Hengyang climate — normals and trends

Q: What is the climate of Hengyang?

Hengyang has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 18.6 °C and it receives 1,674 mm of precipitation per year.

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

The hottest day measured in Hengyang between 1940 and 2025 was 5 August 2010, reaching 42.6 °C.

Q: What is the coldest day in Hengyang?

The coldest day measured in Hengyang between 1940 and 2025 was 29 December 1991, at -13.8 °C.

Q: Does it snow in Hengyang?

Yes. Hengyang gets on average 7.6 cm of snow per year and has around 9 frost days.

Q: Has the climate of Hengyang warmed?

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

Q: What is the wettest day in Hengyang?

The wettest day measured in Hengyang between 1940 and 2025 was 13 June 1994, with 164 mm of rain in 24 hours.

Q: What was the windiest day in Hengyang?

The windiest day measured in Hengyang between 1940 and 2025 was 14 June 1946, with winds reaching 39.1 km/h.

Q: What is the warmest month in Hengyang?

The warmest month in Hengyang is July (30.0 °C on average); the coldest is January (6.4 °C).

Q: How much does it rain in Hengyang?

Hengyang receives on average 1,674 mm of precipitation per year, spread over about 160 rainy days.

Q: Is it sunny in Hengyang?

Hengyang gets on average 6.9 hours of sunshine per day, roughly 2,519 hours per year over 1940-2025.

Hengyang (China) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 18.6 °C and it receives 1,674 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 (30.0 °C on average) and the coldest is January (6.4 °C). Rainfall peaks in May.

Hengyang averages 9 frost days, 103 hot days (≥ 30 °C) and 160 rainy days per year.

Hengyang 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 14 to 4 per year over the period.

The hottest day of the period reached 42.6 °C (on 5 August 2010) and the coldest -13.8 °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

HengyangHunan

coords: 26.89°, 112.62°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthJulyColdest monthJanuaryWettest monthMayDriest monthDecember

Mean daily temperature

18.6°C

Average daily high

22.4°C

Average daily low

15.3°C

Annual rainfall

1,674mm

Sunshine / day

6.9h

Mean relative humidity

76%

Average peak wind

13.6km/h

Seasonal range

23.6°C

Frost days (< 0 °C)

9 d/yr

Hot days (≥ 30 °C)

103 d/yr

Rainy days (≥ 1 mm)

160 d/yr

Annual snowfall

7.6 cm

Average feels-like high

23.6 °C

Average feels-like low

15.6 °C

Average peak gust

31.4 km/h

Tropical nights (≥ 20 °C)

136 d/yr

Solar radiation

13.1 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.0 °C

since 1940

+0.1 °C per decade · r² = 0.20 · 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

42.6 °C

5 August 2010

Coldest day

-13.8 °C

29 December 1991

Wettest day

164 mm

13 June 1994

Windiest day

39.1 km/h

14 June 1946

Strongest gust

87.5 km/h

5 April 2002

Hottest feels-like

47.8 °C

24 July 2024

Coldest feels-like

-18.5 °C

29 December 1991

Snowiest day

16.6 cm

6 January 2003

Sunniest day

13.0 h

29 April 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	41.2 °C17 September 2025	-2.0 °C9 February 2025	20.5 °C	1,296 mm	136	2
2024	40.6 °C25 July 2024	-2.6 °C23 January 2024	19.8 °C	2,042 mm	112	14
2023	40.9 °C5 August 2023	-2.2 °C25 January 2023	20.0 °C	1,375 mm	114	6
2022	40.5 °C17 August 2022	-0.9 °C18 December 2022	19.7 °C	1,533 mm	124	1
2021	39.4 °C1 August 2021	-2.6 °C9 January 2021	20.0 °C	1,255 mm	128	7
2020	38.5 °C9 August 2020	-0.8 °C31 December 2020	19.2 °C	1,679 mm	106	2
2019	39.2 °C20 August 2019	-0.4 °C1 January 2019	19.0 °C	1,580 mm	119	1
2018	36.7 °C11 July 2018	-3.6 °C6 February 2018	19.1 °C	1,404 mm	105	15
2017	39.9 °C6 August 2017	-0.1 °C18 December 2017	19.3 °C	1,617 mm	104	2
2016	39.6 °C20 August 2016	-4.4 °C25 January 2016	19.1 °C	1,696 mm	105	4
2015	36.5 °C29 June 2015	-0.3 °C6 February 2015	18.9 °C	2,056 mm	89	1
2014	38.3 °C22 July 2014	-1.7 °C11 February 2014	19.2 °C	1,618 mm	96	6
2013	40.7 °C13 July 2013	-2.1 °C4 January 2013	19.8 °C	1,336 mm	117	9
2012	39.4 °C19 August 2012	-2.9 °C31 December 2012	18.3 °C	1,565 mm	98	5
2011	39.5 °C26 July 2011	-3.0 °C12 January 2011	18.6 °C	950 mm	107	7
2010	42.6 °C5 August 2010	-1.2 °C13 January 2010	19.0 °C	1,711 mm	100	8
2009	39.1 °C18 July 2009	-2.7 °C14 January 2009	19.0 °C	1,226 mm	114	6
2008	41.4 °C21 August 2008	-2.8 °C3 February 2008	19.2 °C	1,212 mm	121	20
2007	39.3 °C19 July 2007	1.1 °C10 January 2007	19.8 °C	1,149 mm	109	0
2006	41.0 °C15 August 2006	-1.8 °C7 January 2006	19.4 °C	1,526 mm	107	3
2005	41.1 °C29 July 2005	-2.9 °C1 January 2005	19.0 °C	1,551 mm	113	6
2004	38.3 °C11 August 2004	-1.5 °C22 January 2004	19.0 °C	1,524 mm	102	4
2003	40.5 °C28 July 2003	-6.3 °C8 January 2003	19.0 °C	1,276 mm	112	9
2002	38.3 °C15 July 2002	-2.1 °C27 December 2002	18.9 °C	2,183 mm	87	3
2001	37.3 °C30 July 2001	-2.3 °C26 December 2001	18.6 °C	1,874 mm	96	3
2000	41.0 °C17 July 2000	-1.5 °C1 February 2000	18.3 °C	1,836 mm	110	6
1999	37.1 °C8 August 1999	-4.9 °C23 December 1999	18.8 °C	1,809 mm	88	4
1998	41.1 °C10 August 1998	-1.1 °C20 January 1998	19.8 °C	1,783 mm	120	2
1997	36.3 °C30 July 1997	-2.0 °C26 January 1997	18.3 °C	2,297 mm	96	6
1996	36.3 °C26 July 1996	-1.3 °C18 February 1996	18.2 °C	1,751 mm	98	6
1995	41.1 °C5 September 1995	-1.9 °C30 December 1995	18.8 °C	1,669 mm	103	6
1994	37.7 °C10 July 1994	-2.4 °C21 January 1994	18.3 °C	2,614 mm	97	5
1993	36.3 °C27 June 1993	-3.2 °C16 January 1993	17.8 °C	2,022 mm	86	10
1992	38.9 °C30 July 1992	-2.9 °C15 January 1992	18.5 °C	1,632 mm	98	2
1991	40.9 °C28 July 1991	-13.8 °C29 December 1991	18.4 °C	1,692 mm	103	6
1990	39.3 °C25 July 1990	-3.4 °C1 February 1990	18.5 °C	1,913 mm	101	4
1989	39.3 °C22 July 1989	-3.5 °C14 January 1989	17.9 °C	1,753 mm	82	6
1988	39.2 °C14 August 1988	-0.6 °C20 February 1988	18.1 °C	1,588 mm	92	2
1987	37.5 °C6 August 1987	-1.9 °C8 December 1987	18.6 °C	1,763 mm	106	3
1986	37.4 °C30 July 1986	-0.7 °C2 March 1986	18.4 °C	1,500 mm	112	4
1985	40.8 °C16 July 1985	-1.9 °C16 December 1985	18.2 °C	1,387 mm	107	11
1984	39.1 °C25 July 1984	-4.4 °C22 January 1984	17.5 °C	1,716 mm	105	17
1983	39.1 °C6 August 1983	-4.8 °C12 January 1983	18.6 °C	1,975 mm	110	6
1982	38.3 °C21 July 1982	-2.3 °C19 December 1982	18.2 °C	1,971 mm	84	5
1981	39.3 °C19 August 1981	-1.3 °C11 January 1981	18.1 °C	1,920 mm	101	5
1980	39.0 °C3 July 1980	-8.8 °C31 January 1980	18.0 °C	1,575 mm	87	14
1979	41.1 °C8 August 1979	-3.1 °C31 January 1979	18.9 °C	1,533 mm	94	8
1978	39.6 °C2 August 1978	-2.3 °C19 January 1978	18.5 °C	1,684 mm	104	10
1977	37.7 °C10 August 1977	-8.8 °C10 February 1977	18.2 °C	1,925 mm	88	20
1976	38.8 °C4 August 1976	-3.2 °C28 December 1976	17.9 °C	2,068 mm	86	8
1975	38.5 °C30 July 1975	-3.4 °C29 December 1975	18.2 °C	2,019 mm	98	12
1974	38.4 °C9 August 1974	-3.1 °C8 February 1974	18.2 °C	1,653 mm	95	11
1973	36.6 °C31 July 1973	-3.0 °C26 December 1973	18.5 °C	1,989 mm	94	5
1972	38.4 °C9 July 1972	-10.6 °C9 February 1972	18.0 °C	1,865 mm	102	12
1971	41.2 °C26 July 1971	-2.3 °C31 January 1971	18.2 °C	1,527 mm	99	4
1970	37.9 °C2 August 1970	-5.3 °C19 January 1970	17.8 °C	2,055 mm	96	13
1969	38.1 °C2 August 1969	-5.4 °C1 February 1969	18.0 °C	1,770 mm	106	26
1968	38.8 °C30 July 1968	-0.7 °C1 January 1968	18.6 °C	2,025 mm	106	3
1967	39.9 °C27 August 1967	-5.0 °C16 January 1967	18.2 °C	1,534 mm	111	23
1966	38.0 °C17 August 1966	-4.2 °C28 December 1966	18.9 °C	1,438 mm	106	12
1965	37.0 °C21 July 1965	-2.5 °C18 December 1965	17.9 °C	1,918 mm	74	8
1964	39.9 °C21 July 1964	-3.8 °C18 February 1964	18.6 °C	1,546 mm	112	17
1963	40.3 °C26 August 1963	-3.2 °C14 January 1963	19.3 °C	1,264 mm	126	7
1962	38.7 °C20 July 1962	-2.3 °C25 January 1962	18.5 °C	1,962 mm	91	7
1961	39.6 °C24 July 1961	-2.4 °C15 January 1961	18.8 °C	2,095 mm	103	5
1960	39.4 °C20 July 1960	-3.2 °C24 January 1960	18.4 °C	1,533 mm	105	11
1959	39.5 °C24 July 1959	-2.6 °C11 January 1959	18.7 °C	1,640 mm	114	5
1958	37.9 °C18 August 1958	-3.3 °C2 February 1958	18.2 °C	1,454 mm	96	12
1957	38.7 °C1 August 1957	-7.8 °C11 February 1957	18.0 °C	1,768 mm	88	19
1956	37.5 °C27 July 1956	-5.4 °C24 January 1956	18.1 °C	1,382 mm	113	19
1955	35.1 °C11 September 1955	-7.1 °C11 January 1955	18.3 °C	1,363 mm	108	20
1954	37.4 °C29 July 1954	-4.3 °C31 December 1954	18.1 °C	1,753 mm	111	24
1953	41.3 °C17 August 1953	-3.1 °C18 January 1953	19.1 °C	1,329 mm	121	7
1952	35.7 °C12 September 1952	-3.9 °C18 February 1952	18.1 °C	1,762 mm	98	13
1951	37.5 °C1 September 1951	-9.7 °C14 January 1951	17.9 °C	2,137 mm	101	21
1950	36.2 °C18 July 1950	-2.5 °C17 February 1950	18.2 °C	2,066 mm	65	10
1949	35.4 °C14 September 1949	-6.5 °C9 January 1949	18.7 °C	1,952 mm	103	7
1948	34.4 °C10 August 1948	-5.6 °C25 January 1948	18.7 °C	1,758 mm	96	10
1947	35.8 °C27 August 1947	-2.8 °C20 December 1947	18.5 °C	1,841 mm	93	10
1946	41.2 °C5 September 1946	-2.7 °C11 January 1946	20.9 °C	765 mm	150	7
1945	37.0 °C29 July 1945	-4.5 °C18 December 1945	17.8 °C	855 mm	113	26
1944	35.6 °C4 August 1944	-3.3 °C21 December 1944	18.4 °C	1,478 mm	102	18
1943	33.2 °C27 June 1943	-3.1 °C12 January 1943	18.6 °C	1,609 mm	80	8
1942	35.0 °C6 August 1942	-0.8 °C8 January 1942	19.0 °C	1,806 mm	93	5
1941	33.0 °C4 June 1941	-3.1 °C29 December 1941	18.4 °C	2,068 mm	68	8
1940	37.1 °C16 August 1940	-9.5 °C24 January 1940	19.0 °C	1,399 mm	120	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

24.9 °C

+2.5 °C

Hot days (≥ 30 °C)

136 d/yr

+33

Frost days (< 0 °C)

2 d/yr

-7

Annual rainfall

1296 mm

-378 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	14.7 °C	+5.0 °C	35 mm	-29 mm
Feb	10.5 °C	-0.8 °C	67 mm	-23 mm
Mar	18.6 °C	+2.3 °C	118 mm	-42 mm
Apr	25.8 °C	+3.5 °C	175 mm	-78 mm
May	28.4 °C	+1.5 °C	311 mm	+20 mm
Jun	30.8 °C	+0.6 °C	221 mm	-63 mm
Jul	35.3 °C	+1.1 °C	132 mm	+5 mm
Aug	36.0 °C	+2.3 °C	44 mm	-81 mm
Sep	33.5 °C	+3.6 °C	47 mm	-28 mm
Oct	27.7 °C	+3.5 °C	25 mm	-55 mm
Nov	19.3 °C	+1.1 °C	82 mm	+6 mm
Dec	16.7 °C	+4.4 °C	39 mm	-11 mm

The year's extremes

Hottest day

41.2 °C

17 Sep 2025

Coldest day

-2.0 °C

9 Feb 2025

Wettest day

57.9 mm

18 May 2025

Windiest day

31.2 km/h

10 May 2025

Strongest gust

70.2 km/h

12 Apr 2025

Hottest feels-like

45.6 °C

5 Jul 2025

Coldest feels-like

-6.0 °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 Hengyang?

Hengyang has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 18.6 °C and it receives 1,674 mm of precipitation per year.

What is the hottest day ever recorded in Hengyang?

The hottest day measured in Hengyang between 1940 and 2025 was 5 August 2010, reaching 42.6 °C.

What is the coldest day in Hengyang?

The coldest day measured in Hengyang between 1940 and 2025 was 29 December 1991, at -13.8 °C.

Does it snow in Hengyang?

Yes. Hengyang gets on average 7.6 cm of snow per year and has around 9 frost days.

Has the climate of Hengyang warmed?

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

What is the wettest day in Hengyang?

The wettest day measured in Hengyang between 1940 and 2025 was 13 June 1994, with 164 mm of rain in 24 hours.

What was the windiest day in Hengyang?

The windiest day measured in Hengyang between 1940 and 2025 was 14 June 1946, with winds reaching 39.1 km/h.

What is the warmest month in Hengyang?

The warmest month in Hengyang is July (30.0 °C on average); the coldest is January (6.4 °C).

How much does it rain in Hengyang?

Hengyang receives on average 1,674 mm of precipitation per year, spread over about 160 rainy days.

Is it sunny in Hengyang?

Hengyang gets on average 6.9 hours of sunshine per day, roughly 2,519 hours per year over 1940-2025.

What is the biggest single-day snowfall in Hengyang?

The heaviest 24-hour snowfall measured in Hengyang between 1940 and 2025 was 6 January 2003, with 16.6 cm.

Are there tropical nights in Hengyang?

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

What was the most extreme apparent temperature in Hengyang?

In Hengyang, between 1940 and 2025, the highest apparent temperature reached 47.8 °C on 24 July 2024, and the lowest was -18.5 °C on 29 December 1991.

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