Guangzhou climate — normals and trends

Q: What is the climate of Guangzhou?

Guangzhou has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 22.9 °C and it receives 1,833 mm of precipitation per year.

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

The hottest day measured in Guangzhou between 1940 and 2025 was 22 August 2017, reaching 38.5 °C.

Q: What is the coldest day in Guangzhou?

The coldest day measured in Guangzhou between 1940 and 2025 was 12 January 1955, at 0.6 °C.

Q: Does it snow in Guangzhou?

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

Q: Has the climate of Guangzhou warmed?

Yes: Guangzhou warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Guangzhou?

The wettest day measured in Guangzhou between 1940 and 2025 was 2 July 1961, with 204 mm of rain in 24 hours.

Q: What was the windiest day in Guangzhou?

The windiest day measured in Guangzhou between 1940 and 2025 was 16 September 2018, with winds reaching 66.5 km/h.

Q: What is the warmest month in Guangzhou?

The warmest month in Guangzhou is July (29.2 °C on average); the coldest is January (14.6 °C).

Q: How much does it rain in Guangzhou?

Guangzhou receives on average 1,833 mm of precipitation per year, spread over about 173 rainy days.

Q: Is it sunny in Guangzhou?

Guangzhou gets on average 8.0 hours of sunshine per day, roughly 2,920 hours per year over 1940-2025.

Guangzhou (China) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 22.9 °C and it receives 1,833 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 (29.2 °C on average) and the coldest is January (14.6 °C). Rainfall peaks in June.

Guangzhou averages 0 frost days, 133 hot days (≥ 30 °C) and 173 rainy days per year.

Guangzhou has warmed by +1.5 °C between 1940 and 2025, or +0.18 °C per decade. This trend is statistically significant.

The hottest day of the period reached 38.5 °C (on 22 August 2017) and the coldest 0.6 °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

GuangzhouGuangdong

coords: 23.12°, 113.25°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthJulyColdest monthJanuaryWettest monthJuneDriest monthDecember

Mean daily temperature

22.9°C

Average daily high

26.6°C

Average daily low

20.0°C

Annual rainfall

1,833mm

Sunshine / day

8.0h

Mean relative humidity

76%

Average peak wind

15.2km/h

Seasonal range

14.6°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

133 d/yr

Rainy days (≥ 1 mm)

173 d/yr

Annual snowfall

0.0 cm

Average feels-like high

29.0 °C

Average feels-like low

21.8 °C

Average peak gust

31.0 km/h

Tropical nights (≥ 20 °C)

206 d/yr

Solar radiation

14.3 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.5 °C

since 1940

+0.2 °C per decade · r² = 0.59 · 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

38.5 °C

22 August 2017

Coldest day

0.6 °C

12 January 1955

Wettest day

204 mm

2 July 1961

Windiest day

66.5 km/h

16 September 2018

Strongest gust

132.8 km/h

16 September 2018

Hottest feels-like

46.9 °C

18 July 2019

Coldest feels-like

-5.1 °C

11 February 1957

Snowiest day

0.1 cm

24 January 2016

Sunniest day

13.0 h

10 June 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	36.9 °C9 July 2025	6.0 °C13 January 2025	23.7 °C	1,726 mm	157
2024	37.5 °C5 August 2024	3.6 °C24 January 2024	23.9 °C	2,172 mm	158
2023	37.6 °C30 May 2023	5.5 °C22 December 2023	23.9 °C	1,849 mm	147
2022	37.7 °C25 July 2022	5.8 °C21 February 2022	23.3 °C	2,017 mm	151
2021	36.8 °C27 July 2021	3.8 °C13 January 2021	24.1 °C	1,539 mm	168
2020	37.1 °C14 July 2020	5.8 °C31 December 2020	24.0 °C	1,456 mm	150
2019	37.7 °C18 July 2019	8.7 °C1 January 2019	24.1 °C	1,915 mm	153
2018	36.2 °C30 May 2018	4.6 °C30 January 2018	23.5 °C	1,827 mm	141
2017	38.5 °C22 August 2017	7.4 °C18 December 2017	23.6 °C	1,650 mm	139
2016	37.7 °C9 July 2016	2.6 °C24 January 2016	23.4 °C	2,335 mm	157
2015	36.9 °C8 August 2015	7.3 °C18 December 2015	23.9 °C	1,971 mm	161
2014	36.8 °C23 July 2014	4.4 °C20 February 2014	23.2 °C	1,643 mm	152
2013	36.4 °C13 July 2013	6.2 °C28 December 2013	23.1 °C	2,120 mm	129
2012	37.0 °C21 July 2012	5.1 °C26 January 2012	23.0 °C	1,961 mm	153
2011	36.6 °C28 July 2011	4.9 °C12 January 2011	22.8 °C	1,350 mm	144
2010	36.8 °C5 July 2010	3.4 °C18 December 2010	23.2 °C	1,943 mm	125
2009	37.2 °C18 July 2009	4.0 °C11 January 2009	23.5 °C	1,463 mm	160
2008	37.8 °C28 July 2008	4.7 °C3 February 2008	22.9 °C	1,997 mm	142
2007	36.7 °C14 July 2007	6.0 °C29 January 2007	23.6 °C	1,494 mm	145
2006	37.0 °C13 July 2006	5.7 °C7 January 2006	23.6 °C	1,917 mm	154
2005	37.8 °C18 July 2005	3.6 °C1 January 2005	23.2 °C	1,807 mm	157
2004	38.4 °C1 July 2004	4.8 °C22 January 2004	23.3 °C	1,302 mm	147
2003	36.7 °C15 July 2003	5.9 °C6 January 2003	23.5 °C	1,555 mm	148
2002	36.1 °C14 July 2002	4.5 °C27 December 2002	23.7 °C	1,795 mm	146
2001	36.1 °C23 August 2001	5.8 °C24 December 2001	23.4 °C	1,968 mm	142
2000	36.3 °C5 June 2000	5.3 °C27 January 2000	23.3 °C	1,861 mm	146
1999	36.7 °C20 August 1999	2.5 °C23 December 1999	23.6 °C	1,804 mm	149
1998	36.5 °C31 July 1998	6.0 °C6 February 1998	23.8 °C	2,018 mm	148
1997	36.8 °C30 August 1997	6.3 °C12 January 1997	23.1 °C	2,567 mm	141
1996	36.3 °C26 July 1996	3.7 °C20 February 1996	22.8 °C	1,992 mm	145
1995	36.5 °C23 July 1995	5.4 °C7 January 1995	22.7 °C	1,807 mm	138
1994	36.9 °C10 July 1994	5.5 °C21 January 1994	23.2 °C	1,816 mm	132
1993	35.7 °C29 July 1993	3.7 °C17 January 1993	22.7 °C	2,069 mm	128
1992	36.2 °C7 August 1992	5.4 °C15 January 1992	22.6 °C	2,422 mm	128
1991	36.1 °C4 June 1991	2.0 °C29 December 1991	23.6 °C	1,283 mm	158
1990	37.7 °C17 August 1990	5.0 °C1 February 1990	23.4 °C	1,721 mm	142
1989	37.0 °C16 July 1989	5.0 °C14 January 1989	23.0 °C	1,596 mm	138
1988	37.2 °C9 July 1988	6.2 °C13 December 1988	22.4 °C	1,917 mm	133
1987	38.4 °C13 July 1987	5.7 °C7 December 1987	23.5 °C	2,124 mm	132
1986	37.1 °C31 July 1986	3.7 °C1 March 1986	22.9 °C	1,618 mm	151
1985	35.9 °C22 June 1985	4.0 °C25 December 1985	22.4 °C	2,113 mm	141
1984	36.0 °C26 July 1984	3.8 °C10 January 1984	22.1 °C	1,706 mm	122
1983	36.2 °C8 July 1983	3.8 °C30 December 1983	22.4 °C	2,681 mm	147
1982	38.3 °C29 July 1982	3.6 °C28 December 1982	22.8 °C	2,225 mm	134
1981	36.7 °C8 August 1981	5.7 °C14 January 1981	23.0 °C	2,031 mm	124
1980	37.7 °C10 July 1980	4.0 °C6 February 1980	23.1 °C	1,661 mm	140
1979	36.2 °C28 July 1979	4.2 °C1 February 1979	22.6 °C	2,039 mm	130
1978	35.6 °C5 July 1978	3.7 °C22 January 1978	22.6 °C	2,206 mm	130
1977	36.0 °C25 July 1977	2.3 °C31 January 1977	23.0 °C	1,604 mm	146
1976	36.5 °C26 May 1976	2.9 °C28 December 1976	22.2 °C	1,972 mm	116
1975	35.2 °C7 August 1975	3.1 °C14 December 1975	22.7 °C	2,626 mm	135
1974	36.0 °C20 August 1974	3.1 °C2 January 1974	22.7 °C	2,034 mm	147
1973	35.4 °C23 June 1973	4.8 °C26 December 1973	23.1 °C	2,989 mm	125
1972	36.1 °C11 July 1972	3.2 °C9 February 1972	22.6 °C	2,459 mm	128
1971	36.1 °C15 July 1971	4.4 °C6 January 1971	22.5 °C	2,023 mm	122
1970	35.6 °C6 July 1970	4.5 °C16 January 1970	22.4 °C	2,081 mm	135
1969	36.2 °C27 July 1969	2.5 °C6 February 1969	22.3 °C	2,019 mm	130
1968	36.2 °C25 July 1968	4.9 °C7 February 1968	22.7 °C	2,200 mm	117
1967	36.1 °C17 July 1967	2.1 °C17 January 1967	22.5 °C	1,646 mm	134
1966	33.6 °C17 August 1966	4.6 °C1 January 1966	22.7 °C	1,694 mm	120
1965	34.2 °C14 July 1965	3.8 °C31 December 1965	22.0 °C	2,053 mm	70
1964	36.5 °C7 August 1964	5.2 °C22 February 1964	22.8 °C	1,901 mm	146
1963	37.0 °C31 May 1963	1.1 °C16 January 1963	22.9 °C	1,323 mm	148
1962	35.8 °C2 August 1962	3.6 °C28 January 1962	22.5 °C	1,633 mm	134
1961	37.5 °C1 July 1961	2.3 °C19 January 1961	22.9 °C	2,569 mm	131
1960	36.6 °C21 August 1960	3.5 °C25 January 1960	23.0 °C	1,736 mm	125
1959	36.4 °C29 August 1959	5.4 °C14 January 1959	22.7 °C	2,305 mm	117
1958	36.4 °C16 July 1958	3.2 °C17 January 1958	22.6 °C	1,367 mm	133
1957	36.5 °C14 August 1957	1.3 °C11 February 1957	22.4 °C	2,118 mm	125
1956	36.0 °C4 September 1956	2.5 °C10 January 1956	22.7 °C	978 mm	157
1955	33.4 °C3 May 1955	0.6 °C12 January 1955	22.5 °C	1,244 mm	124
1954	34.5 °C22 July 1954	4.7 °C17 December 1954	22.7 °C	1,148 mm	124
1953	34.5 °C17 August 1953	4.8 °C12 December 1953	22.7 °C	1,437 mm	120
1952	33.2 °C11 July 1952	4.4 °C19 February 1952	22.9 °C	1,625 mm	111
1951	32.9 °C13 August 1951	3.3 °C13 January 1951	22.3 °C	1,772 mm	96
1950	33.1 °C17 July 1950	5.0 °C10 December 1950	22.4 °C	1,928 mm	106
1949	36.2 °C8 June 1949	3.7 °C9 January 1949	23.0 °C	1,233 mm	119
1948	33.8 °C6 July 1948	4.0 °C27 January 1948	22.7 °C	1,450 mm	103
1947	33.0 °C29 August 1947	4.6 °C20 December 1947	22.0 °C	1,647 mm	84
1946	36.2 °C17 July 1946	5.1 °C6 January 1946	23.0 °C	982 mm	143
1945	33.1 °C30 July 1945	4.4 °C17 January 1945	21.3 °C	1,597 mm	89
1944	34.3 °C8 April 1944	3.1 °C21 December 1944	22.2 °C	1,865 mm	80
1943	37.0 °C26 May 1943	3.9 °C12 January 1943	22.5 °C	788 mm	131
1942	33.0 °C15 August 1942	4.9 °C7 December 1942	22.0 °C	1,898 mm	108
1941	32.9 °C29 June 1941	5.3 °C29 December 1941	22.0 °C	2,056 mm	80
1940	34.4 °C31 August 1940	2.8 °C25 January 1940	21.8 °C	1,573 mm	99

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

27.8 °C

+1.2 °C

Hot days (≥ 30 °C)

157 d/yr

+24

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1726 mm

-107 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	21.5 °C	+2.8 °C	2 mm	-33 mm
Feb	20.7 °C	+1.0 °C	18 mm	-44 mm
Mar	24.0 °C	+0.9 °C	68 mm	-38 mm
Apr	28.5 °C	+1.7 °C	73 mm	-121 mm
May	29.9 °C	0.0 °C	265 mm	-45 mm
Jun	32.0 °C	+0.5 °C	355 mm	+35 mm
Jul	33.7 °C	+1.0 °C	279 mm	+59 mm
Aug	32.6 °C	+0.3 °C	322 mm	+70 mm
Sep	32.8 °C	+1.5 °C	251 mm	+69 mm
Oct	30.1 °C	+1.5 °C	64 mm	-10 mm
Nov	24.5 °C	-0.1 °C	12 mm	-32 mm
Dec	23.1 °C	+2.8 °C	17 mm	-16 mm

The year's extremes

Hottest day

36.9 °C

9 Jul 2025

Coldest day

6.0 °C

13 Jan 2025

Wettest day

66.9 mm

5 Aug 2025

Windiest day

46.7 km/h

24 Sep 2025

Strongest gust

100.4 km/h

24 Sep 2025

Hottest feels-like

44.6 °C

26 Jul 2025

Coldest feels-like

3.0 °C

12 Jan 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 Guangzhou?

Guangzhou has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 22.9 °C and it receives 1,833 mm of precipitation per year.

What is the hottest day ever recorded in Guangzhou?

The hottest day measured in Guangzhou between 1940 and 2025 was 22 August 2017, reaching 38.5 °C.

What is the coldest day in Guangzhou?

The coldest day measured in Guangzhou between 1940 and 2025 was 12 January 1955, at 0.6 °C.

Does it snow in Guangzhou?

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

Has the climate of Guangzhou warmed?

Yes: Guangzhou warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Guangzhou?

The wettest day measured in Guangzhou between 1940 and 2025 was 2 July 1961, with 204 mm of rain in 24 hours.

What was the windiest day in Guangzhou?

The windiest day measured in Guangzhou between 1940 and 2025 was 16 September 2018, with winds reaching 66.5 km/h.

What is the warmest month in Guangzhou?

The warmest month in Guangzhou is July (29.2 °C on average); the coldest is January (14.6 °C).

How much does it rain in Guangzhou?

Guangzhou receives on average 1,833 mm of precipitation per year, spread over about 173 rainy days.

Is it sunny in Guangzhou?

Guangzhou gets on average 8.0 hours of sunshine per day, roughly 2,920 hours per year over 1940-2025.

What is the biggest single-day snowfall in Guangzhou?

The heaviest 24-hour snowfall measured in Guangzhou between 1940 and 2025 was 24 January 2016, with 0.1 cm.

Are there tropical nights in Guangzhou?

Yes: Guangzhou has on average 206 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Guangzhou?

In Guangzhou, between 1940 and 2025, the highest apparent temperature reached 46.9 °C on 18 July 2019, and the lowest was -5.1 °C on 11 February 1957.

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