Tietê climate — normals and trends

Q: What is the climate of Tietê?

Tietê has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 21.4 °C and it receives 1,285 mm of precipitation per year.

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

The hottest day measured in Tietê between 1940 and 2025 was 20 January 2015, reaching 40.8 °C.

Q: What is the coldest day in Tietê?

The coldest day measured in Tietê between 1940 and 2025 was 20 June 1981, at 1.3 °C.

Q: Does it snow in Tietê?

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

Q: Has the climate of Tietê warmed?

Yes: Tietê warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Tietê?

The wettest day measured in Tietê between 1940 and 2025 was 22 January 1972, with 107 mm of rain in 24 hours.

Q: What was the windiest day in Tietê?

The windiest day measured in Tietê between 1940 and 2025 was 28 November 1950, with winds reaching 35.8 km/h.

Q: What is the warmest month in Tietê?

The warmest month in Tietê is February (24.1 °C on average); the coldest is July (17.5 °C).

Q: How much does it rain in Tietê?

Tietê receives on average 1,285 mm of precipitation per year, spread over about 144 rainy days.

Q: Is it sunny in Tietê?

Tietê gets on average 9.7 hours of sunshine per day, roughly 3,540 hours per year over 1940-2025.

Tietê (Brazil) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 21.4 °C and it receives 1,285 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 (24.1 °C on average) and the coldest is July (17.5 °C). Rainfall peaks in January.

Tietê averages 0 frost days, 84 hot days (≥ 30 °C) and 144 rainy days per year.

Tietê has warmed by +2.4 °C between 1940 and 2025, or +0.28 °C per decade. This trend is statistically significant.

The hottest day of the period reached 40.8 °C (on 20 January 2015) and the coldest 1.3 °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

TietêSão Paulo

coords: -23.10°, -47.71°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthFebruaryColdest monthJulyWettest monthJanuaryDriest monthAugust

Mean daily temperature

21.4°C

Average daily high

27.1°C

Average daily low

16.8°C

Annual rainfall

1,285mm

Sunshine / day

9.7h

Mean relative humidity

75%

Average peak wind

14.4km/h

Seasonal range

6.6°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

84 d/yr

Rainy days (≥ 1 mm)

144 d/yr

Annual snowfall

0.0 cm

Average feels-like high

29.1 °C

Average feels-like low

17.3 °C

Average peak gust

31.4 km/h

Tropical nights (≥ 20 °C)

76 d/yr

Solar radiation

17.9 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.4 °C

since 1940

+0.3 °C per decade · r² = 0.67 · 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

40.8 °C

20 January 2015

Coldest day

1.3 °C

20 June 1981

Wettest day

107 mm

22 January 1972

Windiest day

35.8 km/h

28 November 1950

Strongest gust

86.8 km/h

22 September 2025

Hottest feels-like

43.3 °C

20 January 2015

Coldest feels-like

-2.1 °C

29 July 1990

Sunniest day

13.4 h

18 December 2024

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	37.1 °C30 November 2025	2.9 °C25 June 2025	22.4 °C	899 mm	145
2024	39.0 °C26 September 2024	5.4 °C27 August 2024	23.4 °C	1,050 mm	203
2023	39.4 °C13 November 2023	8.1 °C18 June 2023	22.4 °C	1,067 mm	140
2022	35.3 °C28 February 2022	4.9 °C13 June 2022	21.8 °C	1,075 mm	123
2021	38.2 °C20 September 2021	2.0 °C30 July 2021	22.0 °C	868 mm	145
2020	40.3 °C7 October 2020	6.3 °C28 May 2020	22.4 °C	937 mm	153
2019	39.2 °C27 October 2019	5.1 °C7 July 2019	23.2 °C	907 mm	178
2018	37.7 °C12 December 2018	6.6 °C21 May 2018	23.0 °C	855 mm	178
2017	37.8 °C13 October 2017	8.4 °C11 June 2017	22.9 °C	1,062 mm	159
2016	39.3 °C19 October 2016	4.8 °C13 June 2016	22.6 °C	1,183 mm	174
2015	40.8 °C20 January 2015	9.3 °C28 July 2015	23.4 °C	1,398 mm	172
2014	39.7 °C3 February 2014	8.2 °C4 June 2014	23.6 °C	834 mm	192
2013	38.4 °C27 December 2013	6.9 °C29 August 2013	21.8 °C	1,224 mm	127
2012	39.6 °C31 October 2012	5.8 °C14 July 2012	22.5 °C	1,283 mm	152
2011	36.8 °C30 September 2011	3.6 °C28 June 2011	21.8 °C	1,268 mm	128
2010	35.6 °C12 December 2010	6.5 °C8 June 2010	22.0 °C	1,201 mm	140
2009	35.0 °C6 March 2009	4.7 °C4 June 2009	21.8 °C	1,560 mm	91
2008	36.2 °C15 October 2008	6.5 °C17 June 2008	21.4 °C	1,189 mm	78
2007	36.4 °C23 September 2007	6.2 °C4 June 2007	22.2 °C	1,222 mm	127
2006	37.4 °C15 September 2006	6.5 °C6 September 2006	22.1 °C	1,113 mm	118
2005	36.0 °C13 October 2005	8.6 °C26 July 2005	22.0 °C	1,157 mm	97
2004	36.6 °C26 September 2004	7.7 °C2 August 2004	21.2 °C	1,365 mm	73
2003	36.1 °C19 October 2003	7.4 °C18 August 2003	21.7 °C	1,093 mm	101
2002	38.2 °C12 October 2002	5.0 °C3 September 2002	22.6 °C	1,071 mm	132
2001	35.5 °C8 November 2001	5.9 °C21 June 2001	21.9 °C	1,228 mm	120
2000	36.1 °C23 October 2000	2.7 °C18 July 2000	21.4 °C	1,366 mm	94
1999	36.4 °C1 October 1999	7.8 °C18 April 1999	21.4 °C	1,355 mm	98
1998	34.9 °C3 December 1998	7.7 °C9 June 1998	21.5 °C	1,489 mm	93
1997	35.5 °C9 September 1997	6.0 °C9 June 1997	21.7 °C	1,489 mm	109
1996	34.9 °C30 January 1996	6.1 °C13 July 1996	21.2 °C	1,603 mm	86
1995	34.8 °C11 September 1995	7.5 °C5 June 1995	21.5 °C	1,652 mm	101
1994	36.9 °C13 October 1994	1.4 °C26 June 1994	22.0 °C	1,240 mm	118
1993	35.4 °C2 January 1993	5.1 °C1 August 1993	21.5 °C	1,405 mm	83
1992	33.3 °C15 November 1992	8.4 °C26 August 1992	21.2 °C	1,354 mm	53
1991	34.5 °C16 October 1991	5.6 °C24 July 1991	21.2 °C	1,553 mm	76
1990	35.7 °C11 October 1990	1.4 °C29 July 1990	21.5 °C	1,303 mm	131
1989	34.7 °C25 October 1989	6.6 °C12 July 1989	20.9 °C	1,420 mm	59
1988	37.0 °C27 September 1988	1.6 °C6 June 1988	21.3 °C	1,282 mm	100
1987	34.6 °C15 September 1987	3.6 °C9 August 1987	21.3 °C	1,212 mm	102
1986	36.2 °C1 November 1986	6.8 °C2 June 1986	21.7 °C	1,329 mm	89
1985	39.0 °C17 November 1985	4.8 °C8 June 1985	21.4 °C	1,013 mm	101
1984	35.5 °C8 November 1984	4.7 °C27 August 1984	22.1 °C	1,020 mm	109
1983	33.4 °C17 February 1983	5.5 °C8 August 1983	21.3 °C	2,106 mm	51
1982	33.0 °C12 February 1982	8.8 °C31 July 1982	21.2 °C	1,513 mm	57
1981	34.6 °C19 September 1981	1.3 °C20 June 1981	21.2 °C	1,217 mm	69
1980	35.9 °C27 October 1980	5.9 °C28 June 1980	21.6 °C	1,184 mm	79
1979	34.5 °C7 February 1979	1.5 °C1 June 1979	21.0 °C	1,187 mm	86
1978	35.9 °C25 October 1978	4.2 °C2 June 1978	21.4 °C	1,098 mm	103
1977	34.8 °C11 March 1977	7.3 °C18 May 1977	22.0 °C	1,264 mm	106
1976	34.3 °C19 January 1976	6.2 °C16 August 1976	20.4 °C	1,764 mm	42
1975	34.7 °C10 September 1975	3.3 °C8 July 1975	21.3 °C	1,136 mm	99
1974	37.0 °C19 November 1974	5.1 °C17 August 1974	20.9 °C	1,333 mm	88
1973	34.9 °C22 February 1973	5.1 °C20 June 1973	21.5 °C	1,174 mm	90
1972	34.5 °C26 October 1972	3.8 °C9 July 1972	21.1 °C	1,546 mm	64
1971	36.3 °C25 January 1971	5.4 °C7 July 1971	21.2 °C	1,018 mm	97
1970	34.7 °C8 December 1970	7.8 °C2 September 1970	21.2 °C	1,023 mm	64
1969	35.0 °C11 September 1969	3.4 °C11 July 1969	21.8 °C	775 mm	123
1968	36.8 °C7 October 1968	4.1 °C18 May 1968	20.7 °C	825 mm	89
1967	34.2 °C9 October 1967	4.3 °C9 June 1967	21.3 °C	1,060 mm	73
1966	34.0 °C11 September 1966	4.2 °C7 August 1966	20.5 °C	1,394 mm	34
1965	34.7 °C10 September 1965	3.7 °C12 July 1965	20.3 °C	1,543 mm	23
1964	31.2 °C1 September 1964	6.2 °C27 July 1964	19.8 °C	1,516 mm	9
1963	38.6 °C17 October 1963	4.6 °C22 June 1963	21.5 °C	972 mm	87
1962	33.6 °C8 September 1962	4.1 °C12 July 1962	19.6 °C	1,577 mm	22
1961	38.7 °C27 September 1961	10.0 °C5 August 1961	21.7 °C	1,154 mm	69
1960	36.0 °C24 September 1960	6.5 °C10 July 1960	20.1 °C	1,393 mm	18
1959	34.2 °C11 October 1959	5.6 °C8 June 1959	21.2 °C	1,260 mm	57
1958	34.1 °C6 December 1958	6.2 °C23 June 1958	20.7 °C	1,318 mm	55
1957	34.9 °C19 October 1957	3.7 °C22 July 1957	20.3 °C	1,346 mm	18
1956	33.5 °C8 October 1956	6.7 °C6 June 1956	19.9 °C	1,106 mm	40
1955	36.5 °C1 October 1955	5.9 °C26 May 1955	20.4 °C	1,203 mm	46
1954	35.1 °C22 September 1954	5.2 °C22 June 1954	20.7 °C	1,327 mm	34
1953	33.1 °C21 August 1953	9.7 °C29 July 1953	20.9 °C	1,315 mm	20
1952	35.2 °C30 September 1952	5.2 °C16 July 1952	20.5 °C	1,132 mm	21
1951	34.8 °C26 September 1951	8.7 °C15 July 1951	20.6 °C	1,079 mm	35
1950	34.8 °C17 September 1950	7.7 °C16 July 1950	20.3 °C	1,459 mm	27
1949	32.1 °C13 October 1949	8.6 °C5 July 1949	20.0 °C	1,807 mm	5
1948	36.7 °C26 September 1948	6.9 °C15 June 1948	20.7 °C	1,193 mm	36
1947	32.7 °C8 January 1947	5.5 °C4 August 1947	19.9 °C	1,721 mm	16
1946	30.9 °C18 October 1946	5.8 °C17 June 1946	20.6 °C	2,088 mm	9
1945	32.4 °C28 September 1945	8.7 °C28 June 1945	20.4 °C	2,092 mm	6
1944	36.0 °C7 September 1944	8.5 °C13 July 1944	21.0 °C	1,309 mm	36
1943	32.5 °C19 January 1943	7.9 °C26 June 1943	20.0 °C	1,094 mm	24
1942	38.2 °C27 November 1942	4.3 °C25 June 1942	20.5 °C	895 mm	65
1941	31.2 °C9 January 1941	8.0 °C5 September 1941	20.5 °C	2,215 mm	8
1940	33.3 °C12 September 1940	8.8 °C19 August 1940	20.9 °C	1,593 mm	9

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

28.9 °C

+1.8 °C

Hot days (≥ 30 °C)

145 d/yr

+61

Frost days (< 0 °C)

0 d/yr

Annual rainfall

899 mm

-387 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	30.7 °C	+1.7 °C	172 mm	-44 mm
Feb	32.3 °C	+3.2 °C	102 mm	-74 mm
Mar	32.7 °C	+4.0 °C	66 mm	-68 mm
Apr	28.2 °C	+1.0 °C	102 mm	+42 mm
May	27.2 °C	+2.4 °C	10 mm	-50 mm
Jun	24.6 °C	+0.8 °C	40 mm	-3 mm
Jul	24.7 °C	+0.7 °C	6 mm	-31 mm
Aug	27.5 °C	+1.3 °C	2 mm	-32 mm
Sep	30.2 °C	+2.5 °C	14 mm	-53 mm
Oct	28.4 °C	+0.4 °C	99 mm	-23 mm
Nov	29.0 °C	+0.7 °C	74 mm	-64 mm
Dec	31.4 °C	+2.8 °C	210 mm	+13 mm

The year's extremes

Hottest day

37.1 °C

30 Nov 2025

Coldest day

2.9 °C

25 Jun 2025

Wettest day

60.3 mm

9 Dec 2025

Windiest day

35.0 km/h

10 Dec 2025

Strongest gust

86.8 km/h

22 Sep 2025

Hottest feels-like

40.6 °C

26 Dec 2025

Coldest feels-like

-0.5 °C

25 Jun 2025

Sunniest day

13.4 h

5 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 Tietê?

Tietê has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 21.4 °C and it receives 1,285 mm of precipitation per year.

What is the hottest day ever recorded in Tietê?

The hottest day measured in Tietê between 1940 and 2025 was 20 January 2015, reaching 40.8 °C.

What is the coldest day in Tietê?

The coldest day measured in Tietê between 1940 and 2025 was 20 June 1981, at 1.3 °C.

Does it snow in Tietê?

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

Has the climate of Tietê warmed?

Yes: Tietê warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Tietê?

The wettest day measured in Tietê between 1940 and 2025 was 22 January 1972, with 107 mm of rain in 24 hours.

What was the windiest day in Tietê?

The windiest day measured in Tietê between 1940 and 2025 was 28 November 1950, with winds reaching 35.8 km/h.

What is the warmest month in Tietê?

The warmest month in Tietê is February (24.1 °C on average); the coldest is July (17.5 °C).

How much does it rain in Tietê?

Tietê receives on average 1,285 mm of precipitation per year, spread over about 144 rainy days.

Is it sunny in Tietê?

Tietê gets on average 9.7 hours of sunshine per day, roughly 3,540 hours per year over 1940-2025.

Are there tropical nights in Tietê?

Yes: Tietê has on average 76 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Tietê?

In Tietê, between 1940 and 2025, the highest apparent temperature reached 43.3 °C on 20 January 2015, and the lowest was -2.1 °C on 29 July 1990.

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