WanderWhen

Xi’an weather in September

September is one of the best months to visit Xi’an. Expect highs around 27°C, lows near 18°C, and about 9.7 days with rain.

9.0 · Excellenttravel score for September
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Avg high
27°C
Avg low
18°C
Rainfall
121 mm
Rain days
9.7
Sunshine
7.7 h/day
Daylight
12.2 h

What to pack for Xi’an in September

  • t-shirts and light layers
  • a light jacket for evenings
  • a compact umbrella or rain shell — rain is frequent

Humidity averages 72%; max daily wind around 14 km/h.

How September compares

January: 3.8/10 JFebruary: 5.7/10 FMarch: 10.0/10 MApril: 9.7/10 AMay: 9.0/10 MJune: 5.6/10 JJuly: 4.6/10 JAugust: 4.9/10 ASeptember: 9.0/10 SOctober: 8.5/10 ONovember: 7.0/10 NDecember: 4.5/10 D

Best months in Xi’an: March–April. See the full best time to visit Xi’an guide.

Xi’an in September: the details

In September, Xi’an sees average daytime highs of 27°C (80°F) and overnight lows of 18°C (64°F). Rainfall totals roughly 121 mm across 9.7 rainy days, and the sun shines about 7.7 hours per day with 12.2 hours of daylight mid-month. Relative humidity averages 72%.

These figures are climate normals computed from the ERA5 weather reanalysis (2019–2024) for Xi’an, China (34.26, 108.93) — see our methodology. Actual conditions vary year to year.

Where should you go next month?

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