Alumínio climate — normals and trends

Q: What is the climate of Alumínio?

Alumínio has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 19.8 °C and it receives 1,335 mm of precipitation per year.

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

The hottest day measured in Alumínio between 1940 and 2025 was 7 October 2020, reaching 37.8 °C.

Q: What is the coldest day in Alumínio?

The coldest day measured in Alumínio between 1940 and 2025 was 20 June 1981, at -0.3 °C.

Q: Does it snow in Alumínio?

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

Q: Has the climate of Alumínio warmed?

Yes: Alumínio warmed by +2.2 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Alumínio?

The wettest day measured in Alumínio between 1940 and 2025 was 19 January 1977, with 165 mm of rain in 24 hours.

Q: What was the windiest day in Alumínio?

The windiest day measured in Alumínio between 1940 and 2025 was 10 December 2025, with winds reaching 40.8 km/h.

Q: What is the warmest month in Alumínio?

The warmest month in Alumínio is February (22.5 °C on average); the coldest is July (16.3 °C).

Q: How much does it rain in Alumínio?

Alumínio receives on average 1,335 mm of precipitation per year, spread over about 155 rainy days.

Q: Is it sunny in Alumínio?

Alumínio gets on average 9.4 hours of sunshine per day, roughly 3,431 hours per year over 1940-2025.

Alumínio (Brazil) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 19.8 °C and it receives 1,335 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 (22.5 °C on average) and the coldest is July (16.3 °C). Rainfall peaks in January.

Alumínio averages 0 frost days, 32 hot days (≥ 30 °C) and 155 rainy days per year.

Alumínio has warmed by +2.2 °C between 1940 and 2025, or +0.25 °C per decade. This trend is statistically significant.

The hottest day of the period reached 37.8 °C (on 7 October 2020) and the coldest -0.3 °C (on 20 June 1981).

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

AlumínioSão Paulo

coords: -23.54°, -47.26°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthFebruaryColdest monthJulyWettest monthJanuaryDriest monthAugust

Mean daily temperature

19.8°C

Average daily high

24.9°C

Average daily low

15.7°C

Annual rainfall

1,335mm

Sunshine / day

9.4h

Mean relative humidity

78%

Average peak wind

15.7km/h

Seasonal range

6.2°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

32 d/yr

Rainy days (≥ 1 mm)

155 d/yr

Annual snowfall

0.0 cm

Average feels-like high

26.3 °C

Average feels-like low

15.7 °C

Average peak gust

34.8 km/h

Tropical nights (≥ 20 °C)

27 d/yr

Solar radiation

17.3 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.2 °C

since 1940

+0.3 °C per decade · r² = 0.66 · 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

37.8 °C

7 October 2020

Coldest day

-0.3 °C

20 June 1981

Wettest day

165 mm

19 January 1977

Windiest day

40.8 km/h

10 December 2025

Strongest gust

91.8 km/h

22 September 2025

Hottest feels-like

41.2 °C

19 January 2015

Coldest feels-like

-3.9 °C

20 June 1981

Sunniest day

13.5 h

20 December 1942

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	35.7 °C26 December 2025	2.2 °C25 June 2025	20.4 °C	985 mm	75	0
2024	35.6 °C26 September 2024	4.1 °C27 August 2024	21.4 °C	1,239 mm	107	0
2023	37.0 °C24 September 2023	6.9 °C17 June 2023	20.9 °C	1,148 mm	73	0
2022	34.8 °C23 January 2022	3.5 °C20 May 2022	20.0 °C	1,120 mm	55	0
2021	35.7 °C20 September 2021	1.5 °C30 July 2021	20.2 °C	959 mm	68	0
2020	37.8 °C7 October 2020	5.3 °C2 July 2020	20.5 °C	992 mm	72	0
2019	36.7 °C13 October 2019	3.8 °C7 July 2019	21.3 °C	1,022 mm	92	0
2018	35.2 °C12 December 2018	6.8 °C21 May 2018	21.0 °C	923 mm	68	0
2017	35.0 °C19 February 2017	7.7 °C19 July 2017	21.0 °C	1,085 mm	87	0
2016	35.9 °C19 October 2016	3.6 °C13 June 2016	20.7 °C	1,272 mm	87	0
2015	37.1 °C19 January 2015	9.4 °C28 July 2015	21.5 °C	1,542 mm	75	0
2014	37.4 °C7 February 2014	7.8 °C3 June 2014	21.6 °C	852 mm	111	0
2013	36.8 °C27 December 2013	5.7 °C24 July 2013	20.2 °C	1,223 mm	61	0
2012	36.8 °C31 October 2012	6.6 °C14 July 2012	20.8 °C	1,321 mm	89	0
2011	34.2 °C30 September 2011	3.9 °C28 June 2011	20.1 °C	1,136 mm	58	0
2010	32.8 °C12 December 2010	6.7 °C7 June 2010	20.4 °C	1,278 mm	66	0
2009	32.9 °C3 November 2009	5.3 °C3 June 2009	20.3 °C	1,619 mm	34	0
2008	33.1 °C15 October 2008	6.8 °C17 June 2008	19.8 °C	1,400 mm	26	0
2007	34.0 °C21 October 2007	4.8 °C4 June 2007	20.5 °C	1,238 mm	49	0
2006	34.9 °C15 September 2006	5.8 °C6 September 2006	20.5 °C	1,092 mm	45	0
2005	33.4 °C14 October 2005	6.6 °C26 July 2005	20.4 °C	1,172 mm	24	0
2004	34.0 °C26 September 2004	6.9 °C9 August 2004	19.6 °C	1,291 mm	21	0
2003	33.8 °C24 September 2003	5.9 °C18 August 2003	20.3 °C	1,085 mm	47	0
2002	35.2 °C16 October 2002	3.8 °C3 September 2002	21.0 °C	1,123 mm	53	0
2001	32.7 °C8 November 2001	5.0 °C21 June 2001	20.4 °C	1,221 mm	40	0
2000	34.1 °C23 October 2000	1.9 °C18 July 2000	19.9 °C	1,290 mm	29	0
1999	33.1 °C1 October 1999	6.2 °C15 August 1999	19.6 °C	1,421 mm	33	0
1998	32.4 °C3 December 1998	7.0 °C17 July 1998	20.0 °C	1,490 mm	31	0
1997	33.3 °C9 September 1997	5.0 °C9 June 1997	20.1 °C	1,450 mm	32	0
1996	33.1 °C30 January 1996	5.5 °C13 July 1996	19.7 °C	1,592 mm	18	0
1995	32.1 °C10 November 1995	8.0 °C5 June 1995	20.0 °C	1,751 mm	35	0
1994	33.8 °C13 October 1994	0.9 °C26 June 1994	20.6 °C	1,199 mm	58	0
1993	33.3 °C2 January 1993	4.0 °C1 August 1993	20.1 °C	1,346 mm	32	0
1992	31.3 °C15 November 1992	7.0 °C26 August 1992	19.8 °C	1,146 mm	11	0
1991	32.0 °C16 October 1991	5.2 °C24 July 1991	19.7 °C	1,560 mm	8	0
1990	33.0 °C16 November 1990	0.6 °C29 July 1990	20.0 °C	1,350 mm	44	0
1989	31.8 °C25 October 1989	6.2 °C7 August 1989	19.3 °C	1,405 mm	12	0
1988	34.3 °C27 September 1988	1.1 °C6 June 1988	19.7 °C	1,374 mm	39	0
1987	32.2 °C23 February 1987	3.0 °C9 August 1987	19.8 °C	1,276 mm	28	0
1986	34.1 °C7 October 1986	6.5 °C2 June 1986	20.3 °C	1,344 mm	34	0
1985	35.9 °C17 November 1985	2.5 °C8 June 1985	19.9 °C	1,088 mm	36	0
1984	32.9 °C8 November 1984	2.7 °C27 August 1984	20.3 °C	1,084 mm	49	0
1983	31.1 °C17 February 1983	5.7 °C6 August 1983	19.8 °C	2,181 mm	6	0
1982	31.2 °C3 November 1982	7.9 °C31 July 1982	19.7 °C	1,643 mm	9	0
1981	31.9 °C20 September 1981	-0.3 °C20 June 1981	19.4 °C	1,455 mm	18	1
1980	32.1 °C27 October 1980	5.4 °C28 June 1980	19.9 °C	1,359 mm	18	0
1979	32.1 °C7 February 1979	0.3 °C1 June 1979	19.2 °C	1,347 mm	22	0
1978	32.9 °C25 January 1978	3.1 °C2 June 1978	19.7 °C	1,082 mm	37	0
1977	32.1 °C11 March 1977	6.3 °C17 May 1977	20.4 °C	1,444 mm	30	0
1976	31.8 °C19 January 1976	6.1 °C16 August 1976	19.0 °C	1,981 mm	12	0
1975	31.9 °C10 September 1975	2.1 °C18 July 1975	19.7 °C	1,165 mm	28	0
1974	33.2 °C19 November 1974	4.5 °C17 August 1974	19.3 °C	1,402 mm	16	0
1973	32.8 °C22 February 1973	5.3 °C13 May 1973	19.9 °C	1,388 mm	23	0
1972	31.8 °C26 October 1972	3.0 °C9 July 1972	19.8 °C	1,429 mm	14	0
1971	34.7 °C25 January 1971	5.4 °C7 July 1971	19.7 °C	981 mm	46	0
1970	32.3 °C8 December 1970	6.7 °C2 September 1970	19.6 °C	1,124 mm	16	0
1969	32.6 °C5 January 1969	3.0 °C11 July 1969	20.0 °C	845 mm	34	0
1968	33.7 °C7 October 1968	2.9 °C18 May 1968	19.0 °C	911 mm	25	0
1967	32.0 °C9 October 1967	4.4 °C9 June 1967	19.7 °C	1,172 mm	15	0
1966	31.4 °C14 September 1966	3.9 °C6 August 1966	18.9 °C	1,449 mm	7	0
1965	32.0 °C10 September 1965	3.3 °C12 July 1965	18.8 °C	1,582 mm	7	0
1964	28.9 °C14 March 1964	6.5 °C6 June 1964	18.3 °C	1,509 mm	0	0
1963	36.0 °C17 October 1963	5.9 °C20 June 1963	19.9 °C	1,129 mm	43	0
1962	30.3 °C20 September 1962	3.9 °C7 July 1962	18.0 °C	1,650 mm	1	0
1961	36.6 °C28 September 1961	9.2 °C16 June 1961	20.2 °C	1,042 mm	41	0
1960	33.5 °C24 September 1960	6.8 °C10 July 1960	18.6 °C	1,461 mm	5	0
1959	31.8 °C3 October 1959	4.0 °C8 June 1959	19.7 °C	1,199 mm	14	0
1958	31.9 °C6 December 1958	6.4 °C23 June 1958	19.2 °C	1,485 mm	12	0
1957	31.8 °C19 October 1957	3.7 °C22 July 1957	18.8 °C	1,521 mm	3	0
1956	31.3 °C1 February 1956	5.3 °C6 June 1956	18.4 °C	1,078 mm	11	0
1955	33.2 °C1 October 1955	6.5 °C31 July 1955	18.8 °C	1,212 mm	12	0
1954	32.0 °C12 September 1954	5.6 °C22 June 1954	19.2 °C	1,367 mm	8	0
1953	30.5 °C21 August 1953	9.0 °C13 July 1953	19.3 °C	1,356 mm	1	0
1952	31.7 °C30 September 1952	4.6 °C16 July 1952	18.9 °C	1,244 mm	6	0
1951	31.7 °C26 September 1951	8.3 °C4 June 1951	19.0 °C	1,076 mm	10	0
1950	32.1 °C17 September 1950	7.4 °C12 July 1950	18.7 °C	1,738 mm	3	0
1949	29.0 °C18 March 1949	8.5 °C28 August 1949	18.5 °C	2,021 mm	0	0
1948	34.2 °C26 September 1948	7.8 °C15 June 1948	19.1 °C	1,219 mm	11	0
1947	30.7 °C8 January 1947	5.1 °C4 August 1947	18.4 °C	1,790 mm	5	0
1946	28.9 °C29 November 1946	6.1 °C17 June 1946	19.2 °C	2,022 mm	0	0
1945	29.8 °C28 September 1945	8.7 °C25 June 1945	19.0 °C	2,145 mm	0	0
1944	33.5 °C7 September 1944	8.6 °C15 July 1944	19.5 °C	1,252 mm	12	0
1943	30.8 °C19 January 1943	7.8 °C8 August 1943	18.4 °C	1,079 mm	2	0
1942	35.8 °C27 November 1942	4.7 °C19 June 1942	18.9 °C	953 mm	26	0
1941	29.6 °C9 January 1941	6.4 °C4 September 1941	19.0 °C	2,114 mm	0	0
1940	30.7 °C23 August 1940	8.7 °C19 August 1940	19.4 °C	1,655 mm	4	0

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

26.1 °C

+1.2 °C

Hot days (≥ 30 °C)

75 d/yr

+43

Frost days (< 0 °C)

0 d/yr

Annual rainfall

985 mm

-350 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	28.0 °C	+0.9 °C	224 mm	+12 mm
Feb	29.8 °C	+2.5 °C	115 mm	-61 mm
Mar	29.7 °C	+3.0 °C	66 mm	-74 mm
Apr	25.6 °C	+0.5 °C	112 mm	+45 mm
May	24.8 °C	+2.0 °C	16 mm	-50 mm
Jun	22.1 °C	+0.4 °C	52 mm	+1 mm
Jul	21.6 °C	-0.2 °C	8 mm	-38 mm
Aug	24.2 °C	+0.6 °C	15 mm	-24 mm
Sep	26.6 °C	+1.6 °C	22 mm	-57 mm
Oct	25.6 °C	+0.2 °C	100 mm	-26 mm
Nov	26.3 °C	+0.4 °C	88 mm	-50 mm
Dec	29.5 °C	+3.0 °C	167 mm	-29 mm

The year's extremes

Hottest day

35.7 °C

26 Dec 2025

Coldest day

2.2 °C

25 Jun 2025

Wettest day

43.9 mm

9 Dec 2025

Windiest day

40.8 km/h

10 Dec 2025

Strongest gust

91.8 km/h

22 Sep 2025

Hottest feels-like

39.3 °C

28 Dec 2025

Coldest feels-like

-0.9 °C

25 Jun 2025

Sunniest day

13.5 h

21 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 Alumínio?

Alumínio has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 19.8 °C and it receives 1,335 mm of precipitation per year.

What is the hottest day ever recorded in Alumínio?

The hottest day measured in Alumínio between 1940 and 2025 was 7 October 2020, reaching 37.8 °C.

What is the coldest day in Alumínio?

The coldest day measured in Alumínio between 1940 and 2025 was 20 June 1981, at -0.3 °C.

Does it snow in Alumínio?

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

Has the climate of Alumínio warmed?

Yes: Alumínio warmed by +2.2 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Alumínio?

The wettest day measured in Alumínio between 1940 and 2025 was 19 January 1977, with 165 mm of rain in 24 hours.

What was the windiest day in Alumínio?

The windiest day measured in Alumínio between 1940 and 2025 was 10 December 2025, with winds reaching 40.8 km/h.

What is the warmest month in Alumínio?

The warmest month in Alumínio is February (22.5 °C on average); the coldest is July (16.3 °C).

How much does it rain in Alumínio?

Alumínio receives on average 1,335 mm of precipitation per year, spread over about 155 rainy days.

Is it sunny in Alumínio?

Alumínio gets on average 9.4 hours of sunshine per day, roughly 3,431 hours per year over 1940-2025.

Are there tropical nights in Alumínio?

Yes: Alumínio has on average 27 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Alumínio?

In Alumínio, between 1940 and 2025, the highest apparent temperature reached 41.2 °C on 19 January 2015, and the lowest was -3.9 °C on 20 June 1981.

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