Monte Alto climate — normals and trends

Q: What is the climate of Monte Alto?

Monte Alto has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 22.6 °C and it receives 1,443 mm of precipitation per year.

Q: What is the hottest day ever recorded in Monte Alto?

The hottest day measured in Monte Alto between 1940 and 2025 was 17 October 1963, reaching 40.5 °C.

Q: What is the coldest day in Monte Alto?

The coldest day measured in Monte Alto between 1940 and 2025 was 1 June 1979, at 2.0 °C.

Q: Does it snow in Monte Alto?

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

Q: Has the climate of Monte Alto warmed?

Yes: Monte Alto warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Monte Alto?

The wettest day measured in Monte Alto between 1940 and 2025 was 8 November 1953, with 128 mm of rain in 24 hours.

Q: What was the windiest day in Monte Alto?

The windiest day measured in Monte Alto between 1940 and 2025 was 7 June 2011, with winds reaching 35.5 km/h.

Q: What is the warmest month in Monte Alto?

The warmest month in Monte Alto is January (24.3 °C on average); the coldest is June (19.3 °C).

Q: How much does it rain in Monte Alto?

Monte Alto receives on average 1,443 mm of precipitation per year, spread over about 153 rainy days.

Q: Is it sunny in Monte Alto?

Monte Alto gets on average 10.1 hours of sunshine per day, roughly 3,687 hours per year over 1940-2025.

Monte Alto (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 22.6 °C and it receives 1,443 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 January (24.3 °C on average) and the coldest is June (19.3 °C). Rainfall peaks in January.

Monte Alto averages 0 frost days, 101 hot days (≥ 30 °C) and 153 rainy days per year.

Monte Alto has warmed by +2.0 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.

The hottest day of the period reached 40.5 °C (on 17 October 1963) and the coldest 2.0 °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

Monte AltoSão Paulo

coords: -21.26°, -48.50°
period: 1940–2025 · 86 yrs

AwTropical savannaWarmest monthJanuaryColdest monthJuneWettest monthJanuaryDriest monthAugust

Mean daily temperature

22.6°C

Average daily high

28.0°C

Average daily low

18.2°C

Annual rainfall

1,443mm

Sunshine / day

10.1h

Mean relative humidity

71%

Average peak wind

13.5km/h

Seasonal range

5.0°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

101 d/yr

Rainy days (≥ 1 mm)

153 d/yr

Annual snowfall

0.0 cm

Average feels-like high

30.4 °C

Average feels-like low

18.8 °C

Average peak gust

30.5 km/h

Tropical nights (≥ 20 °C)

130 d/yr

Solar radiation

18.6 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.0 °C

since 1940

+0.2 °C per decade · r² = 0.63 · 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

40.5 °C

17 October 1963

Coldest day

2.0 °C

1 June 1979

Wettest day

128 mm

8 November 1953

Windiest day

35.5 km/h

7 June 2011

Strongest gust

84.6 km/h

7 June 2011

Hottest feels-like

43.0 °C

29 October 2007

Coldest feels-like

-1.3 °C

27 June 1994

Sunniest day

13.3 h

11 December 2021

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	36.8 °C1 December 2025	3.9 °C25 June 2025	23.1 °C	814 mm	172
2024	39.5 °C8 October 2024	5.6 °C11 August 2024	24.1 °C	1,155 mm	210
2023	38.7 °C13 November 2023	5.8 °C18 June 2023	23.3 °C	1,122 mm	161
2022	34.9 °C10 September 2022	6.1 °C18 May 2022	22.6 °C	1,056 mm	135
2021	38.5 °C21 September 2021	3.4 °C30 July 2021	23.1 °C	917 mm	160
2020	40.1 °C7 October 2020	5.8 °C27 May 2020	23.2 °C	988 mm	139
2019	37.1 °C12 September 2019	5.8 °C7 July 2019	24.0 °C	1,026 mm	166
2018	36.2 °C24 September 2018	8.1 °C11 August 2018	24.0 °C	1,034 mm	180
2017	37.3 °C14 October 2017	9.1 °C11 June 2017	23.9 °C	1,061 mm	170
2016	36.8 °C17 October 2016	5.6 °C18 July 2016	23.6 °C	1,364 mm	179
2015	38.5 °C20 October 2015	12.4 °C30 May 2015	23.9 °C	1,399 mm	150
2014	38.9 °C16 October 2014	10.5 °C27 May 2014	24.2 °C	868 mm	188
2013	36.3 °C28 September 2013	5.8 °C28 August 2013	23.0 °C	1,254 mm	131
2012	37.9 °C30 October 2012	7.4 °C19 July 2012	23.5 °C	1,265 mm	152
2011	36.8 °C30 September 2011	5.5 °C28 June 2011	23.2 °C	1,482 mm	148
2010	35.7 °C17 September 2010	8.1 °C16 August 2010	23.4 °C	1,158 mm	166
2009	34.4 °C6 March 2009	5.0 °C3 June 2009	22.9 °C	1,718 mm	97
2008	37.2 °C29 October 2008	8.1 °C17 June 2008	22.9 °C	1,295 mm	109
2007	37.0 °C29 October 2007	8.0 °C26 July 2007	23.8 °C	1,349 mm	168
2006	35.8 °C15 September 2006	8.1 °C6 September 2006	23.0 °C	1,392 mm	121
2005	35.5 °C13 October 2005	10.0 °C11 August 2005	23.3 °C	1,380 mm	133
2004	36.9 °C26 September 2004	8.2 °C27 May 2004	22.5 °C	1,548 mm	94
2003	36.7 °C25 September 2003	8.8 °C27 May 2003	23.0 °C	1,216 mm	115
2002	37.0 °C13 October 2002	6.5 °C3 September 2002	23.7 °C	1,128 mm	172
2001	35.8 °C10 September 2001	7.3 °C27 June 2001	23.0 °C	1,260 mm	145
2000	37.0 °C13 October 2000	4.6 °C18 July 2000	22.7 °C	1,618 mm	118
1999	36.2 °C1 October 1999	8.0 °C18 April 1999	22.8 °C	1,353 mm	128
1998	35.7 °C17 September 1998	10.5 °C13 July 1998	22.9 °C	1,496 mm	134
1997	36.0 °C10 November 1997	6.4 °C9 June 1997	22.8 °C	1,633 mm	119
1996	33.8 °C29 January 1996	7.2 °C29 June 1996	22.5 °C	1,842 mm	100
1995	35.1 °C11 September 1995	11.5 °C1 June 1995	22.9 °C	1,776 mm	133
1994	37.6 °C13 October 1994	2.1 °C26 June 1994	23.3 °C	1,433 mm	140
1993	35.1 °C16 November 1993	6.6 °C1 August 1993	22.6 °C	1,492 mm	93
1992	32.5 °C15 November 1992	9.6 °C24 July 1992	22.3 °C	1,679 mm	49
1991	33.7 °C15 October 1991	9.4 °C25 July 1991	22.7 °C	1,936 mm	100
1990	36.7 °C12 October 1990	5.1 °C22 June 1990	23.0 °C	1,268 mm	150
1989	34.9 °C23 September 1989	8.2 °C12 July 1989	22.4 °C	1,594 mm	96
1988	37.2 °C27 September 1988	4.8 °C5 June 1988	22.8 °C	1,412 mm	124
1987	36.9 °C18 October 1987	5.2 °C8 August 1987	22.9 °C	1,266 mm	135
1986	35.8 °C7 October 1986	8.6 °C2 June 1986	22.6 °C	1,347 mm	102
1985	37.8 °C17 November 1985	4.5 °C9 June 1985	22.7 °C	1,190 mm	118
1984	36.7 °C5 November 1984	7.5 °C27 August 1984	23.2 °C	1,262 mm	125
1983	33.4 °C17 February 1983	8.2 °C4 August 1983	22.3 °C	2,261 mm	58
1982	33.1 °C12 September 1982	11.0 °C31 July 1982	22.3 °C	1,805 mm	67
1981	35.7 °C28 September 1981	2.1 °C21 July 1981	22.5 °C	1,281 mm	91
1980	37.2 °C28 October 1980	7.6 °C15 June 1980	22.8 °C	1,330 mm	104
1979	35.4 °C22 November 1979	2.0 °C1 June 1979	22.1 °C	1,270 mm	78
1978	33.9 °C25 January 1978	4.9 °C16 August 1978	22.4 °C	1,272 mm	94
1977	33.8 °C1 August 1977	6.3 °C18 May 1977	23.0 °C	1,294 mm	115
1976	33.8 °C19 January 1976	7.4 °C6 July 1976	21.6 °C	1,868 mm	43
1975	34.7 °C8 September 1975	4.7 °C18 July 1975	22.6 °C	1,285 mm	119
1974	36.0 °C19 November 1974	8.9 °C17 August 1974	22.3 °C	1,428 mm	107
1973	35.2 °C18 September 1973	5.4 °C20 June 1973	22.8 °C	1,312 mm	110
1972	35.2 °C26 October 1972	4.6 °C9 July 1972	22.2 °C	1,543 mm	64
1971	35.3 °C4 February 1971	7.0 °C10 June 1971	22.3 °C	1,217 mm	95
1970	35.1 °C17 October 1970	9.4 °C3 July 1970	22.7 °C	940 mm	111
1969	35.8 °C11 September 1969	3.9 °C11 July 1969	23.3 °C	874 mm	148
1968	36.5 °C6 November 1968	5.9 °C18 May 1968	22.0 °C	926 mm	97
1967	35.9 °C6 September 1967	6.7 °C10 June 1967	22.5 °C	1,510 mm	86
1966	35.0 °C16 September 1966	7.1 °C6 August 1966	22.0 °C	1,442 mm	52
1965	35.0 °C10 September 1965	4.6 °C12 July 1965	21.6 °C	1,787 mm	40
1964	33.2 °C1 September 1964	6.1 °C28 July 1964	21.1 °C	2,038 mm	24
1963	40.5 °C17 October 1963	6.9 °C21 June 1963	23.4 °C	1,012 mm	120
1962	35.0 °C11 September 1962	5.1 °C18 July 1962	21.2 °C	1,899 mm	31
1961	39.2 °C28 September 1961	11.2 °C4 August 1961	23.1 °C	1,420 mm	91
1960	38.0 °C24 September 1960	7.7 °C25 June 1960	21.8 °C	1,767 mm	43
1959	35.6 °C4 October 1959	6.2 °C8 June 1959	22.6 °C	1,467 mm	93
1958	35.2 °C3 December 1958	9.7 °C22 June 1958	22.2 °C	1,329 mm	92
1957	36.3 °C20 October 1957	4.4 °C21 July 1957	21.9 °C	1,496 mm	50
1956	34.9 °C8 October 1956	7.1 °C6 June 1956	21.3 °C	1,259 mm	68
1955	37.3 °C17 September 1955	6.8 °C25 May 1955	22.3 °C	1,457 mm	70
1954	35.8 °C21 September 1954	6.7 °C21 June 1954	22.1 °C	1,691 mm	61
1953	33.8 °C21 August 1953	10.5 °C5 July 1953	22.1 °C	1,814 mm	25
1952	35.5 °C30 September 1952	7.6 °C17 July 1952	21.6 °C	1,695 mm	31
1951	35.4 °C26 September 1951	11.1 °C16 July 1951	21.9 °C	1,307 mm	61
1950	35.4 °C17 September 1950	8.5 °C12 June 1950	21.7 °C	1,884 mm	47
1949	35.1 °C12 October 1949	9.9 °C19 May 1949	21.8 °C	1,886 mm	35
1948	37.1 °C26 September 1948	7.9 °C15 June 1948	22.3 °C	1,321 mm	64
1947	32.6 °C8 January 1947	8.8 °C3 August 1947	21.3 °C	1,925 mm	17
1946	32.3 °C6 September 1946	8.0 °C27 July 1946	21.8 °C	1,874 mm	34
1945	32.9 °C29 September 1945	10.9 °C26 June 1945	21.6 °C	2,537 mm	27
1944	35.8 °C7 September 1944	10.9 °C11 July 1944	22.2 °C	1,794 mm	39
1943	31.9 °C17 January 1943	9.9 °C26 June 1943	20.9 °C	1,394 mm	13
1942	38.6 °C27 November 1942	4.6 °C18 June 1942	21.8 °C	1,071 mm	88
1941	31.8 °C26 October 1941	8.9 °C30 May 1941	21.5 °C	2,240 mm	19
1940	33.9 °C23 August 1940	9.9 °C18 August 1940	21.7 °C	2,020 mm	25

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

29.4 °C

+1.4 °C

Hot days (≥ 30 °C)

172 d/yr

+71

Frost days (< 0 °C)

0 d/yr

Annual rainfall

814 mm

-629 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	30.6 °C	+1.8 °C	158 mm	-89 mm
Feb	31.0 °C	+2.1 °C	75 mm	-128 mm
Mar	31.5 °C	+2.8 °C	66 mm	-97 mm
Apr	28.8 °C	+1.0 °C	94 mm	+16 mm
May	27.3 °C	+1.5 °C	12 mm	-40 mm
Jun	25.8 °C	+0.6 °C	47 mm	+16 mm
Jul	26.1 °C	+0.4 °C	2 mm	-23 mm
Aug	28.9 °C	+0.7 °C	1 mm	-24 mm
Sep	31.9 °C	+2.0 °C	19 mm	-40 mm
Oct	30.0 °C	+0.3 °C	100 mm	-42 mm
Nov	30.2 °C	+1.2 °C	87 mm	-91 mm
Dec	30.9 °C	+2.3 °C	152 mm	-87 mm

The year's extremes

Hottest day

36.8 °C

1 Dec 2025

Coldest day

3.9 °C

25 Jun 2025

Wettest day

36.9 mm

3 Jan 2025

Windiest day

27.5 km/h

10 Dec 2025

Strongest gust

68.8 km/h

22 Sep 2025

Hottest feels-like

40.4 °C

26 Dec 2025

Coldest feels-like

0.8 °C

25 Jun 2025

Sunniest day

13.2 h

26 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 Monte Alto?

Monte Alto has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 22.6 °C and it receives 1,443 mm of precipitation per year.

What is the hottest day ever recorded in Monte Alto?

The hottest day measured in Monte Alto between 1940 and 2025 was 17 October 1963, reaching 40.5 °C.

What is the coldest day in Monte Alto?

The coldest day measured in Monte Alto between 1940 and 2025 was 1 June 1979, at 2.0 °C.

Does it snow in Monte Alto?

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

Has the climate of Monte Alto warmed?

Yes: Monte Alto warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Monte Alto?

The wettest day measured in Monte Alto between 1940 and 2025 was 8 November 1953, with 128 mm of rain in 24 hours.

What was the windiest day in Monte Alto?

The windiest day measured in Monte Alto between 1940 and 2025 was 7 June 2011, with winds reaching 35.5 km/h.

What is the warmest month in Monte Alto?

The warmest month in Monte Alto is January (24.3 °C on average); the coldest is June (19.3 °C).

How much does it rain in Monte Alto?

Monte Alto receives on average 1,443 mm of precipitation per year, spread over about 153 rainy days.

Is it sunny in Monte Alto?

Monte Alto gets on average 10.1 hours of sunshine per day, roughly 3,687 hours per year over 1940-2025.

Are there tropical nights in Monte Alto?

Yes: Monte Alto has on average 130 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Monte Alto?

In Monte Alto, between 1940 and 2025, the highest apparent temperature reached 43.0 °C on 29 October 2007, and the lowest was -1.3 °C on 27 June 1994.

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