Guarujá climate — normals and trends

Q: What is the climate of Guarujá?

Guarujá has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 21.9 °C and it receives 1,929 mm of precipitation per year.

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

The hottest day measured in Guarujá between 1940 and 2025 was 19 September 2012, reaching 38.0 °C.

Q: What is the coldest day in Guarujá?

The coldest day measured in Guarujá between 1940 and 2025 was 29 July 1990, at 11.1 °C.

Q: Does it snow in Guarujá?

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

Q: Has the climate of Guarujá warmed?

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

Q: What is the wettest day in Guarujá?

The wettest day measured in Guarujá between 1940 and 2025 was 8 February 1951, with 349 mm of rain in 24 hours.

Q: What was the windiest day in Guarujá?

The windiest day measured in Guarujá between 1940 and 2025 was 17 December 1947, with winds reaching 54.4 km/h.

Q: What is the warmest month in Guarujá?

The warmest month in Guarujá is February (25.1 °C on average); the coldest is July (19.2 °C).

Q: How much does it rain in Guarujá?

Guarujá receives on average 1,929 mm of precipitation per year, spread over about 190 rainy days.

Q: Is it sunny in Guarujá?

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

Guarujá (Brazil) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 21.9 °C and it receives 1,929 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 (25.1 °C on average) and the coldest is July (19.2 °C). Rainfall peaks in January.

Guarujá averages 0 frost days, 4 hot days (≥ 30 °C) and 190 rainy days per year.

Guarujá 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 38.0 °C (on 19 September 2012) and the coldest 11.1 °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

GuarujáSão Paulo

coords: -23.99°, -46.26°
period: 1940–2025 · 86 yrs

AfTropical rainforestWarmest monthFebruaryColdest monthJulyWettest monthJanuaryDriest monthAugust

Mean daily temperature

21.9°C

Average daily high

23.4°C

Average daily low

20.6°C

Annual rainfall

1,929mm

Sunshine / day

9.4h

Mean relative humidity

85%

Average peak wind

18.7km/h

Seasonal range

5.9°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

4 d/yr

Rainy days (≥ 1 mm)

190 d/yr

Annual snowfall

0.0 cm

Average feels-like high

26.1 °C

Average feels-like low

22.1 °C

Average peak gust

29.5 km/h

Tropical nights (≥ 20 °C)

211 d/yr

Solar radiation

17.0 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+0.9 °C

since 1940

+0.1 °C per decade · r² = 0.34 · 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

38.0 °C

19 September 2012

Coldest day

11.1 °C

29 July 1990

Wettest day

349 mm

8 February 1951

Windiest day

54.4 km/h

17 December 1947

Strongest gust

76.7 km/h

10 August 2022

Hottest feels-like

42.0 °C

17 February 2025

Coldest feels-like

4.7 °C

21 July 1981

Sunniest day

13.5 h

27 December 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	33.8 °C17 February 2025	14.2 °C31 July 2025	22.2 °C	1,377 mm	13
2024	34.0 °C21 March 2024	12.0 °C27 August 2024	22.7 °C	2,120 mm	16
2023	33.4 °C15 February 2023	15.7 °C27 August 2023	22.9 °C	1,959 mm	10
2022	31.8 °C27 January 2022	14.6 °C19 August 2022	22.0 °C	2,083 mm	2
2021	33.1 °C14 September 2021	11.3 °C30 July 2021	21.9 °C	1,680 mm	2
2020	33.9 °C2 October 2020	13.8 °C22 August 2020	22.4 °C	1,984 mm	6
2019	32.6 °C25 February 2019	14.3 °C6 July 2019	23.0 °C	2,036 mm	16
2018	30.4 °C12 March 2018	14.9 °C11 July 2018	22.4 °C	1,751 mm	2
2017	31.9 °C1 March 2017	13.2 °C18 July 2017	22.4 °C	1,506 mm	5
2016	32.7 °C27 December 2016	11.6 °C13 June 2016	22.1 °C	1,862 mm	11
2015	32.0 °C2 January 2015	16.6 °C26 July 2015	23.0 °C	2,057 mm	8
2014	32.3 °C3 January 2014	15.1 °C14 August 2014	22.5 °C	1,664 mm	3
2013	32.0 °C13 March 2013	12.7 °C23 July 2013	21.9 °C	2,026 mm	6
2012	38.0 °C19 September 2012	15.2 °C15 July 2012	22.1 °C	1,779 mm	4
2011	30.7 °C17 August 2011	13.6 °C4 August 2011	21.7 °C	1,957 mm	1
2010	32.2 °C8 February 2010	14.1 °C16 August 2010	22.2 °C	2,048 mm	11
2009	31.2 °C14 May 2009	14.9 °C13 July 2009	22.4 °C	2,076 mm	5
2008	30.2 °C19 January 2008	14.5 °C16 June 2008	21.7 °C	1,898 mm	1
2007	31.8 °C26 April 2007	13.3 °C26 July 2007	22.0 °C	1,359 mm	7
2006	31.4 °C15 August 2006	13.9 °C5 September 2006	22.2 °C	1,672 mm	6
2005	33.8 °C30 August 2005	15.8 °C7 July 2005	22.4 °C	1,823 mm	5
2004	29.0 °C2 February 2004	14.3 °C8 August 2004	21.8 °C	2,129 mm	0
2003	31.0 °C16 December 2003	13.5 °C18 August 2003	22.5 °C	1,614 mm	5
2002	30.7 °C25 April 2002	13.7 °C2 September 2002	22.8 °C	1,434 mm	8
2001	30.9 °C15 February 2001	13.2 °C29 July 2001	22.5 °C	1,270 mm	5
2000	31.0 °C26 August 2000	12.4 °C17 July 2000	21.9 °C	1,907 mm	5
1999	31.5 °C8 September 1999	12.2 °C15 August 1999	21.7 °C	1,729 mm	6
1998	31.4 °C28 January 1998	14.7 °C10 July 1998	22.3 °C	1,863 mm	6
1997	32.9 °C9 September 1997	14.7 °C8 June 1997	22.2 °C	1,775 mm	4
1996	31.1 °C3 April 1996	12.7 °C2 August 1996	21.6 °C	1,924 mm	5
1995	32.0 °C11 September 1995	15.4 °C5 August 1995	22.1 °C	2,377 mm	5
1994	31.2 °C17 February 1994	11.4 °C9 July 1994	22.1 °C	1,965 mm	5
1993	32.9 °C31 August 1993	12.8 °C1 August 1993	22.1 °C	1,734 mm	7
1992	30.3 °C29 May 1992	13.3 °C23 July 1992	21.6 °C	1,986 mm	1
1991	32.1 °C16 October 1991	12.4 °C2 August 1991	21.9 °C	1,901 mm	3
1990	31.4 °C19 December 1990	11.1 °C29 July 1990	21.8 °C	1,990 mm	4
1989	31.2 °C24 September 1989	13.7 °C7 July 1989	21.5 °C	1,816 mm	4
1988	31.2 °C22 January 1988	12.5 °C13 July 1988	21.5 °C	2,368 mm	4
1987	31.9 °C14 August 1987	13.8 °C8 August 1987	22.1 °C	1,771 mm	10
1986	32.3 °C14 April 1986	15.7 °C12 July 1986	22.4 °C	2,111 mm	5
1985	31.4 °C4 April 1985	13.3 °C10 June 1985	21.8 °C	1,535 mm	2
1984	32.2 °C14 January 1984	11.2 °C26 August 1984	21.8 °C	1,689 mm	5
1983	31.9 °C12 March 1983	12.5 °C7 August 1983	21.9 °C	2,630 mm	11
1982	32.0 °C23 October 1982	14.8 °C31 July 1982	21.8 °C	1,831 mm	3
1981	30.3 °C21 December 1981	11.5 °C21 July 1981	21.6 °C	1,969 mm	3
1980	31.3 °C12 April 1980	13.6 °C17 September 1980	22.1 °C	1,749 mm	4
1979	29.8 °C14 December 1979	12.5 °C31 May 1979	21.4 °C	2,187 mm	0
1978	32.2 °C25 October 1978	12.6 °C14 August 1978	21.9 °C	1,639 mm	4
1977	31.5 °C31 July 1977	15.5 °C17 May 1977	22.5 °C	1,921 mm	6
1976	31.5 °C15 December 1976	14.3 °C10 July 1976	21.7 °C	2,526 mm	4
1975	31.4 °C17 January 1975	11.4 °C17 July 1975	21.5 °C	1,912 mm	4
1974	32.0 °C8 January 1974	13.8 °C17 August 1974	21.6 °C	1,828 mm	1
1973	32.8 °C11 February 1973	15.1 °C7 September 1973	22.1 °C	2,100 mm	9
1972	30.2 °C2 February 1972	14.2 °C9 July 1972	22.2 °C	1,919 mm	1
1971	30.3 °C3 December 1971	13.6 °C7 July 1971	21.5 °C	1,776 mm	3
1970	33.2 °C9 December 1970	14.3 °C2 September 1970	21.5 °C	1,617 mm	1
1969	33.9 °C16 February 1969	13.3 °C10 July 1969	21.9 °C	1,482 mm	7
1968	32.3 °C3 November 1968	12.8 °C18 May 1968	21.0 °C	1,440 mm	5
1967	29.8 °C4 January 1967	15.6 °C9 June 1967	21.9 °C	1,932 mm	0
1966	30.5 °C3 October 1966	13.0 °C7 August 1966	21.7 °C	3,064 mm	1
1965	30.4 °C2 September 1965	12.9 °C12 July 1965	21.8 °C	2,389 mm	1
1964	29.4 °C17 February 1964	13.0 °C29 July 1964	21.1 °C	1,902 mm	0
1963	30.6 °C26 November 1963	14.2 °C23 July 1963	21.8 °C	1,748 mm	2
1962	30.1 °C18 February 1962	14.1 °C27 July 1962	20.9 °C	3,203 mm	1
1961	33.5 °C30 August 1961	14.3 °C15 June 1961	22.2 °C	1,820 mm	4
1960	31.7 °C8 September 1960	13.5 °C2 September 1960	21.3 °C	2,156 mm	3
1959	30.4 °C10 April 1959	15.0 °C8 June 1959	22.2 °C	1,750 mm	2
1958	31.7 °C17 February 1958	14.5 °C23 June 1958	22.0 °C	2,150 mm	5
1957	29.9 °C7 January 1957	13.2 °C22 July 1957	21.5 °C	1,978 mm	0
1956	29.8 °C26 January 1956	13.9 °C26 August 1956	21.0 °C	1,700 mm	0
1955	30.5 °C5 March 1955	12.5 °C30 July 1955	21.0 °C	1,547 mm	2
1954	30.7 °C12 January 1954	14.6 °C6 July 1954	22.0 °C	1,792 mm	3
1953	30.2 °C6 January 1953	15.7 °C27 July 1953	21.9 °C	1,894 mm	1
1952	29.9 °C31 January 1952	13.1 °C16 July 1952	21.5 °C	1,558 mm	0
1951	31.4 °C23 November 1951	15.7 °C22 August 1951	21.3 °C	2,164 mm	2
1950	32.6 °C30 August 1950	14.5 °C3 August 1950	21.7 °C	2,154 mm	3
1949	30.4 °C6 January 1949	14.3 °C16 August 1949	21.2 °C	2,481 mm	1
1948	30.9 °C26 November 1948	14.1 °C9 August 1948	21.4 °C	1,678 mm	3
1947	29.7 °C28 December 1947	13.6 °C2 September 1947	21.2 °C	2,314 mm	0
1946	29.7 °C18 February 1946	15.2 °C26 July 1946	22.1 °C	2,147 mm	0
1945	31.5 °C28 September 1945	16.0 °C26 June 1945	22.0 °C	2,552 mm	1
1944	29.5 °C7 January 1944	15.7 °C27 June 1944	21.9 °C	1,767 mm	0
1943	29.9 °C20 January 1943	14.2 °C24 August 1943	21.0 °C	1,575 mm	0
1942	34.6 °C6 October 1942	13.6 °C19 June 1942	21.3 °C	1,537 mm	2
1941	30.7 °C2 September 1941	13.7 °C26 June 1941	22.1 °C	2,613 mm	2
1940	30.4 °C22 August 1940	15.6 °C25 September 1940	22.2 °C	2,183 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

+0.2 °C

Hot days (≥ 30 °C)

13 d/yr

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1377 mm

-552 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	26.5 °C	+0.5 °C	171 mm	-52 mm
Feb	28.5 °C	+2.2 °C	141 mm	-68 mm
Mar	25.5 °C	-0.1 °C	72 mm	-144 mm
Apr	24.4 °C	+0.1 °C	251 mm	+101 mm
May	23.6 °C	+0.9 °C	77 mm	-58 mm
Jun	22.2 °C	+0.4 °C	88 mm	-17 mm
Jul	19.6 °C	-1.4 °C	68 mm	-38 mm
Aug	20.3 °C	-0.8 °C	87 mm	-13 mm
Sep	21.7 °C	+0.3 °C	60 mm	-82 mm
Oct	22.0 °C	-0.2 °C	143 mm	-31 mm
Nov	23.1 °C	-0.1 °C	116 mm	-52 mm
Dec	26.4 °C	+1.7 °C	103 mm	-96 mm

The year's extremes

Hottest day

33.8 °C

17 Feb 2025

Coldest day

14.2 °C

31 Jul 2025

Wettest day

41.3 mm

6 Aug 2025

Windiest day

41.1 km/h

19 Oct 2025

Strongest gust

67.3 km/h

19 Oct 2025

Hottest feels-like

42.0 °C

17 Feb 2025

Coldest feels-like

11.3 °C

24 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 Guarujá?

Guarujá has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 21.9 °C and it receives 1,929 mm of precipitation per year.

What is the hottest day ever recorded in Guarujá?

The hottest day measured in Guarujá between 1940 and 2025 was 19 September 2012, reaching 38.0 °C.

What is the coldest day in Guarujá?

The coldest day measured in Guarujá between 1940 and 2025 was 29 July 1990, at 11.1 °C.

Does it snow in Guarujá?

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

Has the climate of Guarujá warmed?

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

What is the wettest day in Guarujá?

The wettest day measured in Guarujá between 1940 and 2025 was 8 February 1951, with 349 mm of rain in 24 hours.

What was the windiest day in Guarujá?

The windiest day measured in Guarujá between 1940 and 2025 was 17 December 1947, with winds reaching 54.4 km/h.

What is the warmest month in Guarujá?

The warmest month in Guarujá is February (25.1 °C on average); the coldest is July (19.2 °C).

How much does it rain in Guarujá?

Guarujá receives on average 1,929 mm of precipitation per year, spread over about 190 rainy days.

Is it sunny in Guarujá?

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

Are there tropical nights in Guarujá?

Yes: Guarujá has on average 211 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Guarujá?

In Guarujá, between 1940 and 2025, the highest apparent temperature reached 42.0 °C on 17 February 2025, and the lowest was 4.7 °C on 21 July 1981.

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