September weather forecast and climate
Chengdu, China

A view of the attractive buildings, along the Qintai Road District in Chengdu, China
A view of the attractive buildings, along the Qintai Road District in Chengdu, China
September, the first month of the autumn, in Chengdu, is still a warm month, with average temperature ranging between min 19.3°C (66.7°F) and max 25.8°C (78.4°F).

Temperature

In Chengdu, the average high-temperature in September decreases, from a tropical 31°C (87.8°F) in August, to a warm 25.8°C (78.4°F). In Chengdu, the average low-temperature is 19.3°C (66.7°F).

Humidity

The average relative humidity in September is 74%.

Rainfall

In September, in Chengdu, the rain falls for 20.3 days. Throughout September, 66mm (2.6") of precipitation is accumulated. Throughout the year, there are 156.8 rainfall days, and 622mm (24.49") of precipitation is accumulated.

Snowfall

In Chengdu snow does not fall in March through October.

Daylight

In September, the average length of the day in Chengdu is 12.3h.

Sunshine

In Chengdu, the average sunshine in September is 6.9h.

UV index

In Chengdu, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to the UV radiation for ordinary individuals.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in September in Chengdu?

The average high-temperature, in September, in Chengdu, China, is 25.8°C (78.4°F), while the average low-temperature is 19.3°C (66.7°F).

What is the average humidity in September in Chengdu?

In September, the average relative humidity is 74%.

How many days does it rain in September in Chengdu?

In Chengdu, in September, during 20.3 rainfall days, 66mm (2.6") of precipitation is typically accumulated.

When it does not snow in Chengdu?

March through October are months without snowfall in Chengdu, China.

What is the average length of the day in September in Chengdu?

In Chengdu, China, the average length of the day in September is 12.3h.

How many hours of sunshine does Chengdu have in September?

The average sunshine in September is 6.9h.

What is the UV index intensity in September in Chengdu?

In September, the average daily maximum UV index in Chengdu, China, is 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to the UV radiation.
Average temperature in September - Chengdu, China
  • Average high temperature in September: 25.8°C

The warmest month (with the highest average high temperature) is August (31°C).
The month with the lowest average high temperature is January (10.2°C).

  • Average low temperature in September: 19.3°C

The month with the highest average low temperature is August (22.5°C).
The coldest month (with the lowest average low temperature) is January (2.8°C).

Average humidity in September - Chengdu, China
  • Average humidity in September: 74%

The month with the highest relative humidity is July (76%).
The month with the lowest relative humidity is May (56%).

Average rainfall in September - Chengdu, China
  • Average rainfall in September: 66mm

The wettest month (with the highest rainfall) is August (218mm).
The driest months (with the least rainfall) are January and February (5mm).

Average rainfall days in September - Chengdu, China
  • Average rainfall days in September: 20.3 days

The month with the highest number of rainy days is August (22.5 days).
The month with the least rainy days is January (5.8 days).

Average snowfall in September - Chengdu, China
  • Average snowfall in September: 0mm

The month with the highest snowfall is January (8mm).
Months with the least snowfall are March, April, May, June, July, August, September and October (0mm).

Average snowfall days in September - Chengdu, China
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (2 days).
Months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).

Average daylight in September / Average sunshine in September - Chengdu, China
  • Average daylight in September: 12.3h

The month with the longest days is June (Average daylight: 14.1h).
The month with the shortest days is December (Average daylight: 10.2h).

  • Average sunshine in September: 6.9h

The month with the most sunshine is August (Average sunshine: 8.4h).
The month with the least sunshine is October (Average sunshine: 6.7h).

Average UV index in September - Chengdu, China
  • Average UV index in September: 6

The month with the highest UV index is June (UV index 7).
Months with the lowest UV index are January and December (UV index 3).