Gulou climate — normals and trends

Q: What is the climate of Gulou?

Gulou has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 18.5 °C and it receives 1,228 mm of precipitation per year.

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

The hottest day measured in Gulou between 1940 and 2025 was 17 August 2011, reaching 44.3 °C.

Q: What is the coldest day in Gulou?

The coldest day measured in Gulou between 1940 and 2025 was 9 January 1956, at -7.2 °C.

Q: Does it snow in Gulou?

Yes. Gulou gets on average 1.8 cm of snow per year and has around 1 frost days.

Q: Has the climate of Gulou warmed?

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

Q: What is the wettest day in Gulou?

The wettest day measured in Gulou between 1940 and 2025 was 20 July 1987, with 146 mm of rain in 24 hours.

Q: What was the windiest day in Gulou?

The windiest day measured in Gulou between 1940 and 2025 was 24 May 1946, with winds reaching 70.1 km/h.

Q: What is the warmest month in Gulou?

The warmest month in Gulou is August (28.6 °C on average); the coldest is January (8.0 °C).

Q: How much does it rain in Gulou?

Gulou receives on average 1,228 mm of precipitation per year, spread over about 156 rainy days.

Q: Is it sunny in Gulou?

Gulou gets on average 6.2 hours of sunshine per day, roughly 2,263 hours per year over 1940-2025.

Gulou (China) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 18.5 °C and it receives 1,228 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 (8.0 °C). Rainfall peaks in July.

Gulou averages 1 frost days, 76 hot days (≥ 30 °C) and 156 rainy days per year.

Gulou 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 3 to 0 per year over the period.

The hottest day of the period reached 44.3 °C (on 17 August 2011) and the coldest -7.2 °C (on 9 January 1956).

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

GulouChongqing Municipality

coords: 30.18°, 106.17°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthAugustColdest monthJanuaryWettest monthJulyDriest monthJanuary

Mean daily temperature

18.5°C

Average daily high

21.9°C

Average daily low

15.6°C

Annual rainfall

1,228mm

Sunshine / day

6.2h

Mean relative humidity

78%

Average peak wind

10.8km/h

Seasonal range

20.6°C

Frost days (< 0 °C)

1 d/yr

Hot days (≥ 30 °C)

76 d/yr

Rainy days (≥ 1 mm)

156 d/yr

Annual snowfall

1.8 cm

Average feels-like high

23.3 °C

Average feels-like low

16.2 °C

Average peak gust

21.8 km/h

Tropical nights (≥ 20 °C)

122 d/yr

Solar radiation

11.6 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.0 °C

since 1940

+0.1 °C per decade · r² = 0.26 · 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

44.3 °C

17 August 2011

Coldest day

-7.2 °C

9 January 1956

Wettest day

146 mm

20 July 1987

Windiest day

70.1 km/h

24 May 1946

Strongest gust

82.8 km/h

22 May 1946

Hottest feels-like

47.7 °C

17 July 2025

Coldest feels-like

-11.1 °C

11 January 1956

Snowiest day

7.5 cm

7 January 1956

Sunniest day

13.9 h

27 June 2025

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	43.0 °C5 August 2025	1.0 °C27 January 2025	20.1 °C	1,424 mm	111	0
2024	43.0 °C4 September 2024	1.4 °C16 December 2024	20.4 °C	943 mm	110	0
2023	37.9 °C9 August 2023	0.8 °C19 January 2023	19.3 °C	1,297 mm	89	0
2022	43.5 °C20 August 2022	1.4 °C19 December 2022	20.0 °C	984 mm	101	0
2021	40.6 °C3 August 2021	-1.5 °C12 January 2021	19.0 °C	1,165 mm	78	3
2020	38.8 °C29 August 2020	1.4 °C21 December 2020	18.9 °C	1,228 mm	80	0
2019	38.9 °C25 August 2019	3.3 °C22 January 2019	18.8 °C	1,118 mm	76	0
2018	39.5 °C20 July 2018	1.0 °C9 January 2018	19.0 °C	1,082 mm	90	0
2017	42.9 °C28 July 2017	2.5 °C21 December 2017	19.2 °C	977 mm	80	0
2016	40.4 °C25 August 2016	-2.3 °C25 January 2016	19.2 °C	1,009 mm	91	3
2015	36.9 °C2 August 2015	1.9 °C17 December 2015	19.4 °C	1,091 mm	84	0
2014	41.3 °C6 August 2014	1.8 °C13 February 2014	18.6 °C	1,246 mm	53	0
2013	41.9 °C31 July 2013	-0.8 °C1 January 2013	19.9 °C	1,013 mm	109	1
2012	38.3 °C11 August 2012	0.1 °C31 December 2012	18.3 °C	1,078 mm	67	0
2011	44.3 °C17 August 2011	-0.8 °C12 January 2011	19.0 °C	847 mm	100	2
2010	41.1 °C11 August 2010	-0.7 °C16 December 2010	18.6 °C	909 mm	73	2
2009	38.5 °C19 July 2009	2.0 °C27 January 2009	18.9 °C	997 mm	79	0
2008	36.0 °C20 July 2008	-0.4 °C29 January 2008	18.5 °C	1,179 mm	75	2
2007	37.1 °C22 August 2007	1.4 °C19 January 2007	19.1 °C	1,192 mm	87	0
2006	42.9 °C15 August 2006	2.3 °C9 January 2006	19.8 °C	896 mm	97	0
2005	36.1 °C1 July 2005	0.2 °C2 January 2005	18.6 °C	1,321 mm	83	0
2004	38.4 °C11 August 2004	-0.9 °C31 December 2004	18.5 °C	1,358 mm	72	1
2003	38.1 °C1 August 2003	1.6 °C6 January 2003	18.9 °C	1,144 mm	66	0
2002	37.9 °C13 July 2002	1.6 °C28 December 2002	19.0 °C	1,330 mm	76	0
2001	39.8 °C6 August 2001	0.3 °C22 December 2001	19.1 °C	1,075 mm	67	0
2000	38.0 °C27 July 2000	1.2 °C1 January 2000	18.5 °C	1,336 mm	75	0
1999	36.6 °C1 August 1999	-0.2 °C26 December 1999	18.8 °C	1,658 mm	67	1
1998	36.3 °C19 July 1998	1.3 °C20 January 1998	19.4 °C	1,480 mm	82	0
1997	42.0 °C31 August 1997	1.4 °C24 January 1997	18.8 °C	990 mm	79	0
1996	37.6 °C23 August 1996	0.6 °C22 February 1996	18.0 °C	1,301 mm	78	0
1995	40.6 °C6 September 1995	1.2 °C6 January 1995	18.6 °C	1,199 mm	82	0
1994	41.5 °C5 August 1994	0.6 °C18 January 1994	19.0 °C	1,186 mm	93	0
1993	36.1 °C13 July 1993	-1.1 °C24 January 1993	18.0 °C	1,316 mm	55	2
1992	41.2 °C10 August 1992	1.1 °C3 January 1992	18.1 °C	1,080 mm	74	0
1991	37.6 °C25 July 1991	-2.7 °C28 December 1991	18.3 °C	1,125 mm	75	2
1990	37.5 °C6 August 1990	1.9 °C1 February 1990	18.8 °C	1,127 mm	89	0
1989	37.8 °C22 July 1989	1.5 °C14 January 1989	17.9 °C	1,239 mm	64	0
1988	36.9 °C2 May 1988	1.8 °C11 February 1988	18.2 °C	1,332 mm	72	0
1987	35.5 °C25 July 1987	1.5 °C5 December 1987	18.5 °C	1,364 mm	56	0
1986	37.5 °C11 August 1986	0.2 °C2 March 1986	17.8 °C	1,372 mm	69	0
1985	37.7 °C5 August 1985	0.5 °C18 January 1985	18.0 °C	1,308 mm	71	0
1984	37.1 °C1 August 1984	1.0 °C9 January 1984	17.9 °C	1,342 mm	70	0
1983	35.6 °C25 July 1983	1.5 °C12 January 1983	18.3 °C	1,207 mm	54	0
1982	37.0 °C3 August 1982	-2.9 °C27 December 1982	17.7 °C	1,399 mm	59	3
1981	37.3 °C6 August 1981	0.7 °C23 December 1981	18.3 °C	969 mm	78	0
1980	37.6 °C28 July 1980	-0.1 °C5 February 1980	18.3 °C	1,270 mm	58	2
1979	36.7 °C11 August 1979	-0.7 °C23 November 1979	18.5 °C	1,336 mm	66	2
1978	40.9 °C4 September 1978	0.0 °C18 January 1978	19.0 °C	942 mm	88	0
1977	38.0 °C8 August 1977	-1.8 °C30 January 1977	18.4 °C	1,027 mm	77	4
1976	40.1 °C7 August 1976	-0.9 °C29 December 1976	18.0 °C	1,133 mm	65	1
1975	38.8 °C9 September 1975	-1.6 °C16 December 1975	18.6 °C	1,196 mm	75	5
1974	37.6 °C30 July 1974	0.8 °C18 January 1974	18.2 °C	1,376 mm	54	0
1973	37.6 °C25 August 1973	1.7 °C2 January 1973	19.1 °C	1,302 mm	81	0
1972	40.6 °C26 August 1972	1.4 °C4 February 1972	18.6 °C	1,193 mm	87	0
1971	41.0 °C2 September 1971	0.9 °C31 January 1971	18.7 °C	926 mm	75	0
1970	38.2 °C18 August 1970	-0.4 °C9 January 1970	18.2 °C	1,189 mm	76	1
1969	39.2 °C12 August 1969	-1.1 °C31 January 1969	18.8 °C	1,048 mm	90	2
1968	36.9 °C31 July 1968	0.9 °C7 February 1968	17.9 °C	1,591 mm	56	0
1967	38.5 °C30 August 1967	-1.7 °C16 January 1967	18.1 °C	1,487 mm	83	4
1966	34.6 °C3 August 1966	0.0 °C29 January 1966	18.1 °C	1,112 mm	65	0
1965	33.6 °C29 July 1965	-1.6 °C20 December 1965	17.7 °C	1,459 mm	46	1
1964	38.9 °C20 July 1964	1.2 °C26 February 1964	18.6 °C	1,516 mm	70	0
1963	37.3 °C4 June 1963	-2.5 °C15 January 1963	19.1 °C	1,245 mm	82	2
1962	37.5 °C16 July 1962	-0.2 °C27 January 1962	18.5 °C	1,289 mm	77	1
1961	38.0 °C23 July 1961	-0.6 °C17 January 1961	19.0 °C	1,365 mm	98	1
1960	37.2 °C6 August 1960	0.4 °C3 January 1960	18.7 °C	1,441 mm	77	0
1959	42.3 °C28 August 1959	-0.2 °C13 January 1959	19.3 °C	927 mm	98	1
1958	37.2 °C26 July 1958	0.4 °C16 January 1958	18.9 °C	1,149 mm	86	0
1957	38.7 °C31 August 1957	-0.3 °C17 January 1957	18.5 °C	1,232 mm	59	2
1956	33.9 °C4 August 1956	-7.2 °C9 January 1956	18.0 °C	1,332 mm	74	7
1955	33.6 °C8 August 1955	-4.0 °C6 January 1955	18.1 °C	1,157 mm	66	7
1954	34.3 °C3 September 1954	-0.8 °C23 January 1954	18.2 °C	1,703 mm	70	5
1953	36.3 °C18 August 1953	1.1 °C27 January 1953	18.9 °C	1,476 mm	77	0
1952	35.6 °C4 July 1952	-0.4 °C7 January 1952	18.6 °C	1,720 mm	65	2
1951	34.3 °C8 September 1951	-2.8 °C14 January 1951	18.3 °C	1,292 mm	78	1
1950	34.1 °C23 July 1950	0.4 °C9 December 1950	18.0 °C	1,638 mm	50	0
1949	34.4 °C15 September 1949	-2.3 °C12 January 1949	18.4 °C	1,351 mm	86	3
1948	34.1 °C28 July 1948	-1.7 °C28 January 1948	18.4 °C	1,319 mm	79	5
1947	33.3 °C19 May 1947	-2.7 °C20 December 1947	18.7 °C	1,197 mm	81	4
1946	38.3 °C20 July 1946	0.4 °C8 January 1946	19.1 °C	868 mm	101	0
1945	33.8 °C21 July 1945	-4.8 °C11 February 1945	17.4 °C	1,203 mm	58	14
1944	35.5 °C20 August 1944	-2.7 °C21 December 1944	18.0 °C	1,005 mm	90	9
1943	32.4 °C29 June 1943	-0.9 °C8 February 1943	18.2 °C	1,817 mm	49	2
1942	33.4 °C8 August 1942	0.1 °C8 January 1942	18.6 °C	1,247 mm	72	0
1941	34.8 °C11 July 1941	0.9 °C29 January 1941	18.3 °C	1,231 mm	61	0
1940	35.1 °C19 August 1940	-3.0 °C23 January 1940	18.1 °C	1,060 mm	77	4

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

23.7 °C

+1.8 °C

Hot days (≥ 30 °C)

111 d/yr

+35

Frost days (< 0 °C)

0 d/yr

-1

Annual rainfall

1424 mm

+196 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	12.5 °C	+1.7 °C	57 mm	+23 mm
Feb	12.8 °C	-0.1 °C	34 mm	-2 mm
Mar	17.6 °C	-0.3 °C	73 mm	+6 mm
Apr	26.1 °C	+3.1 °C	72 mm	-32 mm
May	29.0 °C	+2.6 °C	62 mm	-77 mm
Jun	31.4 °C	+2.6 °C	157 mm	+10 mm
Jul	35.6 °C	+3.5 °C	185 mm	+1 mm
Aug	35.8 °C	+3.2 °C	265 mm	+107 mm
Sep	28.6 °C	+1.0 °C	289 mm	+150 mm
Oct	23.8 °C	+2.0 °C	160 mm	+54 mm
Nov	17.2 °C	+0.2 °C	43 mm	-27 mm
Dec	13.7 °C	+1.7 °C	28 mm	-16 mm

The year's extremes

Hottest day

43.0 °C

5 Aug 2025

Coldest day

1.0 °C

27 Jan 2025

Wettest day

137.7 mm

11 Aug 2025

Windiest day

38.1 km/h

27 Mar 2025

Strongest gust

67.3 km/h

14 Jun 2025

Hottest feels-like

47.7 °C

17 Jul 2025

Coldest feels-like

-2.1 °C

27 Jan 2025

Sunniest day

13.9 h

27 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 Gulou?

Gulou has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 18.5 °C and it receives 1,228 mm of precipitation per year.

What is the hottest day ever recorded in Gulou?

The hottest day measured in Gulou between 1940 and 2025 was 17 August 2011, reaching 44.3 °C.

What is the coldest day in Gulou?

The coldest day measured in Gulou between 1940 and 2025 was 9 January 1956, at -7.2 °C.

Does it snow in Gulou?

Yes. Gulou gets on average 1.8 cm of snow per year and has around 1 frost days.

Has the climate of Gulou warmed?

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

What is the wettest day in Gulou?

The wettest day measured in Gulou between 1940 and 2025 was 20 July 1987, with 146 mm of rain in 24 hours.

What was the windiest day in Gulou?

The windiest day measured in Gulou between 1940 and 2025 was 24 May 1946, with winds reaching 70.1 km/h.

What is the warmest month in Gulou?

The warmest month in Gulou is August (28.6 °C on average); the coldest is January (8.0 °C).

How much does it rain in Gulou?

Gulou receives on average 1,228 mm of precipitation per year, spread over about 156 rainy days.

Is it sunny in Gulou?

Gulou gets on average 6.2 hours of sunshine per day, roughly 2,263 hours per year over 1940-2025.

What is the biggest single-day snowfall in Gulou?

The heaviest 24-hour snowfall measured in Gulou between 1940 and 2025 was 7 January 1956, with 7.5 cm.

Are there tropical nights in Gulou?

Yes: Gulou has on average 122 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Gulou?

In Gulou, between 1940 and 2025, the highest apparent temperature reached 47.7 °C on 17 July 2025, and the lowest was -11.1 °C on 11 January 1956.

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