Buenos Aires Observ Weather Records (AR000875850)

Record envelope, standing records and threshold days for Buenos Aires Observ (AR000875850), Argentina, with 118 years of record.

Key Facts for Buenos Aires Observ

Buenos Aires Observ (AR000875850) is a weather station in Argentina at -34.58 latitude and -58.48 longitude, 25 m (82 ft) above sea level.
The station reports from 1908 to 2025, 118 years of record.
1,464 records set at Buenos Aires Observ still stand.
Records are tracked for tmax, tmin: an element needs 30 years of data to be eligible.
Buenos Aires Observ set a daily record high minimum temperature of 24.1 C (75.4 F) on 22 March 2025.

About the Station

Location: Argentina, -34.58 latitude, -58.48 longitude.
Elevation: 25 m (82 ft).
Period of record: 1908 to 2025, 118 years.
Eligible elements: tmax, tmin.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Buenos Aires Observ. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Buenos Aires Observ, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	43.3 C (109.9 F)	5.9 C (42.6 F)	n/a	n/a
Feb	38.7 C (101.7 F)	4.2 C (39.6 F)	n/a	n/a
Mar	38.9 C (102.0 F)	2.8 C (37.0 F)	n/a	n/a
Apr	34.3 C (93.7 F)	-2.3 C (27.9 F)	n/a	n/a
May	31.0 C (87.8 F)	-2.4 C (27.7 F)	n/a	n/a
Jun	28.5 C (83.3 F)	-5.3 C (22.5 F)	n/a	n/a
Jul	30.2 C (86.4 F)	-5.4 C (22.3 F)	n/a	n/a
Aug	33.7 C (92.7 F)	-4.0 C (24.8 F)	n/a	n/a
Sep	35.3 C (95.5 F)	-2.4 C (27.7 F)	n/a	n/a
Oct	36.3 C (97.3 F)	-2.0 C (28.4 F)	n/a	n/a
Nov	36.8 C (98.2 F)	1.6 C (34.9 F)	n/a	n/a
Dec	40.5 C (104.9 F)	3.7 C (38.7 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Buenos Aires Observ still stand. 1916 holds the most, with 30.

Standing records at Buenos Aires Observ by the year they were set
Year set	Standing records
1908	7
1909	25
1910	25
1911	24
1912	17
1913	16
1914	15
1915	26
1916	30
1917	23
1918	28
1919	7
1920	22
1921	19
1922	13
1923	15
1924	30
1925	19
1926	7
1927	12
1928	26
1929	8
1930	15
1931	16
1932	12
1933	17
1934	16
1935	23
1936	7
1937	12
1938	8
1939	18
1940	15
1941	19
1942	15
1943	21
1944	17
1945	11
1946	11
1947	6
1948	18
1949	16
1950	17
1951	20
1952	8
1953	8
1954	12
1955	20
1956	12
1957	20
1959	8
1960	8
1961	4
1962	14
1963	6
1964	5
1965	24
1966	10
1967	14
1968	4
1969	4
1970	17
1971	21
1972	16
1973	5
1974	10
1975	8
1976	11
1977	10
1978	4
1979	10
1980	19
1981	12
1982	6
1983	8
1984	6
1985	7
1986	9
1987	11
1988	5
1989	4
1990	9
1991	16
1992	12
1993	17
1994	16
1995	17
1996	11
1997	25
1998	3
1999	8
2000	5
2001	11
2002	15
2003	5
2004	9
2011	2
2012	13
2013	15
2014	14
2015	9
2016	2
2017	7
2018	15
2019	9
2020	8
2021	10
2022	12
2023	23
2024	14
2025	8

All-Time Record Progression

5 new records

5 all-time records were set at Buenos Aires Observ between 13 January 1945 and 15 January 2022. Each dot is a new record.

When Buenos Aires Observ set new all-time records
Date	Kind	Detail
1945-01-13	Record high minimum temperature	Record high minimum temperature 27.3 C (81.1 F)
1957-01-29	Record high maximum temperature	Record high maximum temperature 43.3 C (109.9 F)
1971-12-29	Record high minimum temperature	Record high minimum temperature 28.1 C (82.6 F)
1971-12-30	Record high minimum temperature	Record high minimum temperature 28.2 C (82.8 F)
2022-01-15	Record high minimum temperature	Record high minimum temperature 29.8 C (85.6 F)

Wettest Day of Each Month

Jun: 300.0 mm (11.8 in)

The wettest day on record for each calendar month at Buenos Aires Observ. The most was 300.0 mm (11.8 in) on 8 June 1973.

Record daily precipitation for each month at Buenos Aires Observ
Month	Record daily precipitation (mm)	Date
Jan	183.9 mm (7.2 in)	6 January 1995
Feb	142.0 mm (5.6 in)	23 February 1995
Mar	160.0 mm (6.3 in)	15 March 1994
Apr	159.0 mm (6.3 in)	2 April 2013
May	104.9 mm (4.1 in)	8 May 2017
Jun	300.0 mm (11.8 in)	8 June 1973
Jul	59.9 mm (2.4 in)	2 July 1979
Aug	201.2 mm (7.9 in)	30 August 2014
Sep	70.1 mm (2.8 in)	29 September 1976
Oct	161.0 mm (6.3 in)	10 October 1994
Nov	161.0 mm (6.3 in)	1 November 1994
Dec	141.0 mm (5.6 in)	12 December 1992

Period of Record Coverage

1908 to 2025

111 years of record at Buenos Aires Observ, 1908 to 2025. 17 years have data for under 90 percent of days and are left out of rankings: 1908, 2004, 2011, 2012, 2013, 2014, 2015, 2016 and others.

Days with data per year at Buenos Aires Observ
Year	Days with data	Share of year	Complete
1908	121	33%	No
1909	365	100%	Yes
1910	365	100%	Yes
1911	365	100%	Yes
1912	366	100%	Yes
1913	365	100%	Yes
1914	365	100%	Yes
1915	365	100%	Yes
1916	366	100%	Yes
1917	365	100%	Yes
1918	363	99%	Yes
1919	365	100%	Yes
1920	366	100%	Yes
1921	365	100%	Yes
1922	365	100%	Yes
1923	365	100%	Yes
1924	366	100%	Yes
1925	365	100%	Yes
1926	365	100%	Yes
1927	364	100%	Yes
1928	366	100%	Yes
1929	364	100%	Yes
1930	365	100%	Yes
1931	364	100%	Yes
1932	366	100%	Yes
1933	365	100%	Yes
1934	365	100%	Yes
1935	365	100%	Yes
1936	366	100%	Yes
1937	365	100%	Yes
1938	365	100%	Yes
1939	364	100%	Yes
1940	366	100%	Yes
1941	365	100%	Yes
1942	365	100%	Yes
1943	365	100%	Yes
1944	366	100%	Yes
1945	365	100%	Yes
1946	365	100%	Yes
1947	365	100%	Yes
1948	366	100%	Yes
1949	365	100%	Yes
1950	365	100%	Yes
1951	364	100%	Yes
1952	366	100%	Yes
1953	365	100%	Yes
1954	364	100%	Yes
1955	365	100%	Yes
1956	365	100%	Yes
1957	365	100%	Yes
1959	365	100%	Yes
1960	365	100%	Yes
1961	363	99%	Yes
1962	365	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	364	100%	Yes
1966	362	99%	Yes
1967	365	100%	Yes
1968	365	100%	Yes
1969	364	100%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	364	100%	Yes
1979	364	100%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	364	100%	Yes
1983	364	100%	Yes
1984	366	100%	Yes
1985	365	100%	Yes
1986	334	92%	Yes
1987	365	100%	Yes
1988	366	100%	Yes
1989	365	100%	Yes
1990	365	100%	Yes
1991	365	100%	Yes
1992	365	100%	Yes
1993	365	100%	Yes
1994	365	100%	Yes
1995	365	100%	Yes
1996	366	100%	Yes
1997	365	100%	Yes
1998	365	100%	Yes
1999	365	100%	Yes
2000	366	100%	Yes
2001	365	100%	Yes
2002	365	100%	Yes
2003	365	100%	Yes
2004	152	42%	No
2011	61	17%	No
2012	200	55%	No
2013	197	54%	No
2014	189	52%	No
2015	207	57%	No
2016	195	53%	No
2017	201	55%	No
2018	191	52%	No
2019	171	47%	No
2020	180	49%	No
2021	178	49%	No
2022	166	45%	No
2023	173	47%	No
2024	163	45%	No
2025	113	31%	No

Latest Records

Latest records at Buenos Aires Observ
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
22 March 2025	Buenos Aires Observ, AR	daily high min	24.1 C (75.4 F)	1.7 C (3.1 F)	44 years	27 of 100 (Routine)
7 March 2025	Buenos Aires Observ, AR	daily high min	27.6 C (81.7 F)	2.3 C (4.1 F)	26 years	22 of 100 (Routine)
6 March 2025	Buenos Aires Observ, AR	daily high min	26.3 C (79.3 F)	1.5 C (2.7 F)	2 years	13 of 100 (Routine)
5 March 2025	Buenos Aires Observ, AR	daily high min	24.7 C (76.5 F)	0.1 C (0.2 F)	94 years	38 of 100 (Notable)
21 February 2025	Buenos Aires Observ, AR	daily high min	25.4 C (77.7 F)	0.6 C (1.1 F)	72 years	32 of 100 (Routine)
11 February 2025	Buenos Aires Observ, AR	daily high max	38.5 C (101.3 F)	1.9 C (3.4 F)	83 years	39 of 100 (Notable)
3 February 2025	Buenos Aires Observ, AR	daily high min	26.1 C (79.0 F)	0.5 C (0.9 F)	1 year	11 of 100 (Routine)
16 January 2025	Buenos Aires Observ, AR	daily high min	26.1 C (79.0 F)	0.9 C (1.6 F)	48 years	26 of 100 (Routine)
16 November 2024	Buenos Aires Observ, AR	daily high min	23.2 C (73.8 F)	0.2 C (0.4 F)	99 years	39 of 100 (Notable)
2 November 2024	Buenos Aires Observ, AR	daily high min	20.8 C (69.4 F)	0.1 C (0.2 F)	29 years	18 of 100 (Routine)
1 November 2024	Buenos Aires Observ, AR	daily high min	21.3 C (70.3 F)	0.6 C (1.1 F)	73 years	32 of 100 (Routine)
22 October 2024	Buenos Aires Observ, AR	daily high max	34.3 C (93.7 F)	3.8 C (6.8 F)	116 years	49 of 100 (Notable)
22 October 2024	Buenos Aires Observ, AR	daily high min	20.5 C (68.9 F)	0.1 C (0.2 F)	47 years	24 of 100 (Routine)
21 October 2024	Buenos Aires Observ, AR	daily high min	21.2 C (70.2 F)	0.6 C (1.1 F)	47 years	25 of 100 (Routine)
1 October 2024	Buenos Aires Observ, AR	daily high max	30.9 C (87.6 F)	1.0 C (1.8 F)	109 years	42 of 100 (Notable)
30 September 2024	Buenos Aires Observ, AR	daily high min	19.6 C (67.3 F)	0.6 C (1.1 F)	5 years	12 of 100 (Routine)
3 August 2024	Buenos Aires Observ, AR	daily high max	29.7 C (85.5 F)	3.0 C (5.4 F)	23 years	23 of 100 (Routine)
10 June 2024	Buenos Aires Observ, AR	daily high max	27.1 C (80.8 F)	0.1 C (0.2 F)	55 years	26 of 100 (Routine)
9 June 2024	Buenos Aires Observ, AR	daily high min	19.4 C (66.9 F)	2.4 C (4.3 F)	23 years	21 of 100 (Routine)
2 June 2024	Buenos Aires Observ, AR	daily high max	23.5 C (74.3 F)	0.9 C (1.6 F)	58 years	29 of 100 (Routine)

Climate Trend

93 complete years, 1909 to 2003

One stripe for each of 93 complete years at Buenos Aires Observ, 1909 to 2003. Blue stripes are years cooler than the station's own mean of 17.3 C (63.2 F); red stripes are warmer. The coolest year was 1911, at 15.4 C (59.6 F), and the warmest was 1997, at 18.8 C (65.8 F). The strongest colour marks a difference of 2.0 C (3.6 F).

Annual mean temperature at Buenos Aires Observ as warming stripes, 1909 to 2003
Year	Annual mean temperature	Difference from the station mean
1909	15.6 C	-1.69 C
1910	15.8 C	-1.50 C
1911	15.4 C	-1.96 C
1912	16.2 C	-1.15 C
1913	17.0 C	-0.29 C
1914	16.7 C	-0.66 C
1915	16.1 C	-1.27 C
1916	16.0 C	-1.37 C
1917	16.0 C	-1.28 C
1918	16.2 C	-1.10 C
1919	16.7 C	-0.62 C
1920	16.6 C	-0.75 C
1921	16.0 C	-1.32 C
1922	16.3 C	-1.00 C
1923	16.2 C	-1.17 C
1924	15.5 C	-1.84 C
1925	16.6 C	-0.71 C
1926	17.1 C	-0.22 C
1927	17.0 C	-0.30 C
1928	16.5 C	-0.78 C
1929	17.0 C	-0.36 C
1930	16.8 C	-0.52 C
1931	16.2 C	-1.17 C
1932	17.6 C	+0.32 C
1933	16.8 C	-0.56 C
1934	16.4 C	-0.89 C
1935	16.7 C	-0.61 C
1936	16.9 C	-0.43 C
1937	16.4 C	-0.88 C
1938	16.6 C	-0.72 C
1939	16.8 C	-0.53 C
1940	16.9 C	-0.44 C
1941	16.7 C	-0.67 C
1942	17.0 C	-0.33 C
1943	17.9 C	+0.56 C
1944	17.9 C	+0.57 C
1945	17.9 C	+0.54 C
1946	17.3 C	-0.05 C
1947	17.4 C	+0.07 C
1948	17.3 C	-0.05 C
1949	17.5 C	+0.22 C
1950	17.5 C	+0.16 C
1951	17.7 C	+0.35 C
1952	17.5 C	+0.20 C
1953	17.4 C	+0.04 C
1954	17.3 C	-0.07 C
1955	16.7 C	-0.60 C
1956	16.8 C	-0.57 C
1957	17.6 C	+0.31 C
1959	17.1 C	-0.18 C
1960	17.9 C	+0.57 C
1961	17.8 C	+0.46 C
1962	17.4 C	+0.11 C
1963	17.5 C	+0.22 C
1964	17.0 C	-0.35 C
1965	17.7 C	+0.42 C
1966	17.3 C	+0.00 C
1967	17.8 C	+0.43 C
1968	18.0 C	+0.63 C
1969	18.3 C	+0.94 C
1970	18.2 C	+0.86 C
1971	17.7 C	+0.40 C
1972	17.9 C	+0.56 C
1973	17.5 C	+0.20 C
1974	17.7 C	+0.41 C
1975	18.1 C	+0.77 C
1976	17.2 C	-0.08 C
1977	18.2 C	+0.83 C
1978	17.7 C	+0.42 C
1979	18.0 C	+0.72 C
1980	18.5 C	+1.20 C
1981	18.2 C	+0.83 C
1982	18.2 C	+0.88 C
1983	17.8 C	+0.46 C
1984	17.3 C	-0.05 C
1985	18.2 C	+0.86 C
1987	18.0 C	+0.72 C
1988	17.5 C	+0.13 C
1989	18.7 C	+1.37 C
1990	18.0 C	+0.72 C
1991	18.0 C	+0.63 C
1992	17.8 C	+0.52 C
1993	18.0 C	+0.65 C
1994	18.5 C	+1.19 C
1995	18.2 C	+0.91 C
1996	18.6 C	+1.23 C
1997	18.8 C	+1.48 C
1998	18.0 C	+0.65 C
1999	17.9 C	+0.60 C
2000	18.0 C	+0.65 C
2001	18.6 C	+1.30 C
2002	18.3 C	+0.94 C
2003	18.0 C	+0.68 C

The annual mean temperature here has risen by 0.2 C (0.2 to 0.3) per decade over 1909 to 2003. In Fahrenheit: 0.4 F (0.4 to 0.5) per decade. The slope is a straight line fitted to 93 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Buenos Aires Observ
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.2 C (0.2 to 0.3) per decade	0.4 F (0.4 to 0.5) per decade	1909 to 2003	93	Rise
Mean daily maximum	0.1 C (0.1 to 0.2) per decade	0.3 F (0.2 to 0.3) per decade	1909 to 2003	93	Rise
Mean daily minimum	0.4 C (0.3 to 0.4) per decade	0.6 F (0.6 to 0.7) per decade	1909 to 2003	93	Rise

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1908 to 2025

Yearly extremes at Buenos Aires Observ: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	43.3 C (109.9 F)	1957	37.2 C (99.0 F)	111
Coldest night (TNn)	-5.4 C (22.3 F)	1918	-1.4 C (29.5 F)	111
Wettest day (Rx1day)	300.0 mm (11.8 in)	1973	83.1 mm (3.3 in)	30
Wettest five days (Rx5day)	397.3 mm (15.6 in)	1995	102.1 mm (4.0 in)	25
Longest dry spell (CDD)	12 days	1995	4 days	29

Hottest day (TXx)

The hottest day of the year at Buenos Aires Observ, 1908 to 2025. The record is 43.3 C (109.9 F) in 1957, marked on the chart; the median year is 37.2 C (99.0 F).

Hottest day (TXx) at Buenos Aires Observ by year
Year	Hottest day (TXx)
1908	37.0 C (98.6 F)
1909	38.2 C (100.8 F)
1910	38.7 C (101.7 F)
1911	38.5 C (101.3 F)
1912	34.9 C (94.8 F)
1913	36.6 C (97.9 F)
1914	36.1 C (97.0 F)
1915	35.4 C (95.7 F)
1916	38.0 C (100.4 F)
1917	38.9 C (102.0 F)
1918	34.6 C (94.3 F)
1919	37.1 C (98.8 F)
1920	37.1 C (98.8 F)
1921	37.5 C (99.5 F)
1922	35.6 C (96.1 F)
1923	40.0 C (104.0 F)
1924	37.7 C (99.9 F)
1925	39.7 C (103.5 F)
1926	37.1 C (98.8 F)
1927	36.9 C (98.4 F)
1928	35.4 C (95.7 F)
1929	37.8 C (100.0 F)
1930	36.2 C (97.2 F)
1931	38.0 C (100.4 F)
1932	38.5 C (101.3 F)
1933	36.5 C (97.7 F)
1934	39.5 C (103.1 F)
1935	40.5 C (104.9 F)
1936	35.2 C (95.4 F)
1937	36.3 C (97.3 F)
1938	36.8 C (98.2 F)
1939	36.0 C (96.8 F)
1940	37.8 C (100.0 F)
1941	34.5 C (94.1 F)
1942	36.6 C (97.9 F)
1943	40.3 C (104.5 F)
1944	38.7 C (101.7 F)
1945	38.0 C (100.4 F)
1946	37.7 C (99.9 F)
1947	35.0 C (95.0 F)
1948	39.8 C (103.6 F)
1949	39.3 C (102.7 F)
1950	38.4 C (101.1 F)
1951	36.4 C (97.5 F)
1952	37.9 C (100.2 F)
1953	37.2 C (99.0 F)
1954	37.7 C (99.9 F)
1955	39.7 C (103.5 F)
1956	37.8 C (100.0 F)
1957	43.3 C (109.9 F)
1959	36.6 C (97.9 F)
1960	36.8 C (98.2 F)
1961	36.3 C (97.3 F)
1962	38.0 C (100.4 F)
1963	37.2 C (99.0 F)
1964	37.0 C (98.6 F)
1965	38.0 C (100.4 F)
1966	35.7 C (96.3 F)
1967	37.1 C (98.8 F)
1968	38.3 C (100.9 F)
1969	36.0 C (96.8 F)
1970	36.7 C (98.1 F)
1971	37.6 C (99.7 F)
1972	37.7 C (99.9 F)
1973	34.8 C (94.6 F)
1974	36.9 C (98.4 F)
1975	37.8 C (100.0 F)
1976	35.6 C (96.1 F)
1977	34.9 C (94.8 F)
1978	35.8 C (96.4 F)
1979	37.5 C (99.5 F)
1980	37.8 C (100.0 F)
1981	36.1 C (97.0 F)
1982	38.8 C (101.8 F)
1983	38.0 C (100.4 F)
1984	35.5 C (95.9 F)
1985	36.9 C (98.4 F)
1986	37.6 C (99.7 F)
1987	38.5 C (101.3 F)
1988	38.0 C (100.4 F)
1989	37.0 C (98.6 F)
1990	37.2 C (99.0 F)
1991	33.8 C (92.8 F)
1992	35.6 C (96.1 F)
1993	36.0 C (96.8 F)
1994	38.6 C (101.5 F)
1995	40.5 C (104.9 F)
1996	36.9 C (98.4 F)
1997	35.5 C (95.9 F)
1998	34.7 C (94.5 F)
1999	38.2 C (100.8 F)
2000	37.6 C (99.7 F)
2001	36.8 C (98.2 F)
2002	35.7 C (96.3 F)
2003	37.5 C (99.5 F)
2004	36.9 C (98.4 F)
2011	34.0 C (93.2 F)
2012	38.8 C (101.8 F)
2013	39.0 C (102.2 F)
2014	38.4 C (101.1 F)
2015	36.5 C (97.7 F)
2016	37.6 C (99.7 F)
2017	38.0 C (100.4 F)
2018	37.0 C (98.6 F)
2019	37.9 C (100.2 F)
2020	36.7 C (98.1 F)
2021	37.2 C (99.0 F)
2022	41.5 C (106.7 F)
2023	38.9 C (102.0 F)
2024	37.9 C (100.2 F)
2025	38.5 C (101.3 F)

Coldest night (TNn)

The coldest night of the year at Buenos Aires Observ, 1908 to 2025. The record is -5.4 C (22.3 F) in 1918, marked on the chart; the median year is -1.4 C (29.5 F).

Coldest night (TNn) at Buenos Aires Observ by year
Year	Coldest night (TNn)
1908	-1.8 C (28.8 F)
1909	-3.0 C (26.6 F)
1910	-4.6 C (23.7 F)
1911	-3.0 C (26.6 F)
1912	-3.1 C (26.4 F)
1913	-2.2 C (28.0 F)
1914	-0.5 C (31.1 F)
1915	-4.5 C (23.9 F)
1916	-4.2 C (24.4 F)
1917	-2.0 C (28.4 F)
1918	-5.4 C (22.3 F)
1919	-1.9 C (28.6 F)
1920	-3.6 C (25.5 F)
1921	-3.9 C (25.0 F)
1922	-2.3 C (27.9 F)
1923	-1.6 C (29.1 F)
1924	-2.6 C (27.3 F)
1925	-4.7 C (23.5 F)
1926	-1.6 C (29.1 F)
1927	-1.3 C (29.7 F)
1928	-2.8 C (27.0 F)
1929	-2.3 C (27.9 F)
1930	-3.3 C (26.1 F)
1931	-2.8 C (27.0 F)
1932	-1.5 C (29.3 F)
1933	-3.4 C (25.9 F)
1934	-2.0 C (28.4 F)
1935	-3.3 C (26.1 F)
1936	-1.3 C (29.7 F)
1937	-1.4 C (29.5 F)
1938	-0.4 C (31.3 F)
1939	-0.6 C (30.9 F)
1940	-0.3 C (31.5 F)
1941	-1.0 C (30.2 F)
1942	-4.7 C (23.5 F)
1943	-1.9 C (28.6 F)
1944	-3.2 C (26.2 F)
1945	-5.3 C (22.5 F)
1946	-1.6 C (29.1 F)
1947	-2.4 C (27.7 F)
1948	-4.0 C (24.8 F)
1949	-3.2 C (26.2 F)
1950	-0.9 C (30.4 F)
1951	-2.4 C (27.7 F)
1952	-1.3 C (29.7 F)
1953	-4.0 C (24.8 F)
1954	-2.2 C (28.0 F)
1955	-2.8 C (27.0 F)
1956	-2.0 C (28.4 F)
1957	-2.1 C (28.2 F)
1959	-0.2 C (31.6 F)
1960	-2.1 C (28.2 F)
1961	-2.6 C (27.3 F)
1962	-2.4 C (27.7 F)
1963	0.6 C (33.1 F)
1964	-1.9 C (28.6 F)
1965	-2.5 C (27.5 F)
1966	-1.4 C (29.5 F)
1967	-5.3 C (22.5 F)
1968	0.2 C (32.4 F)
1969	-1.1 C (30.0 F)
1970	-0.5 C (31.1 F)
1971	-1.5 C (29.3 F)
1972	-0.8 C (30.6 F)
1973	1.2 C (34.2 F)
1974	-1.4 C (29.5 F)
1975	-1.2 C (29.8 F)
1976	-1.6 C (29.1 F)
1977	0.4 C (32.7 F)
1978	0.4 C (32.7 F)
1979	0.3 C (32.5 F)
1980	-1.1 C (30.0 F)
1981	-1.0 C (30.2 F)
1982	-1.4 C (29.5 F)
1983	0.2 C (32.4 F)
1984	-1.6 C (29.1 F)
1985	0.9 C (33.6 F)
1986	0.8 C (33.4 F)
1987	-1.5 C (29.3 F)
1988	-1.5 C (29.3 F)
1989	0.6 C (33.1 F)
1990	0.3 C (32.5 F)
1991	-2.1 C (28.2 F)
1992	-1.0 C (30.2 F)
1993	0.6 C (33.1 F)
1994	0.1 C (32.2 F)
1995	-0.8 C (30.6 F)
1996	-0.5 C (31.1 F)
1997	0.2 C (32.4 F)
1998	2.3 C (36.1 F)
1999	-0.6 C (30.9 F)
2000	1.0 C (33.8 F)
2001	1.3 C (34.3 F)
2002	-0.5 C (31.1 F)
2003	0.3 C (32.5 F)
2004	3.8 C (38.8 F)
2011	4.5 C (40.1 F)
2012	0.1 C (32.2 F)
2013	0.5 C (32.9 F)
2014	1.4 C (34.5 F)
2015	1.2 C (34.2 F)
2016	1.5 C (34.7 F)
2017	0.5 C (32.9 F)
2018	0.0 C (32.0 F)
2019	0.2 C (32.4 F)
2020	0.3 C (32.5 F)
2021	1.6 C (34.9 F)
2022	1.2 C (34.2 F)
2023	0.7 C (33.3 F)
2024	-1.5 C (29.3 F)
2025	-1.9 C (28.6 F)

Wettest day (Rx1day)

The wettest day of the year at Buenos Aires Observ, 1908 to 2025. The record is 300.0 mm (11.8 in) in 1973, marked on the chart; the median year is 83.1 mm (3.3 in).

Wettest day (Rx1day) at Buenos Aires Observ by year
Year	Wettest day (Rx1day)
1908	n/a
1909	n/a
1910	n/a
1911	n/a
1912	n/a
1913	n/a
1914	n/a
1915	n/a
1916	n/a
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	300.0 mm (11.8 in)
1974	119.9 mm (4.7 in)
1975	55.1 mm (2.2 in)
1976	70.1 mm (2.8 in)
1977	70.1 mm (2.8 in)
1978	47.0 mm (1.9 in)
1979	119.9 mm (4.7 in)
1980	3.0 mm (0.12 in)
1981	16.0 mm (0.6 in)
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	141.0 mm (5.6 in)
1993	91.9 mm (3.6 in)
1994	161.0 mm (6.3 in)
1995	183.9 mm (7.2 in)
1996	81.0 mm (3.2 in)
1997	59.9 mm (2.4 in)
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2011	23.9 mm (0.9 in)
2012	121.9 mm (4.8 in)
2013	159.0 mm (6.3 in)
2014	201.2 mm (7.9 in)
2015	85.1 mm (3.4 in)
2016	52.1 mm (2.1 in)
2017	104.9 mm (4.1 in)
2018	108.0 mm (4.3 in)
2019	44.2 mm (1.7 in)
2020	52.1 mm (2.1 in)
2021	70.1 mm (2.8 in)
2022	60.2 mm (2.4 in)
2023	69.1 mm (2.7 in)
2024	95.0 mm (3.7 in)
2025	98.0 mm (3.9 in)

Wettest five days (Rx5day)

The wettest five days of the year at Buenos Aires Observ, 1908 to 2025. The record is 397.3 mm (15.6 in) in 1995, marked on the chart; the median year is 102.1 mm (4.0 in).

Wettest five days (Rx5day) at Buenos Aires Observ by year
Year	Wettest five days (Rx5day)
1908	n/a
1909	n/a
1910	n/a
1911	n/a
1912	n/a
1913	n/a
1914	n/a
1915	n/a
1916	n/a
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	4.0 mm (0.16 in)
1974	42.1 mm (1.7 in)
1975	n/a
1976	120.1 mm (4.7 in)
1977	84.4 mm (3.3 in)
1978	84.8 mm (3.3 in)
1979	68.0 mm (2.7 in)
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	231.2 mm (9.1 in)
1993	n/a
1994	308.2 mm (12.1 in)
1995	397.3 mm (15.6 in)
1996	102.1 mm (4.0 in)
1997	68.8 mm (2.7 in)
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2011	20.8 mm (0.8 in)
2012	107.1 mm (4.2 in)
2013	70.8 mm (2.8 in)
2014	213.1 mm (8.4 in)
2015	221.2 mm (8.7 in)
2016	105.9 mm (4.2 in)
2017	77.2 mm (3.0 in)
2018	157.9 mm (6.2 in)
2019	52.4 mm (2.1 in)
2020	n/a
2021	87.9 mm (3.5 in)
2022	56.9 mm (2.2 in)
2023	149.9 mm (5.9 in)
2024	206.0 mm (8.1 in)
2025	181.1 mm (7.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at Buenos Aires Observ, 1908 to 2025. The record is 12 days in 1995, marked on the chart; the median year is 4 days.

Longest dry spell (CDD) at Buenos Aires Observ by year
Year	Longest dry spell (CDD)
1908	n/a
1909	n/a
1910	n/a
1911	n/a
1912	n/a
1913	n/a
1914	n/a
1915	n/a
1916	n/a
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	4 days
1974	7 days
1975	2 days
1976	6 days
1977	6 days
1978	7 days
1979	9 days
1980	3 days
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	3 days
1993	2 days
1994	5 days
1995	12 days
1996	9 days
1997	8 days
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2011	3 days
2012	3 days
2013	3 days
2014	5 days
2015	3 days
2016	3 days
2017	4 days
2018	4 days
2019	6 days
2020	3 days
2021	2 days
2022	5 days
2023	5 days
2024	4 days
2025	5 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Frost Dates and Growing Season

56 years with a frost

Across 56 years with a frost, the median last spring frost at Buenos Aires Observ falls on 17 August and the median first autumn frost on 20 June, which leaves a median of 304 days between them.

Fitted over all years, the growing season changes by +8.4 days per decade at this station.

Frost dates and growing season at Buenos Aires Observ
Measure	Median, all years	Earliest period	Recent period (1936 to 1991)	Recent against earliest	Fitted trend
Last spring frost	17 August	n/a	9 August	n/a	-3.9 days per decade
First autumn frost	20 June	n/a	26 June	n/a	+4.5 days per decade
Growing days	304 days	n/a	320 days	n/a	+8.4 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Download the Data

Data for Buenos Aires Observ standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Buenos Aires Observ threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-17. Last revised 17 October 2026 (2026-10-17).