Wuxi climate — normals and trends

Q: What is the climate of Wuxi?

Wuxi has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 18.6 °C and it receives 1,440 mm of precipitation per year.

Q: What is the hottest day ever recorded in Wuxi?

The hottest day measured in Wuxi between 1940 and 2025 was 5 August 2010, reaching 41.9 °C.

Q: What is the coldest day in Wuxi?

The coldest day measured in Wuxi between 1940 and 2025 was 29 December 1991, at -13.1 °C.

Q: Does it snow in Wuxi?

Yes. Wuxi gets on average 7.3 cm of snow per year and has around 9 frost days.

Q: Has the climate of Wuxi warmed?

Yes: Wuxi warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Wuxi?

The wettest day measured in Wuxi between 1940 and 2025 was 6 August 1994, with 157 mm of rain in 24 hours.

Q: What was the windiest day in Wuxi?

The windiest day measured in Wuxi between 1940 and 2025 was 8 June 1946, with winds reaching 42.4 km/h.

Q: What is the warmest month in Wuxi?

The warmest month in Wuxi is July (29.6 °C on average); the coldest is January (6.7 °C).

Q: How much does it rain in Wuxi?

Wuxi receives on average 1,440 mm of precipitation per year, spread over about 161 rainy days.

Q: Is it sunny in Wuxi?

Wuxi gets on average 7.1 hours of sunshine per day, roughly 2,592 hours per year over 1940-2025.

Wuxi (China) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 18.6 °C and it receives 1,440 mm of precipitation per year.

These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.

The warmest month is July (29.6 °C on average) and the coldest is January (6.7 °C). Rainfall peaks in June.

Wuxi averages 9 frost days, 101 hot days (≥ 30 °C) and 161 rainy days per year.

Wuxi has warmed by +1.0 °C between 1940 and 2025, or +0.11 °C per decade. This trend is statistically significant.

The number of frost days there went from about 13 to 5 per year over the period.

The hottest day of the period reached 41.9 °C (on 5 August 2010) and the coldest -13.1 °C (on 29 December 1991).

Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.

Climate normals · ERA5

WuxiHunan

coords: 26.58°, 111.86°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthJulyColdest monthJanuaryWettest monthJuneDriest monthDecember

Mean daily temperature

18.6°C

Average daily high

22.4°C

Average daily low

15.3°C

Annual rainfall

1,440mm

Sunshine / day

7.1h

Mean relative humidity

76%

Average peak wind

12.1km/h

Seasonal range

22.9°C

Frost days (< 0 °C)

9 d/yr

Hot days (≥ 30 °C)

101 d/yr

Rainy days (≥ 1 mm)

161 d/yr

Annual snowfall

7.3 cm

Average feels-like high

23.5 °C

Average feels-like low

15.9 °C

Average peak gust

28.4 km/h

Tropical nights (≥ 20 °C)

136 d/yr

Solar radiation

12.9 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.0 °C

since 1940

+0.1 °C per decade · r² = 0.21 · p = < 0.001

19402025

Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).

A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.

Records for the period

Hottest day

41.9 °C

5 August 2010

Coldest day

-13.1 °C

29 December 1991

Wettest day

157 mm

6 August 1994

Windiest day

42.4 km/h

8 June 1946

Strongest gust

88.9 km/h

9 June 1946

Hottest feels-like

46.7 °C

15 July 2002

Coldest feels-like

-16.9 °C

29 December 1991

Snowiest day

18.1 cm

6 January 2003

Sunniest day

13.0 h

27 June 1985

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	38.8 °C5 September 2025	-1.8 °C9 February 2025	20.3 °C	1,234 mm	137	2
2024	39.9 °C25 July 2024	-2.7 °C24 January 2024	19.7 °C	1,754 mm	107	9
2023	39.0 °C5 August 2023	-2.3 °C25 December 2023	19.9 °C	1,120 mm	115	7
2022	39.6 °C23 August 2022	-0.8 °C18 December 2022	19.5 °C	1,223 mm	118	1
2021	39.5 °C31 July 2021	-1.8 °C12 January 2021	20.0 °C	1,147 mm	128	8
2020	38.2 °C9 August 2020	-0.6 °C30 January 2020	19.3 °C	1,179 mm	107	2
2019	39.2 °C20 August 2019	-0.7 °C1 January 2019	18.9 °C	1,440 mm	112	2
2018	38.9 °C4 July 2018	-3.7 °C6 February 2018	19.4 °C	1,214 mm	115	14
2017	39.7 °C21 August 2017	-0.7 °C21 December 2017	19.4 °C	1,380 mm	105	2
2016	40.7 °C31 July 2016	-2.6 °C25 January 2016	19.2 °C	1,432 mm	107	4
2015	37.2 °C13 July 2015	-0.3 °C6 February 2015	19.0 °C	1,633 mm	86	1
2014	38.1 °C12 September 2014	-1.2 °C11 February 2014	19.2 °C	1,271 mm	103	8
2013	40.7 °C13 August 2013	-2.0 °C4 January 2013	19.5 °C	1,167 mm	114	10
2012	40.1 °C22 July 2012	-2.2 °C31 December 2012	18.1 °C	1,319 mm	101	5
2011	41.0 °C25 July 2011	-3.6 °C12 January 2011	18.7 °C	844 mm	111	9
2010	41.9 °C5 August 2010	-1.3 °C16 December 2010	18.9 °C	1,484 mm	92	4
2009	38.7 °C18 July 2009	-2.3 °C14 January 2009	19.1 °C	1,038 mm	116	5
2008	40.8 °C21 August 2008	-2.7 °C15 February 2008	19.1 °C	1,133 mm	118	24
2007	39.6 °C13 July 2007	0.6 °C27 January 2007	19.9 °C	1,056 mm	113	0
2006	39.7 °C16 August 2006	-1.9 °C7 January 2006	19.4 °C	1,201 mm	108	4
2005	40.9 °C29 July 2005	-2.6 °C1 January 2005	19.0 °C	1,251 mm	115	3
2004	39.6 °C11 August 2004	-2.2 °C22 January 2004	19.1 °C	1,316 mm	100	4
2003	40.1 °C31 July 2003	-4.7 °C7 January 2003	19.0 °C	1,073 mm	108	9
2002	37.5 °C15 July 2002	-2.5 °C26 December 2002	18.9 °C	1,973 mm	86	5
2001	37.3 °C30 July 2001	-0.6 °C26 December 2001	18.7 °C	1,560 mm	94	1
2000	40.0 °C16 July 2000	-1.1 °C27 January 2000	18.4 °C	1,492 mm	117	6
1999	36.3 °C8 August 1999	-3.6 °C23 December 1999	18.9 °C	1,685 mm	84	5
1998	40.2 °C10 August 1998	-0.8 °C20 January 1998	19.8 °C	1,462 mm	118	1
1997	35.5 °C30 July 1997	-1.6 °C11 January 1997	18.3 °C	1,949 mm	92	5
1996	35.7 °C26 July 1996	-1.1 °C18 February 1996	18.1 °C	1,595 mm	93	5
1995	39.2 °C5 September 1995	-1.8 °C30 December 1995	18.7 °C	1,508 mm	106	6
1994	37.0 °C2 July 1994	-2.4 °C23 January 1994	18.3 °C	2,669 mm	91	5
1993	35.9 °C27 June 1993	-4.0 °C16 January 1993	17.9 °C	1,637 mm	81	9
1992	38.8 °C31 July 1992	-2.5 °C15 January 1992	18.5 °C	1,359 mm	99	2
1991	39.8 °C29 July 1991	-13.1 °C29 December 1991	18.2 °C	1,581 mm	100	5
1990	40.9 °C16 August 1990	-3.1 °C1 February 1990	18.6 °C	1,586 mm	101	4
1989	38.9 °C16 August 1989	-3.2 °C14 January 1989	18.0 °C	1,336 mm	86	6
1988	39.3 °C19 July 1988	-2.4 °C19 January 1988	18.1 °C	1,424 mm	93	2
1987	37.7 °C6 August 1987	-1.1 °C27 January 1987	18.7 °C	1,559 mm	102	5
1986	37.0 °C30 July 1986	-0.7 °C27 January 1986	18.4 °C	1,264 mm	112	4
1985	39.6 °C16 July 1985	-1.8 °C16 December 1985	18.2 °C	1,380 mm	103	13
1984	39.7 °C30 July 1984	-4.7 °C22 January 1984	17.4 °C	1,599 mm	100	20
1983	39.1 °C6 August 1983	-2.7 °C24 January 1983	18.7 °C	1,627 mm	114	8
1982	37.6 °C26 July 1982	-2.5 °C19 December 1982	18.2 °C	1,740 mm	83	5
1981	37.6 °C19 August 1981	-1.3 °C11 January 1981	18.1 °C	1,684 mm	103	7
1980	38.1 °C3 July 1980	-4.9 °C31 January 1980	18.1 °C	1,465 mm	91	11
1979	39.6 °C7 August 1979	-3.7 °C1 February 1979	18.9 °C	1,310 mm	93	7
1978	38.7 °C2 August 1978	-1.8 °C18 February 1978	18.4 °C	1,708 mm	103	11
1977	37.6 °C10 August 1977	-9.8 °C10 February 1977	18.4 °C	1,627 mm	86	20
1976	38.1 °C6 August 1976	-3.2 °C28 December 1976	17.8 °C	1,985 mm	80	7
1975	39.1 °C30 July 1975	-3.0 °C30 December 1975	18.4 °C	1,797 mm	100	17
1974	36.8 °C13 September 1974	-3.1 °C7 February 1974	18.2 °C	1,459 mm	95	13
1973	37.4 °C7 August 1973	-2.9 °C26 December 1973	18.7 °C	1,625 mm	98	5
1972	38.4 °C9 July 1972	-7.4 °C9 February 1972	18.2 °C	1,578 mm	97	12
1971	41.2 °C26 July 1971	-1.8 °C3 January 1971	18.3 °C	1,307 mm	98	6
1970	37.1 °C2 August 1970	-4.9 °C5 January 1970	17.8 °C	1,768 mm	90	11
1969	37.3 °C27 July 1969	-4.9 °C5 February 1969	18.1 °C	1,457 mm	107	25
1968	38.1 °C30 July 1968	-1.1 °C3 January 1968	18.7 °C	1,696 mm	101	2
1967	39.2 °C18 July 1967	-5.2 °C16 January 1967	18.1 °C	1,431 mm	109	25
1966	37.1 °C14 August 1966	-3.3 °C28 December 1966	18.9 °C	1,196 mm	104	12
1965	36.8 °C21 July 1965	-2.9 °C17 December 1965	17.9 °C	1,641 mm	68	8
1964	38.8 °C4 September 1964	-3.1 °C19 February 1964	18.5 °C	1,284 mm	110	16
1963	41.0 °C15 August 1963	-3.3 °C14 January 1963	19.6 °C	1,049 mm	125	7
1962	40.0 °C29 July 1962	-2.0 °C25 January 1962	18.6 °C	1,705 mm	92	7
1961	40.4 °C23 August 1961	-2.9 °C15 January 1961	18.9 °C	2,065 mm	97	4
1960	40.1 °C2 August 1960	-3.0 °C24 January 1960	18.5 °C	1,317 mm	106	11
1959	38.3 °C24 July 1959	-1.3 °C13 January 1959	18.5 °C	1,587 mm	108	4
1958	37.4 °C18 August 1958	-2.4 °C2 February 1958	18.5 °C	1,079 mm	103	11
1957	38.0 °C14 August 1957	-7.2 °C11 February 1957	18.0 °C	1,322 mm	93	17
1956	37.2 °C3 August 1956	-4.4 °C9 January 1956	18.1 °C	1,305 mm	112	15
1955	34.1 °C12 September 1955	-6.2 °C11 January 1955	18.4 °C	1,206 mm	98	20
1954	35.3 °C28 July 1954	-3.5 °C31 December 1954	18.2 °C	1,395 mm	114	21
1953	41.3 °C13 August 1953	-3.0 °C19 January 1953	19.0 °C	1,194 mm	121	8
1952	35.2 °C12 September 1952	-4.0 °C18 February 1952	18.2 °C	1,292 mm	99	13
1951	37.1 °C1 August 1951	-8.3 °C14 January 1951	17.9 °C	1,650 mm	93	16
1950	35.3 °C18 July 1950	-1.1 °C14 February 1950	18.3 °C	1,844 mm	55	6
1949	34.4 °C14 August 1949	-4.5 °C9 January 1949	18.7 °C	1,586 mm	93	7
1948	34.2 °C18 August 1948	-5.5 °C25 January 1948	18.7 °C	1,288 mm	84	9
1947	35.1 °C27 August 1947	-3.0 °C20 December 1947	18.4 °C	1,578 mm	80	8
1946	40.5 °C18 July 1946	-2.2 °C7 January 1946	20.9 °C	547 mm	158	7
1945	35.7 °C28 July 1945	-3.5 °C4 February 1945	17.6 °C	878 mm	97	27
1944	33.9 °C14 July 1944	-4.2 °C21 December 1944	18.0 °C	1,417 mm	81	19
1943	33.2 °C29 June 1943	-3.4 °C12 January 1943	18.7 °C	1,329 mm	72	8
1942	34.0 °C6 August 1942	-1.0 °C1 January 1942	18.8 °C	1,475 mm	83	7
1941	32.0 °C3 July 1941	-3.7 °C29 December 1941	18.3 °C	1,636 mm	57	6
1940	35.6 °C14 August 1940	-7.8 °C23 January 1940	18.8 °C	1,192 mm	114	10

Normals computed over complete calendar years 1940–2025.

A specific year

Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?

Year

Across the whole year

Average daily high

24.6 °C

+2.2 °C

Hot days (≥ 30 °C)

137 d/yr

+36

Frost days (< 0 °C)

2 d/yr

-7

Annual rainfall

1235 mm

-206 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	14.9 °C	+4.8 °C	30 mm	-29 mm
Feb	10.5 °C	-1.1 °C	58 mm	-24 mm
Mar	18.6 °C	+2.1 °C	89 mm	-39 mm
Apr	26.5 °C	+4.0 °C	134 mm	-51 mm
May	28.3 °C	+1.4 °C	225 mm	-2 mm
Jun	30.6 °C	+0.6 °C	193 mm	-41 mm
Jul	34.6 °C	+0.9 °C	202 mm	+87 mm
Aug	34.5 °C	+1.3 °C	73 mm	-74 mm
Sep	32.4 °C	+2.7 °C	92 mm	+16 mm
Oct	27.4 °C	+3.2 °C	24 mm	-50 mm
Nov	19.2 °C	+0.9 °C	79 mm	+10 mm
Dec	16.6 °C	+4.1 °C	38 mm	-9 mm

The year's extremes

Hottest day

38.8 °C

5 Sep 2025

Coldest day

-1.8 °C

9 Feb 2025

Wettest day

50.9 mm

12 Apr 2025

Windiest day

35.8 km/h

2 Mar 2025

Strongest gust

69.1 km/h

8 May 2025

Hottest feels-like

45.5 °C

5 Jul 2025

Coldest feels-like

-5.2 °C

9 Feb 2025

Sunniest day

13.0 h

28 Apr 2025

What was the weather like that day?

Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.

Date

Frequently asked questions

What is the climate of Wuxi?

Wuxi has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 18.6 °C and it receives 1,440 mm of precipitation per year.

What is the hottest day ever recorded in Wuxi?

The hottest day measured in Wuxi between 1940 and 2025 was 5 August 2010, reaching 41.9 °C.

What is the coldest day in Wuxi?

The coldest day measured in Wuxi between 1940 and 2025 was 29 December 1991, at -13.1 °C.

Does it snow in Wuxi?

Yes. Wuxi gets on average 7.3 cm of snow per year and has around 9 frost days.

Has the climate of Wuxi warmed?

Yes: Wuxi warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Wuxi?

The wettest day measured in Wuxi between 1940 and 2025 was 6 August 1994, with 157 mm of rain in 24 hours.

What was the windiest day in Wuxi?

The windiest day measured in Wuxi between 1940 and 2025 was 8 June 1946, with winds reaching 42.4 km/h.

What is the warmest month in Wuxi?

The warmest month in Wuxi is July (29.6 °C on average); the coldest is January (6.7 °C).

How much does it rain in Wuxi?

Wuxi receives on average 1,440 mm of precipitation per year, spread over about 161 rainy days.

Is it sunny in Wuxi?

Wuxi gets on average 7.1 hours of sunshine per day, roughly 2,592 hours per year over 1940-2025.

What is the biggest single-day snowfall in Wuxi?

The heaviest 24-hour snowfall measured in Wuxi between 1940 and 2025 was 6 January 2003, with 18.1 cm.

Are there tropical nights in Wuxi?

Yes: Wuxi has on average 136 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Wuxi?

In Wuxi, between 1940 and 2025, the highest apparent temperature reached 46.7 °C on 15 July 2002, and the lowest was -16.9 °C on 29 December 1991.

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