Yajalón climate — normals and trends

Q: What is the climate of Yajalón?

Yajalón has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 21.4 °C and it receives 2,218 mm of precipitation per year.

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

The hottest day measured in Yajalón between 1940 and 2025 was 7 May 2024, reaching 38.1 °C.

Q: What is the coldest day in Yajalón?

The coldest day measured in Yajalón between 1940 and 2025 was 6 December 1945, at 4.9 °C.

Q: Does it snow in Yajalón?

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

Q: Has the climate of Yajalón warmed?

Yes: Yajalón warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Yajalón?

The wettest day measured in Yajalón between 1940 and 2025 was 22 August 1973, with 349 mm of rain in 24 hours.

Q: What was the windiest day in Yajalón?

The windiest day measured in Yajalón between 1940 and 2025 was 7 March 2008, with winds reaching 20.4 km/h.

Q: What is the warmest month in Yajalón?

The warmest month in Yajalón is May (24.0 °C on average); the coldest is January (18.4 °C).

Q: How much does it rain in Yajalón?

Yajalón receives on average 2,218 mm of precipitation per year, spread over about 223 rainy days.

Q: Is it sunny in Yajalón?

Yajalón gets on average 10.1 hours of sunshine per day, roughly 3,687 hours per year over 1940-2025.

Yajalón (Mexico) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 21.4 °C and it receives 2,218 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 May (24.0 °C on average) and the coldest is January (18.4 °C). Rainfall peaks in September.

Yajalón averages 0 frost days, 51 hot days (≥ 30 °C) and 223 rainy days per year.

Yajalón has warmed by +2.1 °C between 1940 and 2025, or +0.25 °C per decade. This trend is statistically significant.

The hottest day of the period reached 38.1 °C (on 7 May 2024) and the coldest 4.9 °C (on 6 December 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

YajalónChiapas

coords: 17.17°, -92.33°
period: 1940–2025 · 86 yrs

AfTropical rainforestWarmest monthMayColdest monthJanuaryWettest monthSeptemberDriest monthMarch

Mean daily temperature

21.4°C

Average daily high

26.6°C

Average daily low

16.8°C

Annual rainfall

2,218mm

Sunshine / day

10.1h

Mean relative humidity

83%

Average peak wind

7.9km/h

Seasonal range

5.6°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

51 d/yr

Rainy days (≥ 1 mm)

223 d/yr

Annual snowfall

0.0 cm

Average feels-like high

30.5 °C

Average feels-like low

18.2 °C

Average peak gust

30.3 km/h

Tropical nights (≥ 20 °C)

24 d/yr

Solar radiation

19.0 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.1 °C

since 1940

+0.3 °C per decade · r² = 0.76 · 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

38.1 °C

7 May 2024

Coldest day

4.9 °C

6 December 1945

Wettest day

349 mm

22 August 1973

Windiest day

20.4 km/h

7 March 2008

Strongest gust

84.2 km/h

22 August 1973

Hottest feels-like

42.9 °C

7 April 1998

Coldest feels-like

2.8 °C

6 December 1945

Sunniest day

12.7 h

17 July 2025

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	35.3 °C20 May 2025	11.5 °C26 February 2025	22.7 °C	1,959 mm	105
2024	38.1 °C7 May 2024	7.6 °C8 February 2024	23.3 °C	2,183 mm	121
2023	35.1 °C17 June 2023	9.7 °C21 December 2023	22.9 °C	2,413 mm	99
2022	34.7 °C20 May 2022	8.5 °C31 January 2022	22.1 °C	2,593 mm	52
2021	34.5 °C17 April 2021	7.4 °C4 February 2021	22.4 °C	1,939 mm	75
2020	37.7 °C23 April 2020	10.7 °C23 January 2020	22.8 °C	2,895 mm	110
2019	36.9 °C9 May 2019	8.9 °C22 January 2019	22.8 °C	1,887 mm	121
2018	34.1 °C9 April 2018	6.4 °C22 December 2018	22.1 °C	1,985 mm	72
2017	36.0 °C26 April 2017	6.5 °C24 January 2017	22.2 °C	2,042 mm	61
2016	35.0 °C1 April 2016	5.6 °C25 January 2016	22.5 °C	1,749 mm	94
2015	37.0 °C26 April 2015	7.6 °C29 January 2015	22.7 °C	2,262 mm	114
2014	34.6 °C18 July 2014	9.4 °C23 January 2014	22.1 °C	2,322 mm	91
2013	34.6 °C23 March 2013	6.9 °C4 March 2013	22.3 °C	3,088 mm	78
2012	34.7 °C11 May 2012	8.6 °C24 December 2012	22.1 °C	2,002 mm	66
2011	36.4 °C19 May 2011	8.6 °C15 January 2011	22.4 °C	2,526 mm	101
2010	36.3 °C24 April 2010	6.9 °C16 December 2010	21.9 °C	2,733 mm	78
2009	35.4 °C28 May 2009	7.6 °C23 January 2009	22.3 °C	2,005 mm	109
2008	34.6 °C14 May 2008	8.2 °C4 January 2008	21.8 °C	2,405 mm	57
2007	34.9 °C3 May 2007	8.3 °C20 February 2007	22.3 °C	1,817 mm	79
2006	34.7 °C7 May 2006	7.5 °C24 November 2006	22.0 °C	2,399 mm	70
2005	36.0 °C30 April 2005	7.4 °C24 November 2005	22.1 °C	1,942 mm	72
2004	32.9 °C10 April 2004	9.4 °C10 November 2004	21.6 °C	2,143 mm	48
2003	37.1 °C25 April 2003	8.0 °C21 December 2003	22.0 °C	2,084 mm	86
2002	34.3 °C2 May 2002	5.6 °C10 January 2002	21.8 °C	2,212 mm	58
2001	33.1 °C15 April 2001	8.9 °C24 January 2001	21.7 °C	2,264 mm	47
2000	35.6 °C29 March 2000	10.0 °C10 February 2000	21.8 °C	2,020 mm	66
1999	35.1 °C4 May 1999	9.2 °C12 January 1999	21.5 °C	2,255 mm	59
1998	37.8 °C7 April 1998	5.5 °C4 February 1998	22.5 °C	2,119 mm	102
1997	33.0 °C26 April 1997	6.6 °C16 December 1997	22.0 °C	2,189 mm	55
1996	32.2 °C14 April 1996	5.9 °C6 February 1996	21.5 °C	2,431 mm	29
1995	33.4 °C10 April 1995	9.7 °C7 February 1995	22.2 °C	2,378 mm	58
1994	33.2 °C27 March 1994	8.1 °C4 March 1994	22.0 °C	1,609 mm	67
1993	35.9 °C14 April 1993	9.3 °C15 March 1993	21.7 °C	2,004 mm	51
1992	33.7 °C19 April 1992	10.1 °C7 February 1992	21.6 °C	2,175 mm	32
1991	35.0 °C27 April 1991	8.3 °C13 February 1991	21.9 °C	1,876 mm	64
1990	32.0 °C14 May 1990	10.8 °C12 December 1990	21.4 °C	2,154 mm	28
1989	33.1 °C4 March 1989	6.4 °C25 February 1989	21.0 °C	2,285 mm	24
1988	36.2 °C21 May 1988	9.4 °C27 January 1988	21.4 °C	2,399 mm	48
1987	35.1 °C23 March 1987	6.3 °C28 January 1987	21.2 °C	2,292 mm	45
1986	33.4 °C12 March 1986	4.9 °C28 January 1986	21.2 °C	2,039 mm	32
1985	32.4 °C28 April 1985	9.1 °C25 January 1985	21.0 °C	2,038 mm	26
1984	37.0 °C3 May 1984	9.0 °C1 March 1984	21.1 °C	2,475 mm	45
1983	35.3 °C20 May 1983	8.5 °C16 January 1983	21.5 °C	2,040 mm	54
1982	32.6 °C2 April 1982	7.5 °C19 December 1982	21.5 °C	2,124 mm	39
1981	34.0 °C18 May 1981	7.1 °C14 January 1981	20.8 °C	2,418 mm	18
1980	33.9 °C16 May 1980	5.9 °C19 December 1980	21.1 °C	2,062 mm	39
1979	32.8 °C9 May 1979	9.0 °C22 January 1979	21.1 °C	2,675 mm	28
1978	35.4 °C3 May 1978	8.5 °C7 February 1978	21.2 °C	2,533 mm	38
1977	33.3 °C2 April 1977	8.7 °C23 December 1977	21.1 °C	2,035 mm	24
1976	32.5 °C26 May 1976	7.7 °C3 February 1976	20.7 °C	2,373 mm	19
1975	35.7 °C8 May 1975	7.5 °C26 February 1975	21.5 °C	2,067 mm	65
1974	35.2 °C10 May 1974	7.5 °C13 February 1974	20.8 °C	2,614 mm	23
1973	33.8 °C3 April 1973	6.8 °C12 December 1973	21.1 °C	3,009 mm	37
1972	35.0 °C15 April 1972	8.3 °C28 December 1972	21.4 °C	2,075 mm	47
1971	34.7 °C27 April 1971	7.9 °C15 February 1971	21.2 °C	1,805 mm	43
1970	33.0 °C30 April 1970	7.0 °C5 February 1970	20.7 °C	2,219 mm	34
1969	34.7 °C5 May 1969	10.5 °C25 December 1969	21.2 °C	2,512 mm	38
1968	31.3 °C4 May 1968	6.3 °C28 February 1968	20.5 °C	2,265 mm	14
1967	34.3 °C31 May 1967	8.6 °C15 February 1967	20.8 °C	2,156 mm	27
1966	31.1 °C12 April 1966	7.7 °C21 December 1966	20.3 °C	2,468 mm	14
1965	33.6 °C26 April 1965	6.6 °C20 January 1965	20.8 °C	1,928 mm	37
1964	35.5 °C1 May 1964	8.8 °C15 January 1964	20.8 °C	2,122 mm	29
1963	33.5 °C12 April 1963	5.1 °C26 December 1963	20.9 °C	2,054 mm	52
1962	32.7 °C4 June 1962	8.5 °C7 January 1962	20.6 °C	1,951 mm	32
1961	33.7 °C31 March 1961	9.0 °C11 March 1961	20.7 °C	2,082 mm	39
1960	35.4 °C30 April 1960	5.8 °C1 February 1960	20.7 °C	2,092 mm	39
1959	31.5 °C22 May 1959	9.1 °C4 December 1959	20.5 °C	2,714 mm	12
1958	33.4 °C10 May 1958	7.7 °C9 January 1958	20.8 °C	2,285 mm	28
1957	35.7 °C23 March 1957	6.9 °C11 December 1957	20.9 °C	1,975 mm	61
1956	33.5 °C15 April 1956	6.8 °C15 January 1956	20.3 °C	2,298 mm	11
1955	35.4 °C19 May 1955	8.1 °C1 February 1955	21.1 °C	2,167 mm	60
1954	30.6 °C12 March 1954	7.1 °C10 February 1954	20.1 °C	2,523 mm	2
1953	36.7 °C12 April 1953	6.4 °C11 January 1953	21.3 °C	1,973 mm	56
1952	32.9 °C22 March 1952	9.1 °C28 February 1952	20.7 °C	2,364 mm	20
1951	34.0 °C25 May 1951	7.6 °C17 January 1951	21.2 °C	2,163 mm	39
1950	33.8 °C16 May 1950	8.1 °C23 December 1950	20.5 °C	2,020 mm	31
1949	34.8 °C1 May 1949	7.9 °C20 November 1949	21.2 °C	1,680 mm	54
1948	34.9 °C31 March 1948	6.0 °C16 January 1948	20.8 °C	2,572 mm	15
1947	33.0 °C4 April 1947	8.5 °C17 February 1947	21.0 °C	2,575 mm	19
1946	33.6 °C20 May 1946	9.4 °C6 December 1946	21.1 °C	2,064 mm	33
1945	36.7 °C26 April 1945	4.9 °C6 December 1945	21.2 °C	1,924 mm	54
1944	33.6 °C26 May 1944	8.7 °C22 January 1944	20.7 °C	1,860 mm	42
1943	31.2 °C26 August 1943	7.9 °C22 December 1943	20.3 °C	2,758 mm	14
1942	33.7 °C14 May 1942	8.8 °C13 January 1942	20.6 °C	2,601 mm	19
1941	33.8 °C7 April 1941	6.8 °C11 February 1941	21.0 °C	1,763 mm	39
1940	32.7 °C1 May 1940	6.9 °C30 December 1940	20.7 °C	2,206 mm	27

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

28.1 °C

+1.5 °C

Hot days (≥ 30 °C)

105 d/yr

+54

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1959 mm

-259 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	24.7 °C	+1.3 °C	110 mm	-28 mm
Feb	26.6 °C	+1.9 °C	105 mm	-3 mm
Mar	28.5 °C	+1.4 °C	84 mm	-16 mm
Apr	28.6 °C	-0.5 °C	94 mm	-8 mm
May	32.5 °C	+2.8 °C	34 mm	-128 mm
Jun	29.5 °C	+1.3 °C	287 mm	+0 mm
Jul	30.0 °C	+2.0 °C	137 mm	-55 mm
Aug	29.6 °C	+1.5 °C	197 mm	-25 mm
Sep	28.9 °C	+1.7 °C	328 mm	+21 mm
Oct	27.5 °C	+1.6 °C	225 mm	-41 mm
Nov	25.7 °C	+1.0 °C	143 mm	-47 mm
Dec	25.3 °C	+1.6 °C	217 mm	+71 mm

The year's extremes

Hottest day

35.3 °C

20 May 2025

Coldest day

11.5 °C

26 Feb 2025

Wettest day

65.7 mm

10 Nov 2025

Windiest day

14.5 km/h

19 Jul 2025

Strongest gust

56.9 km/h

21 Jan 2025

Hottest feels-like

41.6 °C

20 May 2025

Coldest feels-like

11.4 °C

17 Dec 2025

Sunniest day

12.7 h

17 Jul 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 Yajalón?

Yajalón has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 21.4 °C and it receives 2,218 mm of precipitation per year.

What is the hottest day ever recorded in Yajalón?

The hottest day measured in Yajalón between 1940 and 2025 was 7 May 2024, reaching 38.1 °C.

What is the coldest day in Yajalón?

The coldest day measured in Yajalón between 1940 and 2025 was 6 December 1945, at 4.9 °C.

Does it snow in Yajalón?

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

Has the climate of Yajalón warmed?

Yes: Yajalón warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Yajalón?

The wettest day measured in Yajalón between 1940 and 2025 was 22 August 1973, with 349 mm of rain in 24 hours.

What was the windiest day in Yajalón?

The windiest day measured in Yajalón between 1940 and 2025 was 7 March 2008, with winds reaching 20.4 km/h.

What is the warmest month in Yajalón?

The warmest month in Yajalón is May (24.0 °C on average); the coldest is January (18.4 °C).

How much does it rain in Yajalón?

Yajalón receives on average 2,218 mm of precipitation per year, spread over about 223 rainy days.

Is it sunny in Yajalón?

Yajalón gets on average 10.1 hours of sunshine per day, roughly 3,687 hours per year over 1940-2025.

Are there tropical nights in Yajalón?

Yes: Yajalón has on average 24 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Yajalón?

In Yajalón, between 1940 and 2025, the highest apparent temperature reached 42.9 °C on 7 April 1998, and the lowest was 2.8 °C on 6 December 1945.

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