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Data as of 2026-10-17
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Built 2026-10-19 (19 October 2026)

Heat wave in Argentina and 4 other countries, 2 to 26 July 2023

Heat wave in Argentina and 4 other countries, 2 to 26 July 2023: 124 records at 49 stations, peak on 5 July 2023. Closed.

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

Key Facts

  • Heat wave in Argentina and 4 other countries, 2 to 26 July 2023 set or tied 124 station records at 49 stations.
  • It ran from 2 July 2023 to 26 July 2023 (25 days) and its peak day was 5 July 2023.
  • Status: closed.
  • Pehuajo Aero set a daily record high maximum temperature of 25.2 C (77.4 F) on 4 July 2023.
  • The busiest day was 5 July 2023 with 19 records.
  • The oldest broken record in the ranked list had stood for 64 years.

Footprint

2 to 26 July 2023
Footprint of Heat wave in Argentina and 4 other countries, 2 to 26 July 2023 The area covered by Heat wave in Argentina and 4 other countries, 2 to 26 July 2023 is outlined, with 16 of the stations that set records marked, coloured by record type.
The area covered by Heat wave in Argentina and 4 other countries, 2 to 26 July 2023 is outlined, with 16 of the stations that set records marked, coloured by record type. Made with Natural Earth.
Footprint of Heat wave in Argentina and 4 other countries, 2 to 26 July 2023: stations that set records in the event
StationTypeValueDate
Pehuajo AeroRecord high maximum temperature25.2 C (77.4 F)2023-07-04
Buenos Aires ObservRecord high maximum temperature25.0 C (77.0 F)2023-07-05
Bahia Blanca AeroRecord high maximum temperature23.2 C (73.8 F)2023-07-03
RivadaviaRecord high minimum temperature19.8 C (67.6 F)2023-07-03
Mendoza AeroRecord high maximum temperature22.6 C (72.7 F)2023-07-05
La Rioja Aero.Record high maximum temperature28.0 C (82.4 F)2023-07-06
AntofagastaRecord high minimum temperature16.5 C (61.7 F)2023-07-14
Santiago del EsteroRecord high maximum temperature30.7 C (87.3 F)2023-07-05
CamiriRecord high minimum temperature19.8 C (67.6 F)2023-07-08
OranRecord high minimum temperature17.3 C (63.1 F)2023-07-12
Coronel Carlos Ciriani SantaRecord high minimum temperature14.8 C (58.6 F)2023-07-02
San RafaelRecord high minimum temperature9.0 C (48.2 F)2023-07-04
Cordoba AeroRecord high maximum temperature29.1 C (84.4 F)2023-07-05
Parana AeroRecord high minimum temperature15.7 C (60.3 F)2023-07-03
CochabambaRecord high maximum temperature29.7 C (85.5 F)2023-07-09
YacuibaRecord high minimum temperature17.1 C (62.8 F)2023-07-11

Records per Day

Peak day 19
Records per day during Heat wave in Argentina and 4 other countries, 2 to 26 July 2023 Records set or tied each day from 2 July 2023 to 26 July 2023. The most in one day was 19 on 5 July 2023. 0 5 10 15 20 07-0207-0507-0807-1107-1407-1707-2107-24
Records set or tied each day from 2 July 2023 to 26 July 2023. The most in one day was 19 on 5 July 2023.
Records per day during Heat wave in Argentina and 4 other countries, 2 to 26 July 2023
DateRecords
2023-07-021
2023-07-0318
2023-07-0411
2023-07-0519
2023-07-068
2023-07-0710
2023-07-0811
2023-07-099
2023-07-107
2023-07-114
2023-07-126
2023-07-133
2023-07-143
2023-07-152
2023-07-161
2023-07-171
2023-07-181
2023-07-192
2023-07-212
2023-07-222
2023-07-231
2023-07-241
2023-07-261

Top Records by Margin

Margin over the record replaced
Top records of Heat wave in Argentina and 4 other countries, 2 to 26 July 2023 ranked by margin
Pehuajo Aero, 07-045.0 C (9.0 F)
Rivadavia, 07-052.8 C (5.0 F)
San Rafael, 07-042.6 C (4.7 F)
Rivadavia, 07-032.3 C (4.1 F)
Oran, 07-122.3 C (4.1 F)
Bahia Blanca Aero, 07-032.2 C (4.0 F)
Buenos Aires Observ, 07-051.7 C (3.1 F)
Yacuiba, 07-111.1 C (2.0 F)
Rivadavia, 07-040.9 C (1.6 F)
La Rioja Aero., 07-060.9 C (1.6 F)
Mendoza Aero, 07-050.9 C (1.6 F)
Santiago del Estero, 07-050.9 C (1.6 F)
Cochabamba, 07-090.9 C (1.6 F)
Camiri, 07-080.8 C (1.4 F)
Rivadavia, 07-070.6 C (1.1 F)

Margin is how far the new value is beyond the record it replaced. Ties are not shown.

Margin Against Age of the Broken Record

Margin against age of the broken record in Heat wave in Argentina and 4 other countries, 2 to 26 July 2023 124 records plotted by how far they beat the old record (across) and how many years the old record had stood (up). Long standing records beaten by a wide margin sit in the top right. 0 20 40 60 80 0.01.32.53.85.0 Margin (C) Years the old record stood
124 records plotted by how far they beat the old record (across) and how many years the old record had stood (up). Long standing records beaten by a wide margin sit in the top right.
Margin against age of the broken record in Heat wave in Argentina and 4 other countries, 2 to 26 July 2023
Margin (C)Years the old record stood
5.056
1.756
2.264
2.364
2.864
0.964
0.956
0.956
0.226
0.656
0.956
2.344
0.828
0.156
0.256
2.636
0.125
0.454
0.940
1.148
1.425
1.329
0.313
0.148
3.024
0.540
3.316
2.925
0.744
0.448
0.640
1.416
0.240
1.225
2.032
2.920
0.244
0.440
0.638
1.716
0.140
0.932
2.020
0.240
0.240
1.032
1.016
2.024
3.017
1.432
0.138
0.138
0.138
0.716
0.625
0.529
1.129
1.924
1.410
1.410
1.84
0.525
0.425
0.525
0.332
1.024
0.325
0.325
3.15
1.022
0.332
0.521
1.010
0.814
0.520
0.325
2.112
0.520
0.622
0.613
1.41
1.15
0.317
0.316
0.912
0.325
0.616
2.16
1.22
1.85
0.612
1.75
1.95
0.117
0.712
0.613
1.014
0.84
0.78
1.39
1.09
0.212
0.712
0.88
0.212
0.212
0.26
0.212
0.212
1.54
0.112
0.74
0.75
0.42
0.60
0.70
0.80
0.80
0.25
0.60
0.21
0.22
0.10
0.20

Compared With Other Events

Station records per event
Station records in Heat wave in Argentina and 4 other countries, 2 to 26 July 2023 compared with similar events
Heat wave in United States and Mexico, 16 January to 14 February 20249,869 records
Heat wave in United States, 28 January to 24 February 20266,528 records
Heat wave in United States and Mexico, 24 May to 19 June 20205,047 records
Heat wave in United States and Mexico, 26 March to 17 April 20213,669 records
Heat wave in Germany and 49 other countries, 18 December 2021 to 15 January 20223,626 records
Heat wave in Argentina and 4 other countries, 2 to 26 July 2023 (this event)124 records

Every Record Set

20 of 124
Every record set or tied during Heat wave in Argentina and 4 other countries, 2 to 26 July 2023, in date order
DateStationRecordValueMarginYears stoodSignificance
2023-07-02Coronel Carlos Ciriani SantaRecord high minimum temperature14.8 C (58.6 F)0.1 C (0.2 F)2523 of 100 (Routine)
2023-07-03Bahia Blanca AeroRecord high maximum temperature23.2 C (73.8 F)2.2 C (4.0 F)6430 of 100 (Routine)
2023-07-03RivadaviaRecord high minimum temperature19.8 C (67.6 F)2.3 C (4.1 F)6429 of 100 (Routine)
2023-07-03Parana AeroRecord high minimum temperature15.7 C (60.3 F)0.4 C (0.7 F)5422 of 100 (Routine)
2023-07-04Pehuajo AeroRecord high maximum temperature25.2 C (77.4 F)5.0 C (9.0 F)5636 of 100 (Notable)
2023-07-04RivadaviaRecord high minimum temperature20.3 C (68.5 F)0.9 C (1.6 F)6426 of 100 (Routine)
2023-07-04San RafaelRecord high minimum temperature9.0 C (48.2 F)2.6 C (4.7 F)3623 of 100 (Routine)
2023-07-05Buenos Aires ObservRecord high maximum temperature25.0 C (77.0 F)1.7 C (3.1 F)5631 of 100 (Routine)
2023-07-05RivadaviaRecord high minimum temperature19.8 C (67.6 F)2.8 C (5.0 F)6429 of 100 (Routine)
2023-07-05Mendoza AeroRecord high maximum temperature22.6 C (72.7 F)0.9 C (1.6 F)5625 of 100 (Routine)
2023-07-05Santiago del EsteroRecord high maximum temperature30.7 C (87.3 F)0.9 C (1.6 F)5624 of 100 (Routine)
2023-07-05La Rioja Aero.Record high maximum temperature27.3 C (81.1 F)0.1 C (0.2 F)5623 of 100 (Routine)
2023-07-05Cordoba AeroRecord high maximum temperature29.1 C (84.4 F)0.2 C (0.4 F)5623 of 100 (Routine)
2023-07-06La Rioja Aero.Record high maximum temperature28.0 C (82.4 F)0.9 C (1.6 F)5625 of 100 (Routine)
2023-07-07RivadaviaRecord high minimum temperature18.8 C (65.8 F)0.6 C (1.1 F)5624 of 100 (Routine)
2023-07-08CamiriRecord high minimum temperature19.8 C (67.6 F)0.8 C (1.4 F)2824 of 100 (Routine)
2023-07-09CochabambaRecord high maximum temperature29.7 C (85.5 F)0.9 C (1.6 F)4021 of 100 (Routine)
2023-07-11YacuibaRecord high minimum temperature17.1 C (62.8 F)1.1 C (2.0 F)4821 of 100 (Routine)
2023-07-12OranRecord high minimum temperature17.3 C (63.1 F)2.3 C (4.1 F)4424 of 100 (Routine)
2023-07-14AntofagastaRecord high minimum temperature16.5 C (61.7 F)0.2 C (0.4 F)2625 of 100 (Routine)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 124 records the event counts. The counts above use the full total.

Download the Data

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. Events are found by this site from station records and are not official designations. Records are provisional until reprocessed.