São Miguel do Iguaçu climate — normals and trends

Q: What is the climate of São Miguel do Iguaçu?

São Miguel do Iguaçu has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 21.9 °C and it receives 1,657 mm of precipitation per year.

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

The hottest day measured in São Miguel do Iguaçu between 1940 and 2025 was 2 October 2020, reaching 40.5 °C.

Q: What is the coldest day in São Miguel do Iguaçu?

The coldest day measured in São Miguel do Iguaçu between 1940 and 2025 was 18 July 1975, at -1.4 °C.

Q: Does it snow in São Miguel do Iguaçu?

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

Q: Has the climate of São Miguel do Iguaçu warmed?

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

Q: What is the wettest day in São Miguel do Iguaçu?

The wettest day measured in São Miguel do Iguaçu between 1940 and 2025 was 3 January 1971, with 140 mm of rain in 24 hours.

Q: What was the windiest day in São Miguel do Iguaçu?

The windiest day measured in São Miguel do Iguaçu between 1940 and 2025 was 15 September 1956, with winds reaching 52.8 km/h.

Q: What is the warmest month in São Miguel do Iguaçu?

The warmest month in São Miguel do Iguaçu is January (25.8 °C on average); the coldest is July (17.2 °C).

Q: How much does it rain in São Miguel do Iguaçu?

São Miguel do Iguaçu receives on average 1,657 mm of precipitation per year, spread over about 142 rainy days.

Q: Is it sunny in São Miguel do Iguaçu?

São Miguel do Iguaçu gets on average 9.5 hours of sunshine per day, roughly 3,468 hours per year over 1940-2025.

São Miguel do Iguaçu (Brazil) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 21.9 °C and it receives 1,657 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 (25.8 °C on average) and the coldest is July (17.2 °C). Rainfall peaks in October.

São Miguel do Iguaçu averages 0 frost days, 96 hot days (≥ 30 °C) and 142 rainy days per year.

São Miguel 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 40.5 °C (on 2 October 2020) and the coldest -1.4 °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

São Miguel do IguaçuParaná

coords: -25.35°, -54.24°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthJanuaryColdest monthJulyWettest monthOctoberDriest monthAugust

Mean daily temperature

21.9°C

Average daily high

26.7°C

Average daily low

18.1°C

Annual rainfall

1,657mm

Sunshine / day

9.5h

Mean relative humidity

76%

Average peak wind

14.6km/h

Seasonal range

8.6°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

96 d/yr

Rainy days (≥ 1 mm)

142 d/yr

Annual snowfall

0.0 cm

Average feels-like high

29.1 °C

Average feels-like low

18.7 °C

Average peak gust

31.7 km/h

Tropical nights (≥ 20 °C)

149 d/yr

Solar radiation

17.3 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.0 °C

since 1940

+0.1 °C per decade · r² = 0.27 · 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

40.5 °C

2 October 2020

Coldest day

-1.4 °C

18 July 1975

Wettest day

140 mm

3 January 1971

Windiest day

52.8 km/h

15 September 1956

Strongest gust

91.4 km/h

15 September 1956

Hottest feels-like

43.4 °C

9 January 2024

Coldest feels-like

-5.5 °C

18 July 1975

Snowiest day

0.1 cm

21 August 1965

Sunniest day

13.4 h

8 January 1942

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	37.2 °C2 March 2025	1.7 °C24 June 2025	22.1 °C	1,660 mm	124	0
2024	37.2 °C14 March 2024	4.5 °C10 August 2024	23.4 °C	1,208 mm	170	0
2023	37.6 °C26 September 2023	7.5 °C15 July 2023	22.8 °C	1,588 mm	113	0
2022	38.9 °C23 January 2022	3.4 °C12 June 2022	21.9 °C	1,720 mm	127	0
2021	37.6 °C20 September 2021	1.6 °C29 July 2021	22.5 °C	1,055 mm	135	0
2020	40.5 °C2 October 2020	3.4 °C21 August 2020	22.9 °C	1,083 mm	156	0
2019	37.5 °C16 September 2019	1.5 °C6 July 2019	23.2 °C	1,448 mm	128	0
2018	35.2 °C11 December 2018	5.4 °C14 June 2018	22.2 °C	1,465 mm	125	0
2017	36.5 °C20 September 2017	1.9 °C18 July 2017	22.8 °C	1,569 mm	122	0
2016	37.3 °C19 October 2016	3.1 °C12 June 2016	21.8 °C	1,684 mm	122	0
2015	37.2 °C15 October 2015	6.4 °C12 September 2015	22.8 °C	2,214 mm	113	0
2014	37.7 °C8 February 2014	6.1 °C14 August 2014	22.7 °C	1,930 mm	123	0
2013	35.2 °C10 November 2013	1.9 °C24 July 2013	21.7 °C	1,778 mm	98	0
2012	36.8 °C7 October 2012	1.9 °C8 June 2012	22.8 °C	1,333 mm	150	0
2011	36.9 °C21 December 2011	2.4 °C27 June 2011	22.0 °C	1,487 mm	115	0
2010	37.0 °C5 February 2010	3.2 °C14 July 2010	21.6 °C	1,916 mm	112	0
2009	36.8 °C3 November 2009	1.3 °C25 July 2009	21.9 °C	1,700 mm	130	0
2008	37.2 °C8 December 2008	3.2 °C17 June 2008	21.9 °C	1,454 mm	116	0
2007	36.0 °C28 October 2007	2.6 °C30 May 2007	22.3 °C	1,412 mm	145	0
2006	36.9 °C16 January 2006	3.8 °C22 August 2006	22.6 °C	1,233 mm	136	0
2005	37.9 °C12 March 2005	4.4 °C7 July 2005	22.5 °C	1,404 mm	147	0
2004	37.4 °C2 March 2004	3.9 °C13 June 2004	22.0 °C	1,512 mm	133	0
2003	37.7 °C12 November 2003	3.1 °C12 July 2003	22.1 °C	1,434 mm	125	0
2002	36.5 °C7 October 2002	4.1 °C2 September 2002	22.8 °C	1,740 mm	143	0
2001	34.6 °C28 January 2001	1.8 °C28 July 2001	22.5 °C	1,596 mm	118	0
2000	36.5 °C23 January 2000	0.7 °C13 July 2000	21.9 °C	1,672 mm	128	0
1999	36.3 °C20 December 1999	1.7 °C15 August 1999	21.9 °C	1,444 mm	129	0
1998	34.4 °C27 January 1998	6.4 °C25 June 1998	21.8 °C	2,470 mm	85	0
1997	35.4 °C26 December 1997	6.0 °C1 July 1997	22.2 °C	2,270 mm	95	0
1996	33.9 °C21 September 1996	3.8 °C22 July 1996	21.5 °C	2,111 mm	86	0
1995	35.3 °C17 December 1995	4.6 °C26 June 1995	22.2 °C	1,795 mm	105	0
1994	36.0 °C26 December 1994	2.1 °C9 July 1994	22.4 °C	1,869 mm	116	0
1993	35.8 °C3 December 1993	1.6 °C15 July 1993	21.6 °C	1,754 mm	115	0
1992	35.0 °C23 December 1992	2.2 °C23 July 1992	21.6 °C	1,999 mm	99	0
1991	36.5 °C22 January 1991	1.4 °C2 August 1991	22.4 °C	1,492 mm	133	0
1990	36.3 °C15 November 1990	2.2 °C29 July 1990	21.5 °C	2,174 mm	104	0
1989	34.7 °C6 December 1989	1.2 °C6 July 1989	21.2 °C	1,899 mm	82	0
1988	37.1 °C7 December 1988	1.0 °C12 July 1988	21.9 °C	1,501 mm	130	0
1987	35.8 °C11 October 1987	2.5 °C24 June 1987	21.7 °C	2,209 mm	105	0
1986	36.0 °C16 January 1986	4.0 °C5 September 1986	22.3 °C	1,825 mm	104	0
1985	40.0 °C17 November 1985	3.4 °C11 July 1985	22.3 °C	1,108 mm	130	0
1984	36.0 °C17 January 1984	2.1 °C26 August 1984	22.1 °C	1,765 mm	101	0
1983	34.4 °C25 February 1983	5.5 °C5 June 1983	21.4 °C	2,680 mm	101	0
1982	34.7 °C16 January 1982	5.9 °C30 July 1982	22.1 °C	1,694 mm	92	0
1981	34.5 °C1 March 1981	0.8 °C19 June 1981	21.7 °C	1,545 mm	106	0
1980	35.4 °C26 October 1980	2.9 °C17 September 1980	21.8 °C	1,762 mm	115	0
1979	36.8 °C27 January 1979	4.3 °C1 June 1979	21.3 °C	1,870 mm	87	0
1978	37.0 °C26 March 1978	4.0 °C14 August 1978	22.2 °C	1,131 mm	130	0
1977	36.4 °C12 March 1977	4.7 °C17 May 1977	22.6 °C	1,564 mm	119	0
1976	34.6 °C19 January 1976	1.7 °C10 July 1976	20.8 °C	1,427 mm	83	0
1975	36.1 °C13 February 1975	-1.4 °C18 July 1975	21.5 °C	1,420 mm	79	1
1974	34.2 °C26 December 1974	4.7 °C13 June 1974	21.2 °C	1,350 mm	85	0
1973	35.5 °C23 February 1973	5.7 °C28 June 1973	21.6 °C	1,849 mm	93	0
1972	36.0 °C27 October 1972	2.3 °C8 July 1972	21.7 °C	1,949 mm	83	0
1971	36.0 °C26 January 1971	3.7 °C14 June 1971	21.3 °C	1,728 mm	92	0
1970	36.7 °C8 December 1970	5.1 °C25 June 1970	21.9 °C	1,488 mm	98	0
1969	35.4 °C7 February 1969	4.1 °C9 July 1969	21.7 °C	1,338 mm	101	0
1968	37.0 °C25 November 1968	4.9 °C17 May 1968	21.3 °C	1,263 mm	102	0
1967	35.7 °C11 October 1967	3.3 °C14 June 1967	22.1 °C	1,539 mm	90	0
1966	34.2 °C24 January 1966	2.8 °C6 August 1966	21.4 °C	1,473 mm	76	0
1965	34.4 °C22 January 1965	3.1 °C11 July 1965	21.1 °C	1,799 mm	64	0
1964	35.7 °C13 March 1964	4.7 °C30 June 1964	21.0 °C	1,075 mm	87	0
1963	35.1 °C29 November 1963	2.5 °C6 August 1963	22.2 °C	1,536 mm	116	0
1962	34.5 °C24 December 1962	3.2 °C26 July 1962	20.4 °C	1,108 mm	81	0
1961	35.6 °C3 October 1961	2.2 °C16 June 1961	22.3 °C	1,286 mm	106	0
1960	36.6 °C10 December 1960	3.5 °C21 May 1960	21.1 °C	1,476 mm	89	0
1959	33.2 °C9 September 1959	6.1 °C10 June 1959	21.9 °C	1,590 mm	68	0
1958	35.7 °C5 January 1958	6.0 °C30 August 1958	21.8 °C	1,633 mm	79	0
1957	34.2 °C18 October 1957	5.2 °C21 July 1957	21.6 °C	1,814 mm	41	0
1956	33.1 °C4 February 1956	5.7 °C16 May 1956	20.8 °C	1,460 mm	31	0
1955	33.8 °C19 February 1955	1.7 °C31 July 1955	21.3 °C	1,755 mm	60	0
1954	34.2 °C10 December 1954	8.1 °C21 June 1954	21.7 °C	1,814 mm	50	0
1953	32.2 °C22 January 1953	7.5 °C6 July 1953	22.3 °C	1,744 mm	32	0
1952	35.5 °C12 December 1952	6.4 °C18 June 1952	21.7 °C	1,415 mm	54	0
1951	33.5 °C25 September 1951	7.9 °C29 August 1951	21.8 °C	1,628 mm	28	0
1950	32.2 °C2 September 1950	5.4 °C11 July 1950	21.4 °C	1,953 mm	17	0
1949	32.6 °C13 November 1949	4.7 °C14 May 1949	21.2 °C	2,229 mm	34	0
1948	33.1 °C24 September 1948	7.5 °C22 May 1948	21.5 °C	2,495 mm	23	0
1947	31.9 °C29 November 1947	5.9 °C10 July 1947	21.2 °C	1,993 mm	13	0
1946	31.0 °C3 January 1946	4.0 °C18 July 1946	21.3 °C	2,313 mm	10	0
1945	33.6 °C16 January 1945	5.5 °C24 June 1945	21.7 °C	1,648 mm	26	0
1944	34.3 °C30 January 1944	4.4 °C27 June 1944	23.2 °C	963 mm	89	0
1943	38.6 °C16 January 1943	5.3 °C29 August 1943	22.1 °C	711 mm	103	0
1942	40.2 °C26 November 1942	2.2 °C19 June 1942	21.9 °C	1,175 mm	112	0
1941	31.9 °C6 January 1941	4.0 °C18 July 1941	21.6 °C	2,493 mm	19	0
1940	32.0 °C21 March 1940	6.5 °C17 August 1940	21.5 °C	2,328 mm	29	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

27.2 °C

+0.5 °C

Hot days (≥ 30 °C)

124 d/yr

+28

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1660 mm

+3 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	32.6 °C	+2.3 °C	33 mm	-126 mm
Feb	33.0 °C	+3.0 °C	60 mm	-79 mm
Mar	31.7 °C	+2.3 °C	88 mm	-35 mm
Apr	25.6 °C	-1.2 °C	220 mm	+96 mm
May	25.3 °C	+1.8 °C	116 mm	-25 mm
Jun	20.3 °C	-1.5 °C	252 mm	+127 mm
Jul	22.9 °C	+0.7 °C	56 mm	-49 mm
Aug	23.6 °C	-0.6 °C	107 mm	+7 mm
Sep	27.0 °C	+1.1 °C	100 mm	-44 mm
Oct	26.5 °C	-1.1 °C	176 mm	-16 mm
Nov	28.8 °C	-0.1 °C	195 mm	+48 mm
Dec	29.7 °C	-0.2 °C	257 mm	+100 mm

The year's extremes

Hottest day

37.2 °C

2 Mar 2025

Coldest day

1.7 °C

24 Jun 2025

Wettest day

66.8 mm

12 Dec 2025

Windiest day

33.3 km/h

22 Sep 2025

Strongest gust

68.0 km/h

9 May 2025

Hottest feels-like

41.6 °C

18 Jan 2025

Coldest feels-like

-1.6 °C

24 Jun 2025

Sunniest day

13.2 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 São Miguel do Iguaçu?

São Miguel do Iguaçu has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 21.9 °C and it receives 1,657 mm of precipitation per year.

What is the hottest day ever recorded in São Miguel do Iguaçu?

The hottest day measured in São Miguel do Iguaçu between 1940 and 2025 was 2 October 2020, reaching 40.5 °C.

What is the coldest day in São Miguel do Iguaçu?

The coldest day measured in São Miguel do Iguaçu between 1940 and 2025 was 18 July 1975, at -1.4 °C.

Does it snow in São Miguel do Iguaçu?

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

Has the climate of São Miguel do Iguaçu warmed?

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

What is the wettest day in São Miguel do Iguaçu?

The wettest day measured in São Miguel do Iguaçu between 1940 and 2025 was 3 January 1971, with 140 mm of rain in 24 hours.

What was the windiest day in São Miguel do Iguaçu?

The windiest day measured in São Miguel do Iguaçu between 1940 and 2025 was 15 September 1956, with winds reaching 52.8 km/h.

What is the warmest month in São Miguel do Iguaçu?

The warmest month in São Miguel do Iguaçu is January (25.8 °C on average); the coldest is July (17.2 °C).

How much does it rain in São Miguel do Iguaçu?

São Miguel do Iguaçu receives on average 1,657 mm of precipitation per year, spread over about 142 rainy days.

Is it sunny in São Miguel do Iguaçu?

São Miguel do Iguaçu gets on average 9.5 hours of sunshine per day, roughly 3,468 hours per year over 1940-2025.

What is the biggest single-day snowfall in São Miguel do Iguaçu?

The heaviest 24-hour snowfall measured in São Miguel do Iguaçu between 1940 and 2025 was 21 August 1965, with 0.1 cm.

Are there tropical nights in São Miguel do Iguaçu?

Yes: São Miguel do Iguaçu has on average 149 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in São Miguel do Iguaçu?

In São Miguel do Iguaçu, between 1940 and 2025, the highest apparent temperature reached 43.4 °C on 9 January 2024, and the lowest was -5.5 °C on 18 July 1975.

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