Chongqing climate — normals and trends

Q: What is the climate of Chongqing?

Chongqing has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 18.6 °C and it receives 1,277 mm of precipitation per year.

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

The hottest day measured in Chongqing between 1940 and 2025 was 17 August 2011, reaching 43.5 °C.

Q: What is the coldest day in Chongqing?

The coldest day measured in Chongqing between 1940 and 2025 was 11 February 1945, at -3.9 °C.

Q: Does it snow in Chongqing?

Almost never: Chongqing sees virtually no snow, with about 1 frost days per year.

Q: Has the climate of Chongqing warmed?

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

Q: What is the wettest day in Chongqing?

The wettest day measured in Chongqing between 1940 and 2025 was 28 June 1953, with 127 mm of rain in 24 hours.

Q: What was the windiest day in Chongqing?

The windiest day measured in Chongqing between 1940 and 2025 was 21 May 1946, with winds reaching 55.3 km/h.

Q: What is the warmest month in Chongqing?

The warmest month in Chongqing is August (28.6 °C on average); the coldest is January (8.1 °C).

Q: How much does it rain in Chongqing?

Chongqing receives on average 1,277 mm of precipitation per year, spread over about 165 rainy days.

Q: Is it sunny in Chongqing?

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

Chongqing (China) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 18.6 °C and it receives 1,277 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 (28.6 °C on average) and the coldest is January (8.1 °C). Rainfall peaks in July.

Chongqing averages 1 frost days, 79 hot days (≥ 30 °C) and 165 rainy days per year.

Chongqing has warmed by +1.0 °C between 1940 and 2025, or +0.12 °C per decade. This trend is statistically significant.

The number of frost days there went from about 2 to 0 per year over the period.

The hottest day of the period reached 43.5 °C (on 17 August 2011) and the coldest -3.9 °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

ChongqingChongqing Municipality

coords: 29.56°, 106.56°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthAugustColdest monthJanuaryWettest monthJulyDriest monthJanuary

Mean daily temperature

18.6°C

Average daily high

21.9°C

Average daily low

15.6°C

Annual rainfall

1,277mm

Sunshine / day

6.0h

Mean relative humidity

78%

Average peak wind

9.6km/h

Seasonal range

20.5°C

Frost days (< 0 °C)

1 d/yr

Hot days (≥ 30 °C)

79 d/yr

Rainy days (≥ 1 mm)

165 d/yr

Annual snowfall

1.0 cm

Average feels-like high

23.3 °C

Average feels-like low

16.5 °C

Average peak gust

22.0 km/h

Tropical nights (≥ 20 °C)

123 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 = 0.27 · 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

43.5 °C

17 August 2011

Coldest day

-3.9 °C

11 February 1945

Wettest day

127 mm

28 June 1953

Windiest day

55.3 km/h

21 May 1946

Strongest gust

71.3 km/h

22 May 1946

Hottest feels-like

47.9 °C

16 July 2025

Coldest feels-like

-7.2 °C

11 February 1945

Snowiest day

5.9 cm

27 December 1991

Sunniest day

13.9 h

18 June 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	39.5 °C16 July 2025	0.1 °C12 January 2025	19.9 °C	1,240 mm	118	0
2024	42.7 °C27 August 2024	1.1 °C16 December 2024	20.4 °C	1,148 mm	103	0
2023	37.8 °C9 August 2023	0.9 °C19 January 2023	19.4 °C	1,439 mm	90	0
2022	43.3 °C18 August 2022	1.3 °C23 February 2022	19.9 °C	975 mm	99	0
2021	40.3 °C3 August 2021	-1.8 °C12 January 2021	19.0 °C	1,273 mm	89	2
2020	39.6 °C29 August 2020	1.5 °C21 December 2020	18.8 °C	1,281 mm	80	0
2019	38.7 °C17 August 2019	3.5 °C22 January 2019	18.8 °C	1,125 mm	77	0
2018	39.9 °C20 July 2018	1.3 °C10 January 2018	19.0 °C	1,069 mm	89	0
2017	42.0 °C22 August 2017	1.8 °C21 December 2017	19.2 °C	1,049 mm	89	0
2016	40.2 °C25 August 2016	-0.8 °C25 January 2016	19.2 °C	1,342 mm	90	1
2015	37.1 °C2 August 2015	2.3 °C17 December 2015	19.4 °C	1,090 mm	79	0
2014	39.8 °C6 August 2014	1.1 °C14 January 2014	18.5 °C	1,376 mm	60	0
2013	41.6 °C31 July 2013	0.9 °C1 January 2013	19.9 °C	1,109 mm	111	0
2012	38.6 °C12 August 2012	-0.9 °C31 December 2012	18.1 °C	1,068 mm	65	1
2011	43.5 °C17 August 2011	-1.1 °C2 February 2011	19.0 °C	930 mm	104	2
2010	41.4 °C11 August 2010	1.0 °C17 December 2010	18.7 °C	1,270 mm	76	0
2009	39.0 °C19 July 2009	1.5 °C27 January 2009	19.0 °C	1,122 mm	88	0
2008	39.4 °C31 July 2008	-0.2 °C29 January 2008	18.7 °C	1,060 mm	83	1
2007	36.8 °C8 August 2007	1.7 °C19 January 2007	19.1 °C	1,240 mm	93	0
2006	43.1 °C15 August 2006	2.0 °C27 January 2006	19.7 °C	1,023 mm	97	0
2005	37.5 °C1 July 2005	0.6 °C2 January 2005	18.7 °C	1,110 mm	86	0
2004	39.1 °C11 August 2004	1.8 °C31 December 2004	18.5 °C	1,726 mm	76	0
2003	39.3 °C25 August 2003	1.6 °C7 January 2003	19.0 °C	1,096 mm	76	0
2002	38.2 °C16 July 2002	1.7 °C27 December 2002	19.0 °C	1,408 mm	78	0
2001	39.7 °C6 August 2001	1.6 °C23 December 2001	19.1 °C	1,054 mm	70	0
2000	37.6 °C27 July 2000	1.2 °C1 February 2000	18.4 °C	1,425 mm	80	0
1999	36.5 °C8 August 1999	-1.1 °C26 December 1999	18.8 °C	1,541 mm	75	1
1998	36.7 °C19 July 1998	1.5 °C23 January 1998	19.3 °C	1,566 mm	88	0
1997	40.7 °C31 August 1997	1.1 °C28 January 1997	18.6 °C	1,311 mm	81	0
1996	37.9 °C23 August 1996	0.7 °C22 February 1996	18.0 °C	1,463 mm	77	0
1995	41.3 °C6 September 1995	1.3 °C29 December 1995	18.6 °C	1,278 mm	82	0
1994	40.7 °C5 August 1994	0.3 °C25 January 1994	18.9 °C	1,213 mm	93	0
1993	36.9 °C13 July 1993	-0.1 °C30 January 1993	18.0 °C	1,352 mm	58	1
1992	42.3 °C8 August 1992	0.6 °C24 December 1992	18.3 °C	1,157 mm	80	0
1991	38.0 °C28 July 1991	-0.4 °C28 December 1991	18.3 °C	1,113 mm	79	1
1990	40.4 °C27 August 1990	2.3 °C1 February 1990	19.0 °C	1,126 mm	95	0
1989	38.5 °C22 July 1989	-0.3 °C16 January 1989	17.9 °C	1,378 mm	65	1
1988	38.4 °C19 July 1988	2.8 °C19 February 1988	18.2 °C	1,252 mm	78	0
1987	36.5 °C23 May 1987	1.7 °C16 December 1987	18.6 °C	1,335 mm	63	0
1986	37.2 °C10 August 1986	0.6 °C7 January 1986	17.9 °C	1,295 mm	70	0
1985	37.4 °C5 August 1985	1.6 °C18 January 1985	18.1 °C	1,264 mm	76	0
1984	37.8 °C2 August 1984	1.2 °C9 January 1984	17.9 °C	1,493 mm	74	0
1983	36.9 °C27 July 1983	1.3 °C24 January 1983	18.3 °C	1,417 mm	58	0
1982	37.7 °C3 August 1982	-1.9 °C27 December 1982	17.8 °C	1,491 mm	60	3
1981	38.6 °C19 August 1981	0.3 °C23 December 1981	18.4 °C	1,068 mm	82	0
1980	38.5 °C28 July 1980	0.5 °C6 February 1980	18.4 °C	1,103 mm	61	0
1979	36.9 °C9 August 1979	0.5 °C24 November 1979	18.6 °C	1,354 mm	67	0
1978	40.7 °C3 September 1978	-0.1 °C21 January 1978	19.1 °C	954 mm	92	1
1977	38.2 °C7 August 1977	-0.9 °C29 January 1977	18.3 °C	1,178 mm	74	2
1976	39.6 °C6 August 1976	0.6 °C2 January 1976	17.9 °C	1,086 mm	69	0
1975	40.3 °C9 September 1975	-2.0 °C16 December 1975	18.7 °C	1,315 mm	80	4
1974	38.5 °C30 July 1974	2.5 °C1 January 1974	18.2 °C	1,513 mm	58	0
1973	37.6 °C25 August 1973	1.4 °C31 December 1973	19.2 °C	1,277 mm	88	0
1972	40.2 °C26 August 1972	-0.2 °C8 February 1972	18.4 °C	1,315 mm	84	1
1971	41.2 °C2 September 1971	2.4 °C3 January 1971	18.8 °C	1,075 mm	77	0
1970	38.9 °C18 August 1970	0.5 °C5 January 1970	18.1 °C	1,397 mm	80	0
1969	37.4 °C27 July 1969	0.7 °C16 January 1969	18.7 °C	1,203 mm	85	0
1968	37.1 °C31 July 1968	0.6 °C7 February 1968	17.9 °C	1,558 mm	63	0
1967	38.8 °C11 August 1967	-0.8 °C2 February 1967	18.1 °C	1,389 mm	75	2
1966	36.0 °C3 August 1966	-0.8 °C29 January 1966	18.1 °C	1,245 mm	68	2
1965	34.1 °C12 July 1965	-0.6 °C20 December 1965	17.7 °C	1,388 mm	52	2
1964	40.2 °C20 July 1964	1.2 °C25 February 1964	18.7 °C	1,351 mm	74	0
1963	38.1 °C31 August 1963	-1.6 °C15 January 1963	19.3 °C	1,259 mm	90	1
1962	38.6 °C18 July 1962	0.1 °C27 January 1962	18.5 °C	1,387 mm	79	0
1961	41.0 °C23 July 1961	0.5 °C17 January 1961	19.2 °C	1,283 mm	104	0
1960	38.6 °C4 August 1960	-0.1 °C3 January 1960	18.7 °C	1,339 mm	81	1
1959	41.2 °C28 August 1959	0.8 °C13 January 1959	19.2 °C	888 mm	100	0
1958	38.2 °C26 July 1958	0.5 °C15 January 1958	18.8 °C	1,187 mm	85	0
1957	38.4 °C25 July 1957	-0.6 °C7 February 1957	18.3 °C	1,339 mm	55	1
1956	34.8 °C4 July 1956	-2.4 °C12 January 1956	18.0 °C	1,416 mm	81	4
1955	34.2 °C10 September 1955	-2.6 °C6 January 1955	18.2 °C	1,268 mm	71	3
1954	34.9 °C1 September 1954	0.6 °C16 December 1954	18.2 °C	1,666 mm	73	0
1953	36.9 °C1 August 1953	0.3 °C27 January 1953	19.1 °C	1,497 mm	88	0
1952	36.2 °C4 July 1952	0.2 °C8 January 1952	18.7 °C	1,477 mm	66	0
1951	35.2 °C7 September 1951	-3.6 °C14 January 1951	18.3 °C	1,153 mm	83	2
1950	33.8 °C3 July 1950	0.0 °C17 December 1950	17.9 °C	1,644 mm	50	0
1949	35.5 °C14 September 1949	-1.6 °C9 January 1949	18.4 °C	1,230 mm	78	1
1948	34.2 °C13 August 1948	-1.1 °C10 February 1948	18.5 °C	1,268 mm	79	4
1947	34.2 °C25 July 1947	-2.8 °C20 December 1947	18.5 °C	1,437 mm	79	4
1946	39.6 °C19 August 1946	0.0 °C3 February 1946	19.2 °C	959 mm	108	0
1945	34.0 °C21 July 1945	-3.9 °C11 February 1945	17.4 °C	1,244 mm	61	10
1944	35.5 °C4 August 1944	-3.0 °C18 December 1944	17.7 °C	1,135 mm	86	6
1943	32.3 °C9 June 1943	-1.8 °C8 February 1943	18.1 °C	1,922 mm	46	1
1942	33.2 °C3 August 1942	0.6 °C13 February 1942	18.5 °C	1,530 mm	62	0
1941	35.2 °C11 July 1941	-0.3 °C2 February 1941	18.1 °C	1,347 mm	54	1
1940	35.7 °C19 August 1940	-1.9 °C3 February 1940	18.1 °C	1,075 mm	79	3

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

23.6 °C

+1.7 °C

Hot days (≥ 30 °C)

118 d/yr

+39

Frost days (< 0 °C)

0 d/yr

-1

Annual rainfall

1240 mm

-37 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	12.3 °C	+1.7 °C	61 mm	+27 mm
Feb	12.5 °C	-0.3 °C	38 mm	+2 mm
Mar	17.5 °C	-0.3 °C	74 mm	-1 mm
Apr	25.7 °C	+2.9 °C	85 mm	-38 mm
May	28.2 °C	+1.9 °C	116 mm	-51 mm
Jun	30.3 °C	+1.5 °C	173 mm	+6 mm
Jul	35.1 °C	+2.7 °C	221 mm	+51 mm
Aug	35.2 °C	+2.4 °C	131 mm	-18 mm
Sep	30.2 °C	+2.2 °C	124 mm	-5 mm
Oct	24.4 °C	+2.6 °C	125 mm	+14 mm
Nov	16.9 °C	0.0 °C	56 mm	-19 mm
Dec	13.6 °C	+1.7 °C	37 mm	-5 mm

The year's extremes

Hottest day

39.5 °C

16 Jul 2025

Coldest day

0.1 °C

12 Jan 2025

Wettest day

49.7 mm

9 Jul 2025

Windiest day

28.3 km/h

12 Apr 2025

Strongest gust

59.8 km/h

12 Apr 2025

Hottest feels-like

47.9 °C

16 Jul 2025

Coldest feels-like

-2.9 °C

12 Jan 2025

Sunniest day

13.9 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 Chongqing?

Chongqing has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 18.6 °C and it receives 1,277 mm of precipitation per year.

What is the hottest day ever recorded in Chongqing?

The hottest day measured in Chongqing between 1940 and 2025 was 17 August 2011, reaching 43.5 °C.

What is the coldest day in Chongqing?

The coldest day measured in Chongqing between 1940 and 2025 was 11 February 1945, at -3.9 °C.

Does it snow in Chongqing?

Almost never: Chongqing sees virtually no snow, with about 1 frost days per year.

Has the climate of Chongqing warmed?

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

What is the wettest day in Chongqing?

The wettest day measured in Chongqing between 1940 and 2025 was 28 June 1953, with 127 mm of rain in 24 hours.

What was the windiest day in Chongqing?

The windiest day measured in Chongqing between 1940 and 2025 was 21 May 1946, with winds reaching 55.3 km/h.

What is the warmest month in Chongqing?

The warmest month in Chongqing is August (28.6 °C on average); the coldest is January (8.1 °C).

How much does it rain in Chongqing?

Chongqing receives on average 1,277 mm of precipitation per year, spread over about 165 rainy days.

Is it sunny in Chongqing?

Chongqing 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 Chongqing?

The heaviest 24-hour snowfall measured in Chongqing between 1940 and 2025 was 27 December 1991, with 5.9 cm.

Are there tropical nights in Chongqing?

Yes: Chongqing has on average 123 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Chongqing?

In Chongqing, between 1940 and 2025, the highest apparent temperature reached 47.9 °C on 16 July 2025, and the lowest was -7.2 °C on 11 February 1945.

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