Aldeias Altas climate — normals and trends

Q: What is the climate of Aldeias Altas?

Aldeias Altas has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 27.8 °C and it receives 1,321 mm of precipitation per year.

Q: What is the hottest day ever recorded in Aldeias Altas?

The hottest day measured in Aldeias Altas between 1940 and 2025 was 24 October 2012, reaching 41.5 °C.

Q: What is the coldest day in Aldeias Altas?

The coldest day measured in Aldeias Altas between 1940 and 2025 was 26 July 2024, at 18.2 °C.

Q: Does it snow in Aldeias Altas?

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

Q: Has the climate of Aldeias Altas warmed?

Yes: Aldeias Altas warmed by +0.8 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Aldeias Altas?

The wettest day measured in Aldeias Altas between 1940 and 2025 was 28 December 2005, with 187 mm of rain in 24 hours.

Q: What was the windiest day in Aldeias Altas?

The windiest day measured in Aldeias Altas between 1940 and 2025 was 16 August 1991, with winds reaching 29.1 km/h.

Q: What is the warmest month in Aldeias Altas?

The warmest month in Aldeias Altas is October (30.1 °C on average); the coldest is March (25.8 °C).

Q: How much does it rain in Aldeias Altas?

Aldeias Altas receives on average 1,321 mm of precipitation per year, spread over about 149 rainy days.

Q: Is it sunny in Aldeias Altas?

Aldeias Altas gets on average 10.6 hours of sunshine per day, roughly 3,869 hours per year over 1940-2025.

Aldeias Altas (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 27.8 °C and it receives 1,321 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 (30.1 °C on average) and the coldest is March (25.8 °C). Rainfall peaks in March.

Aldeias Altas averages 0 frost days, 305 hot days (≥ 30 °C) and 149 rainy days per year.

Aldeias Altas has warmed by +0.8 °C between 1940 and 2025, or +0.09 °C per decade. This trend is statistically significant.

The hottest day of the period reached 41.5 °C (on 24 October 2012) and the coldest 18.2 °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

Aldeias AltasMaranhão

coords: -4.63°, -43.47°
period: 1940–2025 · 86 yrs

AwTropical savannaWarmest monthOctoberColdest monthMarchWettest monthMarchDriest monthAugust

Mean daily temperature

27.8°C

Average daily high

33.0°C

Average daily low

23.3°C

Annual rainfall

1,321mm

Sunshine / day

10.6h

Mean relative humidity

70%

Average peak wind

12.1km/h

Seasonal range

4.3°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

305 d/yr

Rainy days (≥ 1 mm)

149 d/yr

Annual snowfall

0.0 cm

Average feels-like high

37.0 °C

Average feels-like low

26.8 °C

Average peak gust

31.1 km/h

Tropical nights (≥ 20 °C)

364 d/yr

Solar radiation

19.5 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+0.8 °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

41.5 °C

24 October 2012

Coldest day

18.2 °C

26 July 2024

Wettest day

187 mm

28 December 2005

Windiest day

29.1 km/h

16 August 1991

Strongest gust

59.0 km/h

16 August 1991

Hottest feels-like

44.8 °C

31 October 2012

Coldest feels-like

17.7 °C

1 September 2024

Sunniest day

12.0 h

2 January 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	39.6 °C25 November 2025	20.4 °C18 July 2025	28.6 °C	1,092 mm	348
2024	39.0 °C26 October 2024	18.2 °C26 July 2024	28.5 °C	1,190 mm	351
2023	39.4 °C14 October 2023	19.9 °C25 July 2023	28.0 °C	1,046 mm	327
2022	38.0 °C6 October 2022	18.9 °C28 August 2022	27.4 °C	1,401 mm	325
2021	37.9 °C5 September 2021	19.9 °C26 July 2021	27.9 °C	1,163 mm	336
2020	39.1 °C15 October 2020	18.5 °C13 August 2020	28.1 °C	1,478 mm	337
2019	39.2 °C28 October 2019	19.8 °C19 July 2019	28.4 °C	1,306 mm	343
2018	39.6 °C18 September 2018	20.4 °C21 July 2018	28.1 °C	1,446 mm	333
2017	40.2 °C5 December 2017	21.1 °C19 July 2017	28.7 °C	1,140 mm	341
2016	40.2 °C2 November 2016	19.2 °C22 July 2016	29.0 °C	1,154 mm	351
2015	41.0 °C2 December 2015	21.1 °C18 June 2015	28.8 °C	955 mm	348
2014	39.6 °C12 October 2014	20.2 °C28 July 2014	28.3 °C	1,210 mm	349
2013	39.3 °C5 October 2013	21.7 °C20 September 2013	28.8 °C	1,348 mm	352
2012	41.5 °C24 October 2012	21.0 °C6 July 2012	29.0 °C	1,134 mm	350
2011	40.5 °C25 September 2011	20.6 °C9 August 2011	28.1 °C	1,573 mm	331
2010	39.9 °C15 October 2010	19.8 °C27 June 2010	28.9 °C	1,151 mm	349
2009	39.0 °C28 November 2009	20.3 °C10 August 2009	28.0 °C	1,902 mm	318
2008	39.8 °C27 October 2008	19.4 °C23 June 2008	28.2 °C	1,273 mm	320
2007	39.9 °C8 November 2007	20.8 °C19 August 2007	28.7 °C	1,010 mm	344
2006	39.0 °C18 September 2006	20.8 °C2 June 2006	28.2 °C	1,399 mm	329
2005	40.9 °C20 November 2005	20.2 °C11 September 2005	28.5 °C	1,271 mm	349
2004	39.3 °C18 November 2004	19.3 °C9 June 2004	28.2 °C	1,310 mm	331
2003	38.4 °C19 October 2003	20.1 °C16 July 2003	27.9 °C	1,317 mm	334
2002	39.2 °C22 October 2002	21.1 °C21 July 2002	27.9 °C	1,398 mm	327
2001	38.7 °C31 October 2001	20.2 °C9 June 2001	27.4 °C	1,149 mm	314
2000	38.8 °C29 November 2000	20.5 °C5 June 2000	27.4 °C	1,371 mm	328
1999	39.0 °C10 November 1999	19.7 °C4 July 1999	27.4 °C	1,597 mm	309
1998	39.7 °C7 October 1998	21.1 °C5 July 1998	28.5 °C	1,250 mm	337
1997	39.7 °C11 October 1997	19.9 °C16 June 1997	27.8 °C	1,379 mm	326
1996	38.7 °C4 November 1996	19.9 °C4 July 1996	27.5 °C	1,851 mm	304
1995	39.2 °C16 October 1995	20.7 °C13 July 1995	27.4 °C	1,787 mm	306
1994	38.4 °C17 December 1994	20.4 °C2 July 1994	27.5 °C	1,509 mm	308
1993	38.5 °C2 November 1993	20.7 °C30 July 1993	28.2 °C	1,269 mm	331
1992	39.5 °C6 January 1992	19.2 °C19 July 1992	28.4 °C	986 mm	331
1991	38.5 °C9 December 1991	20.4 °C13 August 1991	27.9 °C	1,401 mm	329
1990	37.7 °C14 November 1990	21.4 °C5 March 1990	27.8 °C	855 mm	338
1989	37.1 °C29 October 1989	20.8 °C1 September 1989	27.0 °C	1,715 mm	288
1988	37.7 °C10 October 1988	19.6 °C23 September 1988	27.5 °C	1,614 mm	315
1987	39.3 °C6 November 1987	21.4 °C14 August 1987	28.3 °C	1,396 mm	336
1986	37.8 °C18 December 1986	20.4 °C23 July 1986	27.1 °C	1,536 mm	289
1985	37.7 °C22 October 1985	19.8 °C25 June 1985	26.7 °C	2,221 mm	248
1984	37.8 °C22 November 1984	20.0 °C27 July 1984	27.3 °C	1,561 mm	302
1983	38.7 °C3 November 1983	19.9 °C30 July 1983	28.4 °C	936 mm	342
1982	39.0 °C17 November 1982	20.4 °C25 August 1982	27.8 °C	1,131 mm	315
1981	39.4 °C12 December 1981	20.8 °C22 June 1981	28.2 °C	1,007 mm	333
1980	38.1 °C9 October 1980	21.5 °C2 March 1980	27.6 °C	1,441 mm	314
1979	37.8 °C7 October 1979	20.3 °C28 July 1979	27.1 °C	1,592 mm	313
1978	37.2 °C26 November 1978	20.5 °C7 June 1978	27.0 °C	1,852 mm	314
1977	38.7 °C22 November 1977	18.8 °C5 August 1977	27.1 °C	1,952 mm	288
1976	37.2 °C23 September 1976	19.3 °C15 July 1976	26.8 °C	1,651 mm	304
1975	36.5 °C14 October 1975	19.6 °C25 July 1975	26.6 °C	1,534 mm	279
1974	35.9 °C7 October 1974	19.1 °C12 June 1974	26.2 °C	2,032 mm	250
1973	37.6 °C8 October 1973	19.3 °C20 January 1973	26.9 °C	1,948 mm	296
1972	37.8 °C23 October 1972	20.5 °C21 July 1972	27.2 °C	1,549 mm	314
1971	36.9 °C26 September 1971	20.1 °C25 June 1971	26.6 °C	1,658 mm	264
1970	37.1 °C27 September 1970	20.4 °C19 July 1970	27.5 °C	1,134 mm	320
1969	37.4 °C6 October 1969	19.5 °C25 August 1969	27.5 °C	923 mm	330
1968	37.0 °C18 October 1968	19.2 °C27 July 1968	26.7 °C	1,350 mm	249
1967	36.5 °C19 October 1967	20.1 °C15 July 1967	26.8 °C	1,530 mm	267
1966	38.7 °C1 October 1966	21.1 °C23 August 1966	27.5 °C	1,526 mm	261
1965	39.5 °C15 November 1965	19.2 °C15 July 1965	27.9 °C	1,001 mm	284
1964	38.7 °C9 November 1964	20.2 °C3 June 1964	27.3 °C	1,278 mm	227
1963	39.5 °C16 October 1963	19.7 °C17 June 1963	27.7 °C	1,169 mm	254
1962	39.2 °C20 October 1962	19.3 °C19 June 1962	27.5 °C	981 mm	261
1961	39.5 °C2 November 1961	20.5 °C8 February 1961	27.6 °C	1,192 mm	247
1960	40.0 °C8 December 1960	21.2 °C21 March 1960	28.0 °C	1,389 mm	270
1959	38.9 °C14 October 1959	18.6 °C7 July 1959	27.6 °C	1,397 mm	243
1958	40.0 °C18 October 1958	20.9 °C4 March 1958	28.7 °C	885 mm	335
1957	39.6 °C5 November 1957	20.0 °C29 July 1957	28.0 °C	1,211 mm	263
1956	38.9 °C28 October 1956	21.0 °C10 February 1956	27.4 °C	1,164 mm	256
1955	39.2 °C8 October 1955	20.1 °C9 February 1955	27.7 °C	1,124 mm	261
1954	38.8 °C18 October 1954	19.6 °C9 September 1954	27.6 °C	1,009 mm	286
1953	39.1 °C7 December 1953	19.2 °C12 July 1953	27.7 °C	892 mm	281
1952	38.6 °C26 November 1952	19.7 °C26 June 1952	27.6 °C	1,542 mm	263
1951	39.0 °C8 December 1951	21.1 °C21 July 1951	28.1 °C	851 mm	311
1950	39.3 °C29 November 1950	20.6 °C26 May 1950	28.1 °C	1,121 mm	266
1949	39.8 °C10 October 1949	20.7 °C3 June 1949	27.6 °C	1,185 mm	251
1948	38.9 °C5 November 1948	20.9 °C22 January 1948	27.9 °C	1,061 mm	275
1947	39.2 °C10 October 1947	21.3 °C30 March 1947	27.3 °C	1,513 mm	255
1946	39.6 °C12 December 1946	20.1 °C23 June 1946	28.3 °C	765 mm	315
1945	39.7 °C10 November 1945	19.3 °C24 June 1945	27.5 °C	940 mm	271
1944	39.1 °C1 October 1944	20.4 °C27 August 1944	27.8 °C	1,778 mm	258
1943	39.1 °C24 October 1943	20.2 °C16 June 1943	26.8 °C	1,397 mm	240
1942	39.5 °C21 November 1942	20.7 °C14 May 1942	28.5 °C	860 mm	325
1941	40.0 °C18 October 1941	20.4 °C1 June 1941	28.7 °C	845 mm	330
1940	38.0 °C30 December 1940	20.5 °C7 July 1940	27.4 °C	1,216 mm	253

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

34.2 °C

+1.2 °C

Hot days (≥ 30 °C)

348 d/yr

+43

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1092 mm

-229 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	31.9 °C	+0.6 °C	229 mm	+23 mm
Feb	31.6 °C	+1.0 °C	254 mm	+6 mm
Mar	31.0 °C	+0.8 °C	378 mm	+69 mm
Apr	32.4 °C	+2.1 °C	116 mm	-124 mm
May	33.2 °C	+2.1 °C	25 mm	-79 mm
Jun	33.6 °C	+1.2 °C	6 mm	-18 mm
Jul	34.8 °C	+1.2 °C	1 mm	-8 mm
Aug	35.8 °C	+0.7 °C	2 mm	-2 mm
Sep	37.5 °C	+1.3 °C	0 mm	-6 mm
Oct	37.6 °C	+1.3 °C	8 mm	-10 mm
Nov	36.7 °C	+1.4 °C	6 mm	-37 mm
Dec	33.8 °C	+0.2 °C	67 mm	-43 mm

The year's extremes

Hottest day

39.6 °C

25 Nov 2025

Coldest day

20.4 °C

18 Jul 2025

Wettest day

137.7 mm

17 Mar 2025

Windiest day

23.7 km/h

5 Sep 2025

Strongest gust

49.7 km/h

14 Jun 2025

Hottest feels-like

43.0 °C

20 Oct 2025

Coldest feels-like

20.8 °C

18 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 Aldeias Altas?

Aldeias Altas has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 27.8 °C and it receives 1,321 mm of precipitation per year.

What is the hottest day ever recorded in Aldeias Altas?

The hottest day measured in Aldeias Altas between 1940 and 2025 was 24 October 2012, reaching 41.5 °C.

What is the coldest day in Aldeias Altas?

The coldest day measured in Aldeias Altas between 1940 and 2025 was 26 July 2024, at 18.2 °C.

Does it snow in Aldeias Altas?

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

Has the climate of Aldeias Altas warmed?

Yes: Aldeias Altas warmed by +0.8 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Aldeias Altas?

The wettest day measured in Aldeias Altas between 1940 and 2025 was 28 December 2005, with 187 mm of rain in 24 hours.

What was the windiest day in Aldeias Altas?

The windiest day measured in Aldeias Altas between 1940 and 2025 was 16 August 1991, with winds reaching 29.1 km/h.

What is the warmest month in Aldeias Altas?

The warmest month in Aldeias Altas is October (30.1 °C on average); the coldest is March (25.8 °C).

How much does it rain in Aldeias Altas?

Aldeias Altas receives on average 1,321 mm of precipitation per year, spread over about 149 rainy days.

Is it sunny in Aldeias Altas?

Aldeias Altas gets on average 10.6 hours of sunshine per day, roughly 3,869 hours per year over 1940-2025.

Are there tropical nights in Aldeias Altas?

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

What was the most extreme apparent temperature in Aldeias Altas?

In Aldeias Altas, between 1940 and 2025, the highest apparent temperature reached 44.8 °C on 31 October 2012, and the lowest was 17.7 °C on 1 September 2024.

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