Parnaíba climate — normals and trends

Q: What is the climate of Parnaíba?

Parnaíba has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 27.6 °C and it receives 1,138 mm of precipitation per year.

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

The hottest day measured in Parnaíba between 1940 and 2025 was 12 September 1942, reaching 38.2 °C.

Q: What is the coldest day in Parnaíba?

The coldest day measured in Parnaíba between 1940 and 2025 was 4 July 1974, at 20.2 °C.

Q: Does it snow in Parnaíba?

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

Q: Has the climate of Parnaíba warmed?

Yes: Parnaíba warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Parnaíba?

The wettest day measured in Parnaíba between 1940 and 2025 was 28 March 1997, with 269 mm of rain in 24 hours.

Q: What was the windiest day in Parnaíba?

The windiest day measured in Parnaíba between 1940 and 2025 was 25 October 2012, with winds reaching 37.3 km/h.

Q: What is the warmest month in Parnaíba?

The warmest month in Parnaíba is November (28.5 °C on average); the coldest is March (26.4 °C).

Q: How much does it rain in Parnaíba?

Parnaíba receives on average 1,138 mm of precipitation per year, spread over about 143 rainy days.

Q: Is it sunny in Parnaíba?

Parnaíba gets on average 11.0 hours of sunshine per day, roughly 4,015 hours per year over 1940-2025.

Parnaíba (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 27.6 °C and it receives 1,138 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 November (28.5 °C on average) and the coldest is March (26.4 °C). Rainfall peaks in March.

Parnaíba averages 0 frost days, 290 hot days (≥ 30 °C) and 143 rainy days per year.

Parnaíba has warmed by +1.1 °C between 1940 and 2025, or +0.12 °C per decade. This trend is statistically significant.

The hottest day of the period reached 38.2 °C (on 12 September 1942) and the coldest 20.2 °C (on 4 July 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

ParnaíbaPiauí

coords: -2.90°, -41.78°
period: 1940–2025 · 86 yrs

AwTropical savannaWarmest monthNovemberColdest monthMarchWettest monthMarchDriest monthSeptember

Mean daily temperature

27.6°C

Average daily high

32.2°C

Average daily low

24.4°C

Annual rainfall

1,138mm

Sunshine / day

11.0h

Mean relative humidity

74%

Average peak wind

21.0km/h

Seasonal range

2.1°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

290 d/yr

Rainy days (≥ 1 mm)

143 d/yr

Annual snowfall

0.0 cm

Average feels-like high

35.6 °C

Average feels-like low

27.3 °C

Average peak gust

40.3 km/h

Tropical nights (≥ 20 °C)

364 d/yr

Solar radiation

21.1 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.1 °C

since 1940

+0.1 °C per decade · r² = 0.40 · 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

38.2 °C

12 September 1942

Coldest day

20.2 °C

4 July 1974

Wettest day

269 mm

28 March 1997

Windiest day

37.3 km/h

25 October 2012

Strongest gust

65.2 km/h

10 November 1996

Hottest feels-like

40.7 °C

5 April 1998

Coldest feels-like

20.7 °C

4 July 1974

Sunniest day

12.0 h

24 November 2016

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	37.4 °C3 October 2025	22.3 °C4 July 2025	28.1 °C	1,083 mm	333
2024	35.6 °C8 September 2024	22.0 °C14 July 2024	28.0 °C	1,315 mm	334
2023	36.3 °C20 September 2023	22.2 °C21 July 2023	27.7 °C	1,333 mm	317
2022	36.4 °C11 October 2022	21.4 °C15 June 2022	27.6 °C	1,475 mm	332
2021	36.4 °C23 August 2021	22.2 °C25 July 2021	28.0 °C	1,131 mm	333
2020	36.4 °C3 October 2020	21.7 °C5 August 2020	28.0 °C	1,350 mm	331
2019	35.9 °C12 October 2019	22.9 °C19 July 2019	28.0 °C	1,383 mm	304
2018	36.6 °C18 November 2018	22.3 °C13 February 2018	27.8 °C	1,329 mm	294
2017	37.0 °C25 October 2017	22.9 °C5 July 2017	28.2 °C	1,288 mm	313
2016	38.0 °C16 October 2016	23.5 °C1 July 2016	28.5 °C	668 mm	336
2015	36.5 °C13 October 2015	23.2 °C27 June 2015	28.3 °C	801 mm	331
2014	36.5 °C12 October 2014	22.9 °C12 June 2014	28.2 °C	870 mm	335
2013	37.3 °C13 January 2013	23.6 °C20 May 2013	28.7 °C	710 mm	357
2012	37.6 °C8 October 2012	22.3 °C30 July 2012	28.6 °C	565 mm	347
2011	37.5 °C5 December 2011	23.0 °C22 January 2011	27.9 °C	1,372 mm	299
2010	37.7 °C14 October 2010	23.5 °C28 July 2010	28.8 °C	647 mm	355
2009	36.7 °C4 October 2009	21.2 °C25 June 2009	27.6 °C	2,294 mm	267
2008	37.2 °C26 October 2008	22.8 °C23 June 2008	27.9 °C	1,366 mm	290
2007	36.3 °C28 August 2007	23.1 °C20 February 2007	28.2 °C	1,038 mm	322
2006	36.7 °C8 October 2006	22.3 °C24 June 2006	28.0 °C	975 mm	303
2005	37.5 °C18 December 2005	22.6 °C10 July 2005	28.3 °C	755 mm	332
2004	36.3 °C14 October 2004	22.6 °C5 July 2004	27.8 °C	1,194 mm	298
2003	36.1 °C16 October 2003	23.0 °C11 July 2003	27.8 °C	1,090 mm	284
2002	35.9 °C8 September 2002	23.1 °C25 August 2002	27.8 °C	1,173 mm	291
2001	36.0 °C31 August 2001	22.5 °C5 February 2001	27.5 °C	1,183 mm	290
2000	36.3 °C11 October 2000	22.4 °C4 June 2000	27.4 °C	1,220 mm	276
1999	36.0 °C17 August 1999	22.4 °C7 March 1999	27.5 °C	1,229 mm	271
1998	37.5 °C30 September 1998	23.6 °C11 January 1998	28.4 °C	653 mm	336
1997	37.0 °C6 October 1997	22.7 °C11 May 1997	27.9 °C	991 mm	329
1996	36.2 °C14 September 1996	22.5 °C31 May 1996	27.5 °C	1,481 mm	291
1995	36.7 °C2 December 1995	22.0 °C12 July 1995	27.5 °C	1,425 mm	282
1994	36.1 °C6 November 1994	22.7 °C12 July 1994	27.4 °C	1,111 mm	264
1993	36.8 °C28 October 1993	22.6 °C18 July 1993	28.3 °C	536 mm	333
1992	36.1 °C14 November 1992	22.4 °C22 July 1992	27.8 °C	614 mm	323
1991	35.7 °C11 October 1991	22.1 °C15 August 1991	27.4 °C	1,043 mm	290
1990	37.3 °C1 October 1990	22.9 °C1 January 1990	28.0 °C	687 mm	332
1989	37.1 °C29 October 1989	22.6 °C7 July 1989	27.4 °C	1,284 mm	264
1988	37.3 °C20 October 1988	22.4 °C22 July 1988	27.7 °C	1,563 mm	295
1987	37.5 °C30 December 1987	23.2 °C21 June 1987	28.2 °C	673 mm	328
1986	36.3 °C7 September 1986	22.1 °C16 June 1986	27.2 °C	1,443 mm	262
1985	36.6 °C8 September 1985	22.2 °C21 July 1985	27.0 °C	1,988 mm	232
1984	37.2 °C1 November 1984	22.2 °C26 June 1984	27.5 °C	1,475 mm	275
1983	37.0 °C28 October 1983	22.8 °C26 July 1983	28.3 °C	500 mm	346
1982	37.0 °C29 December 1982	23.1 °C9 August 1982	27.6 °C	831 mm	307
1981	35.9 °C13 September 1981	22.4 °C6 August 1981	27.8 °C	780 mm	326
1980	36.7 °C19 October 1980	22.5 °C6 July 1980	27.7 °C	1,277 mm	320
1979	36.7 °C11 September 1979	22.5 °C26 February 1979	27.8 °C	945 mm	314
1978	36.2 °C2 October 1978	22.2 °C27 August 1978	27.5 °C	1,303 mm	308
1977	35.3 °C15 September 1977	21.6 °C22 July 1977	27.2 °C	1,169 mm	264
1976	36.5 °C3 September 1976	22.2 °C16 April 1976	27.2 °C	1,196 mm	281
1975	34.8 °C24 September 1975	20.4 °C27 July 1975	26.9 °C	1,629 mm	242
1974	35.3 °C18 November 1974	20.2 °C4 July 1974	26.6 °C	2,018 mm	203
1973	35.6 °C12 November 1973	21.9 °C20 January 1973	27.2 °C	1,967 mm	278
1972	35.9 °C16 November 1972	22.4 °C18 February 1972	27.3 °C	1,014 mm	291
1971	36.3 °C26 September 1971	22.0 °C18 July 1971	26.8 °C	1,572 mm	241
1970	36.3 °C1 August 1970	22.3 °C19 July 1970	27.5 °C	945 mm	317
1969	35.3 °C11 September 1969	22.9 °C27 July 1969	27.4 °C	1,008 mm	298
1968	35.6 °C28 August 1968	21.0 °C4 July 1968	26.9 °C	1,519 mm	257
1967	36.3 °C1 October 1967	22.0 °C12 March 1967	26.8 °C	1,858 mm	258
1966	37.4 °C30 September 1966	22.7 °C7 June 1966	27.3 °C	1,115 mm	265
1965	36.9 °C14 September 1965	22.5 °C23 March 1965	27.0 °C	862 mm	249
1964	36.4 °C19 September 1964	22.5 °C21 October 1964	26.8 °C	1,528 mm	207
1963	37.2 °C3 September 1963	22.7 °C10 March 1963	27.1 °C	1,411 mm	230
1962	36.3 °C29 August 1962	22.7 °C13 February 1962	27.1 °C	1,122 mm	248
1961	37.2 °C4 October 1961	22.5 °C14 February 1961	27.1 °C	1,555 mm	232
1960	36.6 °C30 October 1960	22.6 °C22 March 1960	27.2 °C	1,231 mm	252
1959	36.4 °C8 September 1959	22.4 °C21 February 1959	27.0 °C	1,344 mm	231
1958	37.7 °C23 August 1958	23.2 °C19 October 1958	28.0 °C	423 mm	353
1957	37.1 °C31 October 1957	22.2 °C26 January 1957	27.1 °C	1,376 mm	244
1956	36.8 °C4 October 1956	22.6 °C9 February 1956	27.3 °C	767 mm	274
1955	37.3 °C22 September 1955	22.3 °C26 January 1955	27.1 °C	1,197 mm	258
1954	36.9 °C19 September 1954	22.8 °C12 March 1954	27.3 °C	954 mm	268
1953	36.9 °C2 September 1953	23.0 °C24 February 1953	27.4 °C	1,046 mm	277
1952	37.1 °C7 October 1952	22.8 °C8 September 1952	27.1 °C	1,271 mm	244
1951	37.5 °C14 September 1951	22.9 °C1 June 1951	27.8 °C	511 mm	328
1950	36.6 °C10 December 1950	22.6 °C20 March 1950	27.1 °C	1,265 mm	244
1949	37.0 °C9 November 1949	22.8 °C27 March 1949	27.1 °C	1,356 mm	244
1948	37.0 °C4 November 1948	22.8 °C22 January 1948	27.3 °C	1,025 mm	273
1947	37.5 °C6 October 1947	22.7 °C22 March 1947	27.2 °C	1,120 mm	257
1946	37.5 °C13 December 1946	22.7 °C5 January 1946	27.6 °C	704 mm	304
1945	36.8 °C8 September 1945	22.4 °C9 February 1945	27.3 °C	917 mm	287
1944	37.7 °C20 September 1944	22.4 °C13 March 1944	27.3 °C	1,442 mm	249
1943	36.7 °C1 September 1943	22.4 °C8 March 1943	27.1 °C	763 mm	270
1942	38.2 °C12 September 1942	22.9 °C19 October 1942	28.0 °C	391 mm	342
1941	36.8 °C14 October 1941	22.6 °C23 July 1941	27.8 °C	575 mm	326
1940	36.2 °C3 October 1940	22.3 °C24 March 1940	27.1 °C	1,250 mm	232

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

32.9 °C

+0.7 °C

Hot days (≥ 30 °C)

333 d/yr

+43

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1083 mm

-55 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	31.3 °C	+0.1 °C	385 mm	+248 mm
Feb	30.9 °C	+0.7 °C	158 mm	-27 mm
Mar	30.5 °C	+0.8 °C	285 mm	+3 mm
Apr	30.7 °C	+0.8 °C	162 mm	-96 mm
May	31.5 °C	+0.9 °C	36 mm	-127 mm
Jun	32.0 °C	+0.4 °C	19 mm	-18 mm
Jul	33.7 °C	+0.8 °C	6 mm	-10 mm
Aug	34.6 °C	+0.4 °C	6 mm	+3 mm
Sep	35.8 °C	+1.2 °C	0 mm	-2 mm
Oct	35.9 °C	+1.4 °C	1 mm	-3 mm
Nov	34.2 °C	+0.1 °C	2 mm	-7 mm
Dec	33.0 °C	-0.1 °C	24 mm	-19 mm

The year's extremes

Hottest day

37.4 °C

3 Oct 2025

Coldest day

22.3 °C

4 Jul 2025

Wettest day

131.2 mm

15 Jan 2025

Windiest day

31.8 km/h

23 Sep 2025

Strongest gust

56.2 km/h

23 Nov 2025

Hottest feels-like

40.5 °C

17 Mar 2025

Coldest feels-like

24.4 °C

4 Jul 2025

Sunniest day

12.0 h

4 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 Parnaíba?

Parnaíba has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 27.6 °C and it receives 1,138 mm of precipitation per year.

What is the hottest day ever recorded in Parnaíba?

The hottest day measured in Parnaíba between 1940 and 2025 was 12 September 1942, reaching 38.2 °C.

What is the coldest day in Parnaíba?

The coldest day measured in Parnaíba between 1940 and 2025 was 4 July 1974, at 20.2 °C.

Does it snow in Parnaíba?

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

Has the climate of Parnaíba warmed?

Yes: Parnaíba warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Parnaíba?

The wettest day measured in Parnaíba between 1940 and 2025 was 28 March 1997, with 269 mm of rain in 24 hours.

What was the windiest day in Parnaíba?

The windiest day measured in Parnaíba between 1940 and 2025 was 25 October 2012, with winds reaching 37.3 km/h.

What is the warmest month in Parnaíba?

The warmest month in Parnaíba is November (28.5 °C on average); the coldest is March (26.4 °C).

How much does it rain in Parnaíba?

Parnaíba receives on average 1,138 mm of precipitation per year, spread over about 143 rainy days.

Is it sunny in Parnaíba?

Parnaíba gets on average 11.0 hours of sunshine per day, roughly 4,015 hours per year over 1940-2025.

Are there tropical nights in Parnaíba?

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

What was the most extreme apparent temperature in Parnaíba?

In Parnaíba, between 1940 and 2025, the highest apparent temperature reached 40.7 °C on 5 April 1998, and the lowest was 20.7 °C on 4 July 1974.

Compare Parnaíba with another city

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

Nearby cities

The climate around Parnaíba

Other cities — Brazil

All cities in Brazil →