September weather forecast
Chengdu, China

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The attractive buildings, along the Qintai Road District in Chengdu, China
The attractive buildings, along the Qintai Road District in Chengdu, China

Weather in September

With the arrival of September, Chengdu begins to bid farewell to the hot summer, marking a drop in the average high temperature to 25.8°C (78.4°F) and the low to 19.3°C (66.7°F). A significant reduction in precipitation levels to 66mm (2.6") signifies the end of the monsoon season. Residents find relief as the heat subsides, making way for cooler and drier days in the city.

Temperature

As August shifts into September in Chengdu, a slight alteration in temperatures is observed, with average highs reducing from a tropical 31°C (87.8°F) to a moderately hot 25.8°C (78.4°F). Throughout the nights in September, an average low-temperature of 19.3°C (66.7°F) is noted in Chengdu.

Humidity

In Chengdu, the average relative humidity in September is 74%.

Rainfall

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

Snowfall

March through October are months without snowfall.

Daylight

The average length of the day in September is 12h and 21min.
On the first day of the month, sunrise is at 06:40 and sunset at 19:26. On the last day of September, sunrise is at 06:56 and sunset at 18:50 CST.

Sunshine

The average sunshine in September in Chengdu is 6.9h.

UV index

In September, the average daily maximum UV index in Chengdu is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 6 in September transforms into the following instructions:
Shun overexposure. Protection from sun ravages is indispensable. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
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Frequently asked questions

What is the usual temperature for Chengdu in September?

During September, Chengdu experiences an average high-temperature of 25.8°C (78.4°F) and a low-temperature of 19.3°C (66.7°F). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines relative humidity and air temperature, in August is evaluated at 39°C (102.2°F).

What is the average humidity in September in Chengdu?

In September, the average relative humidity in Chengdu, China, is 74%.

How much does it rain in Chengdu in September?

In Chengdu, China, during September, the rain falls for 20.3 days and regularly aggregates up to 66mm (2.6") of precipitation.

When it does not snow in Chengdu?

March through October are months without snowfall.

How many hours of daylight does Chengdu have in September?

In September, the average day length is 12h and 21min.

When is the sunrise / sunset in September in Chengdu?

In September, on the first day of the month, sunrise is at 06:40 and sunset at 19:26. On the last day of the month, in Chengdu, China, sunrise is at 06:56 and sunset at 18:50 CST.

How long on average sun shines in September in Chengdu?

The average sunshine duration in September is 6.9h.

How high is the UV index in September in Chengdu?

The average daily maximum UV index in September in Chengdu, China, is 6. A UV Index value of 6 to 7 symbolizes a high health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Chengdu, China

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).

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Average pressure in September
Chengdu, China

Average pressure in September - Chengdu, China
  • Average pressure in September: 1012.7mbar

The month with the highest atmospheric pressure is December (1023.2mbar).
The month with the lowest atmospheric pressure is July (1004mbar).

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Average wind speed in September
Chengdu, China

Average wind speed in September - Chengdu, China
  • Average wind speed in September: 5.8km/h

The windiest month (with the highest average wind speed) is May (7.3km/h).
The calmest months (with the lowest average wind speed) are August and September (5.8km/h).

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Average humidity in September
Chengdu, China

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%).

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Average rainfall in September
Chengdu, China

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).

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Average rainfall days in September
Chengdu, China

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).

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Average snowfall in September
Chengdu, China

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

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

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Average snowfall days in September
Chengdu, China

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).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Chengdu, China

Average daylight in September / Average sunshine in September - Chengdu, China
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).

  • Average sunshine in September: 6h and 5min

The month with the most sunshine is August (Average sunshine: 8h and 24min).
The month with the least sunshine is October (Average sunshine: 6h and 42min).

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Average sunshine days in September
Chengdu, China

Average sunshine days in September - Chengdu, China
  • Average sunshine days in September: 7.5 days

The month with the most sunshine days is January (20.6 days).
The month with the least sunshine days is August (6.9 days).

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Average UV index in September
Chengdu, China

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).
The months with the lowest UV index are January and December (UV index 3).

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Average cloud cover in September
Chengdu, China

Average cloud cover in September - Chengdu, China
  • Average cloud cover in September: 52

The months with the most cloud cover are September and October (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 37).

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Average visibility in September
Chengdu, China

Average visibility in September - Chengdu, China
  • Average visibility in September: 9km

The months with the highest visibility are February, March, April, May and June (10km).
The months with the lowest visibility are January, July, August, September, October, November and December (9km).

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Chengdu, China

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