Dali weather in September
September in Dali: nice, soaked, with clean air — fine if you can take 24 rainy days.
#10 of 12 months in Dali · #534 of 897 destinations to visit in September · comfort 79/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
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Dali climate normals — September
| Daytime high | 23°C / 73°F | 😎 nice |
|---|---|---|
| Nighttime low | 16°C / 61°F | |
| Rainfall | 171 mm / 6.7 in | ⛈ soaked |
| Rainy days | 24 days | |
| Humidity | 85% | 💦 very humid |
| Dew point | 16°C / 61°F | |
| Sunshine | 8.3 h/day | |
| Daylight | 12.3 h | |
| Wind | 7 km/h / 5 mph | |
| Air quality (US AQI) | 47 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Dali in September — FAQ
- Is September a good time to visit Dali?
- September in Dali: nice, soaked, with clean air — fine if you can take 24 rainy days. It ranks #10 of 12 months for Dali on SeasonMap's comfort score (79/100).
- What is the weather like in Dali in September?
- In September, Dali averages a daily high of 22.9°C and a low of 16.1°C, with about 170.5 mm of rain over roughly 24.4 rainy days.
- What is the air quality in Dali in September?
- Dali has a mean US Air Quality Index of about 47 in September.