WanderWhen

Chengdu weather in September

September is a good month to visit Chengdu. Expect highs around 26°C, lows near 20°C, and about 15.7 days with rain.

7.4 · Goodtravel score for September
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Avg high
26°C
Avg low
20°C
Rainfall
123 mm
Rain days
15.7
Sunshine
6 h/day
Daylight
12.2 h

What to pack for Chengdu in September

  • t-shirts and light layers
  • a light jacket for evenings
  • a compact umbrella or rain shell — rain is frequent
  • expect humid, sticky conditions

Humidity averages 79%; max daily wind around 12 km/h.

How September compares

January: 5.6/10 JFebruary: 6.6/10 FMarch: 8.1/10 MApril: 8.2/10 AMay: 8.1/10 MJune: 6.0/10 JJuly: 3.9/10 JAugust: 3.8/10 ASeptember: 7.4/10 SOctober: 7.5/10 ONovember: 8.6/10 NDecember: 5.8/10 D

Best months in Chengdu: March–May & November. See the full best time to visit Chengdu guide.

Chengdu in September: the details

In September, Chengdu sees average daytime highs of 26°C (79°F) and overnight lows of 20°C (67°F). Rainfall totals roughly 123 mm across 15.7 rainy days, and the sun shines about 6 hours per day with 12.2 hours of daylight mid-month. Relative humidity averages 79%.

These figures are climate normals computed from the ERA5 weather reanalysis (2019–2024) for Chengdu, China (30.67, 104.07) — see our methodology. Actual conditions vary year to year.

Where should you go next month?

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