Chongqing weather in September
September in Chongqing: hot, soaked, with very humid — a good time to visit.
#9 of 12 months in Chongqing · #479 of 604 destinations to visit in September · comfort 64/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
Chongqing climate normals — September
| Daytime high | 28°C / 82°F | 🥵 hot |
|---|---|---|
| Nighttime low | 21°C / 70°F | |
| Feels like (high) | 31°C / 88°F | |
| Rainfall | 156 mm / 6.1 in | ⛈ soaked |
| Rainy days | 15 days | |
| Humidity | 76% | 💦 very humid |
| Dew point | 20°C / 68°F | |
| Sunshine | 6.6 h/day | |
| Daylight | 12.3 h | |
| Wind | 10 km/h / 6 mph | |
| Air quality (US AQI) | 98 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Chongqing in September — FAQ
- Is September a good time to visit Chongqing?
- September in Chongqing: hot, soaked, with very humid — a good time to visit. It ranks #9 of 12 months for Chongqing on SeasonMap's comfort score (64/100).
- What is the weather like in Chongqing in September?
- In September, Chongqing averages a daily high of 27.7°C and a low of 21.1°C, with about 155.6 mm of rain over roughly 15 rainy days.
- What is the air quality in Chongqing in September?
- Chongqing has a mean US Air Quality Index of about 98 in September.