Kunming weather in September
September in Kunming: warm, soaked, with very humid — an excellent time to visit.
#6 of 12 months in Kunming · #306 of 604 destinations to visit in September · comfort 80/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Kunming climate normals — September
| Daytime high | 23°C / 73°F | 🌤 warm |
|---|---|---|
| Nighttime low | 16°C / 60°F | |
| Feels like (high) | 24°C / 75°F | |
| Rainfall | 154 mm / 6.1 in | ⛈ soaked |
| Rainy days | 21 days | |
| Humidity | 83% | 💦 very humid |
| Dew point | 15°C / 60°F | |
| Sunshine | 8.7 h/day | |
| Daylight | 12.3 h | |
| Wind | 13 km/h / 8 mph | |
| Air quality (US AQI) | 58 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Kunming in September — FAQ
- Is September a good time to visit Kunming?
- September in Kunming: warm, soaked, with very humid — an excellent time to visit. It ranks #6 of 12 months for Kunming on SeasonMap's comfort score (80/100).
- What is the weather like in Kunming in September?
- In September, Kunming averages a daily high of 22.5°C and a low of 15.7°C, with about 154.2 mm of rain over roughly 20.8 rainy days.
- What is the air quality in Kunming in September?
- Kunming has a mean US Air Quality Index of about 58 in September.