Rugao climate — normals and trends

Q: What is the climate of Rugao?

Rugao has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 15.5 °C and it receives 1,285 mm of precipitation per year.

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

The hottest day measured in Rugao between 1940 and 2025 was 5 August 1946, reaching 40.8 °C.

Q: What is the coldest day in Rugao?

The coldest day measured in Rugao between 1940 and 2025 was 17 January 1945, at -15.7 °C.

Q: Does it snow in Rugao?

Yes. Rugao gets on average 9.4 cm of snow per year and has around 50 frost days.

Q: Has the climate of Rugao warmed?

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

Q: What is the wettest day in Rugao?

The wettest day measured in Rugao between 1940 and 2025 was 4 August 1960, with 208 mm of rain in 24 hours.

Q: What was the windiest day in Rugao?

The windiest day measured in Rugao between 1940 and 2025 was 22 August 1951, with winds reaching 52.3 km/h.

Q: What is the warmest month in Rugao?

The warmest month in Rugao is July (27.8 °C on average); the coldest is January (2.7 °C).

Q: How much does it rain in Rugao?

Rugao receives on average 1,285 mm of precipitation per year, spread over about 118 rainy days.

Q: Is it sunny in Rugao?

Rugao gets on average 7.9 hours of sunshine per day, roughly 2,884 hours per year over 1940-2025.

Rugao (China) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 15.5 °C and it receives 1,285 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 (2.7 °C). Rainfall peaks in July.

Rugao averages 50 frost days, 58 hot days (≥ 30 °C) and 118 rainy days per year.

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

The number of frost days there went from about 61 to 39 per year over the period.

The hottest day of the period reached 40.8 °C (on 5 August 1946) and the coldest -15.7 °C (on 17 January 1945).

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

RugaoJiangsu

coords: 32.37°, 120.58°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthJulyColdest monthJanuaryWettest monthJulyDriest monthDecember

Mean daily temperature

15.5°C

Average daily high

19.7°C

Average daily low

11.7°C

Annual rainfall

1,285mm

Sunshine / day

7.9h

Mean relative humidity

76%

Average peak wind

15.5km/h

Seasonal range

25.1°C

Frost days (< 0 °C)

50 d/yr

Hot days (≥ 30 °C)

58 d/yr

Rainy days (≥ 1 mm)

118 d/yr

Annual snowfall

9.4 cm

Average feels-like high

19.9 °C

Average feels-like low

11.0 °C

Average peak gust

32.2 km/h

Tropical nights (≥ 20 °C)

94 d/yr

Solar radiation

14.4 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.5 °C

since 1940

+0.2 °C per decade · r² = 0.35 · 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

40.8 °C

5 August 1946

Coldest day

-15.7 °C

17 January 1945

Wettest day

208 mm

4 August 1960

Windiest day

52.3 km/h

22 August 1951

Strongest gust

102.6 km/h

22 August 1951

Hottest feels-like

47.8 °C

1 August 2003

Coldest feels-like

-21.0 °C

17 January 1945

Snowiest day

19.0 cm

18 January 1984

Sunniest day

14.0 h

19 June 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	37.5 °C6 July 2025	-7.8 °C9 February 2025	17.7 °C	1,233 mm	96	43
2024	38.4 °C10 August 2024	-6.6 °C23 January 2024	17.1 °C	1,300 mm	92	46
2023	36.2 °C12 August 2023	-8.2 °C25 January 2023	16.7 °C	1,481 mm	79	35
2022	39.7 °C14 August 2022	-4.9 °C14 January 2022	16.9 °C	1,004 mm	83	42
2021	37.1 °C14 July 2021	-8.6 °C7 January 2021	17.0 °C	1,156 mm	82	31
2020	36.5 °C15 August 2020	-8.1 °C31 December 2020	16.6 °C	1,397 mm	57	28
2019	36.5 °C30 July 2019	-3.6 °C17 January 2019	16.6 °C	814 mm	64	33
2018	37.4 °C26 June 2018	-9.2 °C30 January 2018	16.7 °C	1,175 mm	80	42
2017	39.2 °C24 July 2017	-5.0 °C21 January 2017	16.7 °C	1,104 mm	67	33
2016	37.6 °C24 July 2016	-9.9 °C24 January 2016	16.5 °C	1,793 mm	66	41
2015	36.8 °C3 August 2015	-5.5 °C2 January 2015	16.0 °C	1,676 mm	36	33
2014	36.4 °C30 May 2014	-5.3 °C22 January 2014	16.1 °C	1,155 mm	39	43
2013	39.6 °C10 August 2013	-4.6 °C29 December 2013	16.7 °C	873 mm	92	55
2012	37.3 °C5 July 2012	-6.2 °C24 December 2012	15.9 °C	999 mm	66	47
2011	37.7 °C9 June 2011	-6.8 °C16 January 2011	15.9 °C	982 mm	69	61
2010	37.9 °C12 August 2010	-6.6 °C14 January 2010	16.1 °C	998 mm	74	46
2009	35.9 °C17 July 2009	-7.7 °C24 January 2009	16.3 °C	1,393 mm	64	37
2008	36.9 °C6 July 2008	-7.6 °C22 December 2008	16.0 °C	1,122 mm	64	57
2007	36.8 °C28 July 2007	-4.5 °C2 February 2007	16.9 °C	1,034 mm	71	28
2006	36.8 °C21 June 2006	-5.2 °C8 January 2006	16.7 °C	1,095 mm	79	33
2005	38.1 °C3 July 2005	-6.3 °C1 January 2005	16.2 °C	960 mm	82	62
2004	36.8 °C24 July 2004	-6.8 °C22 January 2004	16.5 °C	1,146 mm	66	31
2003	37.9 °C2 August 2003	-6.7 °C5 January 2003	15.8 °C	1,271 mm	55	42
2002	37.5 °C15 July 2002	-5.3 °C28 December 2002	16.4 °C	1,415 mm	64	35
2001	36.9 °C2 July 2001	-5.9 °C15 January 2001	16.1 °C	1,136 mm	48	34
2000	35.5 °C21 July 2000	-6.8 °C26 January 2000	16.0 °C	1,289 mm	69	34
1999	34.5 °C10 September 1999	-6.8 °C22 December 1999	15.6 °C	1,616 mm	32	39
1998	36.8 °C10 August 1998	-7.2 °C19 January 1998	16.5 °C	1,528 mm	58	28
1997	36.5 °C5 June 1997	-5.5 °C25 January 1997	15.9 °C	997 mm	66	47
1996	35.0 °C23 July 1996	-6.0 °C10 February 1996	15.2 °C	1,433 mm	47	53
1995	36.0 °C13 August 1995	-5.3 °C5 February 1995	15.4 °C	928 mm	59	52
1994	36.4 °C2 July 1994	-4.2 °C19 January 1994	16.4 °C	892 mm	76	28
1993	35.1 °C12 July 1993	-8.2 °C17 January 1993	14.8 °C	1,660 mm	36	59
1992	36.5 °C29 July 1992	-4.6 °C15 January 1992	15.1 °C	1,079 mm	46	54
1991	34.8 °C23 July 1991	-9.4 °C30 December 1991	14.9 °C	1,834 mm	43	39
1990	36.5 °C24 July 1990	-8.9 °C1 February 1990	15.9 °C	1,484 mm	72	43
1989	35.8 °C12 August 1989	-5.3 °C15 January 1989	15.1 °C	1,475 mm	31	34
1988	37.4 °C8 July 1988	-5.7 °C24 January 1988	14.9 °C	1,070 mm	44	55
1987	34.5 °C4 August 1987	-7.4 °C14 January 1987	14.9 °C	1,834 mm	43	51
1986	35.7 °C12 August 1986	-8.7 °C5 January 1986	14.7 °C	1,264 mm	49	58
1985	35.4 °C16 July 1985	-6.7 °C9 December 1985	14.9 °C	1,448 mm	61	49
1984	35.3 °C26 July 1984	-10.9 °C23 January 1984	14.6 °C	1,295 mm	51	66
1983	37.2 °C3 August 1983	-8.0 °C19 February 1983	15.1 °C	1,386 mm	42	58
1982	34.1 °C8 July 1982	-7.6 °C19 January 1982	15.1 °C	1,203 mm	40	50
1981	34.6 °C21 June 1981	-7.7 °C3 January 1981	14.7 °C	1,304 mm	53	65
1980	35.5 °C27 July 1980	-10.5 °C5 February 1980	14.1 °C	1,313 mm	28	70
1979	35.7 °C6 August 1979	-8.7 °C19 November 1979	15.4 °C	973 mm	53	46
1978	38.3 °C8 July 1978	-8.3 °C19 January 1978	15.5 °C	715 mm	79	60
1977	36.1 °C6 August 1977	-9.4 °C5 January 1977	15.0 °C	1,690 mm	37	55
1976	35.9 °C5 August 1976	-8.2 °C29 December 1976	14.4 °C	1,131 mm	41	62
1975	35.1 °C19 July 1975	-5.1 °C17 December 1975	15.3 °C	1,496 mm	55	61
1974	34.5 °C5 August 1974	-6.0 °C25 February 1974	14.9 °C	1,310 mm	39	56
1973	34.6 °C5 August 1973	-9.7 °C26 December 1973	15.2 °C	1,090 mm	55	48
1972	34.8 °C7 July 1972	-6.7 °C10 February 1972	14.4 °C	1,392 mm	40	66
1971	36.1 °C15 July 1971	-7.3 °C5 January 1971	15.0 °C	1,081 mm	65	64
1970	34.6 °C24 July 1970	-9.8 °C5 January 1970	14.6 °C	1,561 mm	41	59
1969	35.2 °C17 August 1969	-14.3 °C6 February 1969	14.4 °C	1,186 mm	51	80
1968	33.4 °C30 July 1968	-7.1 °C16 January 1968	14.9 °C	1,152 mm	47	71
1967	36.6 °C27 August 1967	-10.6 °C30 December 1967	14.9 °C	1,099 mm	75	85
1966	38.1 °C7 August 1966	-9.1 °C27 December 1966	15.7 °C	1,147 mm	56	43
1965	34.1 °C20 July 1965	-7.2 °C17 December 1965	14.9 °C	1,197 mm	47	59
1964	37.2 °C16 July 1964	-6.1 °C21 February 1964	15.6 °C	1,244 mm	72	49
1963	35.0 °C28 July 1963	-8.8 °C4 February 1963	14.8 °C	1,360 mm	52	69
1962	36.7 °C19 July 1962	-5.6 °C2 January 1962	15.0 °C	1,487 mm	47	65
1961	35.4 °C23 July 1961	-5.9 °C12 January 1961	15.9 °C	1,311 mm	70	42
1960	36.0 °C14 July 1960	-7.0 °C19 December 1960	15.4 °C	1,556 mm	48	55
1959	38.0 °C21 August 1959	-9.1 °C5 January 1959	15.5 °C	1,117 mm	62	49
1958	35.7 °C22 July 1958	-11.7 °C16 January 1958	14.9 °C	1,164 mm	61	51
1957	35.5 °C22 July 1957	-13.0 °C12 February 1957	14.5 °C	1,856 mm	41	53
1956	36.6 °C12 July 1956	-8.3 °C24 January 1956	14.8 °C	1,829 mm	65	71
1955	35.3 °C12 September 1955	-10.6 °C16 January 1955	15.5 °C	1,149 mm	68	45
1954	36.1 °C12 August 1954	-10.3 °C28 January 1954	15.2 °C	1,924 mm	47	53
1953	36.6 °C28 July 1953	-8.9 °C18 January 1953	16.0 °C	1,395 mm	67	41
1952	34.1 °C2 August 1952	-7.3 °C19 February 1952	15.3 °C	1,783 mm	52	42
1951	36.7 °C8 August 1951	-9.4 °C13 January 1951	15.2 °C	1,740 mm	48	47
1950	35.0 °C13 July 1950	-6.5 °C5 February 1950	15.5 °C	1,575 mm	41	51
1949	34.0 °C21 July 1949	-6.5 °C9 January 1949	15.7 °C	1,706 mm	42	44
1948	33.3 °C28 July 1948	-8.7 °C26 January 1948	16.1 °C	1,280 mm	58	39
1947	34.1 °C29 July 1947	-6.9 °C19 December 1947	15.3 °C	1,114 mm	61	57
1946	40.8 °C5 August 1946	-6.4 °C29 December 1946	16.8 °C	778 mm	110	59
1945	35.7 °C9 June 1945	-15.7 °C17 January 1945	15.2 °C	1,079 mm	71	77
1944	35.5 °C13 July 1944	-6.6 °C20 December 1944	15.6 °C	879 mm	80	75
1943	33.5 °C3 August 1943	-7.8 °C12 January 1943	15.0 °C	1,619 mm	18	63
1942	35.5 °C7 August 1942	-6.6 °C17 January 1942	15.3 °C	1,253 mm	57	60
1941	35.0 °C12 June 1941	-7.7 °C25 January 1941	15.6 °C	1,044 mm	47	49
1940	33.8 °C14 August 1940	-7.3 °C26 January 1940	15.4 °C	982 mm	63	60

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

22.3 °C

+2.6 °C

Hot days (≥ 30 °C)

96 d/yr

+38

Frost days (< 0 °C)

43 d/yr

-7

Annual rainfall

1233 mm

-52 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	10.2 °C	+3.4 °C	7 mm	-34 mm
Feb	9.6 °C	+1.1 °C	10 mm	-43 mm
Mar	17.0 °C	+3.8 °C	38 mm	-41 mm
Apr	25.0 °C	+5.6 °C	34 mm	-62 mm
May	26.4 °C	+2.0 °C	135 mm	+11 mm
Jun	28.7 °C	+0.9 °C	289 mm	+61 mm
Jul	33.1 °C	+1.8 °C	210 mm	-30 mm
Aug	33.5 °C	+2.4 °C	212 mm	+58 mm
Sep	29.6 °C	+2.8 °C	229 mm	+99 mm
Oct	23.8 °C	+2.0 °C	54 mm	-2 mm
Nov	17.4 °C	+1.4 °C	10 mm	-40 mm
Dec	12.4 °C	+2.8 °C	5 mm	-28 mm

The year's extremes

Hottest day

37.5 °C

6 Jul 2025

Coldest day

-7.8 °C

9 Feb 2025

Wettest day

110.6 mm

30 Jul 2025

Windiest day

39.7 km/h

30 Jul 2025

Strongest gust

81.0 km/h

8 May 2025

Hottest feels-like

45.2 °C

6 Jul 2025

Coldest feels-like

-12.7 °C

8 Feb 2025

Sunniest day

14.0 h

17 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 Rugao?

Rugao has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 15.5 °C and it receives 1,285 mm of precipitation per year.

What is the hottest day ever recorded in Rugao?

The hottest day measured in Rugao between 1940 and 2025 was 5 August 1946, reaching 40.8 °C.

What is the coldest day in Rugao?

The coldest day measured in Rugao between 1940 and 2025 was 17 January 1945, at -15.7 °C.

Does it snow in Rugao?

Yes. Rugao gets on average 9.4 cm of snow per year and has around 50 frost days.

Has the climate of Rugao warmed?

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

What is the wettest day in Rugao?

The wettest day measured in Rugao between 1940 and 2025 was 4 August 1960, with 208 mm of rain in 24 hours.

What was the windiest day in Rugao?

The windiest day measured in Rugao between 1940 and 2025 was 22 August 1951, with winds reaching 52.3 km/h.

What is the warmest month in Rugao?

The warmest month in Rugao is July (27.8 °C on average); the coldest is January (2.7 °C).

How much does it rain in Rugao?

Rugao receives on average 1,285 mm of precipitation per year, spread over about 118 rainy days.

Is it sunny in Rugao?

Rugao gets on average 7.9 hours of sunshine per day, roughly 2,884 hours per year over 1940-2025.

What is the biggest single-day snowfall in Rugao?

The heaviest 24-hour snowfall measured in Rugao between 1940 and 2025 was 18 January 1984, with 19.0 cm.

Are there tropical nights in Rugao?

Yes: Rugao has on average 94 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Rugao?

In Rugao, between 1940 and 2025, the highest apparent temperature reached 47.8 °C on 1 August 2003, and the lowest was -21.0 °C on 17 January 1945.

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