Ronglong climate — normals and trends

Q: What is the climate of Ronglong?

Ronglong has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 18.0 °C and it receives 1,249 mm of precipitation per year.

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

The hottest day measured in Ronglong between 1940 and 2025 was 20 August 2022, reaching 42.8 °C.

Q: What is the coldest day in Ronglong?

The coldest day measured in Ronglong between 1940 and 2025 was 14 December 1975, at -5.2 °C.

Q: Does it snow in Ronglong?

Yes. Ronglong gets on average 1.7 cm of snow per year and has around 1 frost days.

Q: Has the climate of Ronglong warmed?

Yes: Ronglong warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Ronglong?

The wettest day measured in Ronglong between 1940 and 2025 was 30 August 1970, with 125 mm of rain in 24 hours.

Q: What was the windiest day in Ronglong?

The windiest day measured in Ronglong between 1940 and 2025 was 13 May 1946, with winds reaching 63.8 km/h.

Q: What is the warmest month in Ronglong?

The warmest month in Ronglong is July (27.5 °C on average); the coldest is January (7.7 °C).

Q: How much does it rain in Ronglong?

Ronglong receives on average 1,249 mm of precipitation per year, spread over about 168 rainy days.

Q: Is it sunny in Ronglong?

Ronglong gets on average 6.4 hours of sunshine per day, roughly 2,336 hours per year over 1940-2025.

Ronglong (China) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 18.0 °C and it receives 1,249 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 (27.5 °C on average) and the coldest is January (7.7 °C). Rainfall peaks in July.

Ronglong averages 1 frost days, 66 hot days (≥ 30 °C) and 168 rainy days per year.

Ronglong has warmed by +1.1 °C between 1940 and 2025, or +0.13 °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 42.8 °C (on 20 August 2022) and the coldest -5.2 °C (on 14 December 1975).

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

RonglongChongqing Municipality

coords: 29.44°, 105.45°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthJulyColdest monthJanuaryWettest monthJulyDriest monthJanuary

Mean daily temperature

18.0°C

Average daily high

21.3°C

Average daily low

15.2°C

Annual rainfall

1,249mm

Sunshine / day

6.4h

Mean relative humidity

78%

Average peak wind

11.1km/h

Seasonal range

19.8°C

Frost days (< 0 °C)

1 d/yr

Hot days (≥ 30 °C)

66 d/yr

Rainy days (≥ 1 mm)

168 d/yr

Annual snowfall

1.7 cm

Average feels-like high

22.5 °C

Average feels-like low

15.6 °C

Average peak gust

22.8 km/h

Tropical nights (≥ 20 °C)

115 d/yr

Solar radiation

11.8 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.1 °C

since 1940

+0.1 °C per decade · r² = 0.30 · 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

42.8 °C

20 August 2022

Coldest day

-5.2 °C

14 December 1975

Wettest day

125 mm

30 August 1970

Windiest day

63.8 km/h

13 May 1946

Strongest gust

79.6 km/h

7 June 1946

Hottest feels-like

46.9 °C

16 July 2025

Coldest feels-like

-10.0 °C

14 December 1975

Snowiest day

6.0 cm

5 January 1970

Sunniest day

13.9 h

18 June 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	40.6 °C3 August 2025	2.3 °C12 January 2025	19.4 °C	1,386 mm	105	0
2024	40.5 °C4 September 2024	2.0 °C16 December 2024	19.7 °C	1,167 mm	95	0
2023	37.5 °C23 July 2023	-0.6 °C19 January 2023	19.1 °C	1,298 mm	87	1
2022	42.8 °C20 August 2022	2.2 °C23 February 2022	19.5 °C	899 mm	90	0
2021	39.8 °C3 August 2021	-0.7 °C12 January 2021	18.5 °C	1,082 mm	72	3
2020	37.2 °C10 August 2020	1.1 °C21 December 2020	18.4 °C	1,296 mm	72	0
2019	37.7 °C26 August 2019	3.3 °C29 December 2019	18.4 °C	1,053 mm	64	0
2018	38.5 °C20 July 2018	-0.7 °C10 January 2018	18.4 °C	1,201 mm	81	2
2017	39.5 °C27 July 2017	3.0 °C13 January 2017	18.7 °C	988 mm	70	0
2016	38.6 °C25 August 2016	-2.6 °C25 January 2016	18.7 °C	1,240 mm	85	3
2015	36.7 °C2 August 2015	2.3 °C17 December 2015	19.1 °C	1,076 mm	71	0
2014	37.5 °C23 July 2014	1.7 °C19 December 2014	18.1 °C	1,297 mm	52	0
2013	40.8 °C23 August 2013	-0.7 °C1 January 2013	19.5 °C	996 mm	104	1
2012	37.5 °C11 August 2012	0.2 °C31 December 2012	17.7 °C	1,158 mm	61	0
2011	42.6 °C18 August 2011	0.1 °C21 January 2011	18.7 °C	845 mm	100	0
2010	39.2 °C11 August 2010	0.5 °C17 December 2010	18.3 °C	1,059 mm	69	0
2009	39.6 °C8 September 2009	2.4 °C27 January 2009	19.0 °C	926 mm	86	0
2008	38.3 °C26 July 2008	-1.4 °C29 January 2008	18.4 °C	1,000 mm	77	2
2007	35.6 °C19 May 2007	1.9 °C19 January 2007	18.9 °C	1,229 mm	84	0
2006	41.6 °C15 August 2006	-0.1 °C9 January 2006	19.2 °C	1,001 mm	87	1
2005	35.5 °C1 July 2005	-0.8 °C2 January 2005	18.1 °C	1,258 mm	69	1
2004	36.3 °C11 August 2004	-0.2 °C31 December 2004	18.0 °C	1,437 mm	59	1
2003	36.7 °C25 August 2003	1.6 °C6 January 2003	18.5 °C	1,168 mm	58	0
2002	37.5 °C16 July 2002	0.4 °C28 December 2002	18.6 °C	1,180 mm	63	0
2001	37.5 °C6 August 2001	0.8 °C22 December 2001	18.5 °C	1,106 mm	55	0
2000	36.5 °C25 July 2000	1.9 °C1 February 2000	17.9 °C	1,384 mm	59	0
1999	34.8 °C31 July 1999	1.2 °C26 December 1999	18.2 °C	1,443 mm	55	0
1998	36.1 °C28 April 1998	2.7 °C20 January 1998	19.0 °C	1,523 mm	77	0
1997	38.0 °C8 September 1997	2.3 °C24 January 1997	18.2 °C	1,011 mm	77	0
1996	36.7 °C4 August 1996	1.3 °C24 February 1996	17.4 °C	1,361 mm	65	0
1995	38.0 °C6 September 1995	2.1 °C6 January 1995	18.0 °C	1,129 mm	72	0
1994	38.9 °C5 August 1994	1.2 °C17 January 1994	18.3 °C	1,219 mm	83	0
1993	35.8 °C13 July 1993	0.2 °C24 January 1993	17.6 °C	1,052 mm	48	0
1992	37.0 °C7 August 1992	1.1 °C14 January 1992	17.6 °C	981 mm	62	0
1991	36.5 °C25 July 1991	-2.2 °C28 December 1991	17.7 °C	1,224 mm	64	2
1990	36.6 °C10 August 1990	1.4 °C31 January 1990	18.2 °C	1,086 mm	80	0
1989	36.2 °C22 July 1989	0.1 °C14 January 1989	17.2 °C	1,269 mm	54	0
1988	36.8 °C2 May 1988	1.5 °C18 January 1988	17.5 °C	1,221 mm	59	0
1987	34.8 °C23 May 1987	1.5 °C27 January 1987	18.0 °C	1,298 mm	45	0
1986	36.1 °C11 August 1986	0.8 °C2 March 1986	17.3 °C	1,364 mm	58	0
1985	36.3 °C5 August 1985	1.0 °C15 December 1985	17.3 °C	1,516 mm	56	0
1984	35.4 °C5 June 1984	0.7 °C18 December 1984	17.3 °C	1,383 mm	58	0
1983	35.0 °C25 July 1983	1.1 °C24 January 1983	17.7 °C	1,423 mm	44	0
1982	36.2 °C3 August 1982	-1.1 °C27 December 1982	17.3 °C	1,307 mm	48	4
1981	35.9 °C5 August 1981	1.7 °C26 January 1981	17.6 °C	1,145 mm	65	0
1980	36.0 °C27 July 1980	-2.0 °C8 February 1980	17.6 °C	1,102 mm	54	8
1979	35.8 °C9 August 1979	-2.2 °C19 November 1979	18.0 °C	1,446 mm	51	4
1978	37.3 °C11 July 1978	0.5 °C19 January 1978	18.3 °C	1,035 mm	81	0
1977	36.4 °C7 August 1977	-4.0 °C30 January 1977	17.8 °C	1,140 mm	64	3
1976	37.8 °C7 August 1976	-0.1 °C28 December 1976	17.1 °C	1,017 mm	52	1
1975	36.5 °C17 July 1975	-5.2 °C14 December 1975	17.9 °C	1,269 mm	68	6
1974	36.3 °C30 July 1974	1.5 °C18 January 1974	17.7 °C	1,296 mm	47	0
1973	36.8 °C26 August 1973	1.3 °C2 January 1973	18.5 °C	1,289 mm	68	0
1972	40.2 °C26 August 1972	0.4 °C8 February 1972	18.1 °C	1,150 mm	76	0
1971	36.5 °C6 July 1971	2.2 °C3 January 1971	18.1 °C	1,066 mm	69	0
1970	36.7 °C16 August 1970	-1.3 °C6 January 1970	17.6 °C	1,158 mm	70	5
1969	36.3 °C2 August 1969	-0.2 °C4 February 1969	18.0 °C	1,156 mm	74	1
1968	35.4 °C31 July 1968	-0.1 °C8 February 1968	17.2 °C	1,522 mm	44	1
1967	36.9 °C17 July 1967	-2.0 °C12 January 1967	17.3 °C	1,451 mm	65	3
1966	34.7 °C3 August 1966	-0.3 °C29 January 1966	17.7 °C	1,245 mm	54	1
1965	33.3 °C29 July 1965	-0.8 °C20 December 1965	17.3 °C	1,481 mm	30	1
1964	37.1 °C12 July 1964	0.2 °C25 February 1964	17.8 °C	1,369 mm	61	0
1963	37.7 °C26 July 1963	-1.4 °C14 January 1963	18.7 °C	1,162 mm	79	1
1962	36.5 °C18 July 1962	-0.7 °C30 December 1962	17.9 °C	1,374 mm	65	2
1961	36.7 °C21 July 1961	0.6 °C16 January 1961	18.3 °C	1,496 mm	91	0
1960	35.8 °C10 June 1960	-0.2 °C26 January 1960	18.2 °C	1,335 mm	70	1
1959	38.2 °C28 August 1959	1.4 °C11 January 1959	18.6 °C	898 mm	90	0
1958	36.3 °C25 July 1958	-0.5 °C1 February 1958	18.3 °C	1,092 mm	75	1
1957	37.5 °C31 August 1957	0.1 °C13 February 1957	17.8 °C	1,174 mm	48	0
1956	34.6 °C8 June 1956	-3.6 °C12 January 1956	17.6 °C	1,421 mm	62	7
1955	32.4 °C7 July 1955	-3.3 °C6 January 1955	17.7 °C	1,386 mm	49	7
1954	33.5 °C2 September 1954	-1.0 °C31 December 1954	17.7 °C	1,837 mm	53	3
1953	34.6 °C18 August 1953	1.3 °C19 January 1953	18.5 °C	1,436 mm	71	0
1952	34.6 °C2 July 1952	-0.5 °C7 January 1952	18.1 °C	1,412 mm	55	2
1951	34.2 °C8 September 1951	-1.4 °C14 January 1951	17.7 °C	1,484 mm	66	1
1950	33.3 °C23 July 1950	-1.1 °C17 December 1950	17.5 °C	1,588 mm	33	1
1949	33.5 °C9 July 1949	-2.4 °C8 January 1949	17.9 °C	1,188 mm	67	2
1948	32.9 °C13 August 1948	-1.6 °C29 January 1948	17.9 °C	1,326 mm	55	3
1947	33.0 °C25 July 1947	-2.6 °C20 December 1947	18.2 °C	1,456 mm	66	3
1946	37.5 °C19 July 1946	-0.1 °C14 January 1946	18.5 °C	1,102 mm	95	1
1945	33.2 °C7 June 1945	-3.9 °C11 February 1945	16.9 °C	1,351 mm	36	13
1944	35.0 °C4 August 1944	-3.7 °C18 December 1944	17.2 °C	1,271 mm	63	9
1943	32.7 °C4 August 1943	-2.1 °C8 February 1943	17.7 °C	1,869 mm	34	1
1942	31.9 °C3 July 1942	-0.9 °C8 January 1942	18.1 °C	1,598 mm	38	1
1941	33.6 °C11 July 1941	0.1 °C24 January 1941	17.8 °C	1,154 mm	45	0
1940	33.8 °C14 July 1940	-2.0 °C24 January 1940	17.6 °C	1,108 mm	62	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

23.1 °C

+1.8 °C

Hot days (≥ 30 °C)

105 d/yr

+39

Frost days (< 0 °C)

0 d/yr

-1

Annual rainfall

1386 mm

+137 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	11.9 °C	+1.6 °C	41 mm	+17 mm
Feb	11.9 °C	-0.6 °C	41 mm	+14 mm
Mar	17.2 °C	-0.4 °C	48 mm	-3 mm
Apr	25.8 °C	+3.1 °C	68 mm	-24 mm
May	28.2 °C	+2.1 °C	99 mm	-33 mm
Jun	31.4 °C	+3.1 °C	163 mm	-3 mm
Jul	34.4 °C	+3.2 °C	262 mm	+33 mm
Aug	34.3 °C	+2.9 °C	230 mm	+20 mm
Sep	28.0 °C	+1.2 °C	252 mm	+109 mm
Oct	23.1 °C	+2.0 °C	127 mm	+38 mm
Nov	16.4 °C	-0.1 °C	35 mm	-21 mm
Dec	13.3 °C	+1.8 °C	22 mm	-9 mm

The year's extremes

Hottest day

40.6 °C

3 Aug 2025

Coldest day

2.3 °C

12 Jan 2025

Wettest day

74.3 mm

30 Jun 2025

Windiest day

35.4 km/h

12 Apr 2025

Strongest gust

65.5 km/h

12 Apr 2025

Hottest feels-like

46.9 °C

16 Jul 2025

Coldest feels-like

-1.0 °C

26 Jan 2025

Sunniest day

13.9 h

11 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 Ronglong?

Ronglong has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 18.0 °C and it receives 1,249 mm of precipitation per year.

What is the hottest day ever recorded in Ronglong?

The hottest day measured in Ronglong between 1940 and 2025 was 20 August 2022, reaching 42.8 °C.

What is the coldest day in Ronglong?

The coldest day measured in Ronglong between 1940 and 2025 was 14 December 1975, at -5.2 °C.

Does it snow in Ronglong?

Yes. Ronglong gets on average 1.7 cm of snow per year and has around 1 frost days.

Has the climate of Ronglong warmed?

Yes: Ronglong warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Ronglong?

The wettest day measured in Ronglong between 1940 and 2025 was 30 August 1970, with 125 mm of rain in 24 hours.

What was the windiest day in Ronglong?

The windiest day measured in Ronglong between 1940 and 2025 was 13 May 1946, with winds reaching 63.8 km/h.

What is the warmest month in Ronglong?

The warmest month in Ronglong is July (27.5 °C on average); the coldest is January (7.7 °C).

How much does it rain in Ronglong?

Ronglong receives on average 1,249 mm of precipitation per year, spread over about 168 rainy days.

Is it sunny in Ronglong?

Ronglong gets on average 6.4 hours of sunshine per day, roughly 2,336 hours per year over 1940-2025.

What is the biggest single-day snowfall in Ronglong?

The heaviest 24-hour snowfall measured in Ronglong between 1940 and 2025 was 5 January 1970, with 6.0 cm.

Are there tropical nights in Ronglong?

Yes: Ronglong has on average 115 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Ronglong?

In Ronglong, between 1940 and 2025, the highest apparent temperature reached 46.9 °C on 16 July 2025, and the lowest was -10.0 °C on 14 December 1975.

Compare Ronglong with another city

Pick a second city: its normals will be set against these, indicator by indicator.

Nearby cities

The climate around Ronglong

Other cities — China

All cities in China →