Chengdu
September
Weather in Chengdu for September 2025
Your guide to Chengdu weather in September - trends and predictions
In general, the average temperature in Chengdu at the beginning of September is 31.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 24.9 °C by the end of September.
Expect significant rainfall in Chengdu during September, with an average of 19 rainy days.
Is September a good time to visit Chengdu? check out the best time to travel to Chengdu page.
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11
Dry days
19
Rainy days
0
Snow days
26°/20°
Temperatures
10 km/h
Avg max wind
76 %
Avg humidity
Chengdu in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  29° | 2  32° | 3 33° | 4  33° | 5  32° | 6  32° | 7  29° |
| 8 32° | 9 31° | 10 27° | 11 28° | 12 29° | 13 28° | 14 29° |
| 15 28° | 16 30° | 17 29° | 18 29° | 19 28° | 20 30° | 21 28° |
| 22 27° | 23 25° | 24 25° | 25 25° | 26 26° | 27 27° | 28 26° |
| 29  24° | 30 21° |
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Temperatures trend during September in Chengdu
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Moderate or heavy rain shower | 29° /22° | 9 mm | 6 | |
| 2 Sept. | Sunny | 32° /21° | 2.9 mm | 8 | |
| 3 Sept. | Sunny | 33° /22° | 3.7 mm | 8 | |
| 4 Sept. | Partly cloudy | 33° /23° | 2.6 mm | 8 | |
| 5 Sept. | Cloudy | 32° /23° | 5.3 mm | 7 | |
| 6 Sept. | Light rain shower | 32° /23° | 7 mm | 7 | |
| 7 Sept. | Patchy light drizzle | 29° /23° | 10 mm | 6 | |
| 8 Sept. | Cloudy | 32° /23° | 3.6 mm | 7 | |
| 9 Sept. | Light rain shower | 31° /23° | 15.5 mm | 7 | |
| 10 Sept. | Light rain shower | 27° /22° | 29.8 mm | 6 | |
| 11 Sept. | Light rain shower | 28° /20° | 23.7 mm | 6 | |
| 12 Sept. | Cloudy | 29° /20° | 7.8 mm | 7 | |
| 13 Sept. | Partly cloudy | 28° /21° | 10.6 mm | 7 | |
| 14 Sept. | Cloudy | 29° /21° | 9.5 mm | 6 | |
| 15 Sept. | Cloudy | 28° /22° | 6 mm | 6 | |
| 16 Sept. | Light rain shower | 30° /22° | 5.4 mm | 7 | |
| 17 Sept. | Light rain | 29° /22° | 4.7 mm | 7 | |
| 18 Sept. | Patchy rain possible | 29° /23° | 2 mm | 7 | |
| 19 Sept. | Light rain shower | 28° /24° | 2.7 mm | 6 | |
| 20 Sept. | Light rain shower | 30° /22° | 3.2 mm | 7 | |
| 21 Sept. | Partly cloudy | 28° /21° | 0.3 mm | 8 | |
| 22 Sept. | Light rain shower | 27° /21° | 0.4 mm | 7 | |
| 23 Sept. | Light drizzle | 25° /21° | 0.6 mm | 6 | |
| 24 Sept. | Light drizzle | 25° /20° | 0.7 mm | 6 | |
| 25 Sept. | Light drizzle | 25° /21° | 1.4 mm | 6 | |
| 26 Sept. | Light drizzle | 26° /20° | 1.4 mm | 6 | |
| 27 Sept. | Patchy rain possible | 27° /21° | 0.4 mm | 7 | |
| 28 Sept. | Patchy rain possible | 26° /20° | 2.3 mm | 6 | |
| 29 Sept. | Overcast | 24° /18° | 0.8 mm | 5 | |
| 30 Sept. | Patchy rain possible | 21° /18° | 0.9 mm | 5 | |
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Important Notice
Our weather forecast for Chengdu in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Chengdu forecast closer to your planned date for the most up-to-date weather information.
Chengdu in September - FAQ
What are the expected maximum and minimum temperatures in Chengdu during September?
During September, expect a variety of temperatures with highs around 26° and lows near 20°, suitable for diverse activities and preferences.
How much rainfall should be expected in Chengdu during September?
Significant rainfall exceeding 142.7 mm is expected in Chengdu during September, occurring over more than 19 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Chengdu during September?
The average wind speed in Chengdu during September is 10 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Chengdu in September?
As you prepare for your trip to Chengdu in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Chengdu, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Lightweight Clothing: T-shirts, blouses, shorts, skirts
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Umbrellas/Raincoats: For rainy days
- Personal Items
- Sunscreen: High SPF for sunny destinations
- Lip Balm with SPF: To protect against chapped lips
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