Chengxi climate — normals and trends

Q: What is the climate of Chengxi?

Chengxi has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 17.7 °C and it receives 1,578 mm of precipitation per year.

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

The hottest day measured in Chengxi between 1940 and 2025 was 18 August 2022, reaching 41.8 °C.

Q: What is the coldest day in Chengxi?

The coldest day measured in Chengxi between 1940 and 2025 was 11 February 1945, at -8.3 °C.

Q: Does it snow in Chengxi?

Yes. Chengxi gets on average 3.0 cm of snow per year and has around 2 frost days.

Q: Has the climate of Chengxi warmed?

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

Q: What is the wettest day in Chengxi?

The wettest day measured in Chengxi between 1940 and 2025 was 9 August 1953, with 156 mm of rain in 24 hours.

Q: What was the windiest day in Chengxi?

The windiest day measured in Chengxi between 1940 and 2025 was 21 May 1946, with winds reaching 39.7 km/h.

Q: What is the warmest month in Chengxi?

The warmest month in Chengxi is August (27.8 °C on average); the coldest is January (7.2 °C).

Q: How much does it rain in Chengxi?

Chengxi receives on average 1,578 mm of precipitation per year, spread over about 173 rainy days.

Q: Is it sunny in Chengxi?

Chengxi gets on average 6.0 hours of sunshine per day, roughly 2,190 hours per year over 1940-2025.

Chengxi (China) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 17.7 °C and it receives 1,578 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 August (27.8 °C on average) and the coldest is January (7.2 °C). Rainfall peaks in July.

Chengxi averages 2 frost days, 66 hot days (≥ 30 °C) and 173 rainy days per year.

Chengxi 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 4 to 0 per year over the period.

The hottest day of the period reached 41.8 °C (on 18 August 2022) and the coldest -8.3 °C (on 11 February 1945).

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

ChengxiChongqing Municipality

coords: 30.21°, 107.26°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthAugustColdest monthJanuaryWettest monthJulyDriest monthJanuary

Mean daily temperature

17.7°C

Average daily high

21.0°C

Average daily low

14.8°C

Annual rainfall

1,578mm

Sunshine / day

6.0h

Mean relative humidity

79%

Average peak wind

8.1km/h

Seasonal range

20.6°C

Frost days (< 0 °C)

2 d/yr

Hot days (≥ 30 °C)

66 d/yr

Rainy days (≥ 1 mm)

173 d/yr

Annual snowfall

3.0 cm

Average feels-like high

22.3 °C

Average feels-like low

15.6 °C

Average peak gust

21.4 km/h

Tropical nights (≥ 20 °C)

111 d/yr

Solar radiation

11.5 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.0 °C

since 1940

+0.1 °C per decade · r² = 0.28 · 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

41.8 °C

18 August 2022

Coldest day

-8.3 °C

11 February 1945

Wettest day

156 mm

9 August 1953

Windiest day

39.7 km/h

21 May 1946

Strongest gust

69.5 km/h

28 May 1946

Hottest feels-like

46.8 °C

5 August 1994

Coldest feels-like

-11.8 °C

11 February 1945

Snowiest day

7.2 cm

29 January 1977

Sunniest day

13.9 h

29 June 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	38.7 °C16 July 2025	0.1 °C27 January 2025	19.1 °C	1,549 mm	103	0
2024	40.2 °C27 August 2024	-0.6 °C16 December 2024	19.4 °C	1,315 mm	97	1
2023	37.1 °C9 August 2023	0.1 °C19 January 2023	18.6 °C	1,758 mm	80	0
2022	41.8 °C18 August 2022	-0.8 °C19 December 2022	19.1 °C	1,167 mm	91	1
2021	39.2 °C2 August 2021	-1.4 °C12 January 2021	18.2 °C	1,663 mm	77	3
2020	37.7 °C29 August 2020	-0.4 °C21 December 2020	18.0 °C	1,695 mm	69	1
2019	37.3 °C28 July 2019	2.4 °C22 January 2019	18.0 °C	1,361 mm	64	0
2018	38.8 °C20 July 2018	-1.0 °C9 January 2018	18.2 °C	1,264 mm	87	1
2017	39.2 °C22 August 2017	1.4 °C19 December 2017	18.3 °C	1,329 mm	73	0
2016	40.4 °C24 August 2016	-3.9 °C25 January 2016	18.4 °C	1,373 mm	79	3
2015	35.6 °C2 August 2015	0.9 °C17 December 2015	18.5 °C	1,332 mm	71	0
2014	39.5 °C6 August 2014	0.5 °C1 January 2014	17.8 °C	1,754 mm	49	0
2013	39.6 °C14 August 2013	-1.3 °C1 January 2013	18.7 °C	1,217 mm	96	2
2012	38.3 °C18 August 2012	-1.9 °C30 December 2012	17.4 °C	1,188 mm	63	2
2011	40.1 °C17 August 2011	-1.7 °C2 February 2011	17.7 °C	1,157 mm	88	3
2010	40.8 °C11 August 2010	-1.9 °C17 December 2010	17.9 °C	1,204 mm	70	2
2009	40.3 °C7 September 2009	1.0 °C27 January 2009	18.3 °C	1,321 mm	82	0
2008	35.5 °C31 July 2008	-0.7 °C29 January 2008	17.7 °C	1,378 mm	64	4
2007	35.4 °C19 August 2007	1.1 °C9 January 2007	18.1 °C	1,535 mm	72	0
2006	40.9 °C15 August 2006	0.8 °C10 January 2006	18.9 °C	1,145 mm	85	0
2005	35.8 °C1 July 2005	-3.0 °C2 January 2005	17.7 °C	1,654 mm	76	3
2004	40.7 °C11 August 2004	-2.2 °C31 December 2004	17.8 °C	1,708 mm	63	1
2003	38.0 °C8 August 2003	1.2 °C6 January 2003	18.1 °C	1,498 mm	61	0
2002	36.9 °C13 July 2002	1.4 °C31 December 2002	18.2 °C	1,714 mm	64	0
2001	40.6 °C6 August 2001	-0.3 °C23 December 2001	18.4 °C	1,252 mm	65	2
2000	36.8 °C27 July 2000	-0.6 °C1 February 2000	17.6 °C	1,791 mm	63	1
1999	35.8 °C8 August 1999	-0.9 °C23 December 1999	18.0 °C	1,975 mm	69	4
1998	35.4 °C19 July 1998	-0.3 °C20 January 1998	18.6 °C	2,102 mm	69	1
1997	39.8 °C31 August 1997	1.0 °C28 January 1997	17.9 °C	1,534 mm	75	0
1996	37.1 °C23 August 1996	-1.2 °C3 January 1996	17.2 °C	1,985 mm	69	2
1995	38.6 °C6 September 1995	0.2 °C29 December 1995	17.7 °C	1,654 mm	71	0
1994	40.1 °C5 August 1994	0.2 °C22 January 1994	18.2 °C	1,550 mm	85	0
1993	35.7 °C13 July 1993	-1.0 °C27 January 1993	17.2 °C	1,760 mm	50	3
1992	40.7 °C11 August 1992	-0.7 °C24 December 1992	17.4 °C	1,451 mm	70	1
1991	37.0 °C25 July 1991	-3.1 °C28 December 1991	17.5 °C	1,538 mm	63	2
1990	37.4 °C27 August 1990	2.0 °C1 February 1990	18.2 °C	1,412 mm	86	0
1989	37.5 °C22 July 1989	0.2 °C11 February 1989	17.1 °C	1,791 mm	52	0
1988	37.3 °C19 July 1988	1.6 °C4 March 1988	17.6 °C	1,535 mm	67	0
1987	34.6 °C23 May 1987	1.0 °C27 January 1987	17.8 °C	1,781 mm	50	0
1986	36.6 °C11 August 1986	-0.5 °C2 March 1986	17.2 °C	1,665 mm	60	1
1985	36.5 °C4 August 1985	0.0 °C18 January 1985	17.4 °C	1,602 mm	61	0
1984	36.2 °C1 August 1984	-0.3 °C9 January 1984	17.3 °C	1,690 mm	61	1
1983	34.9 °C27 July 1983	-0.6 °C29 December 1983	17.6 °C	1,632 mm	48	1
1982	35.9 °C3 August 1982	-6.9 °C27 December 1982	17.0 °C	1,934 mm	51	4
1981	36.9 °C9 August 1981	-0.4 °C23 December 1981	17.6 °C	1,304 mm	76	1
1980	36.7 °C28 July 1980	0.2 °C7 February 1980	17.6 °C	1,501 mm	47	0
1979	36.2 °C9 August 1979	0.5 °C16 January 1979	17.9 °C	1,673 mm	55	0
1978	38.1 °C3 September 1978	-0.7 °C21 January 1978	18.1 °C	1,208 mm	82	4
1977	37.7 °C8 August 1977	-2.5 °C31 January 1977	17.5 °C	1,451 mm	66	6
1976	39.5 °C20 August 1976	0.1 °C29 December 1976	17.2 °C	1,482 mm	56	0
1975	40.5 °C10 September 1975	-4.4 °C15 December 1975	18.1 °C	1,501 mm	77	9
1974	36.7 °C30 July 1974	0.2 °C2 January 1974	17.4 °C	1,683 mm	53	0
1973	36.7 °C26 August 1973	1.3 °C31 December 1973	18.3 °C	1,617 mm	71	0
1972	38.6 °C26 August 1972	-2.3 °C8 February 1972	17.7 °C	1,678 mm	80	3
1971	38.8 °C2 September 1971	1.8 °C10 January 1971	17.9 °C	1,324 mm	70	0
1970	37.4 °C17 August 1970	-0.9 °C7 January 1970	17.5 °C	1,860 mm	67	2
1969	36.7 °C28 July 1969	0.9 °C5 February 1969	17.9 °C	1,472 mm	72	0
1968	36.2 °C31 July 1968	0.2 °C7 February 1968	17.3 °C	1,715 mm	46	0
1967	38.3 °C30 August 1967	-1.3 °C6 January 1967	17.5 °C	1,829 mm	67	6
1966	34.2 °C15 August 1966	-3.1 °C29 December 1966	17.1 °C	1,572 mm	51	5
1965	32.6 °C29 July 1965	-4.3 °C20 December 1965	16.7 °C	1,753 mm	33	5
1964	37.7 °C20 July 1964	0.5 °C28 January 1964	17.9 °C	1,830 mm	67	0
1963	36.0 °C4 June 1963	-2.6 °C2 January 1963	18.4 °C	1,791 mm	73	7
1962	37.0 °C18 July 1962	-0.9 °C27 January 1962	17.8 °C	1,743 mm	69	3
1961	39.3 °C23 July 1961	-1.2 °C16 January 1961	18.5 °C	1,623 mm	95	3
1960	37.7 °C30 August 1960	-0.7 °C3 January 1960	18.1 °C	1,776 mm	75	3
1959	39.8 °C28 August 1959	-1.6 °C13 January 1959	18.4 °C	1,160 mm	92	2
1958	36.0 °C26 July 1958	0.1 °C24 January 1958	17.9 °C	1,649 mm	69	0
1957	36.8 °C25 July 1957	-1.4 °C18 January 1957	17.7 °C	1,492 mm	54	1
1956	32.9 °C28 July 1956	-4.8 °C10 January 1956	17.0 °C	1,802 mm	62	8
1955	32.6 °C10 September 1955	-5.0 °C6 January 1955	17.2 °C	1,466 mm	51	7
1954	33.9 °C3 September 1954	-0.9 °C26 January 1954	17.3 °C	2,144 mm	50	3
1953	35.5 °C18 August 1953	-1.6 °C20 January 1953	18.1 °C	1,969 mm	72	2
1952	34.0 °C4 July 1952	-0.3 °C8 January 1952	17.7 °C	1,913 mm	53	1
1951	33.2 °C7 September 1951	-4.9 °C14 January 1951	17.4 °C	1,522 mm	65	5
1950	33.2 °C23 July 1950	-1.0 °C17 December 1950	17.1 °C	2,073 mm	28	2
1949	33.6 °C15 September 1949	-2.3 °C9 January 1949	17.6 °C	1,558 mm	62	3
1948	32.7 °C28 July 1948	-2.5 °C29 January 1948	17.7 °C	1,673 mm	62	6
1947	32.9 °C20 May 1947	-4.8 °C20 December 1947	17.7 °C	1,478 mm	57	6
1946	35.8 °C20 July 1946	-0.4 °C3 February 1946	17.9 °C	1,257 mm	74	3
1945	32.4 °C22 July 1945	-8.3 °C11 February 1945	16.5 °C	1,292 mm	38	16
1944	34.1 °C29 July 1944	-3.8 °C18 December 1944	17.1 °C	1,267 mm	80	8
1943	31.3 °C1 July 1943	-2.0 °C8 February 1943	17.3 °C	2,250 mm	22	3
1942	32.1 °C9 August 1942	-1.4 °C8 January 1942	17.7 °C	1,456 mm	44	4
1941	33.5 °C12 July 1941	-0.4 °C27 January 1941	17.4 °C	1,627 mm	43	1
1940	34.6 °C19 August 1940	-3.7 °C3 February 1940	17.3 °C	1,325 mm	63	9

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

22.7 °C

+1.7 °C

Hot days (≥ 30 °C)

103 d/yr

+37

Frost days (< 0 °C)

0 d/yr

-2

Annual rainfall

1549 mm

-29 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	11.4 °C	+1.7 °C	61 mm	+18 mm
Feb	11.4 °C	-0.3 °C	40 mm	-11 mm
Mar	16.8 °C	+0.2 °C	121 mm	+13 mm
Apr	24.8 °C	+3.0 °C	145 mm	-13 mm
May	27.9 °C	+2.6 °C	83 mm	-112 mm
Jun	28.9 °C	+0.9 °C	235 mm	+43 mm
Jul	34.4 °C	+3.0 °C	136 mm	-68 mm
Aug	34.0 °C	+2.1 °C	209 mm	+42 mm
Sep	28.9 °C	+1.8 °C	195 mm	+30 mm
Oct	23.5 °C	+2.4 °C	197 mm	+53 mm
Nov	16.6 °C	+0.5 °C	71 mm	-27 mm
Dec	13.1 °C	+2.0 °C	58 mm	+3 mm

The year's extremes

Hottest day

38.7 °C

16 Jul 2025

Coldest day

0.1 °C

27 Jan 2025

Wettest day

117.1 mm

11 Aug 2025

Windiest day

19.4 km/h

12 Apr 2025

Strongest gust

55.4 km/h

1 Oct 2025

Hottest feels-like

46.2 °C

5 Aug 2025

Coldest feels-like

-2.8 °C

27 Jan 2025

Sunniest day

13.8 h

16 Jun 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 Chengxi?

Chengxi has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 17.7 °C and it receives 1,578 mm of precipitation per year.

What is the hottest day ever recorded in Chengxi?

The hottest day measured in Chengxi between 1940 and 2025 was 18 August 2022, reaching 41.8 °C.

What is the coldest day in Chengxi?

The coldest day measured in Chengxi between 1940 and 2025 was 11 February 1945, at -8.3 °C.

Does it snow in Chengxi?

Yes. Chengxi gets on average 3.0 cm of snow per year and has around 2 frost days.

Has the climate of Chengxi warmed?

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

What is the wettest day in Chengxi?

The wettest day measured in Chengxi between 1940 and 2025 was 9 August 1953, with 156 mm of rain in 24 hours.

What was the windiest day in Chengxi?

The windiest day measured in Chengxi between 1940 and 2025 was 21 May 1946, with winds reaching 39.7 km/h.

What is the warmest month in Chengxi?

The warmest month in Chengxi is August (27.8 °C on average); the coldest is January (7.2 °C).

How much does it rain in Chengxi?

Chengxi receives on average 1,578 mm of precipitation per year, spread over about 173 rainy days.

Is it sunny in Chengxi?

Chengxi gets on average 6.0 hours of sunshine per day, roughly 2,190 hours per year over 1940-2025.

What is the biggest single-day snowfall in Chengxi?

The heaviest 24-hour snowfall measured in Chengxi between 1940 and 2025 was 29 January 1977, with 7.2 cm.

Are there tropical nights in Chengxi?

Yes: Chengxi has on average 111 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Chengxi?

In Chengxi, between 1940 and 2025, the highest apparent temperature reached 46.8 °C on 5 August 1994, and the lowest was -11.8 °C on 11 February 1945.

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