Record highRecord low2026 daily maximum2026 daily minimum
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
Year with most
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
Complete yearUnder 90 percent of days
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.
Cooler than the station meanWarmer than the station mean
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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.