Gaoyou climate — normals and trends

Q: What is the climate of Gaoyou?

Gaoyou has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 15.6 °C and it receives 1,187 mm of precipitation per year.

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

The hottest day measured in Gaoyou between 1940 and 2025 was 11 August 1946, reaching 39.4 °C.

Q: What is the coldest day in Gaoyou?

The coldest day measured in Gaoyou between 1940 and 2025 was 17 January 1955, at -15.1 °C.

Q: Does it snow in Gaoyou?

Yes. Gaoyou gets on average 11.6 cm of snow per year and has around 40 frost days.

Q: Has the climate of Gaoyou warmed?

Yes: Gaoyou warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Gaoyou?

The wettest day measured in Gaoyou between 1940 and 2025 was 28 July 1954, with 179 mm of rain in 24 hours.

Q: What was the windiest day in Gaoyou?

The windiest day measured in Gaoyou between 1940 and 2025 was 2 August 1956, with winds reaching 45.1 km/h.

Q: What is the warmest month in Gaoyou?

The warmest month in Gaoyou is July (27.9 °C on average); the coldest is January (2.4 °C).

Q: How much does it rain in Gaoyou?

Gaoyou receives on average 1,187 mm of precipitation per year, spread over about 108 rainy days.

Q: Is it sunny in Gaoyou?

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

Gaoyou (China) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 15.6 °C and it receives 1,187 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 (27.9 °C on average) and the coldest is January (2.4 °C). Rainfall peaks in July.

Gaoyou averages 40 frost days, 51 hot days (≥ 30 °C) and 108 rainy days per year.

Gaoyou has warmed by +1.4 °C between 1940 and 2025, or +0.16 °C per decade. This trend is statistically significant.

The number of frost days there went from about 50 to 30 per year over the period.

The hottest day of the period reached 39.4 °C (on 11 August 1946) and the coldest -15.1 °C (on 17 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

GaoyouJiangsu

coords: 32.79°, 119.44°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthJulyColdest monthJanuaryWettest monthJulyDriest monthDecember

Mean daily temperature

15.6°C

Average daily high

19.0°C

Average daily low

12.5°C

Annual rainfall

1,187mm

Sunshine / day

8.0h

Mean relative humidity

76%

Average peak wind

16.3km/h

Seasonal range

25.5°C

Frost days (< 0 °C)

40 d/yr

Hot days (≥ 30 °C)

51 d/yr

Rainy days (≥ 1 mm)

108 d/yr

Annual snowfall

11.6 cm

Average feels-like high

19.1 °C

Average feels-like low

11.7 °C

Average peak gust

29.9 km/h

Tropical nights (≥ 20 °C)

103 d/yr

Solar radiation

14.5 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.4 °C

since 1940

+0.2 °C per decade · r² = 0.33 · 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

39.4 °C

11 August 1946

Coldest day

-15.1 °C

17 January 1955

Wettest day

179 mm

28 July 1954

Windiest day

45.1 km/h

2 August 1956

Strongest gust

91.1 km/h

7 August 2005

Hottest feels-like

48.0 °C

1 August 2003

Coldest feels-like

-20.4 °C

16 January 1955

Snowiest day

18.2 cm

4 March 1952

Sunniest day

14.0 h

29 May 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	38.0 °C5 July 2025	-6.0 °C8 February 2025	17.6 °C	1,239 mm	79	27
2024	38.4 °C4 August 2024	-6.2 °C23 January 2024	17.0 °C	1,112 mm	83	37
2023	35.9 °C12 August 2023	-7.9 °C25 January 2023	16.7 °C	1,185 mm	70	30
2022	37.9 °C13 August 2022	-3.5 °C23 December 2022	16.9 °C	823 mm	77	32
2021	35.8 °C14 July 2021	-8.1 °C7 January 2021	17.0 °C	1,053 mm	68	23
2020	36.5 °C16 August 2020	-7.0 °C30 December 2020	16.7 °C	1,201 mm	51	16
2019	36.7 °C30 July 2019	-3.6 °C31 December 2019	16.7 °C	666 mm	56	16
2018	34.9 °C5 August 2018	-5.1 °C12 January 2018	16.6 °C	1,199 mm	69	37
2017	38.0 °C23 July 2017	-3.1 °C21 January 2017	16.8 °C	1,175 mm	62	14
2016	37.3 °C24 July 2016	-9.8 °C24 January 2016	16.4 °C	1,831 mm	55	34
2015	35.5 °C5 August 2015	-3.7 °C9 February 2015	16.1 °C	1,290 mm	26	21
2014	36.9 °C30 May 2014	-4.2 °C10 February 2014	16.2 °C	1,115 mm	33	26
2013	37.8 °C9 August 2013	-5.5 °C3 January 2013	16.5 °C	788 mm	72	38
2012	36.3 °C29 July 2012	-5.0 °C24 December 2012	15.9 °C	993 mm	59	39
2011	36.0 °C30 July 2011	-7.8 °C16 January 2011	15.7 °C	1,181 mm	53	56
2010	36.8 °C12 August 2010	-5.5 °C5 January 2010	15.9 °C	1,033 mm	67	39
2009	35.1 °C25 June 2009	-6.8 °C24 January 2009	16.2 °C	1,072 mm	59	30
2008	34.9 °C5 July 2008	-8.0 °C22 December 2008	16.0 °C	1,040 mm	50	50
2007	35.7 °C28 July 2007	-1.9 °C1 February 2007	16.9 °C	924 mm	59	18
2006	35.9 °C20 June 2006	-4.2 °C4 February 2006	16.6 °C	1,065 mm	64	26
2005	37.1 °C23 June 2005	-6.2 °C1 January 2005	16.1 °C	1,072 mm	69	58
2004	36.9 °C21 July 2004	-6.2 °C22 January 2004	16.8 °C	674 mm	65	26
2003	38.0 °C1 August 2003	-6.6 °C5 January 2003	15.7 °C	1,535 mm	48	41
2002	37.1 °C15 July 2002	-5.2 °C26 December 2002	16.6 °C	1,067 mm	59	20
2001	37.2 °C2 July 2001	-6.2 °C15 January 2001	16.3 °C	797 mm	50	26
2000	34.7 °C22 July 2000	-6.6 °C26 January 2000	16.1 °C	1,167 mm	65	28
1999	34.0 °C8 September 1999	-6.7 °C22 December 1999	15.8 °C	1,132 mm	34	25
1998	35.8 °C10 July 1998	-7.3 °C19 January 1998	16.6 °C	1,320 mm	55	25
1997	34.5 °C28 July 1997	-5.1 °C6 January 1997	16.1 °C	1,027 mm	53	37
1996	35.6 °C23 July 1996	-5.8 °C18 February 1996	15.3 °C	1,526 mm	43	39
1995	35.9 °C13 August 1995	-3.6 °C5 February 1995	15.7 °C	838 mm	56	33
1994	36.5 °C5 July 1994	-3.8 °C21 January 1994	16.5 °C	855 mm	70	25
1993	33.6 °C12 July 1993	-6.7 °C16 January 1993	15.1 °C	1,335 mm	28	40
1992	36.3 °C27 July 1992	-3.9 °C1 February 1992	15.2 °C	992 mm	42	40
1991	35.8 °C23 July 1991	-7.7 °C28 December 1991	15.0 °C	1,901 mm	33	35
1990	35.9 °C9 July 1990	-8.2 °C1 February 1990	15.9 °C	1,217 mm	69	40
1989	34.3 °C19 July 1989	-4.4 °C15 January 1989	15.2 °C	1,215 mm	22	22
1988	37.3 °C9 July 1988	-4.9 °C24 January 1988	15.1 °C	911 mm	44	45
1987	33.8 °C4 August 1987	-6.5 °C13 January 1987	15.0 °C	1,756 mm	37	45
1986	34.9 °C29 July 1986	-7.4 °C5 January 1986	14.9 °C	1,113 mm	36	55
1985	35.4 °C7 August 1985	-6.1 °C9 December 1985	15.0 °C	1,231 mm	51	52
1984	34.5 °C16 July 1984	-9.2 °C23 January 1984	14.7 °C	1,291 mm	44	61
1983	35.9 °C3 August 1983	-5.8 °C19 February 1983	15.4 °C	1,279 mm	41	41
1982	33.4 °C8 July 1982	-6.0 °C16 January 1982	15.3 °C	1,203 mm	31	41
1981	34.8 °C21 June 1981	-6.6 °C3 January 1981	15.0 °C	1,217 mm	49	55
1980	35.3 °C27 July 1980	-9.9 °C30 January 1980	14.5 °C	1,288 mm	23	50
1979	35.6 °C4 August 1979	-7.8 °C16 January 1979	15.5 °C	1,171 mm	46	36
1978	38.3 °C8 July 1978	-5.3 °C10 January 1978	15.9 °C	564 mm	83	46
1977	34.9 °C7 August 1977	-10.1 °C31 January 1977	15.1 °C	1,438 mm	36	50
1976	35.5 °C8 August 1976	-7.4 °C26 December 1976	14.7 °C	911 mm	38	39
1975	34.1 °C19 July 1975	-3.2 °C22 February 1975	15.5 °C	1,359 mm	51	41
1974	34.4 °C6 August 1974	-4.3 °C12 January 1974	15.0 °C	1,238 mm	35	53
1973	34.3 °C5 August 1973	-7.1 °C24 December 1973	15.5 °C	832 mm	53	30
1972	35.0 °C8 July 1972	-5.3 °C27 January 1972	14.6 °C	1,391 mm	35	50
1971	36.1 °C16 July 1971	-6.5 °C5 February 1971	15.1 °C	1,095 mm	51	56
1970	34.4 °C7 August 1970	-9.7 °C5 January 1970	14.7 °C	1,411 mm	33	44
1969	36.2 °C25 July 1969	-11.4 °C6 February 1969	14.4 °C	1,256 mm	46	70
1968	33.5 °C1 August 1968	-6.0 °C15 January 1968	15.0 °C	1,081 mm	38	63
1967	36.5 °C27 August 1967	-8.9 °C16 January 1967	15.0 °C	1,116 mm	75	79
1966	37.5 °C7 August 1966	-8.3 °C27 December 1966	15.9 °C	1,014 mm	56	33
1965	33.2 °C19 July 1965	-6.4 °C17 December 1965	15.1 °C	1,138 mm	43	42
1964	36.9 °C15 July 1964	-7.3 °C17 February 1964	15.5 °C	1,271 mm	62	40
1963	34.3 °C14 July 1963	-8.1 °C4 February 1963	14.9 °C	1,276 mm	40	52
1962	35.6 °C19 July 1962	-5.1 °C31 January 1962	15.3 °C	1,430 mm	37	37
1961	36.0 °C24 July 1961	-6.0 °C11 January 1961	16.1 °C	1,268 mm	57	31
1960	35.1 °C14 July 1960	-6.3 °C18 December 1960	15.5 °C	1,256 mm	44	35
1959	37.7 °C23 August 1959	-8.2 °C5 January 1959	15.6 °C	984 mm	61	39
1958	36.0 °C22 July 1958	-10.6 °C16 January 1958	15.0 °C	1,080 mm	58	41
1957	34.6 °C22 July 1957	-13.3 °C13 February 1957	14.5 °C	1,255 mm	37	53
1956	35.7 °C22 July 1956	-9.7 °C27 January 1956	14.7 °C	1,700 mm	48	64
1955	33.4 °C11 September 1955	-15.1 °C17 January 1955	15.2 °C	1,152 mm	55	39
1954	35.8 °C13 August 1954	-11.3 °C27 January 1954	14.9 °C	2,465 mm	35	47
1953	36.9 °C28 July 1953	-8.7 °C18 January 1953	15.8 °C	1,582 mm	61	37
1952	32.9 °C30 June 1952	-6.8 °C19 February 1952	15.1 °C	1,505 mm	39	41
1951	35.9 °C8 August 1951	-10.4 °C13 January 1951	15.2 °C	1,907 mm	45	43
1950	34.8 °C14 July 1950	-4.0 °C23 January 1950	15.6 °C	1,389 mm	37	32
1949	33.8 °C22 July 1949	-5.0 °C6 January 1949	15.8 °C	1,404 mm	37	34
1948	33.8 °C2 July 1948	-8.3 °C26 January 1948	16.0 °C	1,325 mm	46	33
1947	33.3 °C20 August 1947	-6.1 °C19 December 1947	15.4 °C	1,182 mm	51	41
1946	39.4 °C11 August 1946	-5.0 °C10 January 1946	16.9 °C	777 mm	102	38
1945	35.6 °C10 June 1945	-14.1 °C17 January 1945	15.2 °C	938 mm	59	61
1944	35.4 °C11 July 1944	-6.2 °C16 December 1944	15.9 °C	847 mm	73	61
1943	32.6 °C3 August 1943	-6.6 °C11 January 1943	15.3 °C	1,369 mm	12	47
1942	35.5 °C7 August 1942	-5.8 °C17 January 1942	15.7 °C	1,130 mm	51	48
1941	34.0 °C6 July 1941	-8.0 °C24 January 1941	16.0 °C	942 mm	40	39
1940	34.1 °C14 August 1940	-6.3 °C26 January 1940	15.8 °C	713 mm	62	40

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

21.3 °C

+2.3 °C

Hot days (≥ 30 °C)

79 d/yr

+28

Frost days (< 0 °C)

27 d/yr

-13

Annual rainfall

1239 mm

+52 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	8.7 °C	+3.0 °C	5 mm	-30 mm
Feb	8.4 °C	+0.9 °C	11 mm	-36 mm
Mar	15.4 °C	+3.0 °C	41 mm	-30 mm
Apr	23.5 °C	+4.7 °C	28 mm	-58 mm
May	25.6 °C	+1.5 °C	114 mm	-0 mm
Jun	28.5 °C	+0.6 °C	265 mm	+77 mm
Jul	33.2 °C	+2.4 °C	142 mm	-103 mm
Aug	32.9 °C	+2.3 °C	268 mm	+118 mm
Sep	28.2 °C	+2.0 °C	276 mm	+159 mm
Oct	22.6 °C	+1.5 °C	69 mm	+13 mm
Nov	16.9 °C	+1.9 °C	16 mm	-32 mm
Dec	11.2 °C	+2.8 °C	4 mm	-25 mm

The year's extremes

Hottest day

38.0 °C

5 Jul 2025

Coldest day

-6.0 °C

8 Feb 2025

Wettest day

94.7 mm

24 Sep 2025

Windiest day

39.8 km/h

12 Apr 2025

Strongest gust

70.6 km/h

12 Apr 2025

Hottest feels-like

45.9 °C

6 Jul 2025

Coldest feels-like

-11.7 °C

8 Feb 2025

Sunniest day

14.0 h

29 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 Gaoyou?

Gaoyou has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 15.6 °C and it receives 1,187 mm of precipitation per year.

What is the hottest day ever recorded in Gaoyou?

The hottest day measured in Gaoyou between 1940 and 2025 was 11 August 1946, reaching 39.4 °C.

What is the coldest day in Gaoyou?

The coldest day measured in Gaoyou between 1940 and 2025 was 17 January 1955, at -15.1 °C.

Does it snow in Gaoyou?

Yes. Gaoyou gets on average 11.6 cm of snow per year and has around 40 frost days.

Has the climate of Gaoyou warmed?

Yes: Gaoyou warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Gaoyou?

The wettest day measured in Gaoyou between 1940 and 2025 was 28 July 1954, with 179 mm of rain in 24 hours.

What was the windiest day in Gaoyou?

The windiest day measured in Gaoyou between 1940 and 2025 was 2 August 1956, with winds reaching 45.1 km/h.

What is the warmest month in Gaoyou?

The warmest month in Gaoyou is July (27.9 °C on average); the coldest is January (2.4 °C).

How much does it rain in Gaoyou?

Gaoyou receives on average 1,187 mm of precipitation per year, spread over about 108 rainy days.

Is it sunny in Gaoyou?

Gaoyou 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 Gaoyou?

The heaviest 24-hour snowfall measured in Gaoyou between 1940 and 2025 was 4 March 1952, with 18.2 cm.

Are there tropical nights in Gaoyou?

Yes: Gaoyou has on average 103 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Gaoyou?

In Gaoyou, between 1940 and 2025, the highest apparent temperature reached 48.0 °C on 1 August 2003, and the lowest was -20.4 °C on 16 January 1955.

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