Weather in Yunnan for September 2025
Gale Warning - See hour by hour.
Until now, September 2025 in Yunnan has been nearly identical to the historical average, with a temperature of 20.6 °C (showing only a slight deviation of 0.1 °C).
The forecast for the upcoming days in Yunnan predicts a temperature of 22.6 °C, which is slightly above the historical average.
In general, the average temperature in Yunnan at the beginning of September is 20.9 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 22.6 °C by the end of September.
Yunnan experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 244.9 mm.
Is September a good time to visit Yunnan? check out the best time to travel to Yunnan page.
New! Chat with our AI weatherman - it’s amazing and free.
Official Weather Alert ⚠️
Temperatures
Rain 🌧️
More
Yunnan Weather September
What’s the Weather Like in Yunnan This September?
Temperatures trend during September in Yunnan
September weather in Yunnan day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain shower | 20° /13° | 13.8 mm | 4 | |
| 2 Sept. | Light rain shower | 19° /13° | 9.7 mm | 5 | |
| 3 Sept. | Light rain shower | 23° /14° | 7.9 mm | 5 | |
| 4 Sept. | Light rain shower | 20° /13° | 11 mm | 5 | |
| 5 Sept. | Light rain shower | 20° /13° | 7.7 mm | 5 | |
| 6 Sept. | Patchy rain possible | 23° /14° | 7.5 mm | 5 | |
| 7 Sept. | Patchy rain possible | 21° /14° | 10.6 mm | 5 | |
| 8 Sept. |  Patchy light rain with thunder | 22° /13° | 8.6 mm | 5 | |
| 9 Sept. | Patchy rain possible | 21° /14° | 12.9 mm | 5 | |
| 10 Sept. | Light rain shower | 20° /13° | 15.5 mm | 5 | |
| 11 Sept. | Light rain shower | 20° /14° | 11.1 mm | 5 | |
| 12 Sept. | Light rain shower | 22° /14° | 9 mm | 5 | |
| 13 Sept. | Light rain shower | 17° /12° | 20.4 mm | 4 | |
| 14 Sept. | Patchy light rain with thunder | 19° /12° | 8.7 mm | 4 | |
| 15 Sept. | Patchy light rain with thunder | 18° /12° | 13.1 mm | 4 | |
| 16 Sept. | Patchy rain possible | 22° /14° | 3.6 mm | 2.6 | |
| 17 Sept. | Patchy rain possible | 22° /15° | 3.3 mm | 2.3 | |
| 18 Sept. |  Moderate rain | 23° /15° | 14.5 mm | 2.4 | |
| 19 Sept. | Moderate rain | 22° /14° | 20 mm | 2.1 | |
| 20 Sept. | Moderate rain | 23° /14° | 11.8 mm | 2.9 | |
| 21 Sept. | Patchy rain possible | 22° /16° | 3 mm | 4 | |
| 22 Sept. | Patchy rain possible | 23° /16° | 2.4 mm | 4 | |
| 23 Sept. | Moderate rain | 20° /15° | 13.6 mm | 4 | |
| 24 Sept. | Moderate rain | 22° /15° | 5 mm | 4 | |
| 25 Sept. |  Sunny | 24° /14° | 0 mm | 5 | |
| 26 Sept. | Sunny | 24° /13° | 0 mm | 5 | |
| 27 Sept. | Sunny | 24° /13° | 0 mm | 5 | |
| 28 Sept. | Sunny | 24° /13° | 0 mm | 5 | |
| 29 Sept. | Patchy rain possible | 21° /16° | 1.5 mm | 4 | |
| 30 Sept. |  Patchy light drizzle | 19° /13° | 13.6 mm | 4 | |
| Next | |||||
Yunnan weather in September vs August vs October
| August | September | October | |
|---|---|---|---|
| Weather | Patchy rain possible | Patchy rain possible | Patchy rain possible |
| Temperatures | 21°/14° | 20°/13° | 17°/10° |
| Rainfall | 262 mm | 245 mm | 141 mm |
| Wind | 7 km/h | 6.3 km/h | 7.5 km/h |
| Humidity | 80% | 80% | 83% |
| Rainy days | 27 days | 25 days | 20 days |
| Dry days | 4 days | 5 days | 11 days |
Planning a trip to Yunnan? Discover the best time to visit
Yunnan in September - FAQ
What to pack to Yunnan in September?
As you prepare for your trip to Yunnan 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 Yunnan, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
- Umbrellas/Raincoats: For rainy days
September rainfall patterns in Yunnan
UV exposure in Yunnan during September
Quick links
Where is Yunnan?Get accurate weather forecasts for Yunnan, located at latitude 25.585 and longitude 100.212. Stay updated with localized weather information tailored for Yunnan.