Changsha climate — normals and trends

Q: What is the climate of Changsha?

Changsha has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 18.1 °C and it receives 1,808 mm of precipitation per year.

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

The hottest day measured in Changsha between 1940 and 2025 was 13 August 1953, reaching 42.4 °C.

Q: What is the coldest day in Changsha?

The coldest day measured in Changsha between 1940 and 2025 was 11 January 1955, at -13.1 °C.

Q: Does it snow in Changsha?

Yes. Changsha gets on average 11.0 cm of snow per year and has around 13 frost days.

Q: Has the climate of Changsha warmed?

Yes: Changsha warmed by +0.9 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Changsha?

The wettest day measured in Changsha between 1940 and 2025 was 11 August 1969, with 223 mm of rain in 24 hours.

Q: What was the windiest day in Changsha?

The windiest day measured in Changsha between 1940 and 2025 was 14 June 1946, with winds reaching 42.3 km/h.

Q: What is the warmest month in Changsha?

The warmest month in Changsha is July (29.7 °C on average); the coldest is January (5.8 °C).

Q: How much does it rain in Changsha?

Changsha receives on average 1,808 mm of precipitation per year, spread over about 157 rainy days.

Q: Is it sunny in Changsha?

Changsha gets on average 7.0 hours of sunshine per day, roughly 2,555 hours per year over 1940-2025.

Changsha (China) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 18.1 °C and it receives 1,808 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 (29.7 °C on average) and the coldest is January (5.8 °C). Rainfall peaks in June.

Changsha averages 13 frost days, 93 hot days (≥ 30 °C) and 157 rainy days per year.

Changsha has warmed by +0.9 °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 19 to 7 per year over the period.

The hottest day of the period reached 42.4 °C (on 13 August 1953) and the coldest -13.1 °C (on 11 January 1955).

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

ChangshaHunan

coords: 28.20°, 112.97°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthJulyColdest monthJanuaryWettest monthJuneDriest monthDecember

Mean daily temperature

18.1°C

Average daily high

21.9°C

Average daily low

14.9°C

Annual rainfall

1,808mm

Sunshine / day

7.0h

Mean relative humidity

77%

Average peak wind

13.9km/h

Seasonal range

23.9°C

Frost days (< 0 °C)

13 d/yr

Hot days (≥ 30 °C)

93 d/yr

Rainy days (≥ 1 mm)

157 d/yr

Annual snowfall

11.0 cm

Average feels-like high

23.0 °C

Average feels-like low

15.0 °C

Average peak gust

29.9 km/h

Tropical nights (≥ 20 °C)

130 d/yr

Solar radiation

13.1 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+0.9 °C

since 1940

+0.1 °C per decade · r² = 0.17 · 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

42.4 °C

13 August 1953

Coldest day

-13.1 °C

11 January 1955

Wettest day

223 mm

11 August 1969

Windiest day

42.3 km/h

14 June 1946

Strongest gust

82.1 km/h

28 April 1983

Hottest feels-like

47.5 °C

10 July 1988

Coldest feels-like

-18.0 °C

11 January 1955

Snowiest day

13.9 cm

6 February 1972

Sunniest day

13.0 h

14 June 1979

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	40.4 °C24 August 2025	-2.7 °C9 February 2025	20.2 °C	1,355 mm	117	1
2024	40.2 °C24 July 2024	-6.9 °C23 January 2024	19.7 °C	1,868 mm	108	17
2023	39.1 °C5 August 2023	-3.3 °C23 December 2023	19.4 °C	1,460 mm	107	11
2022	39.7 °C23 August 2022	-1.9 °C18 December 2022	19.4 °C	1,512 mm	118	2
2021	38.9 °C2 August 2021	-4.4 °C9 January 2021	19.4 °C	1,429 mm	113	9
2020	37.7 °C24 August 2020	-2.2 °C31 December 2020	18.6 °C	1,854 mm	88	2
2019	38.6 °C13 September 2019	-0.7 °C1 January 2019	18.7 °C	1,553 mm	105	1
2018	37.8 °C21 July 2018	-4.9 °C31 December 2018	18.8 °C	1,207 mm	101	19
2017	39.4 °C28 July 2017	-1.4 °C18 December 2017	18.7 °C	1,748 mm	85	2
2016	38.0 °C26 July 2016	-4.9 °C25 January 2016	18.5 °C	2,138 mm	91	7
2015	36.1 °C14 July 2015	-0.9 °C17 December 2015	18.5 °C	1,944 mm	78	1
2014	37.3 °C22 July 2014	-2.9 °C11 February 2014	18.7 °C	1,714 mm	79	9
2013	40.4 °C10 August 2013	-2.7 °C28 December 2013	19.6 °C	1,131 mm	117	12
2012	39.4 °C11 July 2012	-2.9 °C25 January 2012	17.9 °C	1,946 mm	85	9
2011	38.0 °C29 July 2011	-3.3 °C12 January 2011	18.2 °C	1,084 mm	96	18
2010	42.4 °C5 August 2010	-1.1 °C13 January 2010	18.6 °C	1,910 mm	93	7
2009	39.1 °C18 July 2009	-3.1 °C13 January 2009	18.7 °C	1,293 mm	106	12
2008	38.5 °C27 July 2008	-3.7 °C3 February 2008	18.8 °C	1,241 mm	111	26
2007	38.2 °C8 August 2007	-0.1 °C10 January 2007	19.2 °C	1,126 mm	106	2
2006	39.4 °C15 August 2006	-4.1 °C7 January 2006	19.1 °C	1,274 mm	108	5
2005	38.3 °C29 July 2005	-3.4 °C1 January 2005	18.4 °C	1,748 mm	96	17
2004	39.1 °C2 August 2004	-3.0 °C31 December 2004	18.8 °C	1,531 mm	91	11
2003	39.3 °C2 August 2003	-2.3 °C20 December 2003	18.3 °C	1,567 mm	103	10
2002	37.9 °C15 July 2002	-2.2 °C27 December 2002	18.5 °C	2,154 mm	82	3
2001	40.9 °C7 August 2001	-2.8 °C26 December 2001	18.6 °C	1,560 mm	103	8
2000	39.1 °C17 July 2000	-2.4 °C27 January 2000	18.0 °C	1,887 mm	98	6
1999	36.5 °C8 August 1999	-4.8 °C22 December 1999	18.3 °C	2,249 mm	76	5
1998	39.1 °C24 August 1998	-1.8 °C26 January 1998	19.0 °C	2,273 mm	97	9
1997	36.3 °C30 July 1997	-1.8 °C9 January 1997	18.0 °C	2,087 mm	85	8
1996	36.6 °C26 July 1996	-1.7 °C18 February 1996	17.8 °C	1,797 mm	83	10
1995	39.8 °C23 July 1995	-2.1 °C5 February 1995	18.4 °C	2,137 mm	91	9
1994	38.2 °C3 July 1994	-2.5 °C22 January 1994	18.1 °C	2,254 mm	88	6
1993	36.3 °C27 June 1993	-3.6 °C16 January 1993	17.4 °C	2,201 mm	74	15
1992	39.5 °C31 July 1992	-2.1 °C15 January 1992	18.1 °C	1,733 mm	83	8
1991	38.9 °C29 July 1991	-6.5 °C28 December 1991	17.8 °C	1,969 mm	90	6
1990	39.2 °C25 July 1990	-7.7 °C1 February 1990	18.1 °C	2,162 mm	94	5
1989	39.5 °C22 July 1989	-4.7 °C14 January 1989	17.4 °C	1,949 mm	71	10
1988	39.0 °C10 July 1988	-0.1 °C17 February 1988	17.8 °C	1,889 mm	86	1
1987	36.3 °C27 August 1987	-1.1 °C7 December 1987	18.1 °C	1,795 mm	88	6
1986	37.3 °C14 August 1986	-1.5 °C2 March 1986	17.9 °C	1,707 mm	99	5
1985	38.2 °C16 July 1985	-3.1 °C12 December 1985	17.8 °C	1,596 mm	101	21
1984	36.8 °C16 July 1984	-3.8 °C25 December 1984	17.2 °C	1,674 mm	92	26
1983	38.5 °C6 August 1983	-3.6 °C12 January 1983	18.1 °C	1,708 mm	93	8
1982	37.6 °C15 July 1982	-1.2 °C19 December 1982	17.6 °C	2,158 mm	66	8
1981	40.1 °C20 August 1981	-1.8 °C20 December 1981	17.9 °C	1,758 mm	98	10
1980	37.6 °C27 July 1980	-8.1 °C31 January 1980	17.5 °C	1,810 mm	73	15
1979	38.1 °C8 August 1979	-5.3 °C19 November 1979	18.2 °C	1,875 mm	86	13
1978	38.8 °C22 August 1978	-3.1 °C18 February 1978	18.2 °C	1,537 mm	96	13
1977	39.7 °C9 August 1977	-8.5 °C11 February 1977	17.6 °C	2,129 mm	75	25
1976	38.1 °C5 August 1976	-4.0 °C28 December 1976	17.3 °C	1,822 mm	73	14
1975	38.4 °C29 July 1975	-4.2 °C15 December 1975	17.8 °C	1,988 mm	88	20
1974	37.3 °C9 August 1974	-3.1 °C8 February 1974	17.7 °C	1,547 mm	90	13
1973	36.2 °C22 August 1973	-3.4 °C25 December 1973	17.9 °C	2,294 mm	80	10
1972	37.9 °C12 August 1972	-6.9 °C9 February 1972	17.5 °C	1,806 mm	86	15
1971	39.9 °C26 July 1971	-3.1 °C31 January 1971	17.5 °C	1,719 mm	84	10
1970	38.6 °C11 August 1970	-5.5 °C5 January 1970	17.4 °C	2,236 mm	80	16
1969	37.4 °C27 July 1969	-10.0 °C6 February 1969	17.4 °C	2,394 mm	92	32
1968	37.8 °C31 July 1968	-2.8 °C3 February 1968	18.1 °C	1,694 mm	102	10
1967	39.7 °C28 August 1967	-7.0 °C16 January 1967	17.6 °C	2,307 mm	100	37
1966	38.9 °C12 August 1966	-5.3 °C28 December 1966	18.7 °C	1,899 mm	103	15
1965	36.4 °C21 July 1965	-3.0 °C27 December 1965	17.6 °C	2,146 mm	78	13
1964	39.2 °C20 July 1964	-4.4 °C18 February 1964	18.0 °C	1,891 mm	94	22
1963	39.9 °C29 August 1963	-2.9 °C15 January 1963	18.7 °C	1,358 mm	115	17
1962	37.6 °C28 July 1962	-3.7 °C2 January 1962	18.0 °C	1,871 mm	88	15
1961	41.1 °C23 July 1961	-3.7 °C17 January 1961	18.7 °C	2,190 mm	93	11
1960	37.4 °C1 August 1960	-9.0 °C25 January 1960	17.9 °C	1,644 mm	100	14
1959	37.7 °C23 August 1959	-3.3 °C16 January 1959	18.2 °C	1,442 mm	104	11
1958	37.5 °C23 July 1958	-4.1 °C24 January 1958	17.6 °C	1,685 mm	90	17
1957	38.2 °C23 July 1957	-9.5 °C7 February 1957	17.3 °C	1,839 mm	78	22
1956	38.3 °C11 August 1956	-9.9 °C24 January 1956	17.7 °C	1,758 mm	103	23
1955	36.2 °C19 September 1955	-13.1 °C11 January 1955	17.8 °C	1,923 mm	100	26
1954	35.7 °C2 September 1954	-6.7 °C8 February 1954	17.4 °C	2,580 mm	98	31
1953	42.4 °C13 August 1953	-3.9 °C19 January 1953	18.9 °C	1,682 mm	115	12
1952	34.8 °C5 July 1952	-4.8 °C18 February 1952	17.6 °C	2,330 mm	88	13
1951	38.7 °C31 August 1951	-7.8 °C14 January 1951	17.7 °C	2,376 mm	94	26
1950	36.5 °C18 July 1950	-7.6 °C18 February 1950	17.9 °C	2,166 mm	68	11
1949	36.1 °C15 September 1949	-9.5 °C9 January 1949	18.3 °C	2,406 mm	89	11
1948	35.8 °C16 August 1948	-6.5 °C25 January 1948	18.2 °C	2,280 mm	82	15
1947	37.1 °C27 August 1947	-4.4 °C20 December 1947	18.3 °C	1,960 mm	94	13
1946	41.3 °C5 September 1946	-3.1 °C5 January 1946	20.6 °C	1,046 mm	136	11
1945	37.5 °C28 July 1945	-3.6 °C16 January 1945	17.7 °C	863 mm	111	36
1944	36.4 °C14 July 1944	-4.1 °C21 December 1944	18.3 °C	1,551 mm	107	20
1943	32.8 °C17 June 1943	-3.9 °C12 January 1943	18.2 °C	1,900 mm	69	10
1942	35.6 °C8 August 1942	-2.8 °C14 February 1942	18.8 °C	1,692 mm	85	10
1941	33.8 °C6 July 1941	-3.7 °C25 January 1941	18.2 °C	2,104 mm	64	11
1940	37.4 °C14 August 1940	-9.2 °C24 January 1940	18.6 °C	1,403 mm	112	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

24.4 °C

+2.5 °C

Hot days (≥ 30 °C)

117 d/yr

+24

Frost days (< 0 °C)

1 d/yr

-12

Annual rainfall

1355 mm

-453 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	14.7 °C	+5.5 °C	46 mm	-24 mm
Feb	10.8 °C	-0.1 °C	74 mm	-32 mm
Mar	17.9 °C	+2.1 °C	100 mm	-82 mm
Apr	25.6 °C	+3.7 °C	290 mm	+22 mm
May	27.9 °C	+1.5 °C	243 mm	-60 mm
Jun	30.3 °C	+0.6 °C	250 mm	-56 mm
Jul	35.6 °C	+2.1 °C	100 mm	-52 mm
Aug	37.0 °C	+3.7 °C	30 mm	-94 mm
Sep	31.2 °C	+1.8 °C	93 mm	+10 mm
Oct	25.7 °C	+2.0 °C	19 mm	-68 mm
Nov	19.3 °C	+1.6 °C	76 mm	-0 mm
Dec	15.9 °C	+4.1 °C	37 mm	-17 mm

The year's extremes

Hottest day

40.4 °C

24 Aug 2025

Coldest day

-2.7 °C

9 Feb 2025

Wettest day

102.2 mm

22 Apr 2025

Windiest day

37.1 km/h

12 Apr 2025

Strongest gust

79.2 km/h

12 Apr 2025

Hottest feels-like

45.8 °C

5 Aug 2025

Coldest feels-like

-6.6 °C

9 Feb 2025

Sunniest day

13.0 h

11 May 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 Changsha?

Changsha has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 18.1 °C and it receives 1,808 mm of precipitation per year.

What is the hottest day ever recorded in Changsha?

The hottest day measured in Changsha between 1940 and 2025 was 13 August 1953, reaching 42.4 °C.

What is the coldest day in Changsha?

The coldest day measured in Changsha between 1940 and 2025 was 11 January 1955, at -13.1 °C.

Does it snow in Changsha?

Yes. Changsha gets on average 11.0 cm of snow per year and has around 13 frost days.

Has the climate of Changsha warmed?

Yes: Changsha warmed by +0.9 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Changsha?

The wettest day measured in Changsha between 1940 and 2025 was 11 August 1969, with 223 mm of rain in 24 hours.

What was the windiest day in Changsha?

The windiest day measured in Changsha between 1940 and 2025 was 14 June 1946, with winds reaching 42.3 km/h.

What is the warmest month in Changsha?

The warmest month in Changsha is July (29.7 °C on average); the coldest is January (5.8 °C).

How much does it rain in Changsha?

Changsha receives on average 1,808 mm of precipitation per year, spread over about 157 rainy days.

Is it sunny in Changsha?

Changsha gets on average 7.0 hours of sunshine per day, roughly 2,555 hours per year over 1940-2025.

What is the biggest single-day snowfall in Changsha?

The heaviest 24-hour snowfall measured in Changsha between 1940 and 2025 was 6 February 1972, with 13.9 cm.

Are there tropical nights in Changsha?

Yes: Changsha has on average 130 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Changsha?

In Changsha, between 1940 and 2025, the highest apparent temperature reached 47.5 °C on 10 July 1988, and the lowest was -18.0 °C on 11 January 1955.

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