Xi'an Weather in September

September brings relief from the summer heat, with warm days and cooler nights. It's a pleasant month, though rain is still possible. Tourist crowds are moderate before the October holiday.

Pack layers: short sleeves for warm days, a light jacket for evenings. An umbrella is still useful. Comfortable walking shoes for exploring.

Mid-Autumn Festival may bring short travel peaks; book ahead. The weather is great for sightseeing, but carry rain gear. Visit popular sites early to avoid crowds.