Tres Isletas climate — normals and trends

Q: What is the climate of Tres Isletas?

Tres Isletas has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 21.9 °C and it receives 1,172 mm of precipitation per year.

Q: What is the hottest day ever recorded in Tres Isletas?

The hottest day measured in Tres Isletas between 1940 and 2025 was 16 October 2014, reaching 47.8 °C.

Q: What is the coldest day in Tres Isletas?

The coldest day measured in Tres Isletas between 1940 and 2025 was 29 July 2021, at -3.8 °C.

Q: Does it snow in Tres Isletas?

Almost never: Tres Isletas sees virtually no snow, with about 1 frost days per year.

Q: Has the climate of Tres Isletas warmed?

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

Q: What is the wettest day in Tres Isletas?

The wettest day measured in Tres Isletas between 1940 and 2025 was 10 November 2004, with 185 mm of rain in 24 hours.

Q: What was the windiest day in Tres Isletas?

The windiest day measured in Tres Isletas between 1940 and 2025 was 3 February 2010, with winds reaching 38.2 km/h.

Q: What is the warmest month in Tres Isletas?

The warmest month in Tres Isletas is January (27.4 °C on average); the coldest is July (15.9 °C).

Q: How much does it rain in Tres Isletas?

Tres Isletas receives on average 1,172 mm of precipitation per year, spread over about 112 rainy days.

Q: Is it sunny in Tres Isletas?

Tres Isletas gets on average 9.2 hours of sunshine per day, roughly 3,358 hours per year over 1940-2025.

Tres Isletas (Argentina) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 21.9 °C and it receives 1,172 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 (27.4 °C on average) and the coldest is July (15.9 °C). Rainfall peaks in March.

Tres Isletas averages 1 frost days, 138 hot days (≥ 30 °C) and 112 rainy days per year.

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

The number of frost days there went from about 0 to 2 per year over the period.

The hottest day of the period reached 47.8 °C (on 16 October 2014) and the coldest -3.8 °C (on 29 July 2021).

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

Tres IsletasChaco

coords: -26.34°, -60.43°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthJanuaryColdest monthJulyWettest monthMarchDriest monthJuly

Mean daily temperature

21.9°C

Average daily high

27.5°C

Average daily low

17.0°C

Annual rainfall

1,172mm

Sunshine / day

9.2h

Mean relative humidity

71%

Average peak wind

15.2km/h

Seasonal range

11.5°C

Frost days (< 0 °C)

1 d/yr

Hot days (≥ 30 °C)

138 d/yr

Rainy days (≥ 1 mm)

112 d/yr

Annual snowfall

0.0 cm

Average feels-like high

29.2 °C

Average feels-like low

17.3 °C

Average peak gust

33.8 km/h

Tropical nights (≥ 20 °C)

132 d/yr

Solar radiation

17.3 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+0.8 °C

since 1940

+0.1 °C per decade · r² = 0.12 · 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

47.8 °C

16 October 2014

Coldest day

-3.8 °C

29 July 2021

Wettest day

185 mm

10 November 2004

Windiest day

38.2 km/h

3 February 2010

Strongest gust

84.2 km/h

28 August 2002

Hottest feels-like

48.3 °C

19 November 2009

Coldest feels-like

-7.9 °C

29 July 2021

Snowiest day

1.3 cm

11 August 1949

Sunniest day

13.7 h

17 December 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	40.6 °C18 January 2025	-1.2 °C3 July 2025	22.1 °C	936 mm	140	3
2024	41.5 °C3 February 2024	-1.6 °C14 July 2024	22.8 °C	920 mm	197	4
2023	45.2 °C16 October 2023	0.4 °C14 June 2023	23.2 °C	782 mm	179	0
2022	41.8 °C1 January 2022	-0.4 °C17 July 2022	21.8 °C	633 mm	169	1
2021	41.5 °C19 September 2021	-3.8 °C29 July 2021	22.0 °C	715 mm	170	5
2020	42.6 °C25 November 2020	-1.9 °C21 August 2020	22.9 °C	621 mm	200	2
2019	40.8 °C28 October 2019	1.1 °C6 July 2019	22.1 °C	963 mm	140	0
2018	43.4 °C23 September 2018	0.4 °C10 August 2018	22.3 °C	1,030 mm	175	0
2017	42.8 °C18 October 2017	-3.5 °C18 July 2017	22.5 °C	1,141 mm	155	2
2016	40.1 °C12 September 2016	0.2 °C12 June 2016	21.2 °C	1,231 mm	134	0
2015	38.3 °C10 January 2015	4.1 °C19 June 2015	22.6 °C	1,346 mm	155	0
2014	47.8 °C16 October 2014	0.2 °C25 July 2014	22.7 °C	1,253 mm	146	0
2013	41.1 °C1 February 2013	-1.2 °C24 July 2013	22.4 °C	799 mm	163	2
2012	44.1 °C27 October 2012	-1.8 °C8 June 2012	22.9 °C	825 mm	181	3
2011	41.9 °C21 December 2011	-1.5 °C27 June 2011	21.7 °C	1,000 mm	138	2
2010	41.3 °C7 February 2010	-0.6 °C14 July 2010	21.2 °C	1,183 mm	147	1
2009	44.3 °C2 November 2009	-0.9 °C24 July 2009	22.5 °C	928 mm	186	1
2008	40.5 °C13 October 2008	-0.6 °C30 May 2008	22.1 °C	925 mm	167	1
2007	42.5 °C10 January 2007	-2.0 °C11 July 2007	21.6 °C	1,110 mm	161	2
2006	40.2 °C27 September 2006	2.0 °C31 July 2006	22.5 °C	1,191 mm	160	0
2005	41.5 °C13 October 2005	0.4 °C19 July 2005	21.9 °C	1,000 mm	157	0
2004	40.6 °C3 November 2004	1.2 °C12 June 2004	21.9 °C	970 mm	163	0
2003	41.8 °C23 November 2003	1.5 °C11 July 2003	22.0 °C	1,396 mm	135	0
2002	40.0 °C6 October 2002	2.0 °C19 June 2002	21.9 °C	1,429 mm	144	0
2001	39.5 °C26 October 2001	0.2 °C28 July 2001	22.3 °C	977 mm	167	0
2000	39.8 °C20 September 2000	-2.1 °C13 July 2000	21.0 °C	1,668 mm	122	3
1999	41.8 °C12 October 1999	0.2 °C15 August 1999	21.6 °C	1,057 mm	163	0
1998	43.0 °C21 January 1998	3.2 °C11 July 1998	21.3 °C	1,328 mm	113	0
1997	42.3 °C12 October 1997	1.9 °C8 June 1997	22.9 °C	1,120 mm	177	0
1996	39.0 °C21 September 1996	-1.9 °C29 June 1996	21.2 °C	1,599 mm	120	1
1995	42.2 °C25 October 1995	-1.2 °C21 July 1995	21.7 °C	1,132 mm	150	1
1994	41.5 °C20 September 1994	-2.2 °C10 July 1994	22.1 °C	1,347 mm	153	2
1993	40.7 °C6 September 1993	-1.8 °C1 August 1993	21.3 °C	1,232 mm	141	4
1992	38.0 °C8 February 1992	-0.2 °C19 July 1992	20.7 °C	1,505 mm	103	1
1991	39.7 °C4 February 1991	-1.4 °C2 August 1991	21.6 °C	1,641 mm	126	1
1990	40.5 °C15 November 1990	-0.5 °C24 July 1990	21.5 °C	1,257 mm	135	1
1989	39.6 °C24 October 1989	-2.0 °C6 July 1989	21.7 °C	1,326 mm	136	3
1988	43.2 °C11 November 1988	-1.3 °C24 July 1988	21.7 °C	861 mm	168	4
1987	41.5 °C11 October 1987	-0.7 °C16 June 1987	20.9 °C	1,638 mm	127	1
1986	42.1 °C29 January 1986	2.7 °C22 July 1986	22.2 °C	1,959 mm	136	0
1985	41.3 °C16 November 1985	-0.8 °C6 July 1985	22.1 °C	1,239 mm	145	1
1984	38.4 °C24 February 1984	0.6 °C27 June 1984	21.4 °C	1,339 mm	122	0
1983	40.0 °C10 March 1983	1.3 °C2 August 1983	21.5 °C	931 mm	150	0
1982	40.0 °C16 January 1982	2.6 °C29 June 1982	21.9 °C	1,244 mm	130	0
1981	37.7 °C30 October 1981	-1.1 °C18 June 1981	21.5 °C	1,287 mm	137	2
1980	39.9 °C18 January 1980	0.3 °C3 July 1980	22.1 °C	1,317 mm	157	0
1979	42.1 °C22 October 1979	0.5 °C20 July 1979	21.9 °C	980 mm	133	0
1978	41.0 °C29 December 1978	0.9 °C14 August 1978	22.4 °C	977 mm	164	0
1977	42.0 °C31 October 1977	0.7 °C25 June 1977	22.7 °C	882 mm	155	0
1976	40.3 °C19 January 1976	-0.7 °C10 July 1976	21.6 °C	860 mm	150	1
1975	40.5 °C14 February 1975	-1.6 °C18 July 1975	21.4 °C	1,320 mm	113	3
1974	43.1 °C25 November 1974	2.5 °C8 August 1974	21.8 °C	899 mm	148	0
1973	40.9 °C2 February 1973	2.4 °C27 June 1973	21.4 °C	1,325 mm	130	0
1972	42.9 °C3 January 1972	0.5 °C8 July 1972	21.8 °C	1,334 mm	143	0
1971	41.8 °C28 December 1971	0.5 °C12 June 1971	21.8 °C	1,111 mm	157	0
1970	44.7 °C8 December 1970	0.4 °C8 July 1970	22.6 °C	1,235 mm	165	0
1969	42.0 °C7 February 1969	0.6 °C19 June 1969	21.9 °C	1,602 mm	145	0
1968	43.4 °C11 December 1968	1.3 °C17 May 1968	22.1 °C	1,342 mm	143	0
1967	41.2 °C1 December 1967	1.8 °C14 June 1967	22.0 °C	1,422 mm	152	0
1966	42.3 °C6 November 1966	-0.1 °C5 August 1966	21.7 °C	988 mm	124	1
1965	39.5 °C23 November 1965	-1.7 °C11 July 1965	21.7 °C	1,042 mm	134	3
1964	42.0 °C6 January 1964	-0.5 °C30 June 1964	21.7 °C	734 mm	154	2
1963	43.7 °C27 November 1963	1.0 °C17 June 1963	22.8 °C	986 mm	152	0
1962	42.3 °C28 November 1962	-1.9 °C17 July 1962	20.7 °C	834 mm	142	1
1961	39.1 °C17 January 1961	-1.2 °C16 June 1961	22.2 °C	1,110 mm	140	2
1960	38.3 °C9 December 1960	-0.2 °C8 July 1960	21.3 °C	1,043 mm	144	1
1959	36.5 °C8 September 1959	3.7 °C11 June 1959	21.1 °C	1,802 mm	108	0
1958	40.8 °C11 February 1958	0.3 °C10 August 1958	21.8 °C	1,207 mm	125	0
1957	39.0 °C8 October 1957	-1.7 °C20 July 1957	21.5 °C	1,098 mm	129	2
1956	34.9 °C28 December 1956	3.7 °C20 September 1956	20.1 °C	1,689 mm	61	0
1955	36.6 °C10 February 1955	-0.7 °C31 July 1955	20.5 °C	1,456 mm	87	1
1954	35.9 °C1 December 1954	3.7 °C6 August 1954	20.7 °C	1,442 mm	80	0
1953	40.1 °C5 January 1953	5.2 °C30 July 1953	22.0 °C	1,355 mm	84	0
1952	38.0 °C23 December 1952	4.5 °C15 June 1952	21.4 °C	1,033 mm	99	0
1951	37.1 °C24 September 1951	5.5 °C28 June 1951	21.8 °C	1,519 mm	73	0
1950	37.1 °C9 November 1950	2.0 °C4 August 1950	21.3 °C	1,097 mm	96	0
1949	37.4 °C14 November 1949	1.8 °C11 August 1949	21.0 °C	1,290 mm	87	0
1948	36.9 °C22 September 1948	5.1 °C22 May 1948	21.5 °C	1,354 mm	82	0
1947	33.8 °C1 February 1947	2.8 °C11 July 1947	21.0 °C	1,432 mm	63	0
1946	38.2 °C2 January 1946	2.1 °C18 July 1946	21.0 °C	1,584 mm	84	0
1945	40.9 °C15 January 1945	1.5 °C24 June 1945	22.8 °C	911 mm	140	0
1944	38.2 °C21 December 1944	2.2 °C7 July 1944	22.9 °C	1,027 mm	133	0
1943	41.2 °C1 January 1943	4.8 °C31 August 1943	23.0 °C	804 mm	155	0
1942	41.2 °C25 November 1942	0.6 °C19 June 1942	22.1 °C	763 mm	150	0
1941	35.8 °C16 February 1941	3.1 °C25 June 1941	21.0 °C	1,313 mm	82	0
1940	34.4 °C25 December 1940	5.8 °C27 August 1940	20.8 °C	1,225 mm	81	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

28.3 °C

+0.8 °C

Hot days (≥ 30 °C)

140 d/yr

Frost days (< 0 °C)

3 d/yr

Annual rainfall

936 mm

-236 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	35.9 °C	+2.8 °C	30 mm	-106 mm
Feb	37.0 °C	+5.1 °C	63 mm	-70 mm
Mar	31.6 °C	+1.5 °C	102 mm	-37 mm
Apr	25.2 °C	-1.3 °C	42 mm	-79 mm
May	24.4 °C	+1.1 °C	143 mm	+74 mm
Jun	18.3 °C	-2.7 °C	54 mm	+6 mm
Jul	23.4 °C	+1.7 °C	4 mm	-30 mm
Aug	24.8 °C	+0.6 °C	53 mm	+10 mm
Sep	26.4 °C	0.0 °C	121 mm	+50 mm
Oct	28.3 °C	-0.5 °C	97 mm	-23 mm
Nov	31.3 °C	+0.7 °C	55 mm	-77 mm
Dec	32.9 °C	+0.5 °C	171 mm	+46 mm

The year's extremes

Hottest day

40.6 °C

18 Jan 2025

Coldest day

-1.2 °C

3 Jul 2025

Wettest day

65.5 mm

22 Dec 2025

Windiest day

32.6 km/h

1 Aug 2025

Strongest gust

73.1 km/h

1 Aug 2025

Hottest feels-like

46.5 °C

6 Feb 2025

Coldest feels-like

-4.8 °C

3 Jul 2025

Sunniest day

13.7 h

17 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 Tres Isletas?

Tres Isletas has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 21.9 °C and it receives 1,172 mm of precipitation per year.

What is the hottest day ever recorded in Tres Isletas?

The hottest day measured in Tres Isletas between 1940 and 2025 was 16 October 2014, reaching 47.8 °C.

What is the coldest day in Tres Isletas?

The coldest day measured in Tres Isletas between 1940 and 2025 was 29 July 2021, at -3.8 °C.

Does it snow in Tres Isletas?

Almost never: Tres Isletas sees virtually no snow, with about 1 frost days per year.

Has the climate of Tres Isletas warmed?

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

What is the wettest day in Tres Isletas?

The wettest day measured in Tres Isletas between 1940 and 2025 was 10 November 2004, with 185 mm of rain in 24 hours.

What was the windiest day in Tres Isletas?

The windiest day measured in Tres Isletas between 1940 and 2025 was 3 February 2010, with winds reaching 38.2 km/h.

What is the warmest month in Tres Isletas?

The warmest month in Tres Isletas is January (27.4 °C on average); the coldest is July (15.9 °C).

How much does it rain in Tres Isletas?

Tres Isletas receives on average 1,172 mm of precipitation per year, spread over about 112 rainy days.

Is it sunny in Tres Isletas?

Tres Isletas gets on average 9.2 hours of sunshine per day, roughly 3,358 hours per year over 1940-2025.

What is the biggest single-day snowfall in Tres Isletas?

The heaviest 24-hour snowfall measured in Tres Isletas between 1940 and 2025 was 11 August 1949, with 1.3 cm.

Are there tropical nights in Tres Isletas?

Yes: Tres Isletas has on average 132 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Tres Isletas?

In Tres Isletas, between 1940 and 2025, the highest apparent temperature reached 48.3 °C on 19 November 2009, and the lowest was -7.9 °C on 29 July 2021.

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