Itaí climate — normals and trends

Q: What is the climate of Itaí?

Itaí has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 20.3 °C and it receives 1,306 mm of precipitation per year.

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

The hottest day measured in Itaí between 1940 and 2025 was 17 November 1985, reaching 38.6 °C.

Q: What is the coldest day in Itaí?

The coldest day measured in Itaí between 1940 and 2025 was 18 July 1975, at -0.7 °C.

Q: Does it snow in Itaí?

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

Q: Has the climate of Itaí warmed?

Yes: Itaí warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Itaí?

The wettest day measured in Itaí between 1940 and 2025 was 5 January 2019, with 144 mm of rain in 24 hours.

Q: What was the windiest day in Itaí?

The windiest day measured in Itaí between 1940 and 2025 was 16 October 1950, with winds reaching 38.2 km/h.

Q: What is the warmest month in Itaí?

The warmest month in Itaí is January (23.2 °C on average); the coldest is July (16.5 °C).

Q: How much does it rain in Itaí?

Itaí receives on average 1,306 mm of precipitation per year, spread over about 145 rainy days.

Q: Is it sunny in Itaí?

Itaí gets on average 8.9 hours of sunshine per day, roughly 3,249 hours per year over 1940-2025.

Itaí (Brazil) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 20.3 °C and it receives 1,306 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 (23.2 °C on average) and the coldest is July (16.5 °C). Rainfall peaks in January.

Itaí averages 0 frost days, 47 hot days (≥ 30 °C) and 145 rainy days per year.

Itaí has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.

The hottest day of the period reached 38.6 °C (on 17 November 1985) and the coldest -0.7 °C (on 18 July 1975).

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

ItaíSão Paulo

coords: -23.42°, -49.09°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthJanuaryColdest monthJulyWettest monthJanuaryDriest monthAugust

Mean daily temperature

20.3°C

Average daily high

25.5°C

Average daily low

16.2°C

Annual rainfall

1,306mm

Sunshine / day

8.9h

Mean relative humidity

78%

Average peak wind

15.5km/h

Seasonal range

6.7°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

47 d/yr

Rainy days (≥ 1 mm)

145 d/yr

Annual snowfall

0.0 cm

Average feels-like high

27.2 °C

Average feels-like low

16.3 °C

Average peak gust

33.8 km/h

Tropical nights (≥ 20 °C)

55 d/yr

Solar radiation

16.9 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.8 °C

since 1940

+0.2 °C per decade · r² = 0.58 · 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

17 November 1985

Coldest day

-0.7 °C

18 July 1975

Wettest day

144 mm

5 January 2019

Windiest day

38.2 km/h

16 October 1950

Strongest gust

86.8 km/h

16 October 1950

Hottest feels-like

40.8 °C

30 October 2012

Coldest feels-like

-5.1 °C

18 July 1975

Sunniest day

13.4 h

16 December 2024

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	34.1 °C30 September 2025	2.6 °C25 June 2025	20.6 °C	970 mm	81	0
2024	36.2 °C26 September 2024	5.6 °C27 August 2024	21.9 °C	1,173 mm	119	0
2023	36.9 °C24 September 2023	6.6 °C15 July 2023	21.1 °C	1,253 mm	83	0
2022	34.2 °C24 January 2022	4.9 °C13 June 2022	20.2 °C	1,260 mm	49	0
2021	35.6 °C20 September 2021	2.4 °C30 July 2021	20.8 °C	905 mm	86	0
2020	37.9 °C2 October 2020	5.5 °C22 August 2020	20.9 °C	967 mm	77	0
2019	37.2 °C27 October 2019	2.1 °C6 July 2019	21.6 °C	991 mm	94	0
2018	35.2 °C17 December 2018	6.8 °C21 May 2018	21.2 °C	977 mm	76	0
2017	35.4 °C19 February 2017	5.4 °C10 June 2017	21.1 °C	1,354 mm	94	0
2016	35.6 °C19 October 2016	3.4 °C12 June 2016	21.2 °C	1,321 mm	115	0
2015	36.5 °C20 January 2015	8.2 °C16 June 2015	21.7 °C	1,628 mm	79	0
2014	38.5 °C5 February 2014	8.2 °C4 June 2014	21.6 °C	1,015 mm	109	0
2013	36.3 °C27 December 2013	3.5 °C24 July 2013	20.5 °C	1,372 mm	70	0
2012	36.1 °C31 October 2012	7.2 °C19 July 2012	21.3 °C	1,381 mm	103	0
2011	35.3 °C30 September 2011	5.2 °C5 August 2011	20.6 °C	1,104 mm	74	0
2010	34.3 °C13 March 2010	5.4 °C7 June 2010	20.5 °C	1,357 mm	71	0
2009	35.1 °C6 March 2009	4.3 °C3 June 2009	20.8 °C	1,577 mm	60	0
2008	34.1 °C15 October 2008	3.9 °C17 June 2008	20.3 °C	1,254 mm	38	0
2007	34.8 °C29 October 2007	4.6 °C26 July 2007	21.2 °C	1,240 mm	84	0
2006	34.3 °C15 September 2006	5.0 °C6 September 2006	20.9 °C	996 mm	55	0
2005	34.6 °C11 March 2005	6.7 °C26 July 2005	20.8 °C	1,406 mm	57	0
2004	35.9 °C26 September 2004	4.8 °C14 June 2004	20.2 °C	1,209 mm	42	0
2003	33.8 °C1 March 2003	5.4 °C17 August 2003	20.5 °C	1,224 mm	59	0
2002	36.0 °C11 October 2002	4.1 °C3 September 2002	21.6 °C	980 mm	101	0
2001	34.3 °C7 November 2001	4.0 °C21 June 2001	20.8 °C	1,331 mm	68	0
2000	35.5 °C23 October 2000	1.2 °C17 July 2000	20.4 °C	1,316 mm	59	0
1999	35.3 °C21 January 1999	5.7 °C18 April 1999	20.1 °C	1,316 mm	64	0
1998	34.6 °C3 December 1998	8.4 °C17 July 1998	20.5 °C	1,645 mm	62	0
1997	34.2 °C9 November 1997	6.4 °C8 June 1997	20.5 °C	1,807 mm	61	0
1996	33.8 °C30 January 1996	6.4 °C12 July 1996	20.2 °C	1,478 mm	51	0
1995	34.1 °C11 September 1995	8.8 °C23 July 1995	20.6 °C	1,519 mm	64	0
1994	34.8 °C13 October 1994	2.1 °C26 June 1994	20.8 °C	1,204 mm	68	0
1993	34.3 °C2 January 1993	3.1 °C1 August 1993	20.4 °C	1,496 mm	53	0
1992	32.0 °C15 November 1992	4.5 °C20 July 1992	20.1 °C	1,402 mm	33	0
1991	33.4 °C16 October 1991	4.2 °C3 August 1991	20.3 °C	1,477 mm	36	0
1990	33.9 °C11 October 1990	2.3 °C29 July 1990	20.4 °C	1,374 mm	82	0
1989	32.1 °C25 October 1989	7.0 °C6 July 1989	19.7 °C	1,449 mm	23	0
1988	34.5 °C26 September 1988	2.4 °C6 June 1988	20.0 °C	1,311 mm	55	0
1987	32.9 °C23 February 1987	3.9 °C9 August 1987	20.3 °C	1,329 mm	65	0
1986	33.9 °C1 November 1986	6.8 °C2 June 1986	20.6 °C	1,331 mm	49	0
1985	38.6 °C17 November 1985	4.4 °C7 June 1985	20.4 °C	925 mm	64	0
1984	34.4 °C23 February 1984	3.4 °C27 August 1984	20.9 °C	1,048 mm	65	0
1983	31.8 °C25 November 1983	5.9 °C16 June 1983	20.3 °C	2,071 mm	25	0
1982	32.3 °C13 February 1982	6.8 °C31 July 1982	20.2 °C	1,468 mm	28	0
1981	33.0 °C28 September 1981	2.2 °C20 June 1981	20.1 °C	1,215 mm	34	0
1980	32.8 °C20 October 1980	3.8 °C28 June 1980	20.2 °C	1,375 mm	35	0
1979	34.0 °C7 February 1979	1.2 °C1 June 1979	19.6 °C	1,145 mm	36	0
1978	33.7 °C30 January 1978	2.2 °C15 August 1978	20.2 °C	1,021 mm	56	0
1977	34.8 °C11 March 1977	5.6 °C17 May 1977	21.0 °C	1,237 mm	67	0
1976	35.4 °C19 January 1976	6.5 °C11 July 1976	19.5 °C	1,846 mm	29	0
1975	33.4 °C9 September 1975	-0.7 °C18 July 1975	20.1 °C	1,136 mm	49	1
1974	33.6 °C19 November 1974	4.6 °C17 August 1974	19.8 °C	1,544 mm	45	0
1973	34.9 °C22 February 1973	4.9 °C13 May 1973	20.2 °C	1,424 mm	46	0
1972	33.5 °C26 October 1972	2.6 °C9 July 1972	20.2 °C	1,384 mm	31	0
1971	34.5 °C26 January 1971	5.6 °C7 July 1971	20.0 °C	963 mm	53	0
1970	33.6 °C7 January 1970	6.6 °C3 July 1970	20.1 °C	1,228 mm	34	0
1969	33.5 °C8 February 1969	3.0 °C11 July 1969	20.4 °C	837 mm	69	0
1968	35.3 °C10 November 1968	3.5 °C18 May 1968	19.5 °C	903 mm	51	0
1967	32.9 °C2 December 1967	3.0 °C9 June 1967	20.3 °C	1,095 mm	36	0
1966	32.2 °C12 September 1966	2.8 °C6 August 1966	19.5 °C	1,250 mm	15	0
1965	31.4 °C3 September 1965	3.7 °C12 July 1965	19.3 °C	1,526 mm	5	0
1964	30.6 °C14 March 1964	6.1 °C6 June 1964	18.9 °C	1,309 mm	2	0
1963	36.1 °C17 October 1963	4.9 °C21 June 1963	20.4 °C	1,149 mm	50	0
1962	31.6 °C8 September 1962	3.4 °C18 July 1962	18.5 °C	1,384 mm	8	0
1961	36.6 °C27 September 1961	8.4 °C16 June 1961	20.7 °C	1,037 mm	47	0
1960	33.3 °C24 September 1960	5.5 °C9 July 1960	19.2 °C	1,273 mm	8	0
1959	33.6 °C7 September 1959	6.5 °C7 June 1959	20.4 °C	1,099 mm	30	0
1958	32.6 °C5 January 1958	7.6 °C24 June 1958	19.8 °C	1,419 mm	24	0
1957	33.3 °C19 October 1957	4.7 °C22 July 1957	19.4 °C	1,557 mm	11	0
1956	32.2 °C8 October 1956	5.9 °C22 July 1956	19.0 °C	1,218 mm	25	0
1955	34.5 °C1 October 1955	4.8 °C1 August 1955	19.4 °C	1,144 mm	28	0
1954	33.3 °C19 September 1954	5.3 °C22 June 1954	19.9 °C	1,084 mm	15	0
1953	31.4 °C21 August 1953	8.5 °C11 July 1953	19.9 °C	1,145 mm	5	0
1952	32.2 °C30 September 1952	5.9 °C16 July 1952	19.6 °C	1,088 mm	12	0
1951	32.7 °C26 September 1951	7.9 °C30 June 1951	19.6 °C	1,145 mm	18	0
1950	32.5 °C17 September 1950	6.0 °C12 July 1950	19.4 °C	1,603 mm	10	0
1949	30.3 °C17 March 1949	7.5 °C16 August 1949	19.2 °C	1,959 mm	2	0
1948	34.4 °C26 September 1948	6.6 °C15 June 1948	19.6 °C	1,242 mm	10	0
1947	31.7 °C7 January 1947	5.2 °C8 July 1947	19.0 °C	1,920 mm	9	0
1946	30.0 °C18 October 1946	6.3 °C17 June 1946	19.8 °C	2,046 mm	1	0
1945	30.8 °C28 September 1945	8.7 °C25 June 1945	19.6 °C	1,837 mm	1	0
1944	34.1 °C7 September 1944	8.6 °C15 July 1944	20.2 °C	1,099 mm	22	0
1943	32.7 °C17 January 1943	7.1 °C26 June 1943	19.3 °C	887 mm	18	0
1942	37.4 °C27 November 1942	3.9 °C18 June 1942	19.8 °C	881 mm	44	0
1941	30.7 °C9 January 1941	7.1 °C19 July 1941	19.6 °C	1,881 mm	1	0
1940	30.5 °C23 August 1940	9.1 °C19 August 1940	19.9 °C	1,600 mm	2	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

26.2 °C

+0.7 °C

Hot days (≥ 30 °C)

81 d/yr

+34

Frost days (< 0 °C)

0 d/yr

Annual rainfall

970 mm

-336 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	29.0 °C	+1.0 °C	195 mm	-11 mm
Feb	30.3 °C	+2.3 °C	129 mm	-40 mm
Mar	29.5 °C	+2.0 °C	58 mm	-68 mm
Apr	25.6 °C	-0.1 °C	107 mm	+43 mm
May	24.4 °C	+1.2 °C	22 mm	-51 mm
Jun	21.8 °C	-0.3 °C	73 mm	+10 mm
Jul	21.1 °C	-1.0 °C	4 mm	-46 mm
Aug	24.3 °C	+0.2 °C	2 mm	-43 mm
Sep	27.1 °C	+1.7 °C	24 mm	-60 mm
Oct	25.8 °C	-0.3 °C	94 mm	-30 mm
Nov	26.7 °C	-0.1 °C	104 mm	-24 mm
Dec	29.3 °C	+1.9 °C	157 mm	-18 mm

The year's extremes

Hottest day

34.1 °C

30 Sep 2025

Coldest day

2.6 °C

25 Jun 2025

Wettest day

48.5 mm

9 Dec 2025

Windiest day

37.2 km/h

10 Dec 2025

Strongest gust

83.2 km/h

22 Sep 2025

Hottest feels-like

39.2 °C

28 Dec 2025

Coldest feels-like

-0.5 °C

25 Jun 2025

Sunniest day

13.4 h

10 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 Itaí?

Itaí has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 20.3 °C and it receives 1,306 mm of precipitation per year.

What is the hottest day ever recorded in Itaí?

The hottest day measured in Itaí between 1940 and 2025 was 17 November 1985, reaching 38.6 °C.

What is the coldest day in Itaí?

The coldest day measured in Itaí between 1940 and 2025 was 18 July 1975, at -0.7 °C.

Does it snow in Itaí?

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

Has the climate of Itaí warmed?

Yes: Itaí warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Itaí?

The wettest day measured in Itaí between 1940 and 2025 was 5 January 2019, with 144 mm of rain in 24 hours.

What was the windiest day in Itaí?

The windiest day measured in Itaí between 1940 and 2025 was 16 October 1950, with winds reaching 38.2 km/h.

What is the warmest month in Itaí?

The warmest month in Itaí is January (23.2 °C on average); the coldest is July (16.5 °C).

How much does it rain in Itaí?

Itaí receives on average 1,306 mm of precipitation per year, spread over about 145 rainy days.

Is it sunny in Itaí?

Itaí gets on average 8.9 hours of sunshine per day, roughly 3,249 hours per year over 1940-2025.

Are there tropical nights in Itaí?

Yes: Itaí has on average 55 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Itaí?

In Itaí, between 1940 and 2025, the highest apparent temperature reached 40.8 °C on 30 October 2012, and the lowest was -5.1 °C on 18 July 1975.

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