Libertador General San Martin climate — normals and trends

Q: What is the climate of Libertador General San Martin?

Libertador General San Martin has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 18.7 °C and it receives 2,009 mm of precipitation per year.

Q: What is the hottest day ever recorded in Libertador General San Martin?

The hottest day measured in Libertador General San Martin between 1940 and 2025 was 11 November 2023, reaching 41.2 °C.

Q: What is the coldest day in Libertador General San Martin?

The coldest day measured in Libertador General San Martin between 1940 and 2025 was 10 July 1969, at -5.1 °C.

Q: Does it snow in Libertador General San Martin?

Almost never: Libertador General San Martin sees virtually no snow, with about 3 frost days per year.

Q: Has the climate of Libertador General San Martin warmed?

Yes: Libertador General San Martin warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Libertador General San Martin?

The wettest day measured in Libertador General San Martin between 1940 and 2025 was 26 January 1956, with 155 mm of rain in 24 hours.

Q: What was the windiest day in Libertador General San Martin?

The windiest day measured in Libertador General San Martin between 1940 and 2025 was 10 September 1940, with winds reaching 26.3 km/h.

Q: What is the warmest month in Libertador General San Martin?

The warmest month in Libertador General San Martin is January (23.4 °C on average); the coldest is July (12.2 °C).

Q: How much does it rain in Libertador General San Martin?

Libertador General San Martin receives on average 2,009 mm of precipitation per year, spread over about 187 rainy days.

Q: Is it sunny in Libertador General San Martin?

Libertador General San Martin gets on average 9.8 hours of sunshine per day, roughly 3,577 hours per year over 1940-2025.

Libertador General San Martin (Argentina) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 18.7 °C and it receives 2,009 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 (23.4 °C on average) and the coldest is July (12.2 °C). Rainfall peaks in March.

Libertador General San Martin averages 3 frost days, 54 hot days (≥ 30 °C) and 187 rainy days per year.

Libertador General San Martin has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.

The number of frost days there went from about 2 to 4 per year over the period.

The hottest day of the period reached 41.2 °C (on 11 November 2023) and the coldest -5.1 °C (on 10 July 1969).

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

Libertador General San MartinJujuy

coords: -23.81°, -64.79°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthJanuaryColdest monthJulyWettest monthMarchDriest monthAugust

Mean daily temperature

18.7°C

Average daily high

24.2°C

Average daily low

13.8°C

Annual rainfall

2,009mm

Sunshine / day

9.8h

Mean relative humidity

78%

Average peak wind

9.0km/h

Seasonal range

11.2°C

Frost days (< 0 °C)

3 d/yr

Hot days (≥ 30 °C)

54 d/yr

Rainy days (≥ 1 mm)

187 d/yr

Annual snowfall

0.1 cm

Average feels-like high

26.1 °C

Average feels-like low

14.1 °C

Average peak gust

28.4 km/h

Tropical nights (≥ 20 °C)

36 d/yr

Solar radiation

16.6 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.8 °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

41.2 °C

11 November 2023

Coldest day

-5.1 °C

10 July 1969

Wettest day

155 mm

26 January 1956

Windiest day

26.3 km/h

10 September 1940

Strongest gust

72.4 km/h

12 January 2010

Hottest feels-like

45.3 °C

3 November 2004

Coldest feels-like

-8.6 °C

10 July 1969

Snowiest day

4.0 cm

17 July 2010

Sunniest day

13.4 h

15 December 2010

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	39.2 °C5 October 2025	-2.4 °C25 June 2025	19.7 °C	1,209 mm	104	2
2024	38.0 °C3 February 2024	-4.0 °C15 July 2024	19.9 °C	1,468 mm	104	9
2023	41.2 °C11 November 2023	-1.5 °C14 June 2023	20.8 °C	991 mm	128	4
2022	39.8 °C1 January 2022	-2.3 °C20 June 2022	19.3 °C	1,104 mm	106	6
2021	38.4 °C31 December 2021	-3.4 °C30 June 2021	19.5 °C	1,198 mm	91	4
2020	39.1 °C26 September 2020	-2.2 °C25 July 2020	19.8 °C	1,102 mm	108	8
2019	40.2 °C27 October 2019	-1.6 °C26 July 2019	19.3 °C	1,617 mm	86	1
2018	39.1 °C23 September 2018	0.2 °C18 June 2018	19.3 °C	1,969 mm	71	0
2017	37.7 °C1 January 2017	-2.9 °C20 July 2017	19.6 °C	1,576 mm	94	2
2016	38.2 °C1 November 2016	0.4 °C7 September 2016	18.9 °C	1,801 mm	85	0
2015	36.1 °C23 December 2015	1.8 °C22 July 2015	19.6 °C	1,680 mm	73	0
2014	40.1 °C16 October 2014	-1.2 °C27 July 2014	19.6 °C	1,518 mm	83	3
2013	39.3 °C15 November 2013	-4.9 °C23 July 2013	19.5 °C	865 mm	101	4
2012	39.1 °C15 October 2012	0.5 °C19 July 2012	19.9 °C	1,177 mm	100	0
2011	39.9 °C9 November 2011	-2.2 °C29 June 2011	19.0 °C	1,459 mm	63	7
2010	39.0 °C29 October 2010	-4.4 °C20 July 2010	18.9 °C	1,295 mm	78	11
2009	40.8 °C2 November 2009	-3.9 °C24 July 2009	19.5 °C	1,749 mm	82	4
2008	37.1 °C23 November 2008	-1.2 °C1 June 2008	18.9 °C	1,654 mm	67	1
2007	37.2 °C18 November 2007	-4.0 °C11 July 2007	18.7 °C	1,824 mm	73	7
2006	37.7 °C14 October 2006	0.8 °C2 August 2006	19.4 °C	2,087 mm	65	0
2005	38.0 °C9 January 2005	-0.3 °C17 July 2005	19.1 °C	1,639 mm	82	2
2004	39.1 °C3 November 2004	-1.6 °C12 June 2004	19.0 °C	1,527 mm	80	2
2003	38.6 °C17 November 2003	-0.7 °C12 July 2003	19.4 °C	1,687 mm	85	2
2002	37.2 °C6 October 2002	0.6 °C3 August 2002	19.2 °C	1,866 mm	83	0
2001	35.6 °C26 October 2001	-1.4 °C20 June 2001	18.9 °C	1,583 mm	64	3
2000	36.4 °C9 October 2000	-2.8 °C13 July 2000	18.5 °C	2,051 mm	67	10
1999	37.4 °C18 December 1999	-1.6 °C17 August 1999	18.3 °C	1,769 mm	55	2
1998	38.0 °C28 December 1998	3.4 °C19 June 1998	18.8 °C	1,714 mm	58	0
1997	38.7 °C11 October 1997	2.9 °C1 July 1997	19.6 °C	1,923 mm	71	0
1996	38.3 °C3 January 1996	-0.7 °C29 June 1996	18.8 °C	1,858 mm	66	2
1995	38.8 °C19 December 1995	0.2 °C19 August 1995	19.0 °C	1,760 mm	66	0
1994	36.4 °C20 September 1994	-3.8 °C10 July 1994	19.2 °C	1,880 mm	68	4
1993	36.4 °C11 November 1993	-4.2 °C31 July 1993	18.3 °C	1,429 mm	49	7
1992	35.9 °C27 October 1992	-2.2 °C19 July 1992	18.2 °C	2,196 mm	33	4
1991	34.6 °C13 October 1991	-0.2 °C23 July 1991	18.5 °C	2,514 mm	27	1
1990	36.2 °C11 October 1990	-1.7 °C22 July 1990	18.7 °C	2,173 mm	57	4
1989	35.9 °C25 October 1989	-2.7 °C6 July 1989	19.1 °C	1,452 mm	99	3
1988	37.4 °C12 December 1988	-1.6 °C14 July 1988	18.4 °C	1,783 mm	54	4
1987	38.4 °C11 October 1987	-3.2 °C16 June 1987	18.6 °C	1,929 mm	61	4
1986	36.2 °C27 November 1986	1.4 °C2 July 1986	19.2 °C	1,950 mm	61	0
1985	34.5 °C16 November 1985	-1.4 °C11 August 1985	18.8 °C	2,727 mm	30	3
1984	35.1 °C29 October 1984	-0.1 °C26 August 1984	18.2 °C	2,255 mm	32	1
1983	35.5 °C9 December 1983	-1.1 °C4 June 1983	18.2 °C	1,946 mm	75	1
1982	35.6 °C22 October 1982	2.2 °C1 July 1982	18.6 °C	2,494 mm	33	0
1981	35.2 °C30 October 1981	-2.8 °C20 July 1981	18.7 °C	2,067 mm	38	5
1980	36.3 °C20 October 1980	-2.2 °C5 July 1980	18.8 °C	1,708 mm	61	5
1979	34.1 °C25 August 1979	-0.6 °C31 May 1979	18.4 °C	2,530 mm	49	2
1978	36.8 °C18 November 1978	-1.5 °C14 August 1978	19.2 °C	1,596 mm	60	4
1977	40.2 °C1 November 1977	0.2 °C25 June 1977	19.1 °C	1,950 mm	62	0
1976	36.2 °C15 November 1976	-2.1 °C11 July 1976	18.0 °C	2,060 mm	62	5
1975	37.8 °C26 October 1975	-2.0 °C10 August 1975	18.5 °C	1,811 mm	59	5
1974	37.5 °C24 November 1974	1.1 °C23 July 1974	18.2 °C	2,161 mm	50	0
1973	36.6 °C21 October 1973	0.5 °C19 July 1973	18.4 °C	2,708 mm	51	0
1972	38.9 °C28 November 1972	-1.1 °C9 July 1972	18.8 °C	1,879 mm	67	1
1971	36.1 °C18 September 1971	-2.2 °C3 July 1971	18.1 °C	2,377 mm	49	2
1970	40.2 °C26 November 1970	-1.7 °C3 July 1970	18.6 °C	2,067 mm	55	7
1969	36.4 °C25 September 1969	-5.1 °C10 July 1969	18.9 °C	1,691 mm	73	5
1968	36.1 °C23 October 1968	0.9 °C16 May 1968	18.4 °C	2,580 mm	47	0
1967	34.4 °C26 September 1967	-0.8 °C16 June 1967	18.5 °C	2,204 mm	41	2
1966	36.4 °C30 September 1966	-3.9 °C5 August 1966	18.2 °C	2,104 mm	57	11
1965	37.0 °C4 December 1965	-1.6 °C12 July 1965	18.7 °C	1,422 mm	57	4
1964	35.4 °C26 January 1964	-1.9 °C1 July 1964	18.1 °C	1,987 mm	47	2
1963	36.0 °C31 October 1963	-0.2 °C6 August 1963	18.6 °C	2,013 mm	50	1
1962	36.6 °C28 November 1962	-1.1 °C18 July 1962	17.8 °C	1,996 mm	57	8
1961	35.6 °C25 October 1961	-4.6 °C15 June 1961	19.1 °C	2,191 mm	50	5
1960	36.2 °C1 October 1960	-2.4 °C10 July 1960	18.2 °C	2,181 mm	50	4
1959	34.1 °C8 September 1959	1.6 °C22 May 1959	18.1 °C	2,900 mm	17	0
1958	31.3 °C8 November 1958	-2.0 °C10 August 1958	18.0 °C	2,471 mm	18	1
1957	33.7 °C15 October 1957	-2.2 °C20 July 1957	17.7 °C	2,468 mm	22	4
1956	29.7 °C3 January 1956	3.2 °C5 July 1956	17.2 °C	3,172 mm	0	0
1955	30.7 °C24 December 1955	-0.9 °C31 July 1955	17.5 °C	2,933 mm	1	2
1954	31.3 °C2 December 1954	3.6 °C19 June 1954	17.6 °C	2,756 mm	1	0
1953	31.2 °C5 January 1953	1.7 °C25 July 1953	18.6 °C	2,957 mm	2	0
1952	31.2 °C23 December 1952	-0.4 °C20 June 1952	18.0 °C	2,306 mm	5	1
1951	31.4 °C25 September 1951	4.3 °C5 August 1951	18.4 °C	3,484 mm	2	0
1950	30.0 °C12 December 1950	2.2 °C1 July 1950	17.9 °C	2,779 mm	1	0
1949	31.5 °C25 February 1949	0.2 °C12 August 1949	17.5 °C	2,511 mm	4	0
1948	31.9 °C22 September 1948	3.3 °C28 July 1948	18.2 °C	2,821 mm	2	0
1947	30.2 °C30 January 1947	0.5 °C14 July 1947	17.7 °C	3,384 mm	2	0
1946	32.4 °C15 November 1946	0.7 °C20 July 1946	18.2 °C	3,356 mm	5	0
1945	32.0 °C15 January 1945	-0.3 °C25 June 1945	18.4 °C	2,225 mm	10	2
1944	31.8 °C20 February 1944	2.2 °C7 July 1944	18.8 °C	1,984 mm	4	0
1943	37.3 °C17 January 1943	1.4 °C31 August 1943	18.5 °C	1,313 mm	32	0
1942	35.0 °C29 December 1942	-1.0 °C12 July 1942	17.7 °C	1,247 mm	45	2
1941	32.3 °C29 November 1941	0.2 °C28 June 1941	17.9 °C	1,765 mm	17	0
1940	30.9 °C12 January 1940	2.4 °C16 June 1940	17.6 °C	3,179 mm	1	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

25.7 °C

+1.5 °C

Hot days (≥ 30 °C)

104 d/yr

+50

Frost days (< 0 °C)

2 d/yr

-1

Annual rainfall

1209 mm

-801 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	30.6 °C	+2.2 °C	194 mm	-88 mm
Feb	32.4 °C	+5.0 °C	152 mm	-116 mm
Mar	26.1 °C	+0.2 °C	290 mm	-18 mm
Apr	22.2 °C	-0.8 °C	93 mm	-122 mm
May	21.9 °C	+1.7 °C	76 mm	-38 mm
Jun	17.3 °C	-0.9 °C	20 mm	-40 mm
Jul	19.1 °C	+0.4 °C	38 mm	-8 mm
Aug	22.8 °C	+1.0 °C	16 mm	-27 mm
Sep	27.6 °C	+3.2 °C	16 mm	-46 mm
Oct	28.1 °C	+1.6 °C	88 mm	-53 mm
Nov	30.1 °C	+2.5 °C	44 mm	-159 mm
Dec	30.3 °C	+2.0 °C	180 mm	-87 mm

The year's extremes

Hottest day

39.2 °C

5 Oct 2025

Coldest day

-2.4 °C

25 Jun 2025

Wettest day

116.1 mm

18 Feb 2025

Windiest day

22.1 km/h

21 Nov 2025

Strongest gust

58.3 km/h

27 Sep 2025

Hottest feels-like

42.2 °C

4 Feb 2025

Coldest feels-like

-5.4 °C

25 Jun 2025

Snowiest day

0.1 cm

1 Jul 2025

Sunniest day

13.4 h

13 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 Libertador General San Martin?

Libertador General San Martin has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 18.7 °C and it receives 2,009 mm of precipitation per year.

What is the hottest day ever recorded in Libertador General San Martin?

The hottest day measured in Libertador General San Martin between 1940 and 2025 was 11 November 2023, reaching 41.2 °C.

What is the coldest day in Libertador General San Martin?

The coldest day measured in Libertador General San Martin between 1940 and 2025 was 10 July 1969, at -5.1 °C.

Does it snow in Libertador General San Martin?

Almost never: Libertador General San Martin sees virtually no snow, with about 3 frost days per year.

Has the climate of Libertador General San Martin warmed?

Yes: Libertador General San Martin warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Libertador General San Martin?

The wettest day measured in Libertador General San Martin between 1940 and 2025 was 26 January 1956, with 155 mm of rain in 24 hours.

What was the windiest day in Libertador General San Martin?

The windiest day measured in Libertador General San Martin between 1940 and 2025 was 10 September 1940, with winds reaching 26.3 km/h.

What is the warmest month in Libertador General San Martin?

The warmest month in Libertador General San Martin is January (23.4 °C on average); the coldest is July (12.2 °C).

How much does it rain in Libertador General San Martin?

Libertador General San Martin receives on average 2,009 mm of precipitation per year, spread over about 187 rainy days.

Is it sunny in Libertador General San Martin?

Libertador General San Martin gets on average 9.8 hours of sunshine per day, roughly 3,577 hours per year over 1940-2025.

What is the biggest single-day snowfall in Libertador General San Martin?

The heaviest 24-hour snowfall measured in Libertador General San Martin between 1940 and 2025 was 17 July 2010, with 4.0 cm.

Are there tropical nights in Libertador General San Martin?

Yes: Libertador General San Martin has on average 36 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Libertador General San Martin?

In Libertador General San Martin, between 1940 and 2025, the highest apparent temperature reached 45.3 °C on 3 November 2004, and the lowest was -8.6 °C on 10 July 1969.

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