 65% | 59% | ||||
| Air pressure | ||||||
| 1005 HPa | 1013 HPa | 1019 HPa | ||||
| Sunny days | ||||||
| 5 | 9 | 14 | ||||
| Cloudy days | ||||||
| 9 | 10 | 10 | ||||
| Rainy days | ||||||
| 17 | 10 | 7 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September weather is still as good as in August. It’s getting colder in September. From +31°C in the day, the average maximum temperature lowers to +27°C. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 139 mm to 56 mm. It feels drier, as humidity decreases from 73% to 65%. 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 5 to 9.
October brings much the same weather, it remains good.
Wind
The average wind speed is 1 m/s getting up to 2 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Beijing is gradually increasing during September, going from 1 m/s to 2 m/s over the course of the month.
Rain
How was the weather last September in Beijing?
Climate Change over Years
The climate in Beijing in September has not changed much over the last 43 years.
The average temperature was the lowest in 1985 (+17°C) and the highest in 2019 (+22°C). The driest year was 1997 with only 345 mm of rainfall, and the wettest year was 1979 with 820 mm.
FAQ
Is September a good time to visit Beijing?
Can you sunbathe in Beijing in September?
Is Beijing rainy in September?
Is it sunny in Beijing in September?
Other cities in China
Monthly weather in Beijing
Source of the data
For this page, we’ve looked at the typical weather in Beijing, 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.