Weather in Shanghai for September 2025
In general, the average temperature in Shanghai at the beginning of September is 30.9 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 28.1 °C by the end of September.
Shanghai experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 193.9 mm.
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Shanghai in September average weather
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  32° | 2  30° | 3  29° | 4 31° | 5 30° | 6 32° | 7 32° |
| 8 31° | 9 31° | 10 31° | 11 30° | 12 29° | 13 28° | 14 27° |
| 15 27° | 16  27° | 17  30° | 18 30° | 19  29° | 20 27° | 21 26° |
| 22 27° | 23 27° | 24 27° | 25 28° | 26 28° | 27 29° | 28 28° |
| 29 29° | 30 28° |
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Temperatures trend during September in Shanghai
September weather day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Partly cloudy | 32° /23° | 0.1 mm | 8 | |
| 2 Sept. | Moderate or heavy rain shower | 30° /24° | 5.6 mm | 7 | |
| 3 Sept. | Patchy rain possible | 29° /24° | 9.2 mm | 6 | |
| 4 Sept. | Moderate or heavy rain shower | 31° /24° | 3.9 mm | 7 | |
| 5 Sept. | Moderate rain at times | 30° /24° | 2.7 mm | 7 | |
| 6 Sept. | Moderate or heavy rain shower | 32° /23° | 2.1 mm | 7 | |
| 7 Sept. | Partly cloudy | 32° /23° | 0.1 mm | 7 | |
| 8 Sept. | Patchy rain possible | 31° /23° | 0.4 mm | 7 | |
| 9 Sept. | Patchy rain possible | 31° /23° | 5.3 mm | 7 | |
| 10 Sept. | Moderate or heavy rain shower | 31° /23° | 6.7 mm | 7 | |
| 11 Sept. | Moderate or heavy rain shower | 30° /23° | 15.3 mm | 7 | |
| 12 Sept. | Moderate rain at times | 29° /24° | 23.4 mm | 6 | |
| 13 Sept. | Moderate or heavy rain shower | 28° /23° | 26.3 mm | 6 | |
| 14 Sept. | Moderate or heavy rain shower | 27° /23° | 21.9 mm | 6 | |
| 15 Sept. | Moderate or heavy rain shower | 27° /23° | 8.9 mm | 6 | |
| 16 Sept. | Overcast | 27° /22° | 25.7 mm | 6 | |
| 17 Sept. | Sunny | 30° /22° | 0.3 mm | 7 | |
| 18 Sept. | Patchy rain possible | 30° /22° | 0.2 mm | 7 | |
| 19 Sept. | Cloudy | 29° /22° | 4.6 mm | 7 | |
| 20 Sept. | Moderate or heavy rain shower | 27° /21° | 22.1 mm | 6 | |
| 21 Sept. | Sunny | 26° /20° | 0.6 mm | 6 | |
| 22 Sept. | Sunny | 27° /20° | 1 mm | 6 | |
| 23 Sept. | Sunny | 27° /20° | 0.4 mm | 7 | |
| 24 Sept. | Sunny | 27° /20° | 0.9 mm | 6 | |
| 25 Sept. | Sunny | 28° /21° | 0.3 mm | 7 | |
| 26 Sept. | Sunny | 28° /21° | 1.4 mm | 7 | |
| 27 Sept. | Patchy rain possible | 29° /21° | 0.4 mm | 6 | |
| 28 Sept. | Sunny | 28° /21° | 1.1 mm | 7 | |
| 29 Sept. | Patchy rain possible | 29° /22° | 1.8 mm | 6 | |
| 30 Sept. | Overcast | 28° /22° | 1 mm | 6 | |
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Guide for Shanghai in September
In September, Shanghai experiences a transition from the hot and humid summer to the more comfortable and mild autumn weather. At the beginning of the month, the average temperature in Shanghai is around 27°, with high humidity levels and occasional rain showers.
As the month progresses, the temperature gradually decreases, and by the end of September, the average temperature hovers around 23°. The humidity also decreases, making the weather more pleasant for outdoor activities.
During the early part of September, Shanghai may still experience occasional typhoons or heavy rainfall, but as the month progresses, the chances of these weather events diminish.
Visitors can expect some cloudy days, but overall, the weather becomes more stable and suitable for exploring the city's attractions.
It's important to note that weather patterns can vary from year to year, so it's always a good idea to check the latest weather forecasts before traveling to Shanghai in September.
Overall, September offers a transition from the summer heat to more comfortable autumn conditions, making it a favorable time to visit this vibrant city.
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Shanghai in September - FAQ
What to pack to Shanghai in September?
As you prepare for your trip to Shanghai 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 Shanghai, 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
- Sandals/Flip-flops: Comfortable for warm climates
- 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
September rainfall patterns in Shanghai
UV exposure in Shanghai during September
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