Wuxi climate

Name: Wuxi
Address: CN

Wuxi is warmest in July, with average highs of 31 °C, and coldest in January, when nights average 0.05 °C. June is the wettest month (263 mm) and December the driest (47 mm). Figures are 1991–2020 climate normals.

Across a full year Wuxi averages 1,354 mm of rain, 137 days above 25 °C and 36 days below freezing.

China · population 4,396,835 · 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 31 °C
Coldest month January 0.05 °C
Driest month December 47 mm
Wettest month June 263 mm
Least cloud December 49 % cloud
Hottest on record August 39 °C
Coldest on record January -11 °C

What to expectWuxi through the year

Wuxi has a clear annual cycle: average daily highs run from 7.9 °C in January to 31 °C in July, a swing of 24 °C in mean temperature across the year.

Counted across a normal year, 137 days a year reach 25 °C, 59 of them reach 30 °C, 36 nights drop below freezing. The warmest reading in the 1991–2020 record is 39 °C, in August.

Rain is strongly seasonal. June averages 263 mm against 47 mm in December — 5.6 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	7.9 °C	69 mm	57 %
February	10.2 °C	72 mm	62 %
March	14.4 °C	102 mm	66 %
April	20.3 °C	109 mm	66 %
May	25.2 °C	133 mm	67 %
June	28.1 °C	263 mm	76 %
July	31.5 °C	182 mm	69 %
August	31.2 °C	170 mm	61 %
September	27.3 °C	87 mm	56 %
October	22.5 °C	59 mm	51 %
November	16.7 °C	61 mm	51 %
December	10.2 °C	47 mm	49 %

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	7.9 °C	0.1 °C	4.0 °C	19.4 °C	-10.7 °C	0	0	16
February	10.2 °C	2.0 °C	6.0 °C	24.3 °C	-7.2 °C	0	0	9
March	14.4 °C	6.2 °C	10.1 °C	27.7 °C	-5.3 °C	0	0	1
April	20.3 °C	11.9 °C	15.8 °C	32.2 °C	0.3 °C	4	0	0
May	25.2 °C	17.2 °C	20.9 °C	36.4 °C	7.6 °C	16	2	0
June	28.1 °C	21.4 °C	24.5 °C	36.2 °C	14.6 °C	25	8	0
July	31.5 °C	25.7 °C	28.3 °C	38.9 °C	17.3 °C	30	22	0
August	31.2 °C	25.2 °C	27.8 °C	39.0 °C	18.6 °C	30	21	0
September	27.3 °C	20.6 °C	23.6 °C	36.3 °C	12.0 °C	24	5	0
October	22.5 °C	14.8 °C	18.4 °C	31.8 °C	5.4 °C	6	0	0
November	16.7 °C	8.9 °C	12.6 °C	28.2 °C	-4.8 °C	0	0	1
December	10.2 °C	2.3 °C	6.1 °C	20.7 °C	-8.6 °C	0	0	10

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	69 mm	9	10 h/day	57 %	73 %	18 km/h
February	72 mm	9	11 h/day	62 %	73 %	19 km/h
March	102 mm	11	12 h/day	66 %	73 %	21 km/h
April	109 mm	10	13 h/day	66 %	73 %	21 km/h
May	133 mm	10	14 h/day	67 %	74 %	20 km/h
June	263 mm	14	14 h/day	76 %	80 %	19 km/h
July	182 mm	14	14 h/day	69 %	81 %	18 km/h
August	170 mm	14	13 h/day	61 %	80 %	19 km/h
September	87 mm	9	12 h/day	56 %	78 %	18 km/h
October	59 mm	7	11 h/day	51 %	73 %	17 km/h
November	61 mm	7	11 h/day	51 %	73 %	18 km/h
December	47 mm	6	10 h/day	49 %	72 %	18 km/h

How Wuxi 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
Wuxi	31 °C	0.05 °C	1,354 mm	137
Jiangyin · China	31 °C	-0.6 °C	1,254 mm	137
Changzhou · China	31 °C	-0.5 °C	1,258 mm	138
Suzhou · China	32 °C	0.8 °C	1,418 mm	135
Changshu · China	32 °C	-0.2 °C	1,283 mm	138
Yixing · China	31 °C	0.5 °C	1,482 mm	130
Kunshan · China	32 °C	0.4 °C	1,299 mm	136

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

QuestionsCommon questions about Wuxi’s climate

When is the best time to visit Wuxi?

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

How hot does Wuxi get?

In July, the warmest month, daily highs average 31 °C. About 59 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 0.05 °C in January, the coldest month. A normal year has 36 nights below freezing.

Which month is wettest in Wuxi?

June, averaging 263 mm over 14 days with rain. The driest month is December with 47 mm. The year as a whole averages 1,354 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 Wuxi 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: 31.569°, 120.289° (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.