Heat wave in Argentina and 5 other countries, 3 to 17 February 2025

Name: Heat wave in Argentina and 5 other countries, 3 to 17 February 2025
Start: 2025-02-03
End: 2025-02-17
Location: Argentina, Uruguay, Paraguay, Bolivia, Brazil, Chile

Heat wave in Argentina and 5 other countries, 3 to 17 February 2025: 153 records at 57 stations, peak on 10 February 2025. Closed.

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

Key Facts

Heat wave in Argentina and 5 other countries, 3 to 17 February 2025 set or tied 153 station records at 57 stations.
It ran from 3 February 2025 to 17 February 2025 (15 days) and its peak day was 10 February 2025.
Status: closed.
Buenos Aires Observ set a daily record high maximum temperature of 38.5 C (101.3 F) on 11 February 2025.
The busiest day was 10 February 2025 with 19 records.
The oldest broken record in the ranked list had stood for 83 years.

Footprint

3 to 17 February 2025

The area covered by Heat wave in Argentina and 5 other countries, 3 to 17 February 2025 is outlined, with 13 of the stations that set records marked, coloured by record type. Made with Natural Earth.

Footprint of Heat wave in Argentina and 5 other countries, 3 to 17 February 2025: stations that set records in the event
Station	Type	Value	Date
Buenos Aires Observ	Record high maximum temperature	38.5 C (101.3 F)	2025-02-11
San Luis	Record high minimum temperature	27.0 C (80.6 F)	2025-02-10
Mercedes	Record high maximum temperature	38.2 C (100.8 F)	2025-02-11
San Juan Bautista	Record high minimum temperature	27.0 C (80.6 F)	2025-02-05
Cordoba Aero	Record high minimum temperature	24.7 C (76.5 F)	2025-02-11
La Rioja Aero.	Record high minimum temperature	26.0 C (78.8 F)	2025-02-10
Pehuajo Aero	Record high maximum temperature	37.6 C (99.7 F)	2025-02-11
Pilar	Record high minimum temperature	27.2 C (81.0 F)	2025-02-16
Resistencia Aero	Record high minimum temperature	26.2 C (79.2 F)	2025-02-16
Las Lomitas	Record high maximum temperature	42.5 C (108.5 F)	2025-02-05
Santiago del Estero	Record high maximum temperature	44.2 C (111.6 F)	2025-02-06
Salta Aero	Record high maximum temperature	32.2 C (90.0 F)	2025-02-13
Paysandu	Record high minimum temperature	22.2 C (72.0 F)	2025-02-03

Records per Day

Peak day 19

Records set or tied each day from 3 February 2025 to 17 February 2025. The most in one day was 19 on 10 February 2025.

Records per day during Heat wave in Argentina and 5 other countries, 3 to 17 February 2025
Date	Records
2025-02-03	13
2025-02-04	13
2025-02-05	15
2025-02-06	10
2025-02-07	5
2025-02-08	13
2025-02-09	13
2025-02-10	19
2025-02-11	16
2025-02-12	9
2025-02-13	4
2025-02-14	5
2025-02-15	8
2025-02-16	6
2025-02-17	4

Top Records by Margin

Margin over the record replaced

Top records of Heat wave in Argentina and 5 other countries, 3 to 17 February 2025 ranked by margin
San Luis, 02-10	5.0 C (9.0 F)
Pilar, 02-16	3.2 C (5.8 F)
Santiago del Estero, 02-06	2.8 C (5.0 F)
Resistencia Aero, 02-16	2.3 C (4.1 F)
Pehuajo Aero, 02-11	2.2 C (4.0 F)
Las Lomitas, 02-05	2.1 C (3.8 F)
Cordoba Aero, 02-10	2.1 C (3.8 F)
San Juan Bautista, 02-12	2.0 C (3.6 F)
Buenos Aires Observ, 02-11	1.9 C (3.4 F)
Cordoba Aero, 02-11	1.5 C (2.7 F)
Mercedes, 02-11	1.2 C (2.2 F)
San Juan Bautista, 02-05	1.0 C (1.8 F)
La Rioja Aero., 02-10	1.0 C (1.8 F)
Paysandu, 02-10	1.0 C (1.8 F)
Cordoba Aero, 02-11	0.5 C (0.9 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

153 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 5 other countries, 3 to 17 February 2025
Margin (C)	Years the old record stood
1.9	83
5.0	50
1.2	83
0.4	83
0.5	50
1.0	49
1.0	67
1.5	67
2.2	65
3.2	48
2.3	56
2.1	56
0.4	67
2.8	53
0.4	67
2.0	50
0.3	67
2.1	50
1.0	50
0.2	60
1.3	53
1.3	50
0.2	66
2.1	50
0.3	57
3.0	36
1.6	50
0.8	54
0.4	59
0.3	56
0.8	50
1.0	50
2.0	41
0.9	50
1.3	46
1.0	50
2.6	35
0.1	55
0.3	56
0.5	50
1.9	39
4.6	15
1.5	46
0.9	47
1.0	49
1.3	53
0.6	50
1.7	41
0.6	52
1.0	48
0.6	22
0.1	46
0.9	46
0.3	50
0.1	50
4.6	7
1.6	42
1.6	35
0.3	50
1.2	41
0.6	45
0.8	39
0.5	12
0.5	44
0.8	0
1.2	0
0.3	8
2.0	24
0.4	1
0.6	1
1.1	24
1.0	28
1.0	28
0.1	41
0.7	24
0.2	33
0.4	0
2.7	11
0.7	35
0.5	35
2.4	22
0.2	0
0.1	35
0.9	24
1.9	22
0.5	26
3.0	1
2.1	12
1.4	18
0.7	24
1.0	22
1.2	10
1.4	12
0.5	24
1.3	19
0.4	24
1.9	5
1.6	13
0.7	22
1.3	11
0.8	13
0.8	11
1.4	10
0.1	24
2.1	9
1.0	15
1.1	7
0.5	1
0.1	22
1.3	13
1.2	12
0.6	18
1.6	10
1.5	2
1.6	2
0.2	11
0.4	7
0.9	13
0.1	14
1.4	5
0.7	10
0.2	19
0.5	15
1.0	5
0.6	10
0.6	14
0.6	5
0.5	8
0.4	7
0.3	9
0.5	9
0.7	9
1.2	2
0.5	13
1.1	5
0.8	5
0.4	11
0.7	1
0.2	5
0.2	5
0.8	1
0.2	12
1.4	1
0.2	12
0.1	1
0.5	1
0.6	1
0.4	5
0.3	9
0.8	2
0.2	9
0.4	1
0.2	1

Compared With Other Events

Station records per event

Station records in Heat wave in Argentina and 5 other countries, 3 to 17 February 2025 compared with similar events
Heat wave in United States and Mexico, 16 January to 14 February 2024	9,869 records
Heat wave in United States, 28 January to 24 February 2026	6,528 records
Heat wave in United States and Mexico, 24 May to 19 June 2020	5,047 records
Heat wave in United States and Mexico, 26 March to 17 April 2021	3,669 records
Heat wave in Germany and 49 other countries, 18 December 2021 to 15 January 2022	3,626 records
Heat wave in Argentina and 5 other countries, 3 to 17 February 2025 (this event)	153 records

Every Record Set

20 of 153

Every record set or tied during Heat wave in Argentina and 5 other countries, 3 to 17 February 2025, in date order
Date	Station	Record	Value	Margin	Years stood	Significance
2025-02-03	Paysandu	Record high minimum temperature	22.2 C (72.0 F)	0.2 C (0.4 F)	60	27 of 100 (Routine)
2025-02-05	San Juan Bautista	Record high minimum temperature	27.0 C (80.6 F)	1.0 C (1.8 F)	49	33 of 100 (Routine)
2025-02-05	Las Lomitas	Record high maximum temperature	42.5 C (108.5 F)	2.1 C (3.8 F)	56	28 of 100 (Routine)
2025-02-06	Santiago del Estero	Record high maximum temperature	44.2 C (111.6 F)	2.8 C (5.0 F)	53	28 of 100 (Routine)
2025-02-10	San Luis	Record high minimum temperature	27.0 C (80.6 F)	5.0 C (9.0 F)	50	36 of 100 (Notable)
2025-02-10	Mercedes	Record high minimum temperature	23.4 C (74.1 F)	0.4 C (0.7 F)	83	34 of 100 (Routine)
2025-02-10	La Rioja Aero.	Record high minimum temperature	26.0 C (78.8 F)	1.0 C (1.8 F)	67	30 of 100 (Routine)
2025-02-10	Cordoba Aero	Record high maximum temperature	39.5 C (103.1 F)	2.1 C (3.8 F)	50	27 of 100 (Routine)
2025-02-10	Paysandu	Record high minimum temperature	24.0 C (75.2 F)	1.0 C (1.8 F)	50	27 of 100 (Routine)
2025-02-11	Buenos Aires Observ	Record high maximum temperature	38.5 C (101.3 F)	1.9 C (3.4 F)	83	39 of 100 (Notable)
2025-02-11	Mercedes	Record high maximum temperature	38.2 C (100.8 F)	1.2 C (2.2 F)	83	36 of 100 (Notable)
2025-02-11	Cordoba Aero	Record high minimum temperature	24.7 C (76.5 F)	0.5 C (0.9 F)	50	33 of 100 (Routine)
2025-02-11	Cordoba Aero	Record high maximum temperature	39.3 C (102.7 F)	1.5 C (2.7 F)	67	30 of 100 (Routine)
2025-02-11	Pehuajo Aero	Record high maximum temperature	37.6 C (99.7 F)	2.2 C (4.0 F)	65	30 of 100 (Routine)
2025-02-11	Las Lomitas	Record high maximum temperature	41.5 C (106.7 F)	0.4 C (0.7 F)	67	28 of 100 (Routine)
2025-02-12	San Juan Bautista	Record high minimum temperature	27.0 C (80.6 F)	2.0 C (3.6 F)	50	28 of 100 (Routine)
2025-02-12	Las Lomitas	Record high maximum temperature	41.4 C (106.5 F)	0.3 C (0.5 F)	67	27 of 100 (Routine)
2025-02-13	Salta Aero	Record high maximum temperature	32.2 C (90.0 F)	0.4 C (0.7 F)	67	28 of 100 (Routine)
2025-02-16	Pilar	Record high minimum temperature	27.2 C (81.0 F)	3.2 C (5.8 F)	48	30 of 100 (Routine)
2025-02-16	Resistencia Aero	Record high minimum temperature	26.2 C (79.2 F)	2.3 C (4.1 F)	56	29 of 100 (Routine)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 153 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.

Margin (C)	Years the old record stood
1.9	83
5.0	50
1.2	83
0.4	83
0.5	50
1.0	49
1.0	67
1.5	67
2.2	65
3.2	48
2.3	56
2.1	56
0.4	67
2.8	53
0.4	67
2.0	50
0.3	67
2.1	50
1.0	50
0.2	60
1.3	53
1.3	50
0.2	66
2.1	50
0.3	57
3.0	36
1.6	50
0.8	54
0.4	59
0.3	56
0.8	50
1.0	50
2.0	41
0.9	50
1.3	46
1.0	50
2.6	35
0.1	55
0.3	56
0.5	50
1.9	39
4.6	15
1.5	46
0.9	47
1.0	49
1.3	53
0.6	50
1.7	41
0.6	52
1.0	48
0.6	22
0.1	46
0.9	46
0.3	50
0.1	50
4.6	7
1.6	42
1.6	35
0.3	50
1.2	41
0.6	45
0.8	39
0.5	12
0.5	44
0.8	0
1.2	0
0.3	8
2.0	24
0.4	1
0.6	1
1.1	24
1.0	28
1.0	28
0.1	41
0.7	24
0.2	33
0.4	0
2.7	11
0.7	35
0.5	35
2.4	22
0.2	0
0.1	35
0.9	24
1.9	22
0.5	26
3.0	1
2.1	12
1.4	18
0.7	24
1.0	22
1.2	10
1.4	12
0.5	24
1.3	19
0.4	24
1.9	5
1.6	13
0.7	22
1.3	11
0.8	13
0.8	11
1.4	10
0.1	24
2.1	9
1.0	15
1.1	7
0.5	1
0.1	22
1.3	13
1.2	12
0.6	18
1.6	10
1.5	2
1.6	2
0.2	11
0.4	7
0.9	13
0.1	14
1.4	5
0.7	10
0.2	19
0.5	15
1.0	5
0.6	10
0.6	14
0.6	5
0.5	8
0.4	7
0.3	9
0.5	9
0.7	9
1.2	2
0.5	13
1.1	5
0.8	5
0.4	11
0.7	1
0.2	5
0.2	5
0.8	1
0.2	12
1.4	1
0.2	12
0.1	1
0.5	1
0.6	1
0.4	5
0.3	9
0.8	2
0.2	9
0.4	1
0.2	1

Margin (C)	Years the old record stood
1.9	83
5.0	50
1.2	83
0.4	83
0.5	50
1.0	49
1.0	67
1.5	67
2.2	65
3.2	48
2.3	56
2.1	56
0.4	67
2.8	53
0.4	67
2.0	50
0.3	67
2.1	50
1.0	50
0.2	60
1.3	53
1.3	50
0.2	66
2.1	50
0.3	57
3.0	36
1.6	50
0.8	54
0.4	59
0.3	56
0.8	50
1.0	50
2.0	41
0.9	50
1.3	46
1.0	50
2.6	35
0.1	55
0.3	56
0.5	50
1.9	39
4.6	15
1.5	46
0.9	47
1.0	49
1.3	53
0.6	50
1.7	41
0.6	52
1.0	48
0.6	22
0.1	46
0.9	46
0.3	50
0.1	50
4.6	7
1.6	42
1.6	35
0.3	50
1.2	41
0.6	45
0.8	39
0.5	12
0.5	44
0.8	0
1.2	0
0.3	8
2.0	24
0.4	1
0.6	1
1.1	24
1.0	28
1.0	28
0.1	41
0.7	24
0.2	33
0.4	0
2.7	11
0.7	35
0.5	35
2.4	22
0.2	0
0.1	35
0.9	24
1.9	22
0.5	26
3.0	1
2.1	12
1.4	18
0.7	24
1.0	22
1.2	10
1.4	12
0.5	24
1.3	19
0.4	24
1.9	5
1.6	13
0.7	22
1.3	11
0.8	13
0.8	11
1.4	10
0.1	24
2.1	9
1.0	15
1.1	7
0.5	1
0.1	22
1.3	13
1.2	12
0.6	18
1.6	10
1.5	2
1.6	2
0.2	11
0.4	7
0.9	13
0.1	14
1.4	5
0.7	10
0.2	19
0.5	15
1.0	5
0.6	10
0.6	14
0.6	5
0.5	8
0.4	7
0.3	9
0.5	9
0.7	9
1.2	2
0.5	13
1.1	5
0.8	5
0.4	11
0.7	1
0.2	5
0.2	5
0.8	1
0.2	12
1.4	1
0.2	12
0.1	1
0.5	1
0.6	1
0.4	5
0.3	9
0.8	2
0.2	9
0.4	1
0.2	1