Bahia Blanca Aero Weather Records (AR000877500)

Record envelope, standing records and threshold days for Bahia Blanca Aero (AR000877500), Argentina, with 70 years of record.

Key Facts for Bahia Blanca Aero

Bahia Blanca Aero (AR000877500) is a weather station in Argentina at -38.73 latitude and -62.17 longitude, 75 m (246 ft) above sea level.
The station reports from 1956 to 2025, 70 years of record.
1,464 records set at Bahia Blanca Aero still stand.
Records are tracked for tmax, tmin: an element needs 30 years of data to be eligible.
Bahia Blanca Aero set a daily record low minimum temperature of -4.9 C (23.2 F) on 15 August 2025.

About the Station

Location: Argentina, -38.73 latitude, -62.17 longitude.
Elevation: 75 m (246 ft).
Period of record: 1956 to 2025, 70 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 Bahia Blanca Aero. 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 Bahia Blanca Aero, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	43.8 C (110.8 F)	3.0 C (37.4 F)	n/a	n/a
Feb	41.3 C (106.3 F)	1.0 C (33.8 F)	n/a	n/a
Mar	40.1 C (104.2 F)	-1.5 C (29.3 F)	n/a	n/a
Apr	36.7 C (98.1 F)	-3.4 C (25.9 F)	n/a	n/a
May	30.4 C (86.7 F)	-6.4 C (20.5 F)	n/a	n/a
Jun	27.8 C (82.0 F)	-9.8 C (14.4 F)	n/a	n/a
Jul	27.0 C (80.6 F)	-11.8 C (10.8 F)	n/a	n/a
Aug	32.6 C (90.7 F)	-7.9 C (17.8 F)	n/a	n/a
Sep	32.5 C (90.5 F)	-7.3 C (18.9 F)	n/a	n/a
Oct	39.0 C (102.2 F)	-4.5 C (23.9 F)	n/a	n/a
Nov	38.4 C (101.1 F)	-1.5 C (29.3 F)	n/a	n/a
Dec	42.2 C (108.0 F)	2.4 C (36.3 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Bahia Blanca Aero still stand. 1960 holds the most, with 40.

Standing records at Bahia Blanca Aero by the year they were set
Year set	Standing records
1956	19
1957	29
1958	34
1959	33
1960	40
1961	27
1962	30
1963	11
1964	29
1965	38
1966	24
1967	23
1968	24
1969	17
1970	23
1971	38
1972	34
1973	24
1974	23
1975	30
1976	32
1977	32
1978	28
1979	21
1980	29
1981	23
1982	26
1983	16
1984	6
1985	12
1986	21
1987	14
1988	27
1989	22
1990	23
1991	17
1992	13
1993	26
1994	22
1995	26
1996	36
1997	25
1998	19
1999	11
2000	10
2001	26
2002	16
2003	20
2004	9
2005	16
2006	15
2007	21
2008	16
2009	10
2010	16
2011	10
2012	24
2013	31
2014	14
2015	15
2016	9
2017	14
2018	13
2019	10
2020	15
2021	13
2022	7
2023	16
2024	16
2025	5

All-Time Record Progression

2 new records

2 all-time records were set at Bahia Blanca Aero between 4 July 1988 and 17 January 2014. Each dot is a new record.

When Bahia Blanca Aero set new all-time records
Date	Kind	Detail
1988-07-04	Record low minimum temperature	Record low minimum temperature -11.8 C (10.8 F)
2014-01-17	Record high minimum temperature	Record high minimum temperature 28.5 C (83.3 F)

Wettest Day of Each Month

Nov: 258.1 mm (10.2 in)

The wettest day on record for each calendar month at Bahia Blanca Aero. The most was 258.1 mm (10.2 in) on 5 November 1974.

Record daily precipitation for each month at Bahia Blanca Aero
Month	Record daily precipitation (mm)	Date
Jan	181.1 mm (7.1 in)	26 January 1979
Feb	142.7 mm (5.6 in)	29 February 2008
Mar	210.1 mm (8.3 in)	7 March 2025
Apr	142.0 mm (5.6 in)	17 April 1998
May	127.0 mm (5.0 in)	19 May 2005
Jun	104.9 mm (4.1 in)	14 June 1980
Jul	90.9 mm (3.6 in)	13 July 1997
Aug	36.1 mm (1.4 in)	23 August 2014
Sep	142.0 mm (5.6 in)	24 September 1996
Oct	96.0 mm (3.8 in)	13 October 2002
Nov	258.1 mm (10.2 in)	5 November 1974
Dec	127.0 mm (5.0 in)	21 December 2008

Period of Record Coverage

1956 to 2025

70 years of record at Bahia Blanca Aero, 1956 to 2025. 23 years have data for under 90 percent of days and are left out of rankings: 1984, 2004, 2005, 2006, 2007, 2008, 2009, 2010 and others.

Days with data per year at Bahia Blanca Aero
Year	Days with data	Share of year	Complete
1956	330	90%	Yes
1957	365	100%	Yes
1958	337	92%	Yes
1959	365	100%	Yes
1960	366	100%	Yes
1961	365	100%	Yes
1962	365	100%	Yes
1963	364	100%	Yes
1964	362	99%	Yes
1965	365	100%	Yes
1966	364	100%	Yes
1967	365	100%	Yes
1968	366	100%	Yes
1969	365	100%	Yes
1970	364	100%	Yes
1971	364	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	365	100%	Yes
1979	364	100%	Yes
1980	366	100%	Yes
1981	364	100%	Yes
1982	364	100%	Yes
1983	339	93%	Yes
1984	13	4%	No
1985	365	100%	Yes
1986	365	100%	Yes
1987	364	100%	Yes
1988	364	99%	Yes
1989	365	100%	Yes
1990	365	100%	Yes
1991	365	100%	Yes
1992	366	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	347	95%	Yes
2002	355	97%	Yes
2003	358	98%	Yes
2004	252	69%	No
2005	185	51%	No
2006	96	26%	No
2007	189	52%	No
2008	181	49%	No
2009	111	30%	No
2010	198	54%	No
2011	205	56%	No
2012	188	51%	No
2013	189	52%	No
2014	204	56%	No
2015	191	52%	No
2016	194	53%	No
2017	197	54%	No
2018	175	48%	No
2019	181	50%	No
2020	181	49%	No
2021	186	51%	No
2022	170	47%	No
2023	171	47%	No
2024	133	36%	No
2025	116	32%	No

Latest Records

Latest records at Bahia Blanca Aero
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 August 2025	Bahia Blanca Aero, AR	daily low min	-4.9 C (23.2 F)	0.1 C (0.2 F)	15 years	11 of 100 (Routine)
1 July 2025	Bahia Blanca Aero, AR	daily low min	-6.6 C (20.1 F)	0.1 C (0.2 F)	55 years	23 of 100 (Routine)
21 March 2025	Bahia Blanca Aero, AR	daily high max	34.6 C (94.3 F)	0.5 C (0.9 F)	30 years	17 of 100 (Routine)
8 February 2025	Bahia Blanca Aero, AR	daily high max	38.4 C (101.1 F)	1.4 C (2.5 F)	12 years	13 of 100 (Routine)
8 January 2025	Bahia Blanca Aero, AR	daily high min	25.4 C (77.7 F)	0.7 C (1.3 F)	13 years	11 of 100 (Routine)
8 December 2024	Bahia Blanca Aero, AR	daily low min	2.8 C (37.0 F)	1.6 C (2.9 F)	29 years	17 of 100 (Routine)
23 November 2024	Bahia Blanca Aero, AR	daily high min	20.4 C (68.7 F)	0.2 C (0.4 F)	11 years	9 of 100 (Routine)
15 November 2024	Bahia Blanca Aero, AR	daily high max	33.9 C (93.0 F)	0.4 C (0.7 F)	65 years	25 of 100 (Routine)
31 October 2024	Bahia Blanca Aero, AR	monthly high min	21.3 C (70.3 F)	1.3 C (2.3 F)	34 years	29 of 100 (Routine)
31 October 2024	Bahia Blanca Aero, AR	daily high max	36.9 C (98.4 F)	2.8 C (5.0 F)	29 years	20 of 100 (Routine)
30 October 2024	Bahia Blanca Aero, AR	daily high min	18.8 C (65.8 F)	0.4 C (0.7 F)	8 years	8 of 100 (Routine)
20 October 2024	Bahia Blanca Aero, AR	daily high min	18.3 C (64.9 F)	0.5 C (0.9 F)	19 years	12 of 100 (Routine)
19 September 2024	Bahia Blanca Aero, AR	daily high max	28.9 C (84.0 F)	0.7 C (1.3 F)	66 years	26 of 100 (Routine)
18 September 2024	Bahia Blanca Aero, AR	daily high min	13.8 C (56.8 F)	0.4 C (0.7 F)	40 years	18 of 100 (Routine)
2 August 2024	Bahia Blanca Aero, AR	daily high min	12.0 C (53.6 F)	0.2 C (0.4 F)	10 years	9 of 100 (Routine)
23 July 2024	Bahia Blanca Aero, AR	daily high max	22.9 C (73.2 F)	2.3 C (4.1 F)	13 years	14 of 100 (Routine)
26 May 2024	Bahia Blanca Aero, AR	daily low min	-3.8 C (25.2 F)	0.8 C (1.4 F)	2 years	7 of 100 (Routine)
9 April 2024	Bahia Blanca Aero, AR	daily high max	30.6 C (87.1 F)	0.1 C (0.2 F)	5 years	7 of 100 (Routine)
9 February 2024	Bahia Blanca Aero, AR	daily high min (Tie)	22.2 C (72.0 F)	tie	10 years	2 of 100 (Routine)
7 February 2024	Bahia Blanca Aero, AR	daily high max	39.4 C (102.9 F)	0.9 C (1.6 F)	5 years	8 of 100 (Routine)

Climate Trend

45 complete years, 1957 to 2003

One stripe for each of 45 complete years at Bahia Blanca Aero, 1957 to 2003. Blue stripes are years cooler than the station's own mean of 15.5 C (59.9 F); red stripes are warmer. The coolest year was 1976, at 14.3 C (57.7 F), and the warmest was 2003, at 16.4 C (61.6 F). The strongest colour marks a difference of 1.3 C (2.3 F).

Annual mean temperature at Bahia Blanca Aero as warming stripes, 1957 to 2003
Year	Annual mean temperature	Difference from the station mean
1957	15.1 C	-0.44 C
1958	15.7 C	+0.18 C
1959	15.2 C	-0.34 C
1960	15.6 C	+0.07 C
1961	15.6 C	+0.07 C
1962	16.2 C	+0.65 C
1963	15.4 C	-0.12 C
1964	14.5 C	-0.98 C
1965	15.4 C	-0.10 C
1966	15.2 C	-0.33 C
1967	15.7 C	+0.14 C
1968	15.9 C	+0.37 C
1969	15.4 C	-0.16 C
1970	15.5 C	+0.01 C
1971	15.4 C	-0.14 C
1972	15.3 C	-0.20 C
1973	14.9 C	-0.59 C
1974	15.3 C	-0.23 C
1975	15.7 C	+0.14 C
1976	14.3 C	-1.26 C
1977	15.4 C	-0.12 C
1978	15.1 C	-0.39 C
1979	15.4 C	-0.07 C
1980	15.7 C	+0.16 C
1981	15.7 C	+0.22 C
1982	15.5 C	-0.01 C
1985	15.3 C	-0.21 C
1986	15.3 C	-0.24 C
1987	15.7 C	+0.20 C
1988	14.9 C	-0.65 C
1989	16.0 C	+0.51 C
1990	15.6 C	+0.04 C
1991	15.5 C	-0.04 C
1992	15.2 C	-0.29 C
1993	15.6 C	+0.11 C
1994	16.4 C	+0.85 C
1995	15.6 C	+0.12 C
1996	16.2 C	+0.65 C
1997	15.8 C	+0.32 C
1998	15.9 C	+0.42 C
1999	15.6 C	+0.06 C
2000	15.5 C	0.00 C
2001	16.2 C	+0.66 C
2002	15.6 C	+0.08 C
2003	16.4 C	+0.91 C

The annual mean temperature here has risen by 0.12 C (0.03 to 0.21) per decade over 1957 to 2003. In Fahrenheit: 0.2 F (0.1 to 0.4) per decade. The slope is a straight line fitted to 45 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Bahia Blanca Aero
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.12 C (0.03 to 0.21) per decade	0.2 F (0.1 to 0.4) per decade	1957 to 2003	45	Rise
Mean daily maximum	0.13 C (0.02 to 0.23) per decade	0.23 F (0.03 to 0.42) per decade	1957 to 2003	45	Rise
Mean daily minimum	0.12 C (0.02 to 0.21) per decade	0.21 F (0.03 to 0.38) per decade	1957 to 2003	45	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

1956 to 2025

Yearly extremes at Bahia Blanca Aero: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	43.8 C (110.8 F)	1980	39.5 C (103.1 F)	70
Coldest night (TNn)	-11.8 C (10.8 F)	1988	-5.6 C (21.9 F)	70
Wettest day (Rx1day)	258.1 mm (10.2 in)	1974	65.0 mm (2.6 in)	57
Wettest five days (Rx5day)	264.2 mm (10.4 in)	1974	86.4 mm (3.4 in)	53
Longest dry spell (CDD)	29 days	1998	5 days	57

Hottest day (TXx)

The hottest day of the year at Bahia Blanca Aero, 1956 to 2025. The record is 43.8 C (110.8 F) in 1980, marked on the chart; the median year is 39.5 C (103.1 F).

Hottest day (TXx) at Bahia Blanca Aero by year
Year	Hottest day (TXx)
1956	39.5 C (103.1 F)
1957	42.5 C (108.5 F)
1958	40.1 C (104.2 F)
1959	40.6 C (105.1 F)
1960	41.5 C (106.7 F)
1961	41.0 C (105.8 F)
1962	39.6 C (103.3 F)
1963	39.8 C (103.6 F)
1964	38.0 C (100.4 F)
1965	39.5 C (103.1 F)
1966	36.5 C (97.7 F)
1967	40.5 C (104.9 F)
1968	38.8 C (101.8 F)
1969	40.4 C (104.7 F)
1970	41.9 C (107.4 F)
1971	42.2 C (108.0 F)
1972	41.6 C (106.9 F)
1973	40.5 C (104.9 F)
1974	38.5 C (101.3 F)
1975	40.4 C (104.7 F)
1976	37.9 C (100.2 F)
1977	38.3 C (100.9 F)
1978	38.8 C (101.8 F)
1979	36.1 C (97.0 F)
1980	43.8 C (110.8 F)
1981	37.4 C (99.3 F)
1982	39.4 C (102.9 F)
1983	39.5 C (103.1 F)
1984	39.0 C (102.2 F)
1985	36.6 C (97.9 F)
1986	39.6 C (103.3 F)
1987	40.2 C (104.4 F)
1988	39.8 C (103.6 F)
1989	41.2 C (106.2 F)
1990	42.0 C (107.6 F)
1991	38.8 C (101.8 F)
1992	36.2 C (97.2 F)
1993	38.8 C (101.8 F)
1994	39.1 C (102.4 F)
1995	38.0 C (100.4 F)
1996	38.0 C (100.4 F)
1997	40.1 C (104.2 F)
1998	37.9 C (100.2 F)
1999	40.1 C (104.2 F)
2000	39.1 C (102.4 F)
2001	41.5 C (106.7 F)
2002	36.3 C (97.3 F)
2003	39.7 C (103.5 F)
2004	38.0 C (100.4 F)
2005	35.5 C (95.9 F)
2006	41.4 C (106.5 F)
2007	40.0 C (104.0 F)
2008	38.0 C (100.4 F)
2009	40.3 C (104.5 F)
2010	39.5 C (103.1 F)
2011	39.0 C (102.2 F)
2012	41.4 C (106.5 F)
2013	40.8 C (105.4 F)
2014	40.4 C (104.7 F)
2015	38.6 C (101.5 F)
2016	39.2 C (102.6 F)
2017	40.3 C (104.5 F)
2018	40.2 C (104.4 F)
2019	38.6 C (101.5 F)
2020	38.8 C (101.8 F)
2021	39.3 C (102.7 F)
2022	43.6 C (110.5 F)
2023	40.4 C (104.7 F)
2024	39.4 C (102.9 F)
2025	39.3 C (102.7 F)

Coldest night (TNn)

The coldest night of the year at Bahia Blanca Aero, 1956 to 2025. The record is -11.8 C (10.8 F) in 1988, marked on the chart; the median year is -5.6 C (21.9 F).

Coldest night (TNn) at Bahia Blanca Aero by year
Year	Coldest night (TNn)
1956	-4.8 C (23.4 F)
1957	-6.8 C (19.8 F)
1958	-3.7 C (25.3 F)
1959	-5.5 C (22.1 F)
1960	-5.8 C (21.6 F)
1961	-7.3 C (18.9 F)
1962	-6.5 C (20.3 F)
1963	-4.4 C (24.1 F)
1964	-5.8 C (21.6 F)
1965	-5.8 C (21.6 F)
1966	-5.3 C (22.5 F)
1967	-8.5 C (16.7 F)
1968	-4.0 C (24.8 F)
1969	-5.3 C (22.5 F)
1970	-7.7 C (18.1 F)
1971	-7.5 C (18.5 F)
1972	-5.6 C (21.9 F)
1973	-5.0 C (23.0 F)
1974	-6.7 C (19.9 F)
1975	-6.5 C (20.3 F)
1976	-7.7 C (18.1 F)
1977	-9.2 C (15.4 F)
1978	-7.6 C (18.3 F)
1979	-5.1 C (22.8 F)
1980	-7.1 C (19.2 F)
1981	-6.5 C (20.3 F)
1982	-4.6 C (23.7 F)
1983	-6.5 C (20.3 F)
1984	-5.7 C (21.7 F)
1985	-7.3 C (18.9 F)
1986	-5.4 C (22.3 F)
1987	-5.4 C (22.3 F)
1988	-11.8 C (10.8 F)
1989	-5.6 C (21.9 F)
1990	-7.6 C (18.3 F)
1991	-5.3 C (22.5 F)
1992	-5.4 C (22.3 F)
1993	-6.1 C (21.0 F)
1994	-4.6 C (23.7 F)
1995	-8.2 C (17.2 F)
1996	-4.4 C (24.1 F)
1997	-4.0 C (24.8 F)
1998	-4.5 C (23.9 F)
1999	-4.2 C (24.4 F)
2000	-4.5 C (23.9 F)
2001	-3.8 C (25.2 F)
2002	-9.8 C (14.4 F)
2003	-4.4 C (24.1 F)
2004	-4.6 C (23.7 F)
2005	-9.0 C (15.8 F)
2006	-4.9 C (23.2 F)
2007	-10.0 C (14.0 F)
2008	-5.8 C (21.6 F)
2009	-4.5 C (23.9 F)
2010	-7.6 C (18.3 F)
2011	-3.2 C (26.2 F)
2012	-7.6 C (18.3 F)
2013	-7.9 C (17.8 F)
2014	-5.0 C (23.0 F)
2015	-8.0 C (17.6 F)
2016	-5.4 C (22.3 F)
2017	-3.4 C (25.9 F)
2018	-5.6 C (21.9 F)
2019	-7.5 C (18.5 F)
2020	-4.3 C (24.3 F)
2021	-4.3 C (24.3 F)
2022	-4.5 C (23.9 F)
2023	-6.3 C (20.7 F)
2024	-5.4 C (22.3 F)
2025	-6.6 C (20.1 F)

Wettest day (Rx1day)

The wettest day of the year at Bahia Blanca Aero, 1956 to 2025. The record is 258.1 mm (10.2 in) in 1974, marked on the chart; the median year is 65.0 mm (2.6 in).

Wettest day (Rx1day) at Bahia Blanca Aero by year
Year	Wettest day (Rx1day)
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	61.0 mm (2.4 in)
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	0.5 mm (0.02 in)
1966	n/a
1967	45.0 mm (1.8 in)
1968	49.0 mm (1.9 in)
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	38.1 mm (1.5 in)
1974	258.1 mm (10.2 in)
1975	25.9 mm (1.0 in)
1976	54.1 mm (2.1 in)
1977	247.9 mm (9.8 in)
1978	179.1 mm (7.1 in)
1979	181.1 mm (7.1 in)
1980	104.9 mm (4.1 in)
1981	70.1 mm (2.8 in)
1982	132.1 mm (5.2 in)
1983	58.9 mm (2.3 in)
1984	99.1 mm (3.9 in)
1985	0.0 mm (0.00 in)
1986	2.0 mm (0.08 in)
1987	24.9 mm (1.0 in)
1988	71.9 mm (2.8 in)
1989	68.1 mm (2.7 in)
1990	89.9 mm (3.5 in)
1991	99.1 mm (3.9 in)
1992	67.1 mm (2.6 in)
1993	65.0 mm (2.6 in)
1994	74.9 mm (2.9 in)
1995	59.9 mm (2.4 in)
1996	142.0 mm (5.6 in)
1997	90.9 mm (3.6 in)
1998	142.0 mm (5.6 in)
1999	20.6 mm (0.8 in)
2000	34.0 mm (1.3 in)
2001	45.2 mm (1.8 in)
2002	96.0 mm (3.8 in)
2003	55.9 mm (2.2 in)
2004	63.0 mm (2.5 in)
2005	127.0 mm (5.0 in)
2006	49.0 mm (1.9 in)
2007	122.9 mm (4.8 in)
2008	142.7 mm (5.6 in)
2009	67.1 mm (2.6 in)
2010	47.0 mm (1.9 in)
2011	46.0 mm (1.8 in)
2012	45.0 mm (1.8 in)
2013	39.1 mm (1.5 in)
2014	56.9 mm (2.2 in)
2015	55.9 mm (2.2 in)
2016	47.0 mm (1.9 in)
2017	85.1 mm (3.4 in)
2018	73.9 mm (2.9 in)
2019	104.1 mm (4.1 in)
2020	59.9 mm (2.4 in)
2021	61.0 mm (2.4 in)
2022	89.9 mm (3.5 in)
2023	59.9 mm (2.4 in)
2024	135.9 mm (5.4 in)
2025	210.1 mm (8.3 in)

Wettest five days (Rx5day)

The wettest five days of the year at Bahia Blanca Aero, 1956 to 2025. The record is 264.2 mm (10.4 in) in 1974, marked on the chart; the median year is 86.4 mm (3.4 in).

Wettest five days (Rx5day) at Bahia Blanca Aero by year
Year	Wettest five days (Rx5day)
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	96.9 mm (3.8 in)
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	38.1 mm (1.5 in)
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	41.1 mm (1.6 in)
1974	264.2 mm (10.4 in)
1975	34.3 mm (1.4 in)
1976	84.1 mm (3.3 in)
1977	256.0 mm (10.1 in)
1978	261.4 mm (10.3 in)
1979	213.1 mm (8.4 in)
1980	113.0 mm (4.4 in)
1981	112.5 mm (4.4 in)
1982	134.1 mm (5.3 in)
1983	44.0 mm (1.7 in)
1984	67.6 mm (2.7 in)
1985	0.0 mm (0.00 in)
1986	n/a
1987	43.2 mm (1.7 in)
1988	130.1 mm (5.1 in)
1989	72.7 mm (2.9 in)
1990	89.9 mm (3.5 in)
1991	86.8 mm (3.4 in)
1992	93.9 mm (3.7 in)
1993	82.0 mm (3.2 in)
1994	98.1 mm (3.9 in)
1995	60.9 mm (2.4 in)
1996	142.5 mm (5.6 in)
1997	99.8 mm (3.9 in)
1998	165.6 mm (6.5 in)
1999	27.5 mm (1.1 in)
2000	11.4 mm (0.4 in)
2001	49.8 mm (2.0 in)
2002	118.2 mm (4.7 in)
2003	86.7 mm (3.4 in)
2004	102.9 mm (4.1 in)
2005	127.0 mm (5.0 in)
2006	41.9 mm (1.6 in)
2007	135.9 mm (5.4 in)
2008	169.9 mm (6.7 in)
2009	70.6 mm (2.8 in)
2010	86.4 mm (3.4 in)
2011	118.9 mm (4.7 in)
2012	17.5 mm (0.7 in)
2013	64.0 mm (2.5 in)
2014	94.3 mm (3.7 in)
2015	48.0 mm (1.9 in)
2016	50.0 mm (2.0 in)
2017	81.1 mm (3.2 in)
2018	47.8 mm (1.9 in)
2019	135.1 mm (5.3 in)
2020	57.9 mm (2.3 in)
2021	65.0 mm (2.6 in)
2022	154.0 mm (6.1 in)
2023	25.9 mm (1.0 in)
2024	27.9 mm (1.1 in)
2025	n/a

Longest dry spell (CDD)

The longest dry spell of the year at Bahia Blanca Aero, 1956 to 2025. The record is 29 days in 1998, marked on the chart; the median year is 5 days.

Longest dry spell (CDD) at Bahia Blanca Aero by year
Year	Longest dry spell (CDD)
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	5 days
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	1 day
1966	n/a
1967	1 day
1968	4 days
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	11 days
1974	16 days
1975	4 days
1976	6 days
1977	22 days
1978	12 days
1979	15 days
1980	20 days
1981	17 days
1982	5 days
1983	3 days
1984	5 days
1985	8 days
1986	3 days
1987	5 days
1988	7 days
1989	7 days
1990	8 days
1991	7 days
1992	8 days
1993	10 days
1994	13 days
1995	10 days
1996	11 days
1997	19 days
1998	29 days
1999	5 days
2000	6 days
2001	3 days
2002	12 days
2003	19 days
2004	19 days
2005	13 days
2006	5 days
2007	3 days
2008	3 days
2009	3 days
2010	4 days
2011	3 days
2012	2 days
2013	3 days
2014	3 days
2015	4 days
2016	5 days
2017	3 days
2018	5 days
2019	3 days
2020	3 days
2021	4 days
2022	4 days
2023	3 days
2024	2 days
2025	1 day

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

45 years with a frost

Across 45 years with a frost, the median last spring frost at Bahia Blanca Aero falls on 6 October and the median first autumn frost on 4 May, which leaves a median of 214 days between them.

Fitted over all years, the growing season changes by +8.3 days per decade at this station.

Frost dates and growing season at Bahia Blanca Aero
Measure	Median, all years	Earliest period	Recent period (1972 to 2003)	Recent against earliest	Fitted trend
Last spring frost	6 October	n/a	5 October	n/a	-4.6 days per decade
First autumn frost	4 May	n/a	8 May	n/a	+3.7 days per decade
Growing days	214 days	n/a	217 days	n/a	+8.3 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 Bahia Blanca Aero standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Bahia Blanca Aero 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-15. Last revised 15 October 2026 (2026-10-15).