Icó climate — normals and trends

Q: What is the climate of Icó?

Icó has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 27.6 °C and it receives 790 mm of precipitation per year.

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

The hottest day measured in Icó between 1940 and 2025 was 2 October 1997, reaching 38.9 °C.

Q: What is the coldest day in Icó?

The coldest day measured in Icó between 1940 and 2025 was 25 July 1975, at 16.9 °C.

Q: Does it snow in Icó?

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

Q: Has the climate of Icó warmed?

Yes: Icó warmed by +0.8 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Icó?

The wettest day measured in Icó between 1940 and 2025 was 9 March 1986, with 157 mm of rain in 24 hours.

Q: What was the windiest day in Icó?

The windiest day measured in Icó between 1940 and 2025 was 23 June 1942, with winds reaching 34.4 km/h.

Q: What is the warmest month in Icó?

The warmest month in Icó is November (29.4 °C on average); the coldest is April (26.2 °C).

Q: How much does it rain in Icó?

Icó receives on average 790 mm of precipitation per year, spread over about 94 rainy days.

Q: Is it sunny in Icó?

Icó gets on average 11.0 hours of sunshine per day, roughly 4,015 hours per year over 1940-2025.

Icó (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 27.6 °C and it receives 790 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 November (29.4 °C on average) and the coldest is April (26.2 °C). Rainfall peaks in March.

Icó averages 0 frost days, 308 hot days (≥ 30 °C) and 94 rainy days per year.

Icó has warmed by +0.8 °C between 1940 and 2025, or +0.09 °C per decade. This trend is statistically significant.

The hottest day of the period reached 38.9 °C (on 2 October 1997) and the coldest 16.9 °C (on 25 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

IcóCeará

coords: -6.40°, -38.86°
period: 1940–2025 · 86 yrs

AwTropical savannaWarmest monthNovemberColdest monthAprilWettest monthMarchDriest monthSeptember

Mean daily temperature

27.6°C

Average daily high

32.8°C

Average daily low

22.8°C

Annual rainfall

790mm

Sunshine / day

11.0h

Mean relative humidity

59%

Average peak wind

17.7km/h

Seasonal range

3.2°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

308 d/yr

Rainy days (≥ 1 mm)

94 d/yr

Annual snowfall

0.0 cm

Average feels-like high

34.6 °C

Average feels-like low

24.7 °C

Average peak gust

36.3 km/h

Tropical nights (≥ 20 °C)

356 d/yr

Solar radiation

21.9 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+0.8 °C

since 1940

+0.1 °C per decade · r² = 0.13 · 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

38.9 °C

2 October 1997

Coldest day

16.9 °C

25 July 1975

Wettest day

157 mm

9 March 1986

Windiest day

34.4 km/h

23 June 1942

Strongest gust

62.6 km/h

4 July 2017

Hottest feels-like

41.9 °C

11 March 2013

Coldest feels-like

15.9 °C

20 July 1967

Sunniest day

12.4 h

1 December 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	38.0 °C19 October 2025	19.3 °C3 July 2025	28.3 °C	407 mm	351
2024	37.6 °C10 October 2024	19.5 °C26 July 2024	28.2 °C	571 mm	353
2023	38.7 °C31 October 2023	19.9 °C22 July 2023	28.1 °C	541 mm	341
2022	37.9 °C8 October 2022	18.1 °C26 July 2022	27.1 °C	850 mm	314
2021	37.5 °C12 November 2021	18.9 °C2 August 2021	28.2 °C	493 mm	340
2020	37.5 °C7 November 2020	18.6 °C22 June 2020	27.7 °C	814 mm	344
2019	38.5 °C3 December 2019	19.5 °C30 July 2019	28.1 °C	803 mm	341
2018	37.9 °C20 October 2018	20.0 °C20 July 2018	28.1 °C	724 mm	331
2017	38.2 °C12 November 2017	18.9 °C13 July 2017	28.2 °C	659 mm	344
2016	38.2 °C5 December 2016	18.9 °C1 August 2016	28.7 °C	629 mm	349
2015	38.4 °C6 November 2015	19.0 °C13 August 2015	28.4 °C	487 mm	350
2014	37.0 °C18 January 2014	19.5 °C12 August 2014	27.8 °C	512 mm	344
2013	38.2 °C11 March 2013	19.8 °C24 June 2013	28.4 °C	467 mm	350
2012	37.5 °C31 October 2012	19.2 °C4 August 2012	28.6 °C	263 mm	357
2011	36.3 °C30 December 2011	18.6 °C27 July 2011	26.9 °C	1,065 mm	302
2010	37.5 °C14 March 2010	18.7 °C20 August 2010	28.0 °C	643 mm	344
2009	37.2 °C30 November 2009	19.2 °C17 August 2009	27.2 °C	1,256 mm	295
2008	36.9 °C7 January 2008	18.3 °C14 July 2008	27.2 °C	1,024 mm	281
2007	36.9 °C28 January 2007	18.5 °C18 August 2007	27.8 °C	590 mm	341
2006	37.5 °C9 November 2006	18.4 °C14 July 2006	27.7 °C	779 mm	319
2005	37.5 °C6 March 2005	19.5 °C13 July 2005	28.0 °C	517 mm	325
2004	37.8 °C8 January 2004	19.7 °C14 August 2004	27.6 °C	1,102 mm	302
2003	37.8 °C15 November 2003	20.1 °C16 July 2003	28.3 °C	663 mm	345
2002	37.3 °C14 December 2002	19.3 °C3 July 2002	27.6 °C	871 mm	314
2001	37.6 °C27 December 2001	19.1 °C4 August 2001	28.1 °C	643 mm	344
2000	37.5 °C15 November 2000	19.2 °C11 August 2000	27.2 °C	786 mm	318
1999	37.7 °C24 October 1999	19.0 °C28 May 1999	27.7 °C	783 mm	339
1998	38.5 °C9 March 1998	20.4 °C20 July 1998	29.2 °C	463 mm	361
1997	38.9 °C2 October 1997	18.9 °C12 June 1997	27.7 °C	627 mm	316
1996	37.7 °C24 December 1996	18.2 °C6 June 1996	27.3 °C	1,099 mm	298
1995	37.9 °C22 December 1995	18.3 °C13 July 1995	27.1 °C	1,076 mm	284
1994	37.4 °C3 January 1994	19.0 °C12 July 1994	27.1 °C	1,176 mm	268
1993	38.3 °C27 November 1993	19.7 °C18 July 1993	28.7 °C	341 mm	353
1992	38.1 °C5 December 1992	18.8 °C11 July 1992	27.8 °C	556 mm	339
1991	37.7 °C12 December 1991	18.0 °C29 July 1991	27.1 °C	953 mm	307
1990	36.9 °C25 November 1990	19.3 °C7 August 1990	27.8 °C	549 mm	345
1989	37.3 °C10 March 1989	18.5 °C3 August 1989	27.1 °C	1,359 mm	268
1988	36.7 °C19 January 1988	18.0 °C2 August 1988	27.3 °C	925 mm	310
1987	38.5 °C28 November 1987	20.6 °C1 July 1987	28.3 °C	540 mm	338
1986	37.3 °C21 January 1986	18.4 °C16 June 1986	26.8 °C	1,276 mm	281
1985	36.6 °C17 November 1985	18.3 °C26 July 1985	26.5 °C	1,628 mm	242
1984	38.0 °C26 February 1984	18.4 °C27 July 1984	27.6 °C	824 mm	313
1983	37.7 °C4 January 1983	20.1 °C29 July 1983	28.7 °C	425 mm	357
1982	38.0 °C24 November 1982	19.3 °C5 July 1982	27.7 °C	662 mm	338
1981	37.5 °C9 March 1981	18.1 °C31 July 1981	27.9 °C	744 mm	335
1980	37.6 °C23 September 1980	19.9 °C8 July 1980	28.0 °C	623 mm	338
1979	37.5 °C24 December 1979	19.5 °C17 June 1979	27.9 °C	491 mm	342
1978	36.8 °C13 November 1978	18.2 °C1 August 1978	26.9 °C	1,075 mm	291
1977	36.7 °C18 November 1977	18.7 °C13 July 1977	26.8 °C	1,226 mm	278
1976	37.5 °C28 December 1976	19.2 °C21 June 1976	27.2 °C	814 mm	337
1975	36.8 °C10 January 1975	16.9 °C25 July 1975	26.3 °C	1,161 mm	225
1974	36.3 °C6 January 1974	17.4 °C4 July 1974	26.2 °C	1,816 mm	205
1973	36.9 °C4 December 1973	19.5 °C31 July 1973	27.1 °C	1,253 mm	271
1972	36.9 °C24 October 1972	20.6 °C17 June 1972	27.5 °C	805 mm	315
1971	36.5 °C2 January 1971	19.1 °C10 July 1971	27.0 °C	994 mm	278
1970	37.4 °C15 October 1970	18.8 °C2 August 1970	28.0 °C	716 mm	341
1969	36.6 °C27 November 1969	18.9 °C27 July 1969	27.8 °C	708 mm	331
1968	36.5 °C13 November 1968	18.1 °C18 July 1968	26.6 °C	819 mm	271
1967	37.0 °C12 January 1967	17.4 °C20 July 1967	26.4 °C	1,342 mm	225
1966	36.8 °C7 December 1966	19.1 °C28 August 1966	27.3 °C	811 mm	281
1965	36.7 °C17 October 1965	19.6 °C27 July 1965	27.3 °C	619 mm	289
1964	35.7 °C9 November 1964	19.1 °C2 June 1964	26.3 °C	1,135 mm	205
1963	37.6 °C20 October 1963	19.3 °C8 July 1963	27.0 °C	1,074 mm	253
1962	37.4 °C21 October 1962	20.2 °C18 June 1962	27.9 °C	443 mm	341
1961	37.3 °C8 November 1961	19.0 °C13 August 1961	27.3 °C	871 mm	264
1960	37.5 °C23 January 1960	19.0 °C9 May 1960	27.5 °C	970 mm	290
1959	37.4 °C2 January 1959	18.8 °C27 July 1959	27.6 °C	708 mm	300
1958	37.7 °C26 January 1958	20.5 °C16 August 1958	28.7 °C	270 mm	355
1957	37.3 °C30 November 1957	18.4 °C6 June 1957	27.2 °C	1,096 mm	260
1956	36.7 °C28 January 1956	19.2 °C24 May 1956	27.5 °C	648 mm	292
1955	37.2 °C14 January 1955	18.9 °C10 August 1955	27.3 °C	678 mm	278
1954	37.0 °C1 January 1954	19.3 °C29 July 1954	27.3 °C	616 mm	297
1953	37.6 °C15 December 1953	20.2 °C21 June 1953	28.3 °C	388 mm	345
1952	36.9 °C27 January 1952	20.2 °C7 August 1952	27.4 °C	711 mm	295
1951	37.2 °C12 March 1951	19.0 °C15 July 1951	27.6 °C	615 mm	285
1950	36.9 °C3 January 1950	19.9 °C11 August 1950	27.2 °C	697 mm	282
1949	36.9 °C29 December 1949	19.1 °C1 August 1949	26.8 °C	1,203 mm	255
1948	36.7 °C8 December 1948	20.2 °C20 August 1948	27.5 °C	709 mm	315
1947	36.7 °C16 January 1947	19.7 °C16 August 1947	27.2 °C	878 mm	297
1946	37.3 °C7 December 1946	19.8 °C11 August 1946	28.3 °C	312 mm	356
1945	36.3 °C26 December 1945	18.2 °C15 June 1945	26.5 °C	1,110 mm	241
1944	36.4 °C9 November 1944	18.7 °C25 June 1944	26.5 °C	1,144 mm	219
1943	37.2 °C20 February 1943	19.4 °C16 August 1943	27.4 °C	555 mm	320
1942	36.6 °C8 October 1942	19.6 °C10 July 1942	28.4 °C	204 mm	354
1941	37.0 °C23 October 1941	19.9 °C23 July 1941	28.0 °C	476 mm	332
1940	36.6 °C21 December 1940	19.2 °C6 July 1940	26.6 °C	976 mm	237

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

33.7 °C

+0.9 °C

Hot days (≥ 30 °C)

351 d/yr

+43

Frost days (< 0 °C)

0 d/yr

Annual rainfall

407 mm

-383 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	32.7 °C	-0.6 °C	196 mm	+86 mm
Feb	32.9 °C	+0.9 °C	47 mm	-105 mm
Mar	32.2 °C	+1.2 °C	84 mm	-135 mm
Apr	32.7 °C	+2.0 °C	43 mm	-117 mm
May	33.0 °C	+2.0 °C	17 mm	-52 mm
Jun	32.5 °C	+1.3 °C	7 mm	-13 mm
Jul	32.9 °C	+1.2 °C	4 mm	-5 mm
Aug	33.5 °C	+0.5 °C	3 mm	+1 mm
Sep	34.6 °C	+0.2 °C	0 mm	-2 mm
Oct	35.7 °C	+0.5 °C	1 mm	-5 mm
Nov	36.0 °C	+0.7 °C	0 mm	-8 mm
Dec	35.4 °C	+0.7 °C	5 mm	-27 mm

The year's extremes

Hottest day

38.0 °C

19 Oct 2025

Coldest day

19.3 °C

3 Jul 2025

Wettest day

43.4 mm

19 Jan 2025

Windiest day

29.2 km/h

3 Sep 2025

Strongest gust

56.2 km/h

28 Sep 2025

Hottest feels-like

40.2 °C

8 Jan 2025

Coldest feels-like

18.5 °C

16 Jul 2025

Sunniest day

12.4 h

3 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 Icó?

Icó has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 27.6 °C and it receives 790 mm of precipitation per year.

What is the hottest day ever recorded in Icó?

The hottest day measured in Icó between 1940 and 2025 was 2 October 1997, reaching 38.9 °C.

What is the coldest day in Icó?

The coldest day measured in Icó between 1940 and 2025 was 25 July 1975, at 16.9 °C.

Does it snow in Icó?

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

Has the climate of Icó warmed?

Yes: Icó warmed by +0.8 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Icó?

The wettest day measured in Icó between 1940 and 2025 was 9 March 1986, with 157 mm of rain in 24 hours.

What was the windiest day in Icó?

The windiest day measured in Icó between 1940 and 2025 was 23 June 1942, with winds reaching 34.4 km/h.

What is the warmest month in Icó?

The warmest month in Icó is November (29.4 °C on average); the coldest is April (26.2 °C).

How much does it rain in Icó?

Icó receives on average 790 mm of precipitation per year, spread over about 94 rainy days.

Is it sunny in Icó?

Icó gets on average 11.0 hours of sunshine per day, roughly 4,015 hours per year over 1940-2025.

Are there tropical nights in Icó?

Yes: Icó has on average 356 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Icó?

In Icó, between 1940 and 2025, the highest apparent temperature reached 41.9 °C on 11 March 2013, and the lowest was 15.9 °C on 20 July 1967.

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