Jundiaí climate — normals and trends

Q: What is the climate of Jundiaí?

Jundiaí has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 19.9 °C and it receives 1,413 mm of precipitation per year.

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

The hottest day measured in Jundiaí between 1940 and 2025 was 7 October 2020, reaching 37.6 °C.

Q: What is the coldest day in Jundiaí?

The coldest day measured in Jundiaí between 1940 and 2025 was 1 June 1979, at 0.1 °C.

Q: Does it snow in Jundiaí?

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

Q: Has the climate of Jundiaí warmed?

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

Q: What is the wettest day in Jundiaí?

The wettest day measured in Jundiaí between 1940 and 2025 was 19 January 1977, with 169 mm of rain in 24 hours.

Q: What was the windiest day in Jundiaí?

The windiest day measured in Jundiaí between 1940 and 2025 was 10 December 2025, with winds reaching 40.2 km/h.

Q: What is the warmest month in Jundiaí?

The warmest month in Jundiaí is February (22.7 °C on average); the coldest is July (16.4 °C).

Q: How much does it rain in Jundiaí?

Jundiaí receives on average 1,413 mm of precipitation per year, spread over about 154 rainy days.

Q: Is it sunny in Jundiaí?

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

Jundiaí (Brazil) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 19.9 °C and it receives 1,413 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 (22.7 °C on average) and the coldest is July (16.4 °C). Rainfall peaks in January.

Jundiaí averages 0 frost days, 31 hot days (≥ 30 °C) and 154 rainy days per year.

Jundiaí 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 37.6 °C (on 7 October 2020) and the coldest 0.1 °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

JundiaíSão Paulo

coords: -23.19°, -46.88°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthFebruaryColdest monthJulyWettest monthJanuaryDriest monthAugust

Mean daily temperature

19.9°C

Average daily high

25.1°C

Average daily low

15.8°C

Annual rainfall

1,413mm

Sunshine / day

9.7h

Mean relative humidity

78%

Average peak wind

16.0km/h

Seasonal range

6.3°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

31 d/yr

Rainy days (≥ 1 mm)

154 d/yr

Annual snowfall

0.0 cm

Average feels-like high

26.7 °C

Average feels-like low

15.8 °C

Average peak gust

35.2 km/h

Tropical nights (≥ 20 °C)

28 d/yr

Solar radiation

17.5 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

37.6 °C

7 October 2020

Coldest day

0.1 °C

1 June 1979

Wettest day

169 mm

19 January 1977

Windiest day

40.2 km/h

10 December 2025

Strongest gust

89.3 km/h

22 September 2025

Hottest feels-like

41.0 °C

19 January 2015

Coldest feels-like

-3.4 °C

1 June 1979

Sunniest day

13.4 h

24 December 2025

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	35.0 °C26 December 2025	3.0 °C25 June 2025	20.5 °C	956 mm	77
2024	35.9 °C2 October 2024	4.3 °C27 August 2024	21.3 °C	1,304 mm	103
2023	36.6 °C24 September 2023	7.7 °C16 May 2023	20.9 °C	1,167 mm	70
2022	33.0 °C9 September 2022	3.3 °C20 May 2022	19.9 °C	1,342 mm	51
2021	35.2 °C20 September 2021	1.8 °C30 July 2021	20.3 °C	980 mm	67
2020	37.6 °C7 October 2020	4.8 °C27 May 2020	20.5 °C	1,114 mm	68
2019	36.8 °C27 October 2019	5.0 °C7 July 2019	21.4 °C	1,084 mm	92
2018	35.6 °C20 December 2018	6.0 °C21 May 2018	21.1 °C	992 mm	64
2017	34.5 °C12 October 2017	7.4 °C11 June 2017	21.1 °C	1,166 mm	84
2016	35.8 °C19 October 2016	4.0 °C13 June 2016	20.9 °C	1,391 mm	86
2015	37.4 °C20 January 2015	10.1 °C29 July 2015	21.7 °C	1,538 mm	77
2014	37.1 °C7 February 2014	8.8 °C3 June 2014	21.8 °C	872 mm	117
2013	36.8 °C27 December 2013	6.4 °C24 July 2013	20.2 °C	1,319 mm	51
2012	35.5 °C31 October 2012	5.9 °C14 July 2012	20.7 °C	1,397 mm	63
2011	34.0 °C30 September 2011	3.0 °C28 June 2011	20.2 °C	1,294 mm	60
2010	32.9 °C29 October 2010	7.0 °C7 June 2010	20.6 °C	1,275 mm	66
2009	32.8 °C6 March 2009	5.1 °C3 June 2009	20.5 °C	1,664 mm	37
2008	33.2 °C15 October 2008	7.4 °C17 July 2008	20.0 °C	1,368 mm	29
2007	34.3 °C21 October 2007	5.8 °C4 June 2007	20.6 °C	1,300 mm	55
2006	34.4 °C15 September 2006	5.9 °C6 September 2006	20.5 °C	1,117 mm	41
2005	33.2 °C14 October 2005	7.3 °C26 July 2005	20.6 °C	1,230 mm	27
2004	33.4 °C26 September 2004	7.2 °C9 August 2004	19.7 °C	1,344 mm	19
2003	34.0 °C24 September 2003	6.7 °C18 August 2003	20.5 °C	1,168 mm	50
2002	34.8 °C12 October 2002	4.2 °C3 September 2002	21.1 °C	1,124 mm	56
2001	32.2 °C8 November 2001	6.0 °C29 July 2001	20.5 °C	1,237 mm	29
2000	33.1 °C23 October 2000	1.6 °C18 July 2000	20.0 °C	1,391 mm	28
1999	33.5 °C1 October 1999	6.5 °C19 April 1999	19.8 °C	1,470 mm	34
1998	32.4 °C3 December 1998	6.8 °C9 June 1998	20.2 °C	1,534 mm	32
1997	33.4 °C9 September 1997	4.5 °C9 June 1997	20.4 °C	1,572 mm	34
1996	32.3 °C30 January 1996	5.9 °C13 July 1996	19.9 °C	1,691 mm	24
1995	32.4 °C25 February 1995	8.4 °C1 June 1995	20.2 °C	1,746 mm	39
1994	33.6 °C13 October 1994	1.3 °C26 June 1994	20.6 °C	1,363 mm	44
1993	32.6 °C2 January 1993	4.3 °C1 August 1993	20.2 °C	1,508 mm	28
1992	31.3 °C15 November 1992	7.4 °C26 August 1992	19.9 °C	1,420 mm	8
1991	31.8 °C8 November 1991	6.1 °C2 August 1991	19.9 °C	1,684 mm	10
1990	32.4 °C11 October 1990	2.6 °C23 June 1990	20.1 °C	1,410 mm	41
1989	31.8 °C25 October 1989	6.1 °C20 July 1989	19.6 °C	1,455 mm	10
1988	34.3 °C27 September 1988	0.5 °C6 June 1988	19.9 °C	1,467 mm	38
1987	32.3 °C23 February 1987	2.8 °C9 August 1987	20.0 °C	1,401 mm	27
1986	33.2 °C7 October 1986	6.5 °C5 June 1986	20.3 °C	1,464 mm	33
1985	35.9 °C17 November 1985	3.1 °C8 June 1985	20.0 °C	1,125 mm	34
1984	32.9 °C4 February 1984	3.7 °C27 August 1984	20.5 °C	1,164 mm	46
1983	31.4 °C17 February 1983	5.5 °C6 August 1983	20.0 °C	2,288 mm	9
1982	31.0 °C12 February 1982	8.1 °C31 July 1982	19.9 °C	1,810 mm	10
1981	32.0 °C20 September 1981	0.6 °C20 June 1981	19.6 °C	1,403 mm	19
1980	31.9 °C27 October 1980	5.8 °C23 September 1980	20.0 °C	1,393 mm	14
1979	31.7 °C7 February 1979	0.1 °C1 June 1979	19.3 °C	1,406 mm	18
1978	32.8 °C25 October 1978	3.2 °C2 June 1978	19.8 °C	1,241 mm	32
1977	32.1 °C13 March 1977	7.1 °C17 May 1977	20.6 °C	1,493 mm	28
1976	31.6 °C19 January 1976	5.9 °C16 August 1976	19.2 °C	2,074 mm	13
1975	32.4 °C10 September 1975	2.9 °C18 July 1975	19.8 °C	1,347 mm	27
1974	33.1 °C19 November 1974	5.1 °C17 August 1974	19.5 °C	1,512 mm	17
1973	33.0 °C22 February 1973	5.5 °C20 June 1973	20.0 °C	1,415 mm	25
1972	32.2 °C26 October 1972	3.7 °C9 July 1972	19.8 °C	1,649 mm	10
1971	34.0 °C25 January 1971	5.0 °C7 July 1971	19.6 °C	1,123 mm	43
1970	31.9 °C8 December 1970	7.2 °C3 July 1970	19.7 °C	1,157 mm	15
1969	32.3 °C30 January 1969	2.4 °C11 July 1969	20.1 °C	935 mm	30
1968	33.5 °C7 October 1968	3.1 °C18 May 1968	19.1 °C	965 mm	24
1967	31.8 °C9 October 1967	5.5 °C9 June 1967	19.9 °C	1,181 mm	17
1966	31.9 °C14 September 1966	5.1 °C6 August 1966	19.2 °C	1,611 mm	7
1965	32.3 °C19 September 1965	3.6 °C12 July 1965	19.0 °C	1,649 mm	8
1964	29.2 °C14 March 1964	6.4 °C6 June 1964	18.5 °C	1,629 mm	0
1963	36.1 °C17 October 1963	4.7 °C21 June 1963	20.1 °C	1,117 mm	46
1962	30.8 °C20 September 1962	4.0 °C7 July 1962	18.2 °C	1,741 mm	3
1961	36.9 °C27 September 1961	9.9 °C16 June 1961	20.4 °C	1,203 mm	43
1960	34.3 °C24 September 1960	6.1 °C15 July 1960	18.8 °C	1,478 mm	7
1959	31.8 °C11 October 1959	4.6 °C8 June 1959	19.8 °C	1,300 mm	16
1958	31.7 °C8 January 1958	5.1 °C23 June 1958	19.4 °C	1,511 mm	14
1957	32.1 °C19 October 1957	3.7 °C22 July 1957	19.0 °C	1,549 mm	5
1956	31.3 °C1 February 1956	5.5 °C6 June 1956	18.6 °C	1,154 mm	18
1955	34.4 °C1 October 1955	6.0 °C25 May 1955	19.0 °C	1,243 mm	16
1954	32.8 °C19 September 1954	5.8 °C22 June 1954	19.4 °C	1,591 mm	8
1953	30.9 °C21 August 1953	8.9 °C13 July 1953	19.5 °C	1,367 mm	2
1952	32.4 °C30 September 1952	4.9 °C16 July 1952	19.1 °C	1,242 mm	7
1951	31.4 °C26 September 1951	7.9 °C4 June 1951	19.2 °C	1,164 mm	9
1950	32.4 °C17 September 1950	7.3 °C15 July 1950	19.0 °C	1,770 mm	5
1949	30.0 °C13 October 1949	8.1 °C5 July 1949	18.7 °C	1,954 mm	1
1948	34.3 °C26 September 1948	7.3 °C15 June 1948	19.4 °C	1,318 mm	15
1947	30.8 °C8 January 1947	4.9 °C4 August 1947	18.6 °C	1,883 mm	6
1946	29.1 °C19 October 1946	6.1 °C17 June 1946	19.4 °C	2,122 mm	0
1945	29.9 °C28 September 1945	9.0 °C26 June 1945	19.2 °C	2,357 mm	0
1944	33.9 °C7 September 1944	7.5 °C15 July 1944	19.6 °C	1,399 mm	17
1943	30.0 °C17 January 1943	7.6 °C8 August 1943	18.5 °C	1,161 mm	1
1942	35.6 °C27 November 1942	3.9 °C24 June 1942	19.0 °C	946 mm	28
1941	29.7 °C11 January 1941	7.2 °C4 September 1941	19.3 °C	2,270 mm	0
1940	31.2 °C23 August 1940	9.3 °C19 August 1940	19.6 °C	1,754 mm	4

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

26.4 °C

+1.3 °C

Hot days (≥ 30 °C)

77 d/yr

+46

Frost days (< 0 °C)

0 d/yr

Annual rainfall

956 mm

-457 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	28.2 °C	+1.0 °C	183 mm	-42 mm
Feb	30.0 °C	+2.6 °C	109 mm	-71 mm
Mar	29.5 °C	+2.7 °C	82 mm	-64 mm
Apr	25.7 °C	+0.4 °C	109 mm	+37 mm
May	24.8 °C	+1.8 °C	17 mm	-53 mm
Jun	22.7 °C	+0.6 °C	45 mm	-7 mm
Jul	22.1 °C	-0.1 °C	7 mm	-40 mm
Aug	24.7 °C	+0.7 °C	15 mm	-26 mm
Sep	26.9 °C	+1.5 °C	20 mm	-64 mm
Oct	25.8 °C	+0.1 °C	106 mm	-33 mm
Nov	26.5 °C	+0.5 °C	86 mm	-63 mm
Dec	29.5 °C	+3.0 °C	177 mm	-31 mm

The year's extremes

Hottest day

35.0 °C

26 Dec 2025

Coldest day

3.0 °C

25 Jun 2025

Wettest day

50.1 mm

9 Dec 2025

Windiest day

40.2 km/h

10 Dec 2025

Strongest gust

89.3 km/h

22 Sep 2025

Hottest feels-like

39.5 °C

28 Dec 2025

Coldest feels-like

0.0 °C

25 Jun 2025

Sunniest day

13.4 h

24 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 Jundiaí?

Jundiaí has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 19.9 °C and it receives 1,413 mm of precipitation per year.

What is the hottest day ever recorded in Jundiaí?

The hottest day measured in Jundiaí between 1940 and 2025 was 7 October 2020, reaching 37.6 °C.

What is the coldest day in Jundiaí?

The coldest day measured in Jundiaí between 1940 and 2025 was 1 June 1979, at 0.1 °C.

Does it snow in Jundiaí?

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

Has the climate of Jundiaí warmed?

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

What is the wettest day in Jundiaí?

The wettest day measured in Jundiaí between 1940 and 2025 was 19 January 1977, with 169 mm of rain in 24 hours.

What was the windiest day in Jundiaí?

The windiest day measured in Jundiaí between 1940 and 2025 was 10 December 2025, with winds reaching 40.2 km/h.

What is the warmest month in Jundiaí?

The warmest month in Jundiaí is February (22.7 °C on average); the coldest is July (16.4 °C).

How much does it rain in Jundiaí?

Jundiaí receives on average 1,413 mm of precipitation per year, spread over about 154 rainy days.

Is it sunny in Jundiaí?

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

Are there tropical nights in Jundiaí?

Yes: Jundiaí has on average 28 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Jundiaí?

In Jundiaí, between 1940 and 2025, the highest apparent temperature reached 41.0 °C on 19 January 2015, and the lowest was -3.4 °C on 1 June 1979.

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