Demerval Lobão climate — normals and trends

Q: What is the climate of Demerval Lobão?

Demerval Lobão has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 27.9 °C and it receives 1,288 mm of precipitation per year.

Q: What is the hottest day ever recorded in Demerval Lobão?

The hottest day measured in Demerval Lobão between 1940 and 2025 was 24 October 2012, reaching 41.3 °C.

Q: What is the coldest day in Demerval Lobão?

The coldest day measured in Demerval Lobão between 1940 and 2025 was 3 July 1946, at 18.4 °C.

Q: Does it snow in Demerval Lobão?

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

Q: Has the climate of Demerval Lobão warmed?

Yes: Demerval Lobão warmed by +0.9 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Demerval Lobão?

The wettest day measured in Demerval Lobão between 1940 and 2025 was 2 May 2009, with 237 mm of rain in 24 hours.

Q: What was the windiest day in Demerval Lobão?

The windiest day measured in Demerval Lobão between 1940 and 2025 was 16 July 1988, with winds reaching 25.7 km/h.

Q: What is the warmest month in Demerval Lobão?

The warmest month in Demerval Lobão is October (30.3 °C on average); the coldest is March (25.8 °C).

Q: How much does it rain in Demerval Lobão?

Demerval Lobão receives on average 1,288 mm of precipitation per year, spread over about 132 rainy days.

Q: Is it sunny in Demerval Lobão?

Demerval Lobão gets on average 10.7 hours of sunshine per day, roughly 3,905 hours per year over 1940-2025.

Demerval Lobão (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 27.9 °C and it receives 1,288 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 (30.3 °C on average) and the coldest is March (25.8 °C). Rainfall peaks in March.

Demerval Lobão averages 0 frost days, 313 hot days (≥ 30 °C) and 132 rainy days per year.

Demerval Lobão has warmed by +0.9 °C between 1940 and 2025, or +0.10 °C per decade. This trend is statistically significant.

The hottest day of the period reached 41.3 °C (on 24 October 2012) and the coldest 18.4 °C (on 3 July 1946).

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

Demerval LobãoPiauí

coords: -5.36°, -42.68°
period: 1940–2025 · 86 yrs

AwTropical savannaWarmest monthOctoberColdest monthMarchWettest monthMarchDriest monthAugust

Mean daily temperature

27.9°C

Average daily high

33.3°C

Average daily low

23.3°C

Annual rainfall

1,288mm

Sunshine / day

10.7h

Mean relative humidity

67%

Average peak wind

11.5km/h

Seasonal range

4.5°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

313 d/yr

Rainy days (≥ 1 mm)

132 d/yr

Annual snowfall

0.0 cm

Average feels-like high

37.2 °C

Average feels-like low

26.4 °C

Average peak gust

31.7 km/h

Tropical nights (≥ 20 °C)

364 d/yr

Solar radiation

20.0 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+0.9 °C

since 1940

+0.1 °C per decade · r² = 0.15 · 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

41.3 °C

24 October 2012

Coldest day

18.4 °C

3 July 1946

Wettest day

237 mm

2 May 2009

Windiest day

25.7 km/h

16 July 1988

Strongest gust

58.3 km/h

4 October 1958

Hottest feels-like

45.7 °C

28 October 2018

Coldest feels-like

16.9 °C

2 July 1946

Sunniest day

12.1 h

22 November 2009

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	39.7 °C14 October 2025	21.2 °C18 July 2025	28.6 °C	710 mm	346
2024	39.2 °C9 October 2024	18.8 °C26 July 2024	28.1 °C	1,378 mm	352
2023	40.2 °C31 October 2023	19.5 °C5 September 2023	27.9 °C	974 mm	339
2022	38.2 °C6 October 2022	19.7 °C28 August 2022	27.3 °C	1,145 mm	334
2021	38.6 °C22 September 2021	20.8 °C3 August 2021	28.0 °C	1,053 mm	339
2020	39.4 °C21 October 2020	19.3 °C27 July 2020	28.0 °C	1,327 mm	342
2019	39.5 °C28 October 2019	21.9 °C22 June 2019	28.6 °C	1,098 mm	347
2018	39.7 °C18 September 2018	21.2 °C25 June 2018	28.3 °C	1,470 mm	333
2017	40.2 °C5 December 2017	20.9 °C18 July 2017	28.8 °C	1,134 mm	342
2016	40.3 °C25 November 2016	20.5 °C23 July 2016	29.3 °C	1,202 mm	349
2015	40.5 °C2 December 2015	21.8 °C14 June 2015	29.1 °C	828 mm	345
2014	39.3 °C12 October 2014	20.8 °C1 August 2014	28.5 °C	943 mm	348
2013	39.4 °C5 October 2013	21.7 °C25 June 2013	29.0 °C	1,131 mm	350
2012	41.3 °C24 October 2012	21.1 °C6 August 2012	29.3 °C	929 mm	354
2011	40.3 °C25 September 2011	20.6 °C19 July 2011	28.2 °C	1,380 mm	331
2010	40.3 °C4 October 2010	21.3 °C22 June 2010	29.2 °C	909 mm	352
2009	39.4 °C10 December 2009	20.9 °C26 July 2009	28.0 °C	2,145 mm	318
2008	39.8 °C27 October 2008	19.8 °C23 June 2008	28.3 °C	1,342 mm	323
2007	39.8 °C6 November 2007	20.6 °C28 August 2007	28.8 °C	1,099 mm	344
2006	39.1 °C9 October 2006	21.5 °C2 June 2006	28.2 °C	1,597 mm	338
2005	41.2 °C20 November 2005	20.7 °C12 September 2005	28.7 °C	1,149 mm	345
2004	39.4 °C18 November 2004	20.7 °C9 June 2004	28.2 °C	1,302 mm	334
2003	38.3 °C31 October 2003	19.4 °C11 July 2003	28.1 °C	1,248 mm	338
2002	39.5 °C23 October 2002	21.0 °C8 August 2002	28.2 °C	1,214 mm	338
2001	39.4 °C22 October 2001	20.6 °C29 July 2001	27.6 °C	1,008 mm	320
2000	38.6 °C6 December 2000	20.4 °C12 August 2000	27.6 °C	1,225 mm	325
1999	38.5 °C23 October 1999	19.6 °C11 July 1999	27.3 °C	1,626 mm	312
1998	40.2 °C7 October 1998	21.0 °C25 June 1998	28.6 °C	1,066 mm	346
1997	39.5 °C1 October 1997	19.9 °C12 June 1997	27.7 °C	1,226 mm	327
1996	38.4 °C11 November 1996	20.0 °C26 June 1996	27.6 °C	1,757 mm	317
1995	39.0 °C13 October 1995	20.0 °C14 August 1995	27.3 °C	1,816 mm	308
1994	38.1 °C22 October 1994	20.5 °C23 July 1994	27.6 °C	1,523 mm	317
1993	38.7 °C17 September 1993	21.2 °C6 June 1993	28.4 °C	981 mm	339
1992	39.2 °C6 January 1992	20.0 °C19 July 1992	28.5 °C	1,236 mm	340
1991	38.4 °C1 October 1991	21.0 °C20 July 1991	27.9 °C	1,351 mm	333
1990	38.2 °C13 October 1990	21.5 °C10 July 1990	28.0 °C	670 mm	343
1989	38.5 °C5 October 1989	20.2 °C10 September 1989	27.2 °C	1,709 mm	295
1988	39.0 °C20 October 1988	20.6 °C3 August 1988	27.7 °C	1,599 mm	319
1987	39.8 °C28 November 1987	21.4 °C15 February 1987	28.5 °C	1,233 mm	337
1986	38.9 °C18 December 1986	19.6 °C24 July 1986	27.2 °C	1,724 mm	301
1985	38.4 °C22 October 1985	19.7 °C25 June 1985	26.7 °C	2,930 mm	258
1984	39.0 °C13 December 1984	20.4 °C13 January 1984	27.4 °C	1,542 mm	307
1983	39.0 °C23 October 1983	20.8 °C3 July 1983	28.8 °C	831 mm	345
1982	39.1 °C17 November 1982	20.8 °C19 February 1982	27.9 °C	1,144 mm	322
1981	39.3 °C13 December 1981	21.3 °C21 July 1981	28.3 °C	962 mm	335
1980	38.2 °C23 September 1980	21.2 °C8 March 1980	27.8 °C	1,806 mm	321
1979	38.3 °C10 October 1979	19.8 °C21 July 1979	27.1 °C	2,184 mm	317
1978	37.5 °C2 October 1978	20.0 °C7 June 1978	27.3 °C	1,476 mm	323
1977	38.4 °C22 November 1977	19.6 °C14 July 1977	27.2 °C	1,891 mm	298
1976	37.1 °C23 September 1976	20.0 °C16 July 1976	27.0 °C	1,366 mm	312
1975	37.2 °C14 October 1975	19.2 °C26 July 1975	26.7 °C	1,557 mm	286
1974	36.3 °C6 October 1974	19.3 °C12 June 1974	26.3 °C	2,453 mm	252
1973	37.8 °C8 October 1973	19.5 °C20 January 1973	27.0 °C	2,053 mm	305
1972	38.1 °C23 October 1972	20.7 °C4 August 1972	27.4 °C	1,463 mm	318
1971	37.1 °C11 October 1971	20.0 °C11 September 1971	26.7 °C	1,633 mm	284
1970	37.5 °C14 October 1970	19.7 °C27 May 1970	27.6 °C	972 mm	336
1969	37.5 °C14 October 1969	20.0 °C17 August 1969	27.6 °C	900 mm	330
1968	37.4 °C18 October 1968	20.2 °C26 July 1968	26.7 °C	1,150 mm	263
1967	36.9 °C23 October 1967	19.6 °C13 September 1967	26.7 °C	1,803 mm	278
1966	38.7 °C1 October 1966	20.8 °C17 April 1966	27.5 °C	1,357 mm	273
1965	39.5 °C15 November 1965	19.4 °C7 September 1965	28.0 °C	886 mm	294
1964	38.9 °C9 November 1964	20.4 °C3 June 1964	27.2 °C	1,287 mm	249
1963	40.1 °C17 October 1963	20.1 °C17 June 1963	27.7 °C	1,169 mm	261
1962	39.4 °C20 October 1962	19.1 °C7 September 1962	27.6 °C	865 mm	280
1961	39.5 °C24 November 1961	19.8 °C25 August 1961	27.6 °C	1,241 mm	262
1960	40.1 °C8 December 1960	19.9 °C11 July 1960	28.0 °C	1,292 mm	289
1959	39.3 °C14 October 1959	18.8 °C14 August 1959	27.7 °C	1,120 mm	268
1958	40.1 °C18 October 1958	20.9 °C4 March 1958	28.9 °C	701 mm	345
1957	39.5 °C5 November 1957	19.6 °C7 June 1957	28.0 °C	1,516 mm	276
1956	39.1 °C28 October 1956	19.8 °C31 July 1956	27.5 °C	1,069 mm	277
1955	39.1 °C8 October 1955	20.2 °C31 August 1955	27.7 °C	891 mm	277
1954	38.7 °C18 October 1954	20.2 °C6 August 1954	27.6 °C	1,097 mm	311
1953	39.6 °C3 November 1953	20.0 °C24 August 1953	27.9 °C	860 mm	302
1952	39.2 °C29 October 1952	19.1 °C15 June 1952	27.6 °C	1,400 mm	281
1951	39.2 °C29 September 1951	21.1 °C3 May 1951	28.1 °C	740 mm	320
1950	39.1 °C29 November 1950	19.7 °C12 July 1950	28.0 °C	1,112 mm	286
1949	39.6 °C10 October 1949	20.4 °C3 August 1949	27.6 °C	1,235 mm	271
1948	39.6 °C10 November 1948	19.8 °C16 June 1948	27.9 °C	988 mm	291
1947	39.2 °C10 October 1947	20.7 °C7 December 1947	27.2 °C	1,884 mm	279
1946	39.3 °C31 October 1946	18.4 °C3 July 1946	28.2 °C	751 mm	327
1945	39.3 °C10 November 1945	18.9 °C15 June 1945	27.4 °C	918 mm	287
1944	39.1 °C22 October 1944	20.9 °C23 December 1944	27.6 °C	1,595 mm	266
1943	39.5 °C24 October 1943	19.9 °C5 May 1943	26.9 °C	1,274 mm	261
1942	39.8 °C21 November 1942	20.1 °C13 May 1942	28.8 °C	636 mm	344
1941	40.1 °C23 October 1941	20.1 °C5 July 1941	28.9 °C	838 mm	339
1940	38.7 °C1 November 1940	20.4 °C28 July 1940	27.3 °C	1,474 mm	273

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

34.3 °C

+1.0 °C

Hot days (≥ 30 °C)

346 d/yr

+33

Frost days (< 0 °C)

0 d/yr

Annual rainfall

710 mm

-578 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	31.9 °C	+0.3 °C	273 mm	+55 mm
Feb	31.9 °C	+1.1 °C	127 mm	-137 mm
Mar	31.1 °C	+0.7 °C	170 mm	-143 mm
Apr	32.5 °C	+2.0 °C	42 mm	-185 mm
May	34.1 °C	+2.7 °C	6 mm	-80 mm
Jun	33.7 °C	+0.9 °C	2 mm	-12 mm
Jul	34.9 °C	+1.2 °C	0 mm	-6 mm
Aug	35.8 °C	+0.7 °C	3 mm	+1 mm
Sep	37.5 °C	+1.1 °C	0 mm	-4 mm
Oct	37.5 °C	+0.7 °C	22 mm	+5 mm
Nov	36.9 °C	+1.1 °C	8 mm	-30 mm
Dec	34.2 °C	+0.2 °C	58 mm	-42 mm

The year's extremes

Hottest day

39.7 °C

14 Oct 2025

Coldest day

21.2 °C

18 Jul 2025

Wettest day

57.5 mm

14 Jan 2025

Windiest day

21.1 km/h

14 Jun 2025

Strongest gust

50.0 km/h

14 Jun 2025

Hottest feels-like

42.9 °C

20 Oct 2025

Coldest feels-like

19.6 °C

27 Jul 2025

Sunniest day

12.1 h

14 Nov 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 Demerval Lobão?

Demerval Lobão has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 27.9 °C and it receives 1,288 mm of precipitation per year.

What is the hottest day ever recorded in Demerval Lobão?

The hottest day measured in Demerval Lobão between 1940 and 2025 was 24 October 2012, reaching 41.3 °C.

What is the coldest day in Demerval Lobão?

The coldest day measured in Demerval Lobão between 1940 and 2025 was 3 July 1946, at 18.4 °C.

Does it snow in Demerval Lobão?

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

Has the climate of Demerval Lobão warmed?

Yes: Demerval Lobão warmed by +0.9 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Demerval Lobão?

The wettest day measured in Demerval Lobão between 1940 and 2025 was 2 May 2009, with 237 mm of rain in 24 hours.

What was the windiest day in Demerval Lobão?

The windiest day measured in Demerval Lobão between 1940 and 2025 was 16 July 1988, with winds reaching 25.7 km/h.

What is the warmest month in Demerval Lobão?

The warmest month in Demerval Lobão is October (30.3 °C on average); the coldest is March (25.8 °C).

How much does it rain in Demerval Lobão?

Demerval Lobão receives on average 1,288 mm of precipitation per year, spread over about 132 rainy days.

Is it sunny in Demerval Lobão?

Demerval Lobão gets on average 10.7 hours of sunshine per day, roughly 3,905 hours per year over 1940-2025.

Are there tropical nights in Demerval Lobão?

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

What was the most extreme apparent temperature in Demerval Lobão?

In Demerval Lobão, between 1940 and 2025, the highest apparent temperature reached 45.7 °C on 28 October 2018, and the lowest was 16.9 °C on 2 July 1946.

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