Mengman climate — normals and trends

Q: What is the climate of Mengman?

Mengman has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 20.8 °C and it receives 1,676 mm of precipitation per year.

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

The hottest day measured in Mengman between 1940 and 2025 was 20 May 2019, reaching 39.8 °C.

Q: What is the coldest day in Mengman?

The coldest day measured in Mengman between 1940 and 2025 was 5 January 1974, at -0.5 °C.

Q: Does it snow in Mengman?

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

Q: Has the climate of Mengman warmed?

Yes: Mengman warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Mengman?

The wettest day measured in Mengman between 1940 and 2025 was 20 May 1981, with 124 mm of rain in 24 hours.

Q: What was the windiest day in Mengman?

The windiest day measured in Mengman between 1940 and 2025 was 28 March 1968, with winds reaching 22.1 km/h.

Q: What is the warmest month in Mengman?

The warmest month in Mengman is June (24.2 °C on average); the coldest is January (15.2 °C).

Q: How much does it rain in Mengman?

Mengman receives on average 1,676 mm of precipitation per year, spread over about 178 rainy days.

Q: Is it sunny in Mengman?

Mengman gets on average 8.9 hours of sunshine per day, roughly 3,249 hours per year over 1940-2025.

Mengman (China) has a humid subtropical, dry winter climate (Cwa) under the Köppen-Geiger classification. Its mean annual temperature is 20.8 °C and it receives 1,676 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 June (24.2 °C on average) and the coldest is January (15.2 °C). Rainfall peaks in August.

Mengman averages 0 frost days, 72 hot days (≥ 30 °C) and 178 rainy days per year.

Mengman has warmed by +2.3 °C between 1940 and 2025, or +0.27 °C per decade. This trend is statistically significant.

The hottest day of the period reached 39.8 °C (on 20 May 2019) and the coldest -0.5 °C (on 5 January 1974).

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

MengmanYunnan

coords: 22.32°, 100.89°
period: 1940–2025 · 86 yrs

CwaHumid subtropical, dry winterWarmest monthJuneColdest monthJanuaryWettest monthAugustDriest monthFebruary

Mean daily temperature

20.8°C

Average daily high

26.6°C

Average daily low

16.4°C

Annual rainfall

1,676mm

Sunshine / day

8.9h

Mean relative humidity

77%

Average peak wind

8.7km/h

Seasonal range

9.0°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

72 d/yr

Rainy days (≥ 1 mm)

178 d/yr

Annual snowfall

0.0 cm

Average feels-like high

28.3 °C

Average feels-like low

17.7 °C

Average peak gust

29.4 km/h

Tropical nights (≥ 20 °C)

111 d/yr

Solar radiation

16.1 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.3 °C

since 1940

+0.3 °C per decade · r² = 0.81 · 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

39.8 °C

20 May 2019

Coldest day

-0.5 °C

5 January 1974

Wettest day

124 mm

20 May 1981

Windiest day

22.1 km/h

28 March 1968

Strongest gust

67.0 km/h

24 August 1987

Hottest feels-like

40.6 °C

23 May 2021

Coldest feels-like

-3.3 °C

3 January 1974

Sunniest day

13.0 h

1 July 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	35.9 °C9 May 2025	5.4 °C29 November 2025	21.4 °C	2,006 mm	90	0
2024	37.4 °C8 April 2024	9.2 °C19 February 2024	22.1 °C	2,087 mm	120	0
2023	37.3 °C1 June 2023	6.5 °C8 January 2023	22.0 °C	1,361 mm	122	0
2022	35.3 °C28 April 2022	6.6 °C14 February 2022	21.4 °C	1,546 mm	89	0
2021	37.1 °C24 April 2021	5.9 °C10 February 2021	21.5 °C	1,414 mm	106	0
2020	37.1 °C8 May 2020	5.7 °C26 January 2020	22.1 °C	1,263 mm	130	0
2019	39.8 °C20 May 2019	2.1 °C8 December 2019	22.2 °C	944 mm	153	0
2018	35.3 °C23 April 2018	8.3 °C27 December 2018	21.2 °C	1,842 mm	78	0
2017	36.6 °C23 May 2017	2.8 °C21 December 2017	21.7 °C	1,634 mm	109	0
2016	38.1 °C11 May 2016	5.1 °C26 January 2016	21.8 °C	1,330 mm	116	0
2015	36.0 °C6 May 2015	4.8 °C14 January 2015	21.8 °C	1,528 mm	123	0
2014	37.9 °C23 April 2014	4.8 °C22 January 2014	21.9 °C	1,389 mm	120	0
2013	36.7 °C21 May 2013	2.8 °C17 December 2013	21.7 °C	1,583 mm	125	0
2012	37.2 °C26 April 2012	5.7 °C16 January 2012	22.1 °C	1,573 mm	108	0
2011	34.7 °C11 May 2011	6.1 °C21 January 2011	21.1 °C	1,471 mm	78	0
2010	37.9 °C5 May 2010	6.7 °C3 January 2010	22.1 °C	1,424 mm	120	0
2009	35.8 °C10 May 2009	6.3 °C30 December 2009	21.7 °C	1,566 mm	113	0
2008	35.5 °C21 April 2008	4.5 °C2 December 2008	21.1 °C	1,827 mm	65	0
2007	34.8 °C31 March 2007	6.9 °C22 February 2007	21.3 °C	1,512 mm	86	0
2006	36.1 °C12 April 2006	4.9 °C23 December 2006	21.6 °C	1,561 mm	101	0
2005	36.4 °C17 May 2005	7.3 °C31 December 2005	21.8 °C	1,462 mm	103	0
2004	36.4 °C26 April 2004	5.9 °C13 December 2004	21.1 °C	1,602 mm	90	0
2003	35.8 °C8 May 2003	8.0 °C27 January 2003	21.7 °C	1,189 mm	83	0
2002	34.6 °C21 April 2002	7.3 °C22 December 2002	21.4 °C	1,625 mm	70	0
2001	37.2 °C7 April 2001	5.6 °C11 January 2001	21.5 °C	1,794 mm	77	0
2000	33.6 °C8 April 2000	6.5 °C9 January 2000	21.1 °C	1,697 mm	55	0
1999	35.0 °C25 April 1999	-0.3 °C27 December 1999	21.3 °C	1,889 mm	62	1
1998	35.2 °C10 May 1998	5.6 °C16 December 1998	21.9 °C	1,555 mm	88	0
1997	36.5 °C15 May 1997	4.7 °C19 January 1997	21.1 °C	1,590 mm	61	0
1996	36.4 °C17 April 1996	3.8 °C1 January 1996	21.1 °C	1,709 mm	66	0
1995	36.0 °C22 April 1995	4.3 °C31 December 1995	21.4 °C	1,769 mm	83	0
1994	36.6 °C11 April 1994	6.5 °C4 January 1994	21.3 °C	2,089 mm	68	0
1993	33.8 °C2 April 1993	2.1 °C27 December 1993	20.9 °C	1,616 mm	74	0
1992	36.0 °C13 May 1992	4.9 °C5 January 1992	20.6 °C	1,515 mm	103	0
1991	36.2 °C18 April 1991	6.0 °C18 December 1991	21.1 °C	1,749 mm	69	0
1990	35.4 °C22 April 1990	4.9 °C2 January 1990	20.8 °C	1,739 mm	53	0
1989	36.1 °C8 May 1989	3.8 °C9 January 1989	20.9 °C	1,728 mm	78	0
1988	35.2 °C7 April 1988	5.8 °C20 December 1988	20.9 °C	1,542 mm	66	0
1987	36.6 °C28 May 1987	4.0 °C26 December 1987	21.1 °C	1,642 mm	83	0
1986	36.2 °C2 June 1986	3.0 °C5 March 1986	20.7 °C	1,716 mm	72	0
1985	35.1 °C3 April 1985	3.0 °C25 December 1985	20.6 °C	2,102 mm	51	0
1984	35.2 °C20 April 1984	6.1 °C22 January 1984	20.9 °C	1,753 mm	78	0
1983	37.5 °C18 April 1983	3.6 °C4 December 1983	20.7 °C	1,767 mm	104	0
1982	35.1 °C13 May 1982	3.2 °C28 December 1982	20.5 °C	1,849 mm	66	0
1981	34.5 °C9 April 1981	6.1 °C27 December 1981	20.8 °C	1,910 mm	72	0
1980	37.0 °C15 May 1980	4.9 °C17 January 1980	21.2 °C	1,568 mm	80	0
1979	36.2 °C14 May 1979	4.5 °C12 January 1979	20.9 °C	1,338 mm	85	0
1978	34.6 °C26 April 1978	4.0 °C13 January 1978	20.3 °C	1,886 mm	69	0
1977	34.2 °C17 April 1977	5.5 °C8 January 1977	20.1 °C	1,906 mm	66	0
1976	34.6 °C16 April 1976	4.0 °C1 January 1976	20.2 °C	1,937 mm	61	0
1975	36.0 °C30 April 1975	0.8 °C24 December 1975	20.5 °C	1,816 mm	74	0
1974	32.8 °C16 March 1974	-0.5 °C5 January 1974	20.1 °C	1,798 mm	37	3
1973	34.5 °C15 April 1973	1.9 °C31 December 1973	20.5 °C	1,939 mm	52	0
1972	34.4 °C15 May 1972	4.6 °C20 January 1972	20.3 °C	2,126 mm	63	0
1971	35.2 °C19 May 1971	3.0 °C6 January 1971	19.6 °C	2,009 mm	45	0
1970	34.5 °C11 May 1970	3.7 °C21 December 1970	20.6 °C	1,983 mm	69	0
1969	36.2 °C28 April 1969	4.7 °C23 January 1969	20.7 °C	1,635 mm	94	0
1968	34.4 °C26 May 1968	4.1 °C19 January 1968	20.1 °C	1,854 mm	47	0
1967	34.4 °C4 April 1967	5.7 °C22 January 1967	20.1 °C	1,904 mm	55	0
1966	37.9 °C2 May 1966	6.8 °C26 December 1966	20.5 °C	1,711 mm	49	0
1965	36.7 °C15 May 1965	4.2 °C17 January 1965	20.0 °C	1,744 mm	45	0
1964	34.2 °C10 April 1964	2.5 °C29 December 1964	20.5 °C	1,790 mm	53	0
1963	36.7 °C25 April 1963	4.6 °C28 January 1963	20.5 °C	1,675 mm	83	0
1962	35.1 °C12 April 1962	3.7 °C29 December 1962	20.6 °C	1,517 mm	78	0
1961	36.4 °C25 April 1961	4.2 °C17 January 1961	20.7 °C	1,829 mm	67	0
1960	38.7 °C29 April 1960	5.4 °C3 January 1960	20.9 °C	2,016 mm	81	0
1959	37.2 °C12 April 1959	4.5 °C2 January 1959	20.6 °C	1,683 mm	66	0
1958	37.6 °C31 May 1958	4.4 °C25 December 1958	20.5 °C	1,791 mm	83	0
1957	38.2 °C26 May 1957	4.5 °C26 January 1957	20.9 °C	1,583 mm	80	0
1956	37.2 °C19 April 1956	4.2 °C4 January 1956	20.3 °C	1,508 mm	66	0
1955	33.8 °C22 March 1955	2.7 °C4 December 1955	19.8 °C	1,708 mm	37	0
1954	35.7 °C27 April 1954	3.3 °C16 December 1954	20.2 °C	1,455 mm	41	0
1953	31.9 °C14 August 1953	3.3 °C27 January 1953	19.7 °C	1,413 mm	29	0
1952	35.9 °C7 May 1952	6.4 °C17 December 1952	20.2 °C	1,691 mm	36	0
1951	34.5 °C13 May 1951	6.0 °C31 January 1951	20.0 °C	1,775 mm	33	0
1950	36.3 °C3 May 1950	4.1 °C7 January 1950	20.2 °C	1,630 mm	46	0
1949	31.7 °C9 July 1949	5.6 °C13 February 1949	20.0 °C	1,539 mm	15	0
1948	32.6 °C15 March 1948	3.5 °C4 January 1948	19.6 °C	1,687 mm	22	0
1947	34.3 °C8 May 1947	4.6 °C31 December 1947	19.8 °C	1,505 mm	21	0
1946	33.7 °C19 March 1946	3.6 °C8 January 1946	19.7 °C	1,197 mm	33	0
1945	32.9 °C2 April 1945	6.3 °C27 December 1945	19.4 °C	1,886 mm	15	0
1944	33.9 °C24 April 1944	6.2 °C22 December 1944	19.8 °C	1,653 mm	37	0
1943	34.4 °C7 April 1943	5.3 °C11 December 1943	19.6 °C	1,677 mm	42	0
1942	35.1 °C17 April 1942	5.2 °C14 December 1942	19.4 °C	1,746 mm	32	0
1941	35.2 °C9 May 1941	6.8 °C24 January 1941	19.8 °C	1,856 mm	37	0
1940	34.1 °C26 April 1940	2.9 °C3 January 1940	19.5 °C	1,723 mm	19	0

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

27.3 °C

+0.7 °C

Hot days (≥ 30 °C)

90 d/yr

+18

Frost days (< 0 °C)

0 d/yr

Annual rainfall

2006 mm

+330 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	22.6 °C	+0.3 °C	6 mm	-14 mm
Feb	26.9 °C	+1.5 °C	19 mm	+1 mm
Mar	29.3 °C	+0.7 °C	7 mm	-25 mm
Apr	30.0 °C	-0.4 °C	45 mm	-22 mm
May	29.1 °C	-0.6 °C	214 mm	+42 mm
Jun	28.8 °C	+0.4 °C	299 mm	+38 mm
Jul	28.3 °C	+0.7 °C	561 mm	+226 mm
Aug	28.3 °C	+0.7 °C	378 mm	+32 mm
Sep	28.7 °C	+1.2 °C	269 mm	+37 mm
Oct	27.7 °C	+1.7 °C	117 mm	-6 mm
Nov	23.8 °C	+0.2 °C	82 mm	+33 mm
Dec	23.6 °C	+2.1 °C	9 mm	-13 mm

The year's extremes

Hottest day

35.9 °C

9 May 2025

Coldest day

5.4 °C

29 Nov 2025

Wettest day

58.7 mm

6 Aug 2025

Windiest day

19.2 km/h

26 Jan 2025

Strongest gust

56.9 km/h

1 Jun 2025

Hottest feels-like

38.9 °C

21 Jul 2025

Coldest feels-like

3.6 °C

29 Nov 2025

Sunniest day

13.0 h

13 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 Mengman?

Mengman has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 20.8 °C and it receives 1,676 mm of precipitation per year.

What is the hottest day ever recorded in Mengman?

The hottest day measured in Mengman between 1940 and 2025 was 20 May 2019, reaching 39.8 °C.

What is the coldest day in Mengman?

The coldest day measured in Mengman between 1940 and 2025 was 5 January 1974, at -0.5 °C.

Does it snow in Mengman?

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

Has the climate of Mengman warmed?

Yes: Mengman warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Mengman?

The wettest day measured in Mengman between 1940 and 2025 was 20 May 1981, with 124 mm of rain in 24 hours.

What was the windiest day in Mengman?

The windiest day measured in Mengman between 1940 and 2025 was 28 March 1968, with winds reaching 22.1 km/h.

What is the warmest month in Mengman?

The warmest month in Mengman is June (24.2 °C on average); the coldest is January (15.2 °C).

How much does it rain in Mengman?

Mengman receives on average 1,676 mm of precipitation per year, spread over about 178 rainy days.

Is it sunny in Mengman?

Mengman gets on average 8.9 hours of sunshine per day, roughly 3,249 hours per year over 1940-2025.

Are there tropical nights in Mengman?

Yes: Mengman has on average 111 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Mengman?

In Mengman, between 1940 and 2025, the highest apparent temperature reached 40.6 °C on 23 May 2021, and the lowest was -3.3 °C on 3 January 1974.

Compare Mengman with another city

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

Nearby cities

The climate around Mengman

Other cities — China

All cities in China →