Itanhaém climate — normals and trends

Q: What is the climate of Itanhaém?

Itanhaém has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 21.8 °C and it receives 1,920 mm of precipitation per year.

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

The hottest day measured in Itanhaém between 1940 and 2025 was 30 August 2005, reaching 34.9 °C.

Q: What is the coldest day in Itanhaém?

The coldest day measured in Itanhaém between 1940 and 2025 was 29 July 1990, at 10.0 °C.

Q: Does it snow in Itanhaém?

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

Q: Has the climate of Itanhaém warmed?

Yes: Itanhaém warmed by +0.9 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Itanhaém?

The wettest day measured in Itanhaém between 1940 and 2025 was 6 February 1994, with 224 mm of rain in 24 hours.

Q: What was the windiest day in Itanhaém?

The windiest day measured in Itanhaém between 1940 and 2025 was 17 December 1947, with winds reaching 57.2 km/h.

Q: What is the warmest month in Itanhaém?

The warmest month in Itanhaém is February (25.0 °C on average); the coldest is July (18.8 °C).

Q: How much does it rain in Itanhaém?

Itanhaém receives on average 1,920 mm of precipitation per year, spread over about 203 rainy days.

Q: Is it sunny in Itanhaém?

Itanhaém gets on average 9.1 hours of sunshine per day, roughly 3,322 hours per year over 1940-2025.

Itanhaém (Brazil) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 21.8 °C and it receives 1,920 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 (25.0 °C on average) and the coldest is July (18.8 °C). Rainfall peaks in January.

Itanhaém averages 0 frost days, 3 hot days (≥ 30 °C) and 203 rainy days per year.

Itanhaém has warmed by +0.9 °C between 1940 and 2025, or +0.11 °C per decade. This trend is statistically significant.

The hottest day of the period reached 34.9 °C (on 30 August 2005) and the coldest 10.0 °C (on 29 July 1990).

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

ItanhaémSão Paulo

coords: -24.18°, -46.79°
period: 1940–2025 · 86 yrs

AfTropical rainforestWarmest monthFebruaryColdest monthJulyWettest monthJanuaryDriest monthAugust

Mean daily temperature

21.8°C

Average daily high

23.2°C

Average daily low

20.4°C

Annual rainfall

1,920mm

Sunshine / day

9.1h

Mean relative humidity

85%

Average peak wind

17.3km/h

Seasonal range

6.2°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

3 d/yr

Rainy days (≥ 1 mm)

203 d/yr

Annual snowfall

0.0 cm

Average feels-like high

26.1 °C

Average feels-like low

22.0 °C

Average peak gust

27.7 km/h

Tropical nights (≥ 20 °C)

200 d/yr

Solar radiation

16.3 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+0.9 °C

since 1940

+0.1 °C per decade · r² = 0.35 · 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

34.9 °C

30 August 2005

Coldest day

10.0 °C

29 July 1990

Wettest day

224 mm

6 February 1994

Windiest day

57.2 km/h

17 December 1947

Strongest gust

82.8 km/h

17 December 1947

Hottest feels-like

41.9 °C

26 December 2012

Coldest feels-like

5.0 °C

9 July 1994

Sunniest day

13.5 h

12 December 1941

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	33.7 °C17 February 2025	13.6 °C11 August 2025	22.0 °C	1,545 mm	11
2024	33.1 °C2 May 2024	12.2 °C27 August 2024	22.5 °C	2,022 mm	11
2023	32.9 °C23 August 2023	15.6 °C15 July 2023	22.7 °C	1,830 mm	5
2022	31.2 °C27 January 2022	14.5 °C19 August 2022	21.8 °C	2,075 mm	2
2021	30.0 °C28 January 2021	11.2 °C30 July 2021	21.8 °C	1,809 mm	1
2020	31.0 °C2 October 2020	13.6 °C21 August 2020	22.2 °C	1,903 mm	3
2019	31.5 °C17 January 2019	13.8 °C6 July 2019	22.8 °C	2,078 mm	12
2018	31.1 °C2 January 2018	14.6 °C13 August 2018	22.2 °C	1,705 mm	1
2017	32.2 °C1 March 2017	12.9 °C18 July 2017	22.3 °C	1,478 mm	5
2016	32.9 °C25 April 2016	11.9 °C13 June 2016	22.0 °C	1,642 mm	7
2015	32.1 °C2 January 2015	15.5 °C27 July 2015	22.8 °C	2,137 mm	5
2014	31.3 °C3 January 2014	15.3 °C13 August 2014	22.4 °C	1,543 mm	2
2013	30.7 °C25 January 2013	12.4 °C23 July 2013	21.7 °C	2,126 mm	4
2012	33.3 °C11 December 2012	14.7 °C15 July 2012	22.0 °C	1,662 mm	4
2011	30.1 °C12 February 2011	13.4 °C4 August 2011	21.5 °C	1,912 mm	2
2010	31.5 °C8 February 2010	14.0 °C8 August 2010	22.0 °C	2,166 mm	9
2009	29.9 °C31 January 2009	14.6 °C4 June 2009	22.2 °C	2,009 mm	0
2008	29.6 °C19 January 2008	14.0 °C16 June 2008	21.5 °C	1,963 mm	0
2007	30.3 °C10 November 2007	12.7 °C27 July 2007	21.8 °C	1,445 mm	2
2006	32.4 °C15 September 2006	13.6 °C5 September 2006	22.1 °C	1,708 mm	3
2005	34.9 °C30 August 2005	15.7 °C9 August 2005	22.3 °C	1,853 mm	6
2004	29.7 °C2 February 2004	14.3 °C14 June 2004	21.7 °C	1,872 mm	0
2003	30.6 °C6 February 2003	13.8 °C18 August 2003	22.4 °C	1,598 mm	6
2002	30.5 °C28 January 2002	13.3 °C3 September 2002	22.6 °C	1,524 mm	5
2001	30.6 °C15 February 2001	13.4 °C28 July 2001	22.5 °C	1,448 mm	4
2000	30.8 °C4 February 2000	11.3 °C17 July 2000	21.7 °C	1,781 mm	3
1999	30.9 °C29 March 1999	12.1 °C15 August 1999	21.6 °C	1,872 mm	3
1998	31.3 °C28 January 1998	15.1 °C10 July 1998	22.2 °C	1,884 mm	8
1997	31.0 °C9 September 1997	14.4 °C8 June 1997	22.1 °C	1,834 mm	3
1996	30.4 °C3 April 1996	11.6 °C2 August 1996	21.5 °C	2,112 mm	3
1995	32.0 °C11 September 1995	14.7 °C5 August 1995	21.9 °C	2,351 mm	6
1994	31.9 °C4 December 1994	10.8 °C26 June 1994	22.0 °C	2,126 mm	4
1993	31.0 °C17 January 1993	12.3 °C1 August 1993	21.9 °C	1,859 mm	4
1992	29.4 °C4 January 1992	12.6 °C26 August 1992	21.5 °C	1,672 mm	0
1991	31.1 °C25 November 1991	12.4 °C2 August 1991	21.8 °C	1,866 mm	5
1990	30.9 °C19 December 1990	10.0 °C29 July 1990	21.6 °C	2,008 mm	1
1989	29.8 °C22 February 1989	13.2 °C8 July 1989	21.4 °C	1,711 mm	0
1988	30.5 °C22 January 1988	12.5 °C14 July 1988	21.3 °C	2,347 mm	2
1987	31.1 °C14 August 1987	13.3 °C8 August 1987	21.8 °C	1,777 mm	7
1986	31.0 °C1 February 1986	15.0 °C12 July 1986	22.3 °C	2,046 mm	4
1985	30.0 °C4 April 1985	13.0 °C8 June 1985	21.6 °C	1,667 mm	1
1984	30.7 °C14 January 1984	10.6 °C27 August 1984	21.6 °C	1,667 mm	2
1983	30.6 °C16 February 1983	12.3 °C7 August 1983	21.6 °C	2,666 mm	5
1982	29.8 °C22 February 1982	14.9 °C30 July 1982	21.7 °C	1,737 mm	0
1981	30.7 °C20 September 1981	11.6 °C21 July 1981	21.5 °C	2,012 mm	1
1980	30.6 °C24 January 1980	13.6 °C27 June 1980	21.9 °C	1,754 mm	3
1979	29.5 °C28 January 1979	12.2 °C31 May 1979	21.2 °C	2,037 mm	0
1978	31.9 °C2 February 1978	12.5 °C14 August 1978	21.8 °C	1,677 mm	3
1977	30.5 °C1 November 1977	15.1 °C17 May 1977	22.4 °C	2,091 mm	2
1976	31.8 °C15 December 1976	14.1 °C10 July 1976	21.6 °C	2,453 mm	2
1975	30.6 °C17 January 1975	11.3 °C17 July 1975	21.4 °C	1,877 mm	1
1974	31.8 °C26 September 1974	13.5 °C17 August 1974	21.5 °C	1,850 mm	2
1973	33.1 °C11 February 1973	14.4 °C1 August 1973	21.8 °C	2,134 mm	7
1972	29.9 °C2 February 1972	13.0 °C9 July 1972	21.9 °C	1,865 mm	0
1971	30.9 °C25 January 1971	13.8 °C7 July 1971	21.3 °C	1,794 mm	1
1970	32.7 °C9 December 1970	14.2 °C17 July 1970	21.5 °C	1,605 mm	1
1969	31.7 °C7 September 1969	12.5 °C10 July 1969	21.7 °C	1,522 mm	3
1968	31.1 °C23 December 1968	13.3 °C18 May 1968	20.9 °C	1,467 mm	5
1967	29.7 °C4 January 1967	15.5 °C9 June 1967	21.8 °C	1,953 mm	0
1966	29.8 °C21 January 1966	12.3 °C6 August 1966	21.6 °C	2,723 mm	0
1965	30.2 °C17 August 1965	12.4 °C12 July 1965	21.6 °C	2,366 mm	1
1964	29.0 °C17 February 1964	13.0 °C28 July 1964	21.0 °C	2,037 mm	0
1963	30.0 °C21 July 1963	14.2 °C6 August 1963	21.6 °C	1,964 mm	1
1962	30.2 °C18 February 1962	13.1 °C25 August 1962	20.8 °C	2,997 mm	1
1961	33.1 °C4 September 1961	14.2 °C15 June 1961	22.1 °C	1,829 mm	4
1960	29.4 °C9 October 1960	13.7 °C2 September 1960	21.2 °C	2,054 mm	0
1959	29.7 °C16 April 1959	15.3 °C8 June 1959	22.0 °C	1,573 mm	0
1958	31.8 °C17 February 1958	14.8 °C23 June 1958	21.8 °C	2,299 mm	4
1957	29.5 °C3 February 1957	13.3 °C21 July 1957	21.3 °C	2,014 mm	0
1956	30.0 °C26 January 1956	13.8 °C13 August 1956	20.9 °C	1,751 mm	1
1955	30.3 °C1 February 1955	12.3 °C30 July 1955	20.8 °C	1,716 mm	1
1954	30.1 °C12 January 1954	14.8 °C6 July 1954	21.8 °C	1,563 mm	1
1953	29.8 °C7 January 1953	14.7 °C11 July 1953	21.8 °C	1,991 mm	0
1952	29.9 °C31 March 1952	13.1 °C16 July 1952	21.4 °C	1,492 mm	0
1951	31.4 °C23 November 1951	15.3 °C15 July 1951	21.1 °C	2,014 mm	1
1950	29.8 °C19 February 1950	14.6 °C16 July 1950	21.4 °C	2,031 mm	0
1949	30.3 °C6 January 1949	14.0 °C16 August 1949	21.1 °C	2,308 mm	1
1948	29.1 °C16 May 1948	13.8 °C9 August 1948	21.2 °C	1,764 mm	0
1947	29.7 °C28 December 1947	12.8 °C2 September 1947	21.1 °C	2,470 mm	0
1946	29.3 °C14 January 1946	14.6 °C26 July 1946	21.9 °C	1,959 mm	0
1945	29.4 °C30 October 1945	14.9 °C12 July 1945	21.9 °C	2,451 mm	0
1944	29.4 °C25 June 1944	15.6 °C27 June 1944	21.8 °C	1,773 mm	0
1943	29.3 °C20 January 1943	14.2 °C24 August 1943	21.0 °C	1,684 mm	0
1942	31.6 °C6 October 1942	13.5 °C18 June 1942	21.1 °C	1,551 mm	1
1941	30.7 °C11 August 1941	13.9 °C26 June 1941	21.8 °C	2,709 mm	1
1940	30.1 °C22 August 1940	14.9 °C28 August 1940	22.0 °C	1,912 mm	1

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

23.6 °C

+0.4 °C

Hot days (≥ 30 °C)

11 d/yr

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1545 mm

-375 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	26.7 °C	+0.6 °C	209 mm	-15 mm
Feb	28.5 °C	+2.1 °C	162 mm	-54 mm
Mar	25.8 °C	+0.1 °C	84 mm	-134 mm
Apr	24.5 °C	+0.2 °C	234 mm	+74 mm
May	23.4 °C	+0.9 °C	86 mm	-48 mm
Jun	21.8 °C	+0.4 °C	143 mm	+36 mm
Jul	19.5 °C	-1.1 °C	79 mm	-24 mm
Aug	20.1 °C	-0.6 °C	125 mm	+30 mm
Sep	21.6 °C	+0.5 °C	71 mm	-69 mm
Oct	21.8 °C	-0.3 °C	139 mm	-33 mm
Nov	23.0 °C	-0.2 °C	120 mm	-39 mm
Dec	26.4 °C	+1.6 °C	93 mm	-99 mm

The year's extremes

Hottest day

33.7 °C

17 Feb 2025

Coldest day

13.6 °C

11 Aug 2025

Wettest day

58.4 mm

6 Aug 2025

Windiest day

45.8 km/h

18 Oct 2025

Strongest gust

61.9 km/h

23 Jun 2025

Hottest feels-like

41.6 °C

17 Feb 2025

Coldest feels-like

12.0 °C

25 Jun 2025

Sunniest day

13.5 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 Itanhaém?

Itanhaém has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 21.8 °C and it receives 1,920 mm of precipitation per year.

What is the hottest day ever recorded in Itanhaém?

The hottest day measured in Itanhaém between 1940 and 2025 was 30 August 2005, reaching 34.9 °C.

What is the coldest day in Itanhaém?

The coldest day measured in Itanhaém between 1940 and 2025 was 29 July 1990, at 10.0 °C.

Does it snow in Itanhaém?

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

Has the climate of Itanhaém warmed?

Yes: Itanhaém warmed by +0.9 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Itanhaém?

The wettest day measured in Itanhaém between 1940 and 2025 was 6 February 1994, with 224 mm of rain in 24 hours.

What was the windiest day in Itanhaém?

The windiest day measured in Itanhaém between 1940 and 2025 was 17 December 1947, with winds reaching 57.2 km/h.

What is the warmest month in Itanhaém?

The warmest month in Itanhaém is February (25.0 °C on average); the coldest is July (18.8 °C).

How much does it rain in Itanhaém?

Itanhaém receives on average 1,920 mm of precipitation per year, spread over about 203 rainy days.

Is it sunny in Itanhaém?

Itanhaém gets on average 9.1 hours of sunshine per day, roughly 3,322 hours per year over 1940-2025.

Are there tropical nights in Itanhaém?

Yes: Itanhaém has on average 200 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Itanhaém?

In Itanhaém, between 1940 and 2025, the highest apparent temperature reached 41.9 °C on 26 December 2012, and the lowest was 5.0 °C on 9 July 1994.

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