Weather in Jiangsu for September 2025
High Temperature Warning - See hour by hour.
Until now, September 2025 in Jiangsu is slightly cooler than the historical average by -1 °C.
The forecast for the next days in Jiangsu predicts a temperature of 28.6 °C, which is cooler than the historical average.
In general, the average temperature in Jiangsu at the beginning of September is 33.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 28.9 °C by the end of September.
Jiangsu experiences moderate rainfall in September, with an average of 10 rainy days and a total precipitation of 216.6 mm.
Is September a good time to visit Jiangsu? check out the best time to travel to Jiangsu page.
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Jiangsu Weather September
What’s the Weather Like in Jiangsu This September?
Temperatures trend during September in Jiangsu
September weather in Jiangsu day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Thundery outbreaks possible | 34° /25° | 1.4 mm | 7 | |
| 2 Sept. |  Light rain shower | 33° /25° | 4.6 mm | 8 | |
| 3 Sept. |  Light drizzle | 32° /25° | 1 mm | 7 | |
| 4 Sept. |  Partly cloudy | 34° /25° | 1 mm | 8 | |
| 5 Sept. | Patchy rain possible | 34° /25° | 0.4 mm | 7 | |
| 6 Sept. |  Cloudy | 35° /25° | 0.3 mm | 8 | |
| 7 Sept. | Patchy rain possible | 35° /25° | 1 mm | 8 | |
| 8 Sept. | Patchy rain possible | 34° /24° | 2.8 mm | 7 | |
| 9 Sept. | Patchy rain possible | 32° /25° | 6 mm | 7 | |
| 10 Sept. | Light rain shower | 32° /23° | 3.8 mm | 7 | |
| 11 Sept. |  Moderate or heavy rain shower | 28° /24° | 13.1 mm | 6 | |
| 12 Sept. | Patchy rain possible | 33° /25° | 18 mm | 7 | |
| 13 Sept. |  Sunny | 31° /25° | 1.1 mm | 7 | |
| 14 Sept. | Patchy rain possible | 33° /25° | 6.1 mm | 7 | |
| 15 Sept. | Light rain shower | 32° /24° | 1.6 mm | 7 | |
| 16 Sept. |  Torrential rain shower | 27° /25° | 84.2 mm | 6 | |
| 17 Sept. | Patchy rain possible | 32° /25° | 0.8 mm | 1.5 | |
| 18 Sept. | Patchy rain possible | 28° /23° | 1.8 mm | 1.2 | |
| 19 Sept. | Partly cloudy | 29° /23° | 0 mm | 1.1 | |
| 20 Sept. | Patchy rain possible | 24° /21° | 0.2 mm | 1.1 | |
| 21 Sept. | Partly cloudy | 28° /21° | 0 mm | 6 | |
| 22 Sept. | Patchy rain possible | 28° /21° | 0.2 mm | 5 | |
| 23 Sept. | Patchy rain possible | 29° /22° | 0.4 mm | 6 | |
| 24 Sept. | Patchy rain possible | 28° /22° | 0.1 mm | 5 | |
| 25 Sept. | Partly cloudy | 29° /21° | 0 mm | 6 | |
| 26 Sept. | Sunny | 31° /21° | 0 mm | 7 | |
| 27 Sept. | Patchy rain possible | 30° /23° | 0.1 mm | 6 | |
| 28 Sept. | Partly cloudy | 31° /22° | 0 mm | 7 | |
| 29 Sept. | Sunny | 28° /20° | 0 mm | 6 | |
| 30 Sept. | Sunny | 25° /18° | 0 mm | 6 | |
| Next | |||||
Jiangsu weather in September vs August vs October
| August | September | October | |
|---|---|---|---|
| Weather | Patchy rain possible | Patchy rain possible | Patchy rain possible |
| Temperatures | 35°/26° | 31°/24° | 22°/16° |
| Rainfall | 53 mm | 217 mm | 98 mm |
| Wind | 13.8 km/h | 18.7 km/h | 16.8 km/h |
| Humidity | 70% | 77% | 73% |
| Rainy days | 10 days | 10 days | 13 days |
| Dry days | 21 days | 20 days | 18 days |
Planning a trip to Jiangsu? Discover the best time to visit
Jiangsu in September - FAQ
What to pack to Jiangsu in September?
As you prepare for your trip to Jiangsu 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 Jiangsu, 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
- Insect Repellent: For destinations with mosquitos or other insects
September rainfall patterns in Jiangsu
UV exposure in Jiangsu during September
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Where is Jiangsu?Get accurate weather forecasts for Jiangsu, located at latitude 31.304 and longitude 120.595. Stay updated with localized weather information tailored for Jiangsu.