Heyuan climate — normals and trends

Q: What is the climate of Heyuan?

Heyuan has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 21.1 °C and it receives 1,633 mm of precipitation per year.

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

The hottest day measured in Heyuan between 1940 and 2025 was 18 July 2005, reaching 37.8 °C.

Q: What is the coldest day in Heyuan?

The coldest day measured in Heyuan between 1940 and 2025 was 12 January 1955, at -2.7 °C.

Q: Does it snow in Heyuan?

Almost never: Heyuan sees virtually no snow, with about 0 frost days per year.

Q: Has the climate of Heyuan warmed?

Yes: Heyuan warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Heyuan?

The wettest day measured in Heyuan between 1940 and 2025 was 6 June 1947, with 226 mm of rain in 24 hours.

Q: What was the windiest day in Heyuan?

The windiest day measured in Heyuan between 1940 and 2025 was 22 September 2013, with winds reaching 42.7 km/h.

Q: What is the warmest month in Heyuan?

The warmest month in Heyuan is July (27.8 °C on average); the coldest is January (12.3 °C).

Q: How much does it rain in Heyuan?

Heyuan receives on average 1,633 mm of precipitation per year, spread over about 165 rainy days.

Q: Is it sunny in Heyuan?

Heyuan gets on average 8.1 hours of sunshine per day, roughly 2,957 hours per year over 1940-2025.

Heyuan (China) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 21.1 °C and it receives 1,633 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 (27.8 °C on average) and the coldest is January (12.3 °C). Rainfall peaks in June.

Heyuan averages 0 frost days, 97 hot days (≥ 30 °C) and 165 rainy days per year.

Heyuan has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.

The hottest day of the period reached 37.8 °C (on 18 July 2005) and the coldest -2.7 °C (on 12 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

HeyuanGuangdong

coords: 23.73°, 114.68°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthJulyColdest monthJanuaryWettest monthJuneDriest monthDecember

Mean daily temperature

21.1°C

Average daily high

25.2°C

Average daily low

18.0°C

Annual rainfall

1,633mm

Sunshine / day

8.1h

Mean relative humidity

78%

Average peak wind

12.0km/h

Seasonal range

15.5°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

97 d/yr

Rainy days (≥ 1 mm)

165 d/yr

Annual snowfall

0.0 cm

Average feels-like high

27.5 °C

Average feels-like low

19.5 °C

Average peak gust

32.1 km/h

Tropical nights (≥ 20 °C)

178 d/yr

Solar radiation

14.4 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.6 °C

since 1940

+0.2 °C per decade · r² = 0.57 · 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

37.8 °C

18 July 2005

Coldest day

-2.7 °C

12 January 1955

Wettest day

226 mm

6 June 1947

Windiest day

42.7 km/h

22 September 2013

Strongest gust

127.8 km/h

1 September 1962

Hottest feels-like

45.5 °C

18 July 2019

Coldest feels-like

-8.0 °C

16 January 1967

Snowiest day

0.4 cm

16 January 1993

Sunniest day

13.0 h

7 July 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	36.2 °C10 June 2025	2.9 °C13 January 2025	22.1 °C	1,591 mm	132	0
2024	36.2 °C5 August 2024	0.0 °C24 January 2024	22.2 °C	2,066 mm	118	0
2023	37.6 °C30 May 2023	2.3 °C30 January 2023	22.2 °C	1,452 mm	118	0
2022	36.1 °C24 July 2022	3.4 °C19 December 2022	21.8 °C	1,781 mm	118	0
2021	36.5 °C23 July 2021	0.2 °C13 January 2021	23.0 °C	1,185 mm	160	0
2020	35.6 °C14 July 2020	3.1 °C31 December 2020	22.4 °C	1,249 mm	127	0
2019	37.0 °C24 August 2019	5.3 °C1 January 2019	22.4 °C	1,761 mm	127	0
2018	36.7 °C31 May 2018	1.8 °C6 February 2018	22.0 °C	1,501 mm	116	0
2017	36.7 °C29 July 2017	5.7 °C18 December 2017	22.0 °C	1,415 mm	124	0
2016	36.4 °C8 July 2016	0.4 °C25 January 2016	21.8 °C	2,168 mm	114	0
2015	36.7 °C7 August 2015	4.2 °C18 December 2015	22.2 °C	1,627 mm	117	0
2014	35.6 °C9 July 2014	1.4 °C23 January 2014	21.7 °C	1,298 mm	137	0
2013	35.0 °C21 June 2013	2.5 °C30 December 2013	21.4 °C	1,862 mm	102	0
2012	35.8 °C1 August 2012	2.2 °C31 December 2012	21.4 °C	1,739 mm	122	0
2011	36.4 °C29 August 2011	2.8 °C12 January 2011	21.1 °C	1,146 mm	124	0
2010	35.2 °C8 September 2010	0.5 °C18 December 2010	21.3 °C	1,957 mm	101	0
2009	37.1 °C2 August 2009	0.2 °C11 January 2009	22.0 °C	1,180 mm	135	0
2008	36.7 °C28 July 2008	2.1 °C3 February 2008	21.3 °C	1,711 mm	112	0
2007	34.9 °C3 August 2007	2.2 °C29 January 2007	21.8 °C	1,381 mm	122	0
2006	36.0 °C13 July 2006	2.4 °C7 January 2006	21.8 °C	2,023 mm	111	0
2005	37.8 °C18 July 2005	0.9 °C1 January 2005	21.5 °C	1,830 mm	116	0
2004	37.6 °C1 July 2004	2.7 °C22 January 2004	21.7 °C	1,179 mm	122	0
2003	35.9 °C2 August 2003	3.0 °C21 December 2003	21.9 °C	1,393 mm	125	0
2002	35.8 °C5 July 2002	1.6 °C27 December 2002	22.2 °C	1,274 mm	124	0
2001	35.4 °C4 July 2001	2.7 °C24 December 2001	21.7 °C	1,757 mm	112	0
2000	34.9 °C5 June 2000	2.2 °C1 February 2000	21.4 °C	1,847 mm	108	0
1999	35.9 °C20 August 1999	0.3 °C23 December 1999	21.7 °C	1,702 mm	102	0
1998	34.3 °C19 August 1998	4.0 °C19 January 1998	22.0 °C	1,660 mm	112	0
1997	35.3 °C29 August 1997	3.9 °C11 January 1997	21.2 °C	2,183 mm	82	0
1996	34.9 °C25 July 1996	1.4 °C20 February 1996	21.1 °C	1,666 mm	112	0
1995	35.3 °C23 July 1995	3.0 °C7 January 1995	20.9 °C	1,776 mm	97	0
1994	36.1 °C10 July 1994	2.2 °C21 January 1994	21.4 °C	1,856 mm	88	0
1993	34.0 °C26 August 1993	0.8 °C29 January 1993	20.8 °C	1,868 mm	94	0
1992	34.7 °C30 July 1992	2.8 °C15 January 1992	20.8 °C	2,022 mm	99	0
1991	35.9 °C4 June 1991	-0.9 °C29 December 1991	21.6 °C	1,276 mm	123	1
1990	36.0 °C17 August 1990	2.0 °C1 February 1990	21.5 °C	1,885 mm	96	0
1989	35.7 °C16 July 1989	2.4 °C14 January 1989	21.3 °C	1,460 mm	105	0
1988	36.4 °C9 July 1988	4.2 °C12 December 1988	20.6 °C	1,763 mm	101	0
1987	35.3 °C13 July 1987	3.1 °C7 December 1987	21.7 °C	1,793 mm	103	0
1986	35.3 °C10 July 1986	1.3 °C7 January 1986	21.1 °C	1,765 mm	114	0
1985	35.6 °C22 June 1985	0.7 °C17 December 1985	20.6 °C	1,906 mm	102	0
1984	34.4 °C29 July 1984	1.5 °C25 December 1984	20.3 °C	1,722 mm	89	0
1983	35.6 °C11 August 1983	1.5 °C30 December 1983	20.8 °C	2,478 mm	111	0
1982	36.3 °C28 July 1982	1.3 °C28 December 1982	21.2 °C	1,910 mm	98	0
1981	35.9 °C8 August 1981	3.3 °C21 December 1981	21.2 °C	1,948 mm	93	0
1980	36.1 °C10 July 1980	0.7 °C31 January 1980	21.2 °C	1,860 mm	107	0
1979	34.8 °C28 July 1979	1.5 °C1 February 1979	20.8 °C	1,763 mm	88	0
1978	34.5 °C15 July 1978	1.7 °C22 January 1978	20.8 °C	2,095 mm	95	0
1977	34.5 °C25 July 1977	0.2 °C30 January 1977	21.3 °C	1,257 mm	112	0
1976	35.4 °C25 May 1976	-0.1 °C28 December 1976	20.4 °C	1,792 mm	91	1
1975	33.8 °C30 July 1975	1.0 °C14 December 1975	20.9 °C	2,398 mm	90	0
1974	34.9 °C21 August 1974	0.8 °C2 January 1974	20.9 °C	1,786 mm	116	0
1973	33.5 °C23 August 1973	1.3 °C27 December 1973	21.3 °C	2,620 mm	85	0
1972	35.3 °C21 July 1972	0.7 °C9 February 1972	21.0 °C	2,123 mm	102	0
1971	36.0 °C20 July 1971	1.5 °C6 January 1971	20.8 °C	1,525 mm	96	0
1970	34.8 °C1 August 1970	1.6 °C5 January 1970	20.7 °C	1,928 mm	106	0
1969	35.1 °C27 July 1969	0.1 °C5 February 1969	20.6 °C	1,628 mm	105	0
1968	35.3 °C24 July 1968	2.6 °C7 February 1968	21.0 °C	1,953 mm	85	0
1967	35.3 °C29 August 1967	-1.7 °C16 January 1967	20.7 °C	1,376 mm	104	2
1966	32.3 °C13 August 1966	0.8 °C28 December 1966	20.7 °C	1,606 mm	61	0
1965	33.1 °C26 July 1965	1.2 °C31 December 1965	20.2 °C	1,658 mm	30	0
1964	36.2 °C7 August 1964	2.0 °C26 February 1964	21.1 °C	1,606 mm	116	0
1963	37.0 °C5 September 1963	-1.4 °C16 January 1963	21.5 °C	787 mm	132	1
1962	35.2 °C2 August 1962	0.8 °C28 January 1962	20.8 °C	1,628 mm	108	0
1961	35.0 °C30 June 1961	-0.4 °C19 January 1961	21.3 °C	2,212 mm	87	1
1960	35.5 °C21 August 1960	0.9 °C25 January 1960	21.4 °C	1,815 mm	86	0
1959	35.3 °C29 August 1959	1.7 °C11 January 1959	21.1 °C	1,988 mm	81	0
1958	34.6 °C15 July 1958	1.2 °C16 January 1958	20.9 °C	1,283 mm	102	0
1957	35.2 °C15 August 1957	-1.8 °C11 February 1957	20.8 °C	1,868 mm	94	3
1956	35.4 °C3 September 1956	-0.5 °C10 January 1956	20.9 °C	989 mm	108	2
1955	33.0 °C23 September 1955	-2.7 °C12 January 1955	20.8 °C	1,069 mm	71	2
1954	33.1 °C15 August 1954	2.3 °C17 December 1954	21.1 °C	897 mm	95	0
1953	34.8 °C12 August 1953	2.1 °C12 December 1953	21.1 °C	1,174 mm	76	0
1952	31.8 °C1 September 1952	0.6 °C19 February 1952	21.1 °C	1,441 mm	54	0
1951	33.1 °C31 July 1951	-0.9 °C13 January 1951	20.4 °C	1,768 mm	36	2
1950	31.8 °C17 July 1950	3.1 °C10 December 1950	20.6 °C	1,637 mm	33	0
1949	32.9 °C14 September 1949	0.5 °C10 January 1949	21.3 °C	1,166 mm	75	0
1948	33.1 °C6 July 1948	0.9 °C27 January 1948	20.9 °C	1,312 mm	49	0
1947	31.9 °C21 June 1947	2.2 °C20 December 1947	20.2 °C	1,888 mm	27	0
1946	34.6 °C17 July 1946	1.1 °C7 January 1946	21.4 °C	748 mm	114	0
1945	31.7 °C30 July 1945	0.9 °C4 February 1945	19.2 °C	1,418 mm	36	0
1944	31.8 °C26 September 1944	0.6 °C20 December 1944	20.4 °C	1,265 mm	26	0
1943	34.3 °C25 May 1943	1.0 °C12 January 1943	20.9 °C	659 mm	99	0
1942	32.0 °C15 August 1942	2.3 °C7 December 1942	20.2 °C	1,510 mm	54	0
1941	31.7 °C29 June 1941	2.1 °C29 December 1941	20.2 °C	1,679 mm	31	0
1940	34.1 °C30 August 1940	-0.3 °C24 January 1940	20.2 °C	1,280 mm	56	2

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

26.6 °C

+1.4 °C

Hot days (≥ 30 °C)

132 d/yr

+35

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1591 mm

-42 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	19.7 °C	+2.7 °C	4 mm	-35 mm
Feb	18.9 °C	+0.8 °C	25 mm	-40 mm
Mar	22.5 °C	+0.9 °C	77 mm	-31 mm
Apr	26.8 °C	+1.5 °C	102 mm	-73 mm
May	28.7 °C	+0.4 °C	183 mm	-73 mm
Jun	31.5 °C	+1.6 °C	242 mm	-56 mm
Jul	32.6 °C	+1.2 °C	335 mm	+130 mm
Aug	31.8 °C	+0.6 °C	322 mm	+102 mm
Sep	31.9 °C	+1.6 °C	242 mm	+96 mm
Oct	29.2 °C	+1.8 °C	28 mm	-25 mm
Nov	23.0 °C	-0.2 °C	16 mm	-21 mm
Dec	21.7 °C	+3.1 °C	17 mm	-16 mm

The year's extremes

Hottest day

36.2 °C

10 Jun 2025

Coldest day

2.9 °C

13 Jan 2025

Wettest day

64.1 mm

5 Aug 2025

Windiest day

32.5 km/h

12 Apr 2025

Strongest gust

79.9 km/h

12 Apr 2025

Hottest feels-like

43.9 °C

7 Jul 2025

Coldest feels-like

-1.2 °C

9 Feb 2025

Sunniest day

13.0 h

7 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 Heyuan?

Heyuan has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 21.1 °C and it receives 1,633 mm of precipitation per year.

What is the hottest day ever recorded in Heyuan?

The hottest day measured in Heyuan between 1940 and 2025 was 18 July 2005, reaching 37.8 °C.

What is the coldest day in Heyuan?

The coldest day measured in Heyuan between 1940 and 2025 was 12 January 1955, at -2.7 °C.

Does it snow in Heyuan?

Almost never: Heyuan sees virtually no snow, with about 0 frost days per year.

Has the climate of Heyuan warmed?

Yes: Heyuan warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Heyuan?

The wettest day measured in Heyuan between 1940 and 2025 was 6 June 1947, with 226 mm of rain in 24 hours.

What was the windiest day in Heyuan?

The windiest day measured in Heyuan between 1940 and 2025 was 22 September 2013, with winds reaching 42.7 km/h.

What is the warmest month in Heyuan?

The warmest month in Heyuan is July (27.8 °C on average); the coldest is January (12.3 °C).

How much does it rain in Heyuan?

Heyuan receives on average 1,633 mm of precipitation per year, spread over about 165 rainy days.

Is it sunny in Heyuan?

Heyuan gets on average 8.1 hours of sunshine per day, roughly 2,957 hours per year over 1940-2025.

What is the biggest single-day snowfall in Heyuan?

The heaviest 24-hour snowfall measured in Heyuan between 1940 and 2025 was 16 January 1993, with 0.4 cm.

Are there tropical nights in Heyuan?

Yes: Heyuan has on average 178 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Heyuan?

In Heyuan, between 1940 and 2025, the highest apparent temperature reached 45.5 °C on 18 July 2019, and the lowest was -8.0 °C on 16 January 1967.

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