Chengdu Weather in September
Chengdu weather from September onwards gets cooler and cooler with the average high temperature around 26°C (79°F) only. The climate will be noticeably less humid too, with an average rainfall of 119 mm and the occasional heavy fog in the morning. Hence, a trip in this month would be more manageable due to lesser humidity, making trekking, sightseeing, and anything physical more tolerable.
However, September is the beginning of the other peak tourist season in Chengdu. Correspondingly, hotel room rates and flight tickets will definitely go up.
Averages for Chengdu Weather in September
Temperature: 21°C / 70°F
High Temperature: 26°C / 79°F
Low Temperature: 19°C / 66°F
Humidity: 75%
Rainfall: 119 mm
Rainy Days: 16 days
Sunrise: 06:40 ~ 06:56
Sunset: 18:51 ~ 19:28
Air Quality in September
Average AQI:40
Average AQI:40

What to Wear in Chengdu in September


Where to Go in Chengdu in September
Top 10 Things to Do in Chengdu
Other Tips
What is the temperature in Chengdu in September?
High/Low Temperatures of Chengdu in September

Air Quality of Chengdu in September

Historical Chengdu Weather in September
Sep | Temperature | Sunrise / Sunset | Humi- dity (%) | |
High | Low | |||
1 | 25.2°C / 77.4°F | 18.8°C / 65.8°F | 06:40 / 19:28 | 81 |
2 | 27°C / 80.6°F | 19.5°C / 67.1°F | 06:40 / 19:26 | 81 |
3 | 27.3°C / 81.1°F | 19°C / 66.2°F | 06:41 / 19:25 | 81 |
4 | 27.7°C / 81.9°F | 21°C / 69.8°F | 06:41 / 19:24 | 77 |
5 | 26.6°C / 79.9°F | 22°C / 71.6°F | 06:42 / 19:23 | 83 |
6 | 23.5°C / 74.3°F | 18.6°C / 65.5°F | 06:43 / 19:21 | 88 |
7 | 26.2°C / 79.2°F | 18.7°C / 65.7°F | 06:43 / 19:20 | 82 |
8 | 26.1°C / 79°F | 19.5°C / 67.1°F | 06:44 / 19:19 | 86 |
9 | 25.6°C / 78.1°F | 19.7°C / 67.5°F | 06:44 / 19:18 | 74 |
10 | 26.6°C / 79.9°F | 15.5°C / 59.9°F | 06:45 / 19:16 | 78 |
11 | 26.3°C / 79.3°F | 17°C / 62.6°F | 06:45 / 19:15 | 80 |
12 | 25.9°C / 78.6°F | 20.1°C / 68.2°F | 06:46 / 19:14 | 83 |
13 | 29.2°C / 84.6°F | 18.9°C / 66°F | 06:46 / 19:13 | 78 |
14 | 28.1°C / 82.6°F | 18.4°C / 65.1°F | 06:47 / 19:11 | 77 |
15 | 26.3°C / 79.3°F | 20.6°C / 69.1°F | 06:48 / 19:10 | 85 |
16 | 25.5°C / 77.9°F | 21.9°C / 71.4°F | 06:48 / 19:09 | 87 |
17 | 26.6°C / 79.9°F | 21.8°C / 71.2°F | 06:49 / 19:07 | 86 |
18 | 25.1°C / 77.2°F | 21.7°C / 71.1°F | 06:49 / 19:06 | 82 |
19 | 23.2°C / 73.8°F | 19.8°C / 67.6°F | 06:50 / 19:05 | 84 |
20 | 24.7°C / 76.5°F | 18.8°C / 65.8°F | 06:50 / 19:04 | 83 |
21 | 28.5°C / 83.3°F | 19.3°C / 66.7°F | 06:51 / 19:02 | 69 |
22 | 28.3°C / 82.9°F | 18.6°C / 65.5°F | 06:52 / 19:01 | 71 |
23 | 28.2°C / 82.8°F | 18.6°C / 65.5°F | 06:52 / 19:00 | 71 |
24 | 27.6°C / 81.7°F | 19.7°C / 67.5°F | 06:53 / 18:58 | 80 |
25 | 28.7°C / 83.7°F | 22°C / 71.6°F | 06:53 / 18:57 | 75 |
26 | 25.8°C / 78.4°F | 22.7°C / 72.9°F | 06:54 / 18:56 | 72 |
27 | 24.5°C / 76.1°F | 21°C / 69.8°F | 06:55 / 18:55 | 82 |
28 | 22.7°C / 72.9°F | 19.8°C / 67.6°F | 06:55 / 18:53 | 87 |
29 | 22.2°C / 72°F | 19.5°C / 67.1°F | 06:56 / 18:52 | 94 |
30 | 20.1°C / 68.2°F | 17.6°C / 63.7°F | 06:56 / 18:51 | 88 |
- Last updated on Aug. 27, 2023 -
Questions & Answers on Chengdu Weather in September
Asked by lyly from INDONESIA | Aug. 26, 2023 06:23
Reply

What is the weather like in mid sept in chengdu or jiu zhai gou ?
Answers (1)
Answered by Eva | Aug. 27, 2023 22:33
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It's the best time to visit the places, neither too hot nor cold. But the scenery in Jiuzhaigou will not be the most beautiful till late September.
Asked by Thanh Ha from VIETNAM | Jul. 20, 2019 09:53
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I can't find any information about JiuZhaiGou. I will go to Jiuzhaigou on Sept 13rd
but I dont know if it is opened or not? My friend said that it will be opened in Oct. Can you tell me some information?
Answers (1)
Answered by Vida from USA | Jul. 22, 2019 01:12
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According to the official website, it is still under reconstruction. There is no announcement when it will reopen. It is suggested to change your travel plan.
Asked by helen GOH from SINGAPORE | Sep. 01, 2016 07:04
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Kindly advise Chengdu weather condition at Lugu Lake in Sept. as i will be there on 10th of Sept.
As i am coming from Xichang the bus will terminate at which station?
thanks
thanks
Answers (1)
Answered by Cheryl from UNITED KINGDOM | Sep. 02, 2016 03:51
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It will shower then, and the temperature will range from 55F to 65F. You are advised to take jackets, light sweaters, shirts, pants, sneakers, and raincoats.
The buses reach Lugu Lake Passenger Transport Station in Zuosuo Town, Yanyuan County. ;)
The buses reach Lugu Lake Passenger Transport Station in Zuosuo Town, Yanyuan County. ;)