Alto Alegre do Maranhão climate — normals and trends

Q: What is the climate of Alto Alegre do Maranhão?

Alto Alegre do Maranhão has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 27.4 °C and it receives 1,454 mm of precipitation per year.

Q: What is the hottest day ever recorded in Alto Alegre do Maranhão?

The hottest day measured in Alto Alegre do Maranhão between 1940 and 2025 was 24 October 2012, reaching 40.3 °C.

Q: What is the coldest day in Alto Alegre do Maranhão?

The coldest day measured in Alto Alegre do Maranhão between 1940 and 2025 was 26 July 2024, at 19.0 °C.

Q: Does it snow in Alto Alegre do Maranhão?

Almost never: Alto Alegre do Maranhão sees virtually no snow, with about 0 frost days per year.

Q: Has the climate of Alto Alegre do Maranhão warmed?

Yes: Alto Alegre do Maranhão warmed by +0.7 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Alto Alegre do Maranhão?

The wettest day measured in Alto Alegre do Maranhão between 1940 and 2025 was 27 March 1997, with 199 mm of rain in 24 hours.

Q: What was the windiest day in Alto Alegre do Maranhão?

The windiest day measured in Alto Alegre do Maranhão between 1940 and 2025 was 17 August 1991, with winds reaching 25.1 km/h.

Q: What is the warmest month in Alto Alegre do Maranhão?

The warmest month in Alto Alegre do Maranhão is October (29.5 °C on average); the coldest is March (25.8 °C).

Q: How much does it rain in Alto Alegre do Maranhão?

Alto Alegre do Maranhão receives on average 1,454 mm of precipitation per year, spread over about 164 rainy days.

Q: Is it sunny in Alto Alegre do Maranhão?

Alto Alegre do Maranhão gets on average 10.7 hours of sunshine per day, roughly 3,905 hours per year over 1940-2025.

Alto Alegre do Maranhão (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 27.4 °C and it receives 1,454 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 October (29.5 °C on average) and the coldest is March (25.8 °C). Rainfall peaks in March.

Alto Alegre do Maranhão averages 0 frost days, 296 hot days (≥ 30 °C) and 164 rainy days per year.

Alto Alegre do Maranhão has warmed by +0.7 °C between 1940 and 2025, or +0.09 °C per decade. This trend is statistically significant.

The hottest day of the period reached 40.3 °C (on 24 October 2012) and the coldest 19.0 °C (on 26 July 2024).

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

Alto Alegre do MaranhãoMaranhão

coords: -4.21°, -44.45°
period: 1940–2025 · 86 yrs

AwTropical savannaWarmest monthOctoberColdest monthMarchWettest monthMarchDriest monthAugust

Mean daily temperature

27.4°C

Average daily high

32.4°C

Average daily low

23.5°C

Annual rainfall

1,454mm

Sunshine / day

10.7h

Mean relative humidity

74%

Average peak wind

11.2km/h

Seasonal range

3.7°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

296 d/yr

Rainy days (≥ 1 mm)

164 d/yr

Annual snowfall

0.0 cm

Average feels-like high

37.1 °C

Average feels-like low

27.3 °C

Average peak gust

30.7 km/h

Tropical nights (≥ 20 °C)

364 d/yr

Solar radiation

19.1 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+0.7 °C

since 1940

+0.1 °C per decade · r² = 0.14 · 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

40.3 °C

24 October 2012

Coldest day

19.0 °C

26 July 2024

Wettest day

199 mm

27 March 1997

Windiest day

25.1 km/h

17 August 1991

Strongest gust

56.5 km/h

16 August 1991

Hottest feels-like

44.0 °C

21 October 2015

Coldest feels-like

17.9 °C

3 August 2001

Sunniest day

12.0 h

2 January 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	38.8 °C25 November 2025	21.0 °C14 July 2025	28.1 °C	1,336 mm	344
2024	37.4 °C13 October 2024	19.0 °C26 July 2024	28.3 °C	1,108 mm	347
2023	37.8 °C29 September 2023	20.1 °C15 August 2023	27.9 °C	1,234 mm	326
2022	37.2 °C31 October 2022	19.3 °C22 August 2022	27.3 °C	1,532 mm	317
2021	36.4 °C22 September 2021	19.6 °C3 August 2021	27.5 °C	1,404 mm	329
2020	38.0 °C21 October 2020	19.4 °C27 July 2020	27.8 °C	1,743 mm	336
2019	37.5 °C28 October 2019	20.4 °C11 August 2019	28.0 °C	1,453 mm	342
2018	37.7 °C20 November 2018	20.4 °C17 July 2018	27.7 °C	1,501 mm	328
2017	39.0 °C5 December 2017	19.9 °C19 July 2017	28.3 °C	1,428 mm	330
2016	38.6 °C4 November 2016	19.5 °C27 July 2016	28.7 °C	1,153 mm	348
2015	39.5 °C2 December 2015	21.1 °C15 July 2015	28.5 °C	1,131 mm	344
2014	37.9 °C19 October 2014	20.7 °C14 August 2014	27.9 °C	1,407 mm	332
2013	38.0 °C4 October 2013	21.8 °C1 August 2013	28.3 °C	1,417 mm	350
2012	40.3 °C24 October 2012	19.7 °C30 July 2012	28.4 °C	1,287 mm	347
2011	38.8 °C25 September 2011	20.2 °C19 July 2011	27.8 °C	1,699 mm	321
2010	38.5 °C9 October 2010	20.1 °C27 June 2010	28.5 °C	1,310 mm	343
2009	37.7 °C28 November 2009	21.0 °C10 August 2009	27.7 °C	2,002 mm	320
2008	37.8 °C31 October 2008	19.7 °C23 June 2008	27.8 °C	1,583 mm	318
2007	38.6 °C8 November 2007	20.3 °C30 July 2007	28.2 °C	1,306 mm	341
2006	37.9 °C8 October 2006	20.5 °C5 August 2006	27.8 °C	1,466 mm	316
2005	39.7 °C18 November 2005	20.9 °C11 September 2005	28.1 °C	1,343 mm	334
2004	37.8 °C18 November 2004	20.1 °C5 August 2004	27.7 °C	1,558 mm	329
2003	37.0 °C4 October 2003	20.2 °C28 June 2003	27.5 °C	1,569 mm	328
2002	37.8 °C22 October 2002	21.4 °C20 June 2002	27.5 °C	1,621 mm	321
2001	36.9 °C31 October 2001	20.0 °C29 July 2001	27.1 °C	1,495 mm	306
2000	37.6 °C7 November 2000	20.9 °C14 February 2000	27.0 °C	1,649 mm	299
1999	37.5 °C10 November 1999	20.4 °C4 July 1999	27.1 °C	1,896 mm	302
1998	38.2 °C30 October 1998	21.2 °C5 July 1998	28.1 °C	1,154 mm	340
1997	37.6 °C11 October 1997	20.1 °C16 June 1997	27.5 °C	1,517 mm	313
1996	36.9 °C11 November 1996	20.1 °C4 July 1996	27.2 °C	1,779 mm	300
1995	37.7 °C15 October 1995	20.5 °C13 July 1995	27.1 °C	1,770 mm	303
1994	36.9 °C18 December 1994	20.4 °C2 July 1994	27.1 °C	1,823 mm	295
1993	37.7 °C9 December 1993	20.5 °C30 July 1993	27.8 °C	1,394 mm	324
1992	38.8 °C13 January 1992	20.2 °C12 July 1992	27.9 °C	976 mm	331
1991	37.0 °C24 September 1991	20.7 °C30 July 1991	27.5 °C	1,293 mm	321
1990	36.3 °C16 October 1990	21.1 °C7 August 1990	27.4 °C	1,078 mm	336
1989	35.6 °C15 September 1989	20.8 °C1 September 1989	26.8 °C	1,891 mm	276
1988	36.1 °C24 September 1988	20.4 °C3 August 1988	27.1 °C	1,703 mm	305
1987	38.1 °C28 November 1987	21.7 °C27 June 1987	27.8 °C	1,180 mm	332
1986	35.5 °C15 September 1986	20.9 °C31 July 1986	26.6 °C	1,931 mm	274
1985	37.0 °C24 October 1985	20.5 °C4 September 1985	26.4 °C	2,393 mm	232
1984	36.5 °C17 December 1984	19.2 °C27 July 1984	26.8 °C	1,667 mm	283
1983	37.1 °C8 October 1983	20.8 °C30 July 1983	27.9 °C	993 mm	340
1982	38.1 °C20 December 1982	20.8 °C6 July 1982	27.3 °C	1,323 mm	307
1981	39.3 °C12 December 1981	21.1 °C6 August 1981	27.8 °C	957 mm	329
1980	37.0 °C5 December 1980	21.2 °C18 July 1980	27.3 °C	1,424 mm	307
1979	36.7 °C2 November 1979	20.3 °C29 July 1979	26.9 °C	1,597 mm	314
1978	35.8 °C26 November 1978	21.0 °C8 August 1978	26.7 °C	2,026 mm	294
1977	37.4 °C22 November 1977	19.6 °C5 August 1977	26.7 °C	2,190 mm	262
1976	35.9 °C23 September 1976	19.8 °C20 July 1976	26.5 °C	1,614 mm	275
1975	35.2 °C18 September 1975	19.8 °C28 July 1975	26.4 °C	1,587 mm	258
1974	35.8 °C25 October 1974	19.6 °C12 June 1974	26.0 °C	2,114 mm	224
1973	35.6 °C16 November 1973	20.0 °C2 August 1973	26.5 °C	2,173 mm	275
1972	37.4 °C21 November 1972	20.5 °C22 July 1972	26.9 °C	1,577 mm	303
1971	35.9 °C26 September 1971	19.3 °C11 July 1971	26.3 °C	1,864 mm	237
1970	35.8 °C22 August 1970	20.7 °C19 July 1970	27.0 °C	1,324 mm	296
1969	36.4 °C6 October 1969	20.7 °C25 August 1969	27.3 °C	1,013 mm	308
1968	36.1 °C18 October 1968	20.5 °C9 June 1968	26.5 °C	1,562 mm	242
1967	36.0 °C10 December 1967	20.5 °C17 February 1967	26.7 °C	1,666 mm	253
1966	38.6 °C25 October 1966	21.2 °C1 July 1966	27.2 °C	1,771 mm	244
1965	38.9 °C15 November 1965	20.6 °C7 July 1965	27.5 °C	1,051 mm	257
1964	37.7 °C9 November 1964	21.0 °C3 June 1964	27.0 °C	1,417 mm	227
1963	39.2 °C16 October 1963	20.3 °C17 June 1963	27.5 °C	1,321 mm	248
1962	38.9 °C3 October 1962	19.8 °C19 June 1962	27.2 °C	1,333 mm	254
1961	39.4 °C2 November 1961	20.9 °C12 February 1961	27.3 °C	1,343 mm	251
1960	39.1 °C20 October 1960	21.3 °C22 March 1960	27.6 °C	1,624 mm	262
1959	38.5 °C16 October 1959	20.7 °C7 July 1959	27.3 °C	1,563 mm	240
1958	39.4 °C18 October 1958	21.6 °C25 July 1958	28.3 °C	1,107 mm	323
1957	39.3 °C5 November 1957	21.1 °C11 April 1957	27.6 °C	1,301 mm	255
1956	38.6 °C6 November 1956	20.9 °C16 March 1956	27.1 °C	1,241 mm	243
1955	39.0 °C9 October 1955	20.6 °C16 July 1955	27.1 °C	1,294 mm	244
1954	38.4 °C18 October 1954	21.0 °C25 July 1954	27.2 °C	1,071 mm	267
1953	38.9 °C3 November 1953	20.9 °C14 July 1953	27.3 °C	1,147 mm	258
1952	38.2 °C9 October 1952	21.2 °C23 June 1952	27.2 °C	1,760 mm	259
1951	38.3 °C7 October 1951	21.1 °C21 July 1951	27.8 °C	954 mm	306
1950	39.2 °C10 December 1950	21.2 °C11 August 1950	27.7 °C	1,188 mm	256
1949	39.2 °C10 October 1949	21.3 °C5 February 1949	27.3 °C	1,286 mm	251
1948	38.8 °C5 November 1948	21.2 °C10 February 1948	27.6 °C	1,178 mm	280
1947	38.8 °C10 October 1947	21.1 °C11 July 1947	27.1 °C	1,522 mm	265
1946	39.4 °C12 December 1946	21.0 °C23 June 1946	27.9 °C	828 mm	310
1945	38.7 °C10 November 1945	20.5 °C18 June 1945	27.3 °C	1,250 mm	265
1944	39.2 °C3 November 1944	21.3 °C31 May 1944	27.6 °C	1,666 mm	251
1943	38.6 °C24 October 1943	20.6 °C4 May 1943	26.7 °C	1,563 mm	229
1942	39.6 °C20 November 1942	20.7 °C9 July 1942	28.1 °C	943 mm	328
1941	39.9 °C18 October 1941	21.8 °C15 June 1941	28.5 °C	818 mm	327
1940	37.6 °C15 November 1940	20.2 °C25 March 1940	27.1 °C	1,279 mm	245

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

33.3 °C

+0.9 °C

Hot days (≥ 30 °C)

344 d/yr

+48

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1336 mm

-118 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	31.9 °C	+0.9 °C	344 mm	+109 mm
Feb	31.1 °C	+0.6 °C	285 mm	+22 mm
Mar	31.1 °C	+1.1 °C	321 mm	-1 mm
Apr	31.8 °C	+1.7 °C	161 mm	-99 mm
May	31.8 °C	+1.3 °C	91 mm	-36 mm
Jun	32.1 °C	+0.7 °C	19 mm	-17 mm
Jul	33.6 °C	+0.9 °C	10 mm	-5 mm
Aug	34.4 °C	+0.1 °C	3 mm	-4 mm
Sep	36.0 °C	+0.8 °C	2 mm	-7 mm
Oct	36.1 °C	+0.7 °C	8 mm	-9 mm
Nov	35.6 °C	+0.9 °C	8 mm	-35 mm
Dec	33.6 °C	+0.4 °C	84 mm	-37 mm

The year's extremes

Hottest day

38.8 °C

25 Nov 2025

Coldest day

21.0 °C

14 Jul 2025

Wettest day

82.1 mm

14 Feb 2025

Windiest day

20.4 km/h

19 May 2025

Strongest gust

47.2 km/h

14 Jun 2025

Hottest feels-like

41.8 °C

20 Oct 2025

Coldest feels-like

20.9 °C

14 Jul 2025

Sunniest day

12.0 h

1 Jan 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 Alto Alegre do Maranhão?

Alto Alegre do Maranhão has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 27.4 °C and it receives 1,454 mm of precipitation per year.

What is the hottest day ever recorded in Alto Alegre do Maranhão?

The hottest day measured in Alto Alegre do Maranhão between 1940 and 2025 was 24 October 2012, reaching 40.3 °C.

What is the coldest day in Alto Alegre do Maranhão?

The coldest day measured in Alto Alegre do Maranhão between 1940 and 2025 was 26 July 2024, at 19.0 °C.

Does it snow in Alto Alegre do Maranhão?

Almost never: Alto Alegre do Maranhão sees virtually no snow, with about 0 frost days per year.

Has the climate of Alto Alegre do Maranhão warmed?

Yes: Alto Alegre do Maranhão warmed by +0.7 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Alto Alegre do Maranhão?

The wettest day measured in Alto Alegre do Maranhão between 1940 and 2025 was 27 March 1997, with 199 mm of rain in 24 hours.

What was the windiest day in Alto Alegre do Maranhão?

The windiest day measured in Alto Alegre do Maranhão between 1940 and 2025 was 17 August 1991, with winds reaching 25.1 km/h.

What is the warmest month in Alto Alegre do Maranhão?

The warmest month in Alto Alegre do Maranhão is October (29.5 °C on average); the coldest is March (25.8 °C).

How much does it rain in Alto Alegre do Maranhão?

Alto Alegre do Maranhão receives on average 1,454 mm of precipitation per year, spread over about 164 rainy days.

Is it sunny in Alto Alegre do Maranhão?

Alto Alegre do Maranhão gets on average 10.7 hours of sunshine per day, roughly 3,905 hours per year over 1940-2025.

Are there tropical nights in Alto Alegre do Maranhão?

Yes: Alto Alegre do Maranhão has on average 364 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Alto Alegre do Maranhão?

In Alto Alegre do Maranhão, between 1940 and 2025, the highest apparent temperature reached 44.0 °C on 21 October 2015, and the lowest was 17.9 °C on 3 August 2001.

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