Avg high
28°C
Avg low
21°C
Rainfall
172 mm
Rain days
11.7
Sunshine
8.5 h/day
Daylight
12.2 h
What to pack for Suzhou 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 16 km/h.
How September compares
Best months in Suzhou: April–May & October–November. See the full best time to visit Suzhou guide.
Suzhou in September: the details
In September, Suzhou sees average daytime highs of 28°C (83°F) and overnight lows of 21°C (70°F). Rainfall totals roughly 172 mm across 11.7 rainy days, and the sun shines about 8.5 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 Suzhou, China (31.3, 120.6) — see our methodology. Actual conditions vary year to year.
Where should you go next month?
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