WanderWhen

Hangzhou weather in September

September is a fair shoulder-season month in Hangzhou — decent conditions with some trade-offs. Expect highs around 29°C, lows near 22°C, and about 12.5 days with rain.

6.6 · Fairtravel score for September
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Avg high
29°C
Avg low
22°C
Rainfall
121 mm
Rain days
12.5
Sunshine
8.3 h/day
Daylight
12.2 h

What to pack for Hangzhou in September

  • light, breathable clothing
  • sun protection (hat, SPF 50)
  • a compact umbrella or rain shell — rain is frequent
  • expect humid, sticky conditions

Humidity averages 80%; max daily wind around 15 km/h.

How September compares

January: 4.4/10 JFebruary: 4.1/10 FMarch: 7.8/10 MApril: 8.3/10 AMay: 8.3/10 MJune: 4.8/10 JJuly: 2.2/10 JAugust: 2.2/10 ASeptember: 6.6/10 SOctober: 9.2/10 ONovember: 8.9/10 NDecember: 6.0/10 D

Best months in Hangzhou: October–November. See the full best time to visit Hangzhou guide.

Hangzhou in September: the details

In September, Hangzhou sees average daytime highs of 29°C (84°F) and overnight lows of 22°C (71°F). Rainfall totals roughly 121 mm across 12.5 rainy days, and the sun shines about 8.3 hours per day with 12.2 hours of daylight mid-month. Relative humidity averages 80%.

These figures are climate normals computed from the ERA5 weather reanalysis (2019–2024) for Hangzhou, China (30.29, 120.16) — see our methodology. Actual conditions vary year to year.

Where should you go next month?

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