Category: Extremes affecting Argentina

Heat wave occuring from August 14 2025 to August 20 2025 at -40.0°S 288.0°E

Download data: JSON

Event type: Heat wave

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Argentina
  • Chile

Duration: 7 days

Time span: August 14 2025 to August 20 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 3.7 °C
  • Mean temperature: 6.4 °C
  • Maximum temperature anomaly: 5.7 °C
  • Maximum temperature: 11.4 °C

Event center: -40.0°S 288.0°E

Area affected: 78740 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2025-Aug-14_to_2025-Aug-20_288.0_-40.0

Heat wave occuring from August 07 2025 to September 27 2025 at -8.0°S 307.0°E

Download data: JSON

Event type: Heat wave

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Argentina
  • Bolivia, Plurinational State of
  • Brazil
  • Chile
  • Ecuador
  • Paraguay
  • Peru
  • Uruguay

Duration: 52 days

Time span: August 07 2025 to September 27 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 3.5 °C
  • Mean temperature: 25.1 °C
  • Maximum temperature anomaly: 10.4 °C
  • Maximum temperature: 35.1 °C

Event center: -8.0°S 307.0°E

Area affected: 4616956 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2025-Aug-07_to_2025-Sep-27_307.0_-8.0

Heat wave occuring from August 06 2025 to August 10 2025 at -54.0°S 288.5°E

Download data: JSON

Event type: Heat wave

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Argentina
  • Chile

Duration: 5 days

Time span: August 06 2025 to August 10 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 3.5 °C
  • Mean temperature: 5.1 °C
  • Maximum temperature anomaly: 6.0 °C
  • Maximum temperature: 8.2 °C

Event center: -54.0°S 288.5°E

Area affected: 88518 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2025-Aug-06_to_2025-Aug-10_288.5_-54.0

Heat wave occuring from July 30 2025 to August 02 2025 at -38.5°S 301.0°E

Download data: JSON

Event type: Heat wave

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Argentina

Duration: 4 days

Time span: July 30 2025 to August 02 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 4.7 °C
  • Mean temperature: 12.8 °C
  • Maximum temperature anomaly: 6.7 °C
  • Maximum temperature: 15.5 °C

Event center: -38.5°S 301.0°E

Area affected: 152273 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2025-Jul-30_to_2025-Aug-02_301.0_-38.5

Cold spell occuring from July 24 2025 to July 29 2025 at -50.5°S 285.5°E

Download data: JSON

Event type: Cold spell

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Argentina
  • Chile

Duration: 6 days

Time span: July 24 2025 to July 29 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -5.8 °C
  • Mean temperature: -3.9 °C
  • Minimum temperature anomaly: -13.9 °C
  • Minimum temperature: -15.1 °C

Event center: -50.5°S 285.5°E

Area affected: 337792 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Cold_spell_2025-Jul-24_to_2025-Jul-29_285.5_-50.5

Heat wave occuring from July 21 2025 to August 23 2025 at -26.0°S 267.5°E

Download data: JSON

Event type: Heat wave

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Argentina
  • Chile

Duration: 34 days

Time span: July 21 2025 to August 23 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.9 °C
  • Mean temperature: 18.3 °C
  • Maximum temperature anomaly: 8.9 °C
  • Maximum temperature: 26.4 °C

Event center: -26.0°S 267.5°E

Area affected: 10281053 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2025-Jul-21_to_2025-Aug-23_267.5_-26.0

Heat wave occuring from July 17 2025 to July 31 2025 at -30.5°S 290.5°E

Download data: JSON

Event type: Heat wave

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Argentina
  • Chile

Duration: 15 days

Time span: July 17 2025 to July 31 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 5.6 °C
  • Mean temperature: 1.7 °C
  • Maximum temperature anomaly: 10.3 °C
  • Maximum temperature: 13.4 °C

Event center: -30.5°S 290.5°E

Area affected: 140451 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2025-Jul-17_to_2025-Jul-31_290.5_-30.5

Heat wave occuring from July 12 2025 to July 15 2025 at -42.0°S 299.5°E

Download data: JSON

Event type: Heat wave

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Argentina

Duration: 4 days

Time span: July 12 2025 to July 15 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 3.1 °C
  • Mean temperature: 11.6 °C
  • Maximum temperature anomaly: 5.8 °C
  • Maximum temperature: 13.1 °C

Event center: -42.0°S 299.5°E

Area affected: 73318 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2025-Jul-12_to_2025-Jul-15_299.5_-42.0

Heat wave occuring from June 30 2025 to July 15 2025 at -24.5°S 290.0°E

Download data: JSON

Event type: Heat wave

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Argentina
  • Bolivia, Plurinational State of
  • Chile

Duration: 16 days

Time span: June 30 2025 to July 15 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 5.2 °C
  • Mean temperature: 13.5 °C
  • Maximum temperature anomaly: 10.1 °C
  • Maximum temperature: 24.2 °C

Event center: -24.5°S 290.0°E

Area affected: 482214 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2025-Jun-30_to_2025-Jul-15_290.0_-24.5

Cold spell occuring from June 24 2025 to July 23 2025 at -12.0°S 310.0°E

Download data: JSON

Event type: Cold spell

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Argentina
  • Bolivia, Plurinational State of
  • Brazil
  • Chile
  • Colombia
  • Ecuador
  • Guyana
  • Paraguay
  • Peru
  • Uruguay
  • Venezuela, Bolivarian Republic of

Duration: 30 days

Time span: June 24 2025 to July 23 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -4.7 °C
  • Mean temperature: 12.5 °C
  • Minimum temperature anomaly: -17.5 °C
  • Minimum temperature: -18.7 °C

Event center: -12.0°S 310.0°E

Area affected: 11697282 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Cold_spell_2025-Jun-24_to_2025-Jul-23_310.0_-12.0