Chengdu climate

Name: Chengdu
Address: CN

Chengdu is warmest in July, with average highs of 30 °C, and coldest in January, when nights average 2.6 °C. July is the wettest month (292 mm) and January the driest (4.9 mm). Figures are 1991–2020 climate normals.

Across a full year Chengdu averages 1,055 mm of rain, 137 days above 25 °C and 7 days below freezing.

China · population 13,568,357 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month July 30 °C
Coldest month January 2.6 °C
Driest month January 5 mm
Wettest month July 292 mm
Least cloud December 60 % cloud
Hottest on record August 39 °C
Coldest on record December -5.4 °C

What to expectChengdu through the year

Chengdu has a clear annual cycle: average daily highs run from 9.8 °C in January to 30 °C in July, a swing of 20 °C in mean temperature across the year.

Counted across a normal year, 137 days a year reach 25 °C, 54 of them reach 30 °C, 7 nights drop below freezing. The warmest reading in the 1991–2020 record is 39 °C, in August.

Rain is strongly seasonal. July averages 292 mm against 5 mm in January — 60 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	9.8 °C	5 mm	64 %
February	12.4 °C	9 mm	68 %
March	17.2 °C	24 mm	72 %
April	23.1 °C	46 mm	74 %
May	27.1 °C	70 mm	76 %
June	29.1 °C	133 mm	78 %
July	30.0 °C	292 mm	76 %
August	29.5 °C	274 mm	72 %
September	25.5 °C	136 mm	78 %
October	20.7 °C	42 mm	77 %
November	16.2 °C	17 mm	68 %
December	11.1 °C	6 mm	60 %

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	9.8 °C	2.6 °C	6.2 °C	18.2 °C	-4.0 °C	0	0	4
February	12.4 °C	4.6 °C	8.7 °C	22.7 °C	-2.8 °C	0	0	2
March	17.2 °C	8.6 °C	13.1 °C	32.4 °C	1.2 °C	2	0	0
April	23.1 °C	13.8 °C	18.4 °C	35.4 °C	4.0 °C	10	2	0
May	27.1 °C	18.1 °C	22.4 °C	37.6 °C	8.9 °C	22	7	0
June	29.1 °C	21.2 °C	24.9 °C	37.8 °C	13.5 °C	26	12	0
July	30.0 °C	22.8 °C	26.1 °C	37.6 °C	16.8 °C	30	16	0
August	29.5 °C	22.4 °C	25.7 °C	38.7 °C	15.4 °C	28	14	0
September	25.5 °C	19.2 °C	22.1 °C	35.2 °C	12.5 °C	16	3	0
October	20.7 °C	14.7 °C	17.5 °C	30.2 °C	7.0 °C	3	0	0
November	16.2 °C	9.5 °C	12.8 °C	24.3 °C	0.6 °C	0	0	0
December	11.1 °C	4.1 °C	7.6 °C	18.1 °C	-5.4 °C	0	0	2

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	5 mm	2	10 h/day	64 %	75 %	10 km/h
February	9 mm	3	11 h/day	68 %	74 %	11 km/h
March	24 mm	6	12 h/day	72 %	70 %	12 km/h
April	46 mm	8	13 h/day	74 %	67 %	13 km/h
May	70 mm	10	14 h/day	76 %	64 %	13 km/h
June	133 mm	13	14 h/day	78 %	71 %	11 km/h
July	292 mm	20	14 h/day	76 %	81 %	10 km/h
August	274 mm	20	13 h/day	72 %	81 %	11 km/h
September	136 mm	14	12 h/day	78 %	79 %	11 km/h
October	42 mm	8	11 h/day	77 %	78 %	9.8 km/h
November	17 mm	5	11 h/day	68 %	76 %	10 km/h
December	6 mm	2	10 h/day	60 %	75 %	9.8 km/h

How Chengdu 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
Chengdu	30 °C	2.6 °C	1,055 mm	137
Deyang · China	30 °C	2.3 °C	956 mm	128
Meishan · China	30 °C	3.3 °C	1,158 mm	137
Ziyang · China	30 °C	3.6 °C	1,058 mm	141
Luojiang · China	29 °C	2.0 °C	959 mm	123
Mianyang · China	30 °C	1.6 °C	1,000 mm	131
Leshan · China	30 °C	3.9 °C	1,239 mm	135

Planning a trip? See the best time to visit Chengdu.

QuestionsCommon questions about Chengdu’s climate

When is the best time to visit Chengdu?

That depends on what you want, so the honest answer is a comparison rather than a single month. April, May, September sit closest to 20 °C on average, July is the warmest month and January the driest. The month-by-month table above has the full picture.

How hot does Chengdu get?

In July, the warmest month, daily highs average 30 °C. About 54 days a year pass 30 °C. The highest value in the 1991–2020 record is 39 °C.

How cold does it get in winter?

Nights average 2.6 °C in January, the coldest month. A normal year has 7 nights below freezing.

Which month is wettest in Chengdu?

July, averaging 292 mm over 20 days with rain. The driest month is January with 5 mm. The year as a whole averages 1,055 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Chengdu rather than what any particular week will bring. Individual years can differ substantially from the normal.

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
Data point: 30.667°, 104.067° (the coordinates the reanalysis values are taken for)
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.