Foz do Iguaçu climate — normals and trends

Q: What is the climate of Foz do Iguaçu?

Foz do Iguaçu has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 21.8 °C and it receives 1,762 mm of precipitation per year.

Q: What is the hottest day ever recorded in Foz do Iguaçu?

The hottest day measured in Foz do Iguaçu between 1940 and 2025 was 26 November 1942, reaching 40.3 °C.

Q: What is the coldest day in Foz do Iguaçu?

The coldest day measured in Foz do Iguaçu between 1940 and 2025 was 18 July 1975, at -2.0 °C.

Q: Does it snow in Foz do Iguaçu?

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

Q: Has the climate of Foz do Iguaçu warmed?

Yes: Foz do Iguaçu warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Foz do Iguaçu?

The wettest day measured in Foz do Iguaçu between 1940 and 2025 was 30 September 1993, with 129 mm of rain in 24 hours.

Q: What was the windiest day in Foz do Iguaçu?

The windiest day measured in Foz do Iguaçu between 1940 and 2025 was 15 September 1956, with winds reaching 41.9 km/h.

Q: What is the warmest month in Foz do Iguaçu?

The warmest month in Foz do Iguaçu is January (26.0 °C on average); the coldest is July (16.9 °C).

Q: How much does it rain in Foz do Iguaçu?

Foz do Iguaçu receives on average 1,762 mm of precipitation per year, spread over about 141 rainy days.

Q: Is it sunny in Foz do Iguaçu?

Foz do Iguaçu gets on average 9.3 hours of sunshine per day, roughly 3,395 hours per year over 1940-2025.

Foz do Iguaçu (Brazil) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 21.8 °C and it receives 1,762 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 (26.0 °C on average) and the coldest is July (16.9 °C). Rainfall peaks in October.

Foz do Iguaçu averages 0 frost days, 104 hot days (≥ 30 °C) and 141 rainy days per year.

Foz do Iguaçu has warmed by +1.0 °C between 1940 and 2025, or +0.12 °C per decade. This trend is statistically significant.

The hottest day of the period reached 40.3 °C (on 26 November 1942) and the coldest -2.0 °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

Foz do IguaçuParaná

coords: -25.55°, -54.59°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthJanuaryColdest monthJulyWettest monthOctoberDriest monthAugust

Mean daily temperature

21.8°C

Average daily high

26.8°C

Average daily low

17.8°C

Annual rainfall

1,762mm

Sunshine / day

9.3h

Mean relative humidity

78%

Average peak wind

13.4km/h

Seasonal range

9.1°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

104 d/yr

Rainy days (≥ 1 mm)

141 d/yr

Annual snowfall

0.0 cm

Average feels-like high

29.5 °C

Average feels-like low

18.6 °C

Average peak gust

30.6 km/h

Tropical nights (≥ 20 °C)

141 d/yr

Solar radiation

17.2 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.0 °C

since 1940

+0.1 °C per decade · r² = 0.28 · 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

40.3 °C

26 November 1942

Coldest day

-2.0 °C

18 July 1975

Wettest day

129 mm

30 September 1993

Windiest day

41.9 km/h

15 September 1956

Strongest gust

85.3 km/h

5 June 1992

Hottest feels-like

44.2 °C

17 November 1985

Coldest feels-like

-5.8 °C

18 July 1975

Sunniest day

13.4 h

8 January 1959

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	37.4 °C2 March 2025	0.9 °C24 June 2025	22.0 °C	1,698 mm	127	0
2024	37.3 °C14 March 2024	3.7 °C10 August 2024	23.2 °C	1,219 mm	169	0
2023	37.7 °C24 September 2023	6.3 °C15 July 2023	22.7 °C	1,749 mm	122	0
2022	39.0 °C23 January 2022	2.7 °C12 June 2022	21.8 °C	1,576 mm	129	0
2021	38.6 °C20 September 2021	1.0 °C19 July 2021	22.4 °C	1,064 mm	143	0
2020	39.6 °C2 October 2020	3.4 °C21 August 2020	22.7 °C	1,135 mm	164	0
2019	38.0 °C30 October 2019	1.4 °C6 July 2019	23.0 °C	1,552 mm	135	0
2018	35.5 °C11 December 2018	4.9 °C14 June 2018	22.1 °C	1,583 mm	133	0
2017	36.5 °C20 September 2017	1.8 °C19 July 2017	22.7 °C	1,743 mm	125	0
2016	36.4 °C19 October 2016	1.8 °C12 June 2016	21.7 °C	1,668 mm	124	0
2015	38.3 °C20 October 2015	6.2 °C12 September 2015	22.8 °C	2,364 mm	113	0
2014	37.7 °C8 February 2014	5.1 °C14 August 2014	22.6 °C	2,044 mm	124	0
2013	35.6 °C10 November 2013	1.4 °C24 July 2013	21.6 °C	1,950 mm	106	0
2012	36.9 °C8 October 2012	0.8 °C8 June 2012	22.7 °C	1,366 mm	154	0
2011	37.2 °C21 December 2011	2.2 °C28 June 2011	21.9 °C	1,616 mm	121	0
2010	37.1 °C5 February 2010	2.9 °C14 July 2010	21.5 °C	1,992 mm	113	0
2009	37.4 °C19 November 2009	0.3 °C25 July 2009	21.8 °C	1,751 mm	143	0
2008	37.2 °C8 December 2008	2.6 °C17 June 2008	21.8 °C	1,453 mm	132	0
2007	36.5 °C28 October 2007	2.2 °C30 May 2007	22.1 °C	1,554 mm	144	0
2006	37.4 °C16 January 2006	2.9 °C5 September 2006	22.6 °C	1,357 mm	139	0
2005	37.9 °C12 March 2005	4.0 °C20 July 2005	22.5 °C	1,423 mm	152	0
2004	37.8 °C2 March 2004	3.2 °C13 June 2004	21.9 °C	1,510 mm	142	0
2003	37.4 °C12 November 2003	2.4 °C12 July 2003	22.0 °C	1,536 mm	122	0
2002	36.6 °C7 October 2002	3.8 °C2 September 2002	22.7 °C	1,817 mm	150	0
2001	35.1 °C20 December 2001	1.3 °C28 July 2001	22.4 °C	1,863 mm	127	0
2000	37.1 °C23 January 2000	0.4 °C17 July 2000	21.8 °C	1,766 mm	135	0
1999	37.2 °C20 December 1999	1.7 °C15 August 1999	21.8 °C	1,586 mm	137	0
1998	35.0 °C1 December 1998	5.7 °C25 June 1998	21.7 °C	2,645 mm	93	0
1997	35.8 °C26 December 1997	3.6 °C1 July 1997	22.2 °C	2,348 mm	110	0
1996	34.8 °C25 January 1996	2.7 °C30 June 1996	21.4 °C	2,379 mm	94	0
1995	36.1 °C17 December 1995	3.8 °C26 June 1995	22.1 °C	1,870 mm	120	0
1994	36.0 °C26 December 1994	2.0 °C9 July 1994	22.3 °C	1,931 mm	125	0
1993	35.8 °C5 January 1993	0.8 °C15 July 1993	21.5 °C	1,899 mm	124	0
1992	35.2 °C14 November 1992	1.5 °C19 July 1992	21.5 °C	2,109 mm	102	0
1991	36.9 °C21 January 1991	0.9 °C3 August 1991	22.2 °C	1,750 mm	132	0
1990	37.0 °C15 November 1990	0.8 °C29 July 1990	21.4 °C	2,347 mm	113	0
1989	34.9 °C6 December 1989	1.4 °C6 July 1989	21.0 °C	2,064 mm	88	0
1988	37.3 °C7 December 1988	0.7 °C12 July 1988	21.7 °C	1,643 mm	134	0
1987	36.3 °C11 October 1987	1.6 °C17 June 1987	21.6 °C	2,230 mm	112	0
1986	37.2 °C17 January 1986	3.2 °C5 September 1986	22.2 °C	2,053 mm	111	0
1985	40.2 °C19 December 1985	3.3 °C10 June 1985	22.2 °C	1,251 mm	138	0
1984	36.1 °C17 January 1984	1.4 °C26 August 1984	22.0 °C	1,887 mm	111	0
1983	34.6 °C15 December 1983	4.9 °C16 June 1983	21.4 °C	2,756 mm	107	0
1982	35.1 °C16 January 1982	5.3 °C30 July 1982	22.0 °C	1,792 mm	97	0
1981	35.0 °C1 March 1981	0.7 °C21 July 1981	21.6 °C	1,553 mm	115	0
1980	35.8 °C26 October 1980	2.3 °C27 June 1980	21.8 °C	1,859 mm	120	0
1979	37.2 °C26 January 1979	3.9 °C1 June 1979	21.2 °C	1,966 mm	97	0
1978	36.8 °C29 January 1978	3.7 °C1 June 1978	22.0 °C	1,218 mm	136	0
1977	36.9 °C12 March 1977	4.3 °C26 June 1977	22.5 °C	1,601 mm	125	0
1976	34.9 °C19 January 1976	1.8 °C10 July 1976	20.7 °C	1,476 mm	99	0
1975	36.2 °C13 February 1975	-2.0 °C18 July 1975	21.3 °C	1,511 mm	82	2
1974	34.7 °C26 December 1974	3.6 °C19 August 1974	21.0 °C	1,560 mm	95	0
1973	35.6 °C23 February 1973	4.7 °C28 June 1973	21.5 °C	1,956 mm	104	0
1972	36.3 °C26 October 1972	2.6 °C8 July 1972	21.7 °C	2,058 mm	91	0
1971	36.4 °C5 February 1971	3.1 °C14 June 1971	21.2 °C	1,765 mm	98	0
1970	37.3 °C8 December 1970	4.1 °C25 June 1970	21.8 °C	1,544 mm	115	0
1969	35.8 °C7 February 1969	4.5 °C9 July 1969	21.5 °C	1,501 mm	109	0
1968	36.6 °C2 November 1968	4.3 °C17 May 1968	21.1 °C	1,400 mm	102	0
1967	34.7 °C17 October 1967	2.3 °C14 June 1967	21.9 °C	1,685 mm	100	0
1966	34.6 °C24 January 1966	2.0 °C6 August 1966	21.3 °C	1,644 mm	81	0
1965	34.9 °C22 January 1965	2.3 °C11 July 1965	21.0 °C	2,052 mm	77	0
1964	35.8 °C30 January 1964	3.3 °C30 June 1964	20.9 °C	1,089 mm	95	0
1963	35.5 °C13 October 1963	1.6 °C6 August 1963	22.1 °C	1,733 mm	122	0
1962	35.9 °C24 December 1962	2.4 °C26 July 1962	20.4 °C	1,216 mm	87	0
1961	35.2 °C3 September 1961	1.6 °C16 June 1961	22.2 °C	1,351 mm	115	0
1960	36.4 °C10 December 1960	2.4 °C22 May 1960	21.0 °C	1,561 mm	99	0
1959	33.3 °C9 September 1959	5.8 °C10 June 1959	21.8 °C	1,689 mm	86	0
1958	36.5 °C16 February 1958	5.3 °C11 August 1958	21.7 °C	1,791 mm	83	0
1957	34.9 °C18 October 1957	4.0 °C21 July 1957	21.5 °C	1,975 mm	49	0
1956	33.3 °C4 February 1956	4.8 °C16 May 1956	20.7 °C	1,666 mm	47	0
1955	34.2 °C19 February 1955	0.6 °C31 July 1955	21.3 °C	1,866 mm	73	0
1954	34.3 °C10 December 1954	7.8 °C8 August 1954	21.6 °C	1,954 mm	64	0
1953	33.0 °C5 January 1953	6.0 °C20 July 1953	22.2 °C	1,876 mm	47	0
1952	35.9 °C12 December 1952	6.1 °C18 June 1952	21.6 °C	1,405 mm	67	0
1951	33.8 °C25 September 1951	7.4 °C9 July 1951	21.6 °C	1,827 mm	36	0
1950	32.2 °C2 September 1950	4.9 °C11 July 1950	21.4 °C	2,076 mm	26	0
1949	33.3 °C15 November 1949	4.5 °C14 May 1949	21.1 °C	2,207 mm	44	0
1948	33.1 °C24 September 1948	6.3 °C22 May 1948	21.5 °C	2,614 mm	25	0
1947	32.4 °C30 November 1947	5.8 °C10 July 1947	21.1 °C	2,040 mm	19	0
1946	31.8 °C3 January 1946	3.3 °C18 July 1946	21.3 °C	2,555 mm	21	0
1945	34.4 °C16 January 1945	3.7 °C24 June 1945	21.7 °C	1,762 mm	34	0
1944	34.4 °C30 January 1944	4.0 °C27 June 1944	23.0 °C	982 mm	105	0
1943	39.0 °C16 January 1943	4.5 °C24 August 1943	21.9 °C	814 mm	103	0
1942	40.3 °C26 November 1942	0.9 °C19 June 1942	21.7 °C	1,206 mm	126	0
1941	32.4 °C6 January 1941	3.3 °C18 July 1941	21.6 °C	2,601 mm	29	0
1940	32.3 °C21 March 1940	5.9 °C17 August 1940	21.4 °C	2,439 mm	38	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

27.4 °C

+0.6 °C

Hot days (≥ 30 °C)

127 d/yr

+23

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1698 mm

-64 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	33.1 °C	+2.4 °C	40 mm	-129 mm
Feb	33.3 °C	+3.0 °C	82 mm	-70 mm
Mar	31.8 °C	+2.2 °C	72 mm	-65 mm
Apr	25.9 °C	-1.0 °C	209 mm	+74 mm
May	25.2 °C	+1.7 °C	137 mm	-9 mm
Jun	20.2 °C	-1.6 °C	271 mm	+140 mm
Jul	22.9 °C	+0.8 °C	54 mm	-56 mm
Aug	23.7 °C	-0.4 °C	104 mm	+2 mm
Sep	27.0 °C	+1.1 °C	112 mm	-41 mm
Oct	26.5 °C	-1.2 °C	195 mm	-6 mm
Nov	29.1 °C	-0.1 °C	191 mm	+34 mm
Dec	30.1 °C	-0.2 °C	232 mm	+63 mm

The year's extremes

Hottest day

37.4 °C

2 Mar 2025

Coldest day

0.9 °C

24 Jun 2025

Wettest day

58.4 mm

12 Dec 2025

Windiest day

34.7 km/h

22 Sep 2025

Strongest gust

73.4 km/h

9 May 2025

Hottest feels-like

42.7 °C

18 Jan 2025

Coldest feels-like

-2.0 °C

24 Jun 2025

Sunniest day

13.4 h

8 Jan 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 Foz do Iguaçu?

Foz do Iguaçu has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 21.8 °C and it receives 1,762 mm of precipitation per year.

What is the hottest day ever recorded in Foz do Iguaçu?

The hottest day measured in Foz do Iguaçu between 1940 and 2025 was 26 November 1942, reaching 40.3 °C.

What is the coldest day in Foz do Iguaçu?

The coldest day measured in Foz do Iguaçu between 1940 and 2025 was 18 July 1975, at -2.0 °C.

Does it snow in Foz do Iguaçu?

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

Has the climate of Foz do Iguaçu warmed?

Yes: Foz do Iguaçu warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Foz do Iguaçu?

The wettest day measured in Foz do Iguaçu between 1940 and 2025 was 30 September 1993, with 129 mm of rain in 24 hours.

What was the windiest day in Foz do Iguaçu?

The windiest day measured in Foz do Iguaçu between 1940 and 2025 was 15 September 1956, with winds reaching 41.9 km/h.

What is the warmest month in Foz do Iguaçu?

The warmest month in Foz do Iguaçu is January (26.0 °C on average); the coldest is July (16.9 °C).

How much does it rain in Foz do Iguaçu?

Foz do Iguaçu receives on average 1,762 mm of precipitation per year, spread over about 141 rainy days.

Is it sunny in Foz do Iguaçu?

Foz do Iguaçu gets on average 9.3 hours of sunshine per day, roughly 3,395 hours per year over 1940-2025.

Are there tropical nights in Foz do Iguaçu?

Yes: Foz do Iguaçu has on average 141 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Foz do Iguaçu?

In Foz do Iguaçu, between 1940 and 2025, the highest apparent temperature reached 44.2 °C on 17 November 1985, and the lowest was -5.8 °C on 18 July 1975.

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