Barra do Piraí climate — normals and trends

Q: What is the climate of Barra do Piraí?

Barra do Piraí has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 21.4 °C and it receives 1,618 mm of precipitation per year.

Q: What is the hottest day ever recorded in Barra do Piraí?

The hottest day measured in Barra do Piraí between 1940 and 2025 was 28 September 1961, reaching 38.6 °C.

Q: What is the coldest day in Barra do Piraí?

The coldest day measured in Barra do Piraí between 1940 and 2025 was 1 June 1979, at 5.1 °C.

Q: Does it snow in Barra do Piraí?

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

Q: Has the climate of Barra do Piraí warmed?

Yes: Barra do Piraí warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Barra do Piraí?

The wettest day measured in Barra do Piraí between 1940 and 2025 was 11 March 1954, with 218 mm of rain in 24 hours.

Q: What was the windiest day in Barra do Piraí?

The windiest day measured in Barra do Piraí between 1940 and 2025 was 17 December 1989, with winds reaching 28.9 km/h.

Q: What is the warmest month in Barra do Piraí?

The warmest month in Barra do Piraí is February (24.3 °C on average); the coldest is July (18.1 °C).

Q: How much does it rain in Barra do Piraí?

Barra do Piraí receives on average 1,618 mm of precipitation per year, spread over about 174 rainy days.

Q: Is it sunny in Barra do Piraí?

Barra do Piraí gets on average 9.1 hours of sunshine per day, roughly 3,322 hours per year over 1940-2025.

Barra do Piraí (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 21.4 °C and it receives 1,618 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 February (24.3 °C on average) and the coldest is July (18.1 °C). Rainfall peaks in January.

Barra do Piraí averages 0 frost days, 68 hot days (≥ 30 °C) and 174 rainy days per year.

Barra do Piraí has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.

The hottest day of the period reached 38.6 °C (on 28 September 1961) and the coldest 5.1 °C (on 1 June 1979).

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

Barra do PiraíRio de Janeiro

coords: -22.47°, -43.83°
period: 1940–2025 · 86 yrs

AwTropical savannaWarmest monthFebruaryColdest monthJulyWettest monthJanuaryDriest monthJuly

Mean daily temperature

21.4°C

Average daily high

26.2°C

Average daily low

17.7°C

Annual rainfall

1,618mm

Sunshine / day

9.1h

Mean relative humidity

80%

Average peak wind

11.9km/h

Seasonal range

6.2°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

68 d/yr

Rainy days (≥ 1 mm)

174 d/yr

Annual snowfall

0.0 cm

Average feels-like high

28.7 °C

Average feels-like low

19.2 °C

Average peak gust

30.9 km/h

Tropical nights (≥ 20 °C)

102 d/yr

Solar radiation

16.3 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.7 °C

since 1940

+0.2 °C per decade · r² = 0.56 · 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

38.6 °C

28 September 1961

Coldest day

5.1 °C

1 June 1979

Wettest day

218 mm

11 March 1954

Windiest day

28.9 km/h

17 December 1989

Strongest gust

71.6 km/h

17 October 1998

Hottest feels-like

43.3 °C

17 February 1994

Coldest feels-like

3.0 °C

1 June 1979

Sunniest day

13.4 h

22 December 1944

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	35.9 °C17 February 2025	8.5 °C31 July 2025	21.7 °C	956 mm	92
2024	35.7 °C2 October 2024	7.4 °C14 August 2024	22.4 °C	1,303 mm	119
2023	38.2 °C18 November 2023	8.3 °C4 July 2023	22.2 °C	1,538 mm	117
2022	34.4 °C10 September 2022	8.8 °C16 June 2022	21.3 °C	1,680 mm	71
2021	35.7 °C14 September 2021	5.8 °C31 July 2021	21.1 °C	1,479 mm	74
2020	37.4 °C2 October 2020	7.2 °C27 May 2020	21.6 °C	1,639 mm	76
2019	36.2 °C18 September 2019	9.1 °C12 July 2019	22.5 °C	1,256 mm	105
2018	35.0 °C18 January 2018	9.0 °C22 May 2018	22.2 °C	1,437 mm	91
2017	33.7 °C17 December 2017	9.9 °C7 August 2017	21.9 °C	1,288 mm	94
2016	34.9 °C10 February 2016	7.0 °C15 June 2016	22.1 °C	1,481 mm	123
2015	36.6 °C24 September 2015	11.2 °C5 August 2015	22.7 °C	1,362 mm	115
2014	35.6 °C3 January 2014	9.0 °C29 April 2014	22.3 °C	912 mm	122
2013	36.4 °C12 November 2013	9.0 °C9 May 2013	21.6 °C	1,851 mm	76
2012	36.8 °C19 September 2012	9.7 °C27 September 2012	21.9 °C	1,312 mm	88
2011	34.2 °C28 January 2011	7.6 °C6 June 2011	21.4 °C	1,383 mm	87
2010	36.0 °C8 February 2010	8.4 °C8 June 2010	22.0 °C	1,505 mm	113
2009	34.8 °C19 November 2009	7.3 °C4 June 2009	22.0 °C	1,891 mm	94
2008	34.4 °C26 October 2008	8.6 °C15 July 2008	21.3 °C	1,930 mm	73
2007	35.1 °C1 November 2007	8.4 °C31 July 2007	22.1 °C	1,361 mm	104
2006	36.4 °C25 January 2006	8.9 °C6 September 2006	21.9 °C	1,408 mm	89
2005	36.7 °C14 October 2005	10.2 °C10 July 2005	22.1 °C	1,744 mm	76
2004	34.6 °C31 October 2004	9.2 °C11 August 2004	21.4 °C	1,557 mm	53
2003	36.6 °C16 December 2003	9.5 °C19 August 2003	22.0 °C	1,555 mm	100
2002	34.9 °C1 December 2002	10.6 °C3 September 2002	22.6 °C	1,331 mm	106
2001	33.7 °C11 February 2001	10.2 °C30 July 2001	22.0 °C	1,336 mm	94
2000	34.7 °C15 January 2000	5.8 °C18 July 2000	21.4 °C	1,300 mm	75
1999	35.9 °C2 February 1999	8.6 °C23 May 1999	20.9 °C	1,483 mm	61
1998	36.1 °C31 January 1998	10.1 °C12 July 1998	21.8 °C	1,613 mm	88
1997	35.6 °C9 September 1997	8.0 °C10 June 1997	21.9 °C	1,502 mm	119
1996	35.2 °C25 January 1996	8.7 °C13 July 1996	21.3 °C	1,961 mm	89
1995	36.4 °C17 January 1995	10.7 °C5 June 1995	21.9 °C	1,974 mm	101
1994	35.9 °C3 October 1994	5.9 °C27 June 1994	22.1 °C	1,630 mm	106
1993	35.9 °C7 September 1993	8.7 °C13 August 1993	22.1 °C	1,388 mm	99
1992	35.1 °C22 February 1992	9.2 °C25 August 1992	21.9 °C	1,626 mm	71
1991	33.0 °C26 November 1991	10.1 °C17 August 1991	21.7 °C	1,576 mm	60
1990	34.7 °C25 January 1990	9.1 °C19 May 1990	21.9 °C	1,512 mm	76
1989	33.1 °C22 February 1989	8.4 °C20 July 1989	21.3 °C	1,654 mm	41
1988	34.1 °C19 January 1988	5.6 °C6 June 1988	21.4 °C	1,718 mm	71
1987	34.2 °C9 January 1987	8.1 °C27 May 1987	21.9 °C	1,552 mm	78
1986	33.8 °C7 October 1986	9.2 °C13 July 1986	21.8 °C	1,525 mm	74
1985	33.5 °C27 August 1985	7.9 °C12 June 1985	21.3 °C	1,715 mm	43
1984	34.7 °C13 January 1984	9.5 °C27 August 1984	22.0 °C	1,316 mm	65
1983	34.8 °C26 February 1983	7.4 °C6 August 1983	21.6 °C	2,186 mm	47
1982	33.4 °C6 November 1982	10.3 °C6 May 1982	21.5 °C	1,693 mm	41
1981	34.0 °C29 September 1981	7.6 °C22 July 1981	21.2 °C	1,635 mm	53
1980	34.2 °C27 October 1980	9.4 °C18 June 1980	21.6 °C	1,428 mm	66
1979	33.1 °C18 November 1979	5.1 °C1 June 1979	20.9 °C	1,856 mm	51
1978	34.4 °C31 January 1978	7.2 °C2 June 1978	21.3 °C	1,527 mm	59
1977	35.0 °C28 February 1977	11.3 °C21 May 1977	22.1 °C	1,339 mm	81
1976	34.1 °C25 January 1976	8.1 °C16 August 1976	21.1 °C	1,939 mm	49
1975	34.1 °C9 December 1975	6.6 °C8 July 1975	21.1 °C	1,779 mm	53
1974	34.1 °C26 September 1974	8.2 °C16 June 1974	21.2 °C	1,425 mm	53
1973	36.1 °C11 February 1973	9.6 °C26 July 1973	21.8 °C	1,697 mm	74
1972	34.5 °C27 October 1972	9.2 °C23 June 1972	21.5 °C	1,705 mm	66
1971	34.2 °C25 January 1971	10.0 °C31 May 1971	21.1 °C	1,397 mm	67
1970	33.1 °C30 January 1970	10.5 °C13 August 1970	21.1 °C	1,154 mm	48
1969	35.0 °C9 January 1969	10.0 °C19 July 1969	21.3 °C	1,376 mm	53
1968	35.0 °C24 December 1968	9.4 °C29 June 1968	20.2 °C	990 mm	42
1967	33.9 °C12 October 1967	10.2 °C10 June 1967	21.4 °C	1,876 mm	43
1966	33.8 °C5 December 1966	9.6 °C23 September 1966	20.9 °C	1,942 mm	65
1965	33.4 °C21 December 1965	9.3 °C26 May 1965	20.7 °C	2,097 mm	39
1964	33.4 °C18 February 1964	6.8 °C29 July 1964	20.0 °C	1,827 mm	29
1963	36.0 °C14 October 1963	9.7 °C8 August 1963	21.2 °C	1,214 mm	81
1962	31.9 °C8 September 1962	8.3 °C26 August 1962	19.9 °C	2,321 mm	16
1961	38.6 °C28 September 1961	11.2 °C19 June 1961	21.7 °C	1,800 mm	89
1960	36.6 °C25 September 1960	8.7 °C15 July 1960	20.3 °C	1,813 mm	34
1959	33.2 °C7 September 1959	10.0 °C13 June 1959	21.2 °C	1,315 mm	66
1958	34.1 °C15 November 1958	8.6 °C22 September 1958	21.0 °C	1,628 mm	63
1957	34.0 °C19 October 1957	8.1 °C23 July 1957	20.7 °C	1,629 mm	38
1956	34.7 °C2 February 1956	8.7 °C12 July 1956	20.0 °C	1,361 mm	59
1955	34.5 °C1 October 1955	9.4 °C14 July 1955	20.6 °C	1,151 mm	66
1954	35.9 °C22 September 1954	9.3 °C30 August 1954	21.0 °C	2,297 mm	50
1953	33.2 °C30 January 1953	9.6 °C29 July 1953	20.9 °C	1,712 mm	45
1952	33.7 °C1 October 1952	10.1 °C17 July 1952	20.7 °C	1,861 mm	27
1951	35.3 °C19 November 1951	10.0 °C14 August 1951	20.5 °C	1,473 mm	59
1950	33.2 °C20 February 1950	8.2 °C14 July 1950	20.6 °C	1,804 mm	44
1949	32.6 °C18 March 1949	10.3 °C3 July 1949	20.2 °C	2,039 mm	26
1948	35.8 °C27 September 1948	9.6 °C30 August 1948	20.8 °C	1,367 mm	61
1947	34.7 °C8 January 1947	6.9 °C4 August 1947	20.3 °C	1,904 mm	34
1946	33.2 °C2 November 1946	9.6 °C30 July 1946	21.2 °C	2,193 mm	54
1945	33.4 °C13 November 1945	9.8 °C14 July 1945	21.0 °C	1,928 mm	46
1944	34.2 °C7 September 1944	8.8 °C13 July 1944	20.8 °C	1,958 mm	38
1943	31.9 °C19 January 1943	8.7 °C5 September 1943	19.7 °C	1,745 mm	13
1942	35.1 °C6 October 1942	6.9 °C26 June 1942	20.1 °C	1,514 mm	43
1941	34.3 °C12 January 1941	10.8 °C12 July 1941	20.9 °C	2,255 mm	37
1940	33.6 °C12 September 1940	10.8 °C28 September 1940	21.1 °C	2,480 mm	36

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

26.8 °C

+0.6 °C

Hot days (≥ 30 °C)

92 d/yr

+24

Frost days (< 0 °C)

0 d/yr

Annual rainfall

956 mm

-662 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	29.1 °C	+0.2 °C	236 mm	-41 mm
Feb	32.2 °C	+3.0 °C	29 mm	-186 mm
Mar	28.9 °C	+0.8 °C	123 mm	-80 mm
Apr	26.1 °C	-0.2 °C	118 mm	+18 mm
May	25.1 °C	+0.7 °C	19 mm	-37 mm
Jun	24.3 °C	+0.7 °C	25 mm	-8 mm
Jul	22.5 °C	-0.9 °C	11 mm	-20 mm
Aug	24.6 °C	-0.1 °C	12 mm	-24 mm
Sep	25.7 °C	+0.1 °C	42 mm	-30 mm
Oct	26.2 °C	0.0 °C	90 mm	-45 mm
Nov	26.7 °C	+0.3 °C	116 mm	-86 mm
Dec	30.2 °C	+2.7 °C	135 mm	-123 mm

The year's extremes

Hottest day

35.9 °C

17 Feb 2025

Coldest day

8.5 °C

31 Jul 2025

Wettest day

34.2 mm

2 Nov 2025

Windiest day

27.7 km/h

10 Dec 2025

Strongest gust

68.0 km/h

10 Dec 2025

Hottest feels-like

40.4 °C

17 Feb 2025

Coldest feels-like

7.2 °C

31 Jul 2025

Sunniest day

13.4 h

22 Dec 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 Barra do Piraí?

Barra do Piraí has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 21.4 °C and it receives 1,618 mm of precipitation per year.

What is the hottest day ever recorded in Barra do Piraí?

The hottest day measured in Barra do Piraí between 1940 and 2025 was 28 September 1961, reaching 38.6 °C.

What is the coldest day in Barra do Piraí?

The coldest day measured in Barra do Piraí between 1940 and 2025 was 1 June 1979, at 5.1 °C.

Does it snow in Barra do Piraí?

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

Has the climate of Barra do Piraí warmed?

Yes: Barra do Piraí warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Barra do Piraí?

The wettest day measured in Barra do Piraí between 1940 and 2025 was 11 March 1954, with 218 mm of rain in 24 hours.

What was the windiest day in Barra do Piraí?

The windiest day measured in Barra do Piraí between 1940 and 2025 was 17 December 1989, with winds reaching 28.9 km/h.

What is the warmest month in Barra do Piraí?

The warmest month in Barra do Piraí is February (24.3 °C on average); the coldest is July (18.1 °C).

How much does it rain in Barra do Piraí?

Barra do Piraí receives on average 1,618 mm of precipitation per year, spread over about 174 rainy days.

Is it sunny in Barra do Piraí?

Barra do Piraí gets on average 9.1 hours of sunshine per day, roughly 3,322 hours per year over 1940-2025.

Are there tropical nights in Barra do Piraí?

Yes: Barra do Piraí has on average 102 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Barra do Piraí?

In Barra do Piraí, between 1940 and 2025, the highest apparent temperature reached 43.3 °C on 17 February 1994, and the lowest was 3.0 °C on 1 June 1979.

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