Xi’an climate

Name: Xi’an
Address: CN

Xi’an is warmest in July, with average highs of 32 °C, and coldest in January, when nights average -4.1 °C. July is the wettest month (142 mm) and January the driest (12 mm). Figures are 1991–2020 climate normals.

Across a full year Xi’an averages 797 mm of rain, 128 days above 25 °C and 88 days below freezing.

China · population 9,600,000 · 1991–2020 normals

Warmest month July 32 °C
Coldest month January -4.1 °C
Driest month January 12 mm
Wettest month July 142 mm
Least cloud December 41 % cloud
Hottest on record July 43 °C
Coldest on record January -15 °C

Month by month

Month	Avg high	Rainfall	Cloud
January	5.8 °C	12 mm	47 %
February	9.6 °C	18 mm	55 %
March	15.5 °C	32 mm	59 %
April	21.8 °C	46 mm	59 %
May	26.3 °C	70 mm	65 %
June	30.4 °C	88 mm	61 %
July	31.6 °C	142 mm	57 %
August	30.0 °C	128 mm	54 %
September	24.7 °C	130 mm	60 %
October	19.1 °C	79 mm	59 %
November	12.9 °C	40 mm	48 %
December	7.3 °C	13 mm	41 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C	Days below 0 °C
January	5.8 °C	-4.1 °C	0.5 °C	19.7 °C	-15.3 °C	0	0	30
February	9.6 °C	-1.5 °C	4.0 °C	21.1 °C	-12.7 °C	0	0	20
March	15.5 °C	3.6 °C	9.5 °C	30.0 °C	-7.1 °C	1	0	5
April	21.8 °C	9.7 °C	15.6 °C	35.1 °C	-0.1 °C	8	2	0
May	26.3 °C	14.7 °C	20.3 °C	37.5 °C	3.6 °C	19	8	0
June	30.4 °C	19.3 °C	24.8 °C	39.7 °C	10.4 °C	26	18	0
July	31.6 °C	22.0 °C	26.7 °C	43.1 °C	14.7 °C	29	21	0
August	30.0 °C	21.0 °C	25.3 °C	40.8 °C	12.9 °C	27	16	0
September	24.7 °C	16.0 °C	20.2 °C	37.6 °C	6.8 °C	14	3	0
October	19.1 °C	9.8 °C	14.3 °C	32.3 °C	-0.4 °C	2	0	0
November	12.9 °C	2.8 °C	7.7 °C	24.6 °C	-6.9 °C	0	0	7
December	7.3 °C	-2.8 °C	1.9 °C	16.6 °C	-12.6 °C	0	0	27

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	12 mm	3	10 h/day	47 %	58 %	8.6 km/h
February	18 mm	4	11 h/day	55 %	59 %	9.5 km/h
March	32 mm	6	12 h/day	59 %	56 %	11 km/h
April	46 mm	7	13 h/day	59 %	55 %	11 km/h
May	70 mm	8	14 h/day	65 %	55 %	11 km/h
June	88 mm	8	14 h/day	61 %	58 %	10 km/h
July	142 mm	11	14 h/day	57 %	66 %	9.7 km/h
August	128 mm	11	13 h/day	54 %	68 %	9.7 km/h
September	130 mm	12	12 h/day	60 %	71 %	9.2 km/h
October	79 mm	10	11 h/day	59 %	69 %	9.0 km/h
November	40 mm	7	10 h/day	48 %	66 %	9.0 km/h
December	13 mm	3	9.9 h/day	41 %	59 %	8.9 km/h

How Xi’an compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Xi’an	32 °C	-4.1 °C	797 mm	128
Xianyang · China	31 °C	-4.0 °C	845 mm	125
Weinan · China	33 °C	-3.5 °C	614 mm	144
Tongchuan · China	31 °C	-5.0 °C	608 mm	118
Tongchuanshi · China	30 °C	-4.7 °C	613 mm	113
Shangluo · China	29 °C	-4.7 °C	782 mm	105
Huayin · China	32 °C	-3.0 °C	994 mm	145

Planning a trip? See the best time to visit Xi’an.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.