Paty do Alferes climate — normals and trends

Q: What is the climate of Paty do Alferes?

Paty do Alferes has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 21.7 °C and it receives 1,610 mm of precipitation per year.

Q: What is the hottest day ever recorded in Paty do Alferes?

The hottest day measured in Paty do Alferes between 1940 and 2025 was 28 September 1961, reaching 39.1 °C.

Q: What is the coldest day in Paty do Alferes?

The coldest day measured in Paty do Alferes between 1940 and 2025 was 1 June 1979, at 5.7 °C.

Q: Does it snow in Paty do Alferes?

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

Q: Has the climate of Paty do Alferes warmed?

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

Q: What is the wettest day in Paty do Alferes?

The wettest day measured in Paty do Alferes between 1940 and 2025 was 30 November 1946, with 183 mm of rain in 24 hours.

Q: What was the windiest day in Paty do Alferes?

The windiest day measured in Paty do Alferes between 1940 and 2025 was 10 December 2025, with winds reaching 27.7 km/h.

Q: What is the warmest month in Paty do Alferes?

The warmest month in Paty do Alferes is February (24.7 °C on average); the coldest is July (18.5 °C).

Q: How much does it rain in Paty do Alferes?

Paty do Alferes receives on average 1,610 mm of precipitation per year, spread over about 173 rainy days.

Q: Is it sunny in Paty do Alferes?

Paty do Alferes gets on average 9.2 hours of sunshine per day, roughly 3,358 hours per year over 1940-2025.

Paty do Alferes (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 21.7 °C and it receives 1,610 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 (24.7 °C on average) and the coldest is July (18.5 °C). Rainfall peaks in January.

Paty do Alferes averages 0 frost days, 77 hot days (≥ 30 °C) and 173 rainy days per year.

Paty do Alferes 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 39.1 °C (on 28 September 1961) and the coldest 5.7 °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

Paty do AlferesRio de Janeiro

coords: -22.43°, -43.42°
period: 1940–2025 · 86 yrs

AwTropical savannaWarmest monthFebruaryColdest monthJulyWettest monthJanuaryDriest monthJuly

Mean daily temperature

21.7°C

Average daily high

26.5°C

Average daily low

18.1°C

Annual rainfall

1,610mm

Sunshine / day

9.2h

Mean relative humidity

80%

Average peak wind

10.8km/h

Seasonal range

6.2°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

77 d/yr

Rainy days (≥ 1 mm)

173 d/yr

Annual snowfall

0.0 cm

Average feels-like high

29.2 °C

Average feels-like low

19.7 °C

Average peak gust

30.4 km/h

Tropical nights (≥ 20 °C)

119 d/yr

Solar radiation

16.4 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

39.1 °C

28 September 1961

Coldest day

5.7 °C

1 June 1979

Wettest day

183 mm

30 November 1946

Windiest day

27.7 km/h

10 December 2025

Strongest gust

77.4 km/h

10 December 2025

Hottest feels-like

43.5 °C

17 February 1994

Coldest feels-like

3.8 °C

1 June 1979

Sunniest day

13.4 h

28 December 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	36.2 °C17 February 2025	8.9 °C31 July 2025	22.0 °C	883 mm	107
2024	35.8 °C2 October 2024	8.1 °C14 August 2024	22.8 °C	1,373 mm	129
2023	39.0 °C18 November 2023	8.7 °C4 July 2023	22.5 °C	1,495 mm	125
2022	34.9 °C27 January 2022	9.4 °C16 June 2022	21.6 °C	1,746 mm	79
2021	36.1 °C14 September 2021	7.0 °C31 July 2021	21.5 °C	1,478 mm	90
2020	37.5 °C2 October 2020	8.0 °C27 May 2020	22.0 °C	1,600 mm	83
2019	36.5 °C18 September 2019	9.5 °C12 July 2019	22.8 °C	1,214 mm	116
2018	35.3 °C18 January 2018	9.5 °C22 May 2018	22.6 °C	1,447 mm	104
2017	34.4 °C1 January 2017	10.3 °C7 August 2017	22.3 °C	1,229 mm	104
2016	35.1 °C1 February 2016	7.7 °C15 June 2016	22.4 °C	1,432 mm	133
2015	36.8 °C24 September 2015	11.4 °C5 August 2015	23.0 °C	1,333 mm	124
2014	36.1 °C3 January 2014	9.9 °C29 April 2014	22.7 °C	917 mm	133
2013	37.3 °C12 November 2013	9.3 °C9 May 2013	21.9 °C	1,798 mm	82
2012	37.7 °C19 September 2012	10.5 °C29 September 2012	22.2 °C	1,368 mm	97
2011	34.6 °C1 October 2011	8.7 °C6 June 2011	21.7 °C	1,435 mm	93
2010	36.4 °C8 February 2010	8.2 °C18 August 2010	22.3 °C	1,535 mm	120
2009	35.1 °C28 September 2009	7.4 °C4 June 2009	22.4 °C	1,927 mm	102
2008	34.6 °C27 October 2008	9.2 °C15 July 2008	21.6 °C	1,912 mm	86
2007	35.0 °C10 March 2007	8.9 °C30 July 2007	22.4 °C	1,371 mm	110
2006	36.8 °C25 January 2006	8.8 °C6 September 2006	22.3 °C	1,428 mm	101
2005	36.9 °C14 October 2005	11.4 °C10 July 2005	22.4 °C	1,682 mm	86
2004	34.9 °C31 October 2004	9.3 °C11 August 2004	21.8 °C	1,545 mm	56
2003	37.0 °C16 December 2003	10.1 °C19 August 2003	22.3 °C	1,604 mm	110
2002	35.3 °C1 December 2002	11.5 °C3 September 2002	23.0 °C	1,268 mm	121
2001	33.6 °C11 February 2001	10.9 °C30 July 2001	22.3 °C	1,265 mm	109
2000	35.0 °C15 January 2000	5.7 °C18 July 2000	21.7 °C	1,281 mm	90
1999	35.7 °C2 February 1999	9.5 °C23 May 1999	21.3 °C	1,378 mm	68
1998	35.5 °C31 January 1998	10.7 °C7 June 1998	22.2 °C	1,532 mm	97
1997	36.1 °C9 September 1997	8.6 °C10 June 1997	22.3 °C	1,544 mm	128
1996	35.6 °C27 January 1996	9.2 °C13 July 1996	21.6 °C	1,855 mm	96
1995	36.9 °C17 January 1995	10.9 °C5 September 1995	22.3 °C	1,958 mm	113
1994	36.1 °C3 October 1994	6.6 °C27 June 1994	22.5 °C	1,792 mm	114
1993	35.9 °C7 September 1993	9.8 °C13 August 1993	22.4 °C	1,436 mm	117
1992	35.4 °C22 February 1992	9.7 °C25 August 1992	22.2 °C	1,572 mm	87
1991	33.9 °C26 December 1991	10.4 °C17 August 1991	22.0 °C	1,608 mm	67
1990	35.2 °C25 January 1990	9.7 °C19 May 1990	22.2 °C	1,357 mm	86
1989	33.4 °C22 February 1989	8.8 °C19 July 1989	21.6 °C	1,622 mm	52
1988	34.1 °C19 January 1988	5.7 °C6 June 1988	21.7 °C	1,713 mm	71
1987	34.3 °C9 January 1987	9.0 °C27 May 1987	22.2 °C	1,602 mm	82
1986	34.2 °C7 October 1986	9.8 °C13 July 1986	22.2 °C	1,516 mm	80
1985	34.5 °C27 August 1985	8.3 °C19 July 1985	21.6 °C	1,759 mm	48
1984	35.1 °C13 January 1984	10.4 °C27 August 1984	22.3 °C	1,308 mm	72
1983	35.0 °C26 February 1983	7.9 °C6 August 1983	21.9 °C	2,179 mm	53
1982	33.3 °C4 November 1982	10.2 °C6 May 1982	21.8 °C	1,696 mm	45
1981	34.7 °C29 September 1981	8.9 °C22 July 1981	21.5 °C	1,650 mm	59
1980	34.6 °C27 October 1980	10.4 °C18 June 1980	22.0 °C	1,439 mm	76
1979	33.2 °C14 December 1979	5.7 °C1 June 1979	21.2 °C	1,882 mm	59
1978	34.3 °C31 January 1978	7.7 °C2 June 1978	21.6 °C	1,554 mm	65
1977	35.1 °C28 February 1977	11.7 °C21 May 1977	22.4 °C	1,258 mm	98
1976	34.2 °C19 January 1976	9.0 °C16 August 1976	21.4 °C	1,883 mm	62
1975	34.7 °C9 December 1975	7.4 °C8 July 1975	21.4 °C	1,734 mm	65
1974	34.0 °C2 December 1974	8.7 °C16 June 1974	21.6 °C	1,400 mm	61
1973	36.3 °C11 February 1973	10.6 °C17 May 1973	22.1 °C	1,704 mm	77
1972	34.5 °C6 January 1972	10.2 °C29 July 1972	21.9 °C	1,716 mm	75
1971	34.8 °C25 January 1971	10.0 °C14 September 1971	21.5 °C	1,357 mm	77
1970	33.8 °C10 December 1970	10.4 °C13 August 1970	21.5 °C	1,124 mm	57
1969	36.2 °C9 January 1969	10.3 °C7 June 1969	21.6 °C	1,325 mm	59
1968	36.0 °C24 December 1968	9.5 °C14 July 1968	20.6 °C	1,083 mm	54
1967	34.5 °C12 October 1967	11.1 °C19 July 1967	21.8 °C	1,848 mm	48
1966	34.4 °C5 December 1966	9.9 °C23 September 1966	21.2 °C	1,921 mm	69
1965	33.9 °C21 December 1965	9.9 °C26 May 1965	21.1 °C	2,154 mm	45
1964	33.9 °C18 February 1964	8.0 °C29 July 1964	20.3 °C	1,879 mm	36
1963	36.4 °C14 October 1963	10.1 °C22 June 1963	21.5 °C	1,161 mm	87
1962	32.4 °C18 February 1962	8.5 °C26 August 1962	20.2 °C	2,406 mm	24
1961	39.1 °C28 September 1961	11.3 °C19 June 1961	22.0 °C	1,871 mm	95
1960	37.2 °C25 September 1960	9.7 °C15 July 1960	20.7 °C	1,833 mm	40
1959	33.7 °C28 October 1959	10.5 °C13 June 1959	21.5 °C	1,306 mm	81
1958	34.7 °C16 November 1958	8.9 °C22 September 1958	21.3 °C	1,654 mm	80
1957	34.3 °C19 October 1957	8.6 °C23 July 1957	21.0 °C	1,527 mm	49
1956	35.5 °C2 February 1956	9.3 °C12 July 1956	20.4 °C	1,376 mm	64
1955	35.3 °C1 October 1955	10.5 °C14 July 1955	21.0 °C	1,193 mm	79
1954	36.3 °C22 September 1954	9.5 °C30 August 1954	21.4 °C	2,171 mm	62
1953	34.0 °C30 January 1953	10.5 °C27 July 1953	21.2 °C	1,770 mm	54
1952	34.4 °C1 October 1952	10.8 °C17 July 1952	21.0 °C	1,890 mm	36
1951	36.0 °C16 November 1951	10.0 °C14 August 1951	20.8 °C	1,430 mm	68
1950	33.8 °C18 September 1950	8.7 °C14 July 1950	20.9 °C	1,901 mm	53
1949	33.0 °C18 March 1949	10.7 °C3 July 1949	20.5 °C	1,950 mm	39
1948	35.0 °C27 September 1948	9.6 °C30 August 1948	21.1 °C	1,322 mm	70
1947	35.2 °C8 January 1947	7.5 °C4 August 1947	20.6 °C	1,971 mm	40
1946	33.9 °C2 November 1946	9.9 °C26 July 1946	21.6 °C	2,187 mm	71
1945	34.4 °C13 November 1945	10.5 °C14 July 1945	21.3 °C	1,896 mm	57
1944	34.5 °C2 October 1944	9.7 °C22 August 1944	21.1 °C	2,047 mm	45
1943	32.2 °C19 January 1943	8.2 °C5 September 1943	20.0 °C	1,798 mm	17
1942	35.2 °C6 October 1942	7.4 °C24 June 1942	20.4 °C	1,473 mm	55
1941	34.4 °C12 January 1941	10.5 °C1 July 1941	21.2 °C	2,140 mm	45
1940	33.8 °C13 September 1940	11.3 °C28 September 1940	21.4 °C	2,297 mm	41

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

27.2 °C

+0.7 °C

Hot days (≥ 30 °C)

107 d/yr

+30

Frost days (< 0 °C)

0 d/yr

Annual rainfall

883 mm

-727 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	29.6 °C	+0.3 °C	210 mm	-61 mm
Feb	32.4 °C	+2.8 °C	24 mm	-188 mm
Mar	29.4 °C	+1.0 °C	96 mm	-107 mm
Apr	26.4 °C	-0.2 °C	114 mm	+17 mm
May	25.6 °C	+0.9 °C	13 mm	-43 mm
Jun	24.8 °C	+0.8 °C	26 mm	-11 mm
Jul	22.8 °C	-0.9 °C	14 mm	-19 mm
Aug	24.9 °C	0.0 °C	13 mm	-25 mm
Sep	26.0 °C	+0.2 °C	37 mm	-35 mm
Oct	26.5 °C	0.0 °C	92 mm	-41 mm
Nov	27.2 °C	+0.4 °C	117 mm	-87 mm
Dec	30.8 °C	+2.9 °C	128 mm	-128 mm

The year's extremes

Hottest day

36.2 °C

17 Feb 2025

Coldest day

8.9 °C

31 Jul 2025

Wettest day

32.4 mm

2 Nov 2025

Windiest day

27.7 km/h

10 Dec 2025

Strongest gust

77.4 km/h

10 Dec 2025

Hottest feels-like

41.3 °C

30 Dec 2025

Coldest feels-like

7.8 °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 Paty do Alferes?

Paty do Alferes has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 21.7 °C and it receives 1,610 mm of precipitation per year.

What is the hottest day ever recorded in Paty do Alferes?

The hottest day measured in Paty do Alferes between 1940 and 2025 was 28 September 1961, reaching 39.1 °C.

What is the coldest day in Paty do Alferes?

The coldest day measured in Paty do Alferes between 1940 and 2025 was 1 June 1979, at 5.7 °C.

Does it snow in Paty do Alferes?

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

Has the climate of Paty do Alferes warmed?

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

What is the wettest day in Paty do Alferes?

The wettest day measured in Paty do Alferes between 1940 and 2025 was 30 November 1946, with 183 mm of rain in 24 hours.

What was the windiest day in Paty do Alferes?

The windiest day measured in Paty do Alferes between 1940 and 2025 was 10 December 2025, with winds reaching 27.7 km/h.

What is the warmest month in Paty do Alferes?

The warmest month in Paty do Alferes is February (24.7 °C on average); the coldest is July (18.5 °C).

How much does it rain in Paty do Alferes?

Paty do Alferes receives on average 1,610 mm of precipitation per year, spread over about 173 rainy days.

Is it sunny in Paty do Alferes?

Paty do Alferes gets on average 9.2 hours of sunshine per day, roughly 3,358 hours per year over 1940-2025.

Are there tropical nights in Paty do Alferes?

Yes: Paty do Alferes has on average 119 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Paty do Alferes?

In Paty do Alferes, between 1940 and 2025, the highest apparent temperature reached 43.5 °C on 17 February 1994, and the lowest was 3.8 °C on 1 June 1979.

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