Category: Extremes affecting Argentina

Cold spell occuring from October 07 2025 to October 09 2025 at -25.0°S 304.0°E

Download data: JSON

Event type: Cold spell

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

  • Argentina
  • Brazil
  • Paraguay

Duration: 3 days

Time span: October 07 2025 to October 09 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -5.6 °C
  • Mean temperature: 16.4 °C
  • Minimum temperature anomaly: -8.6 °C
  • Minimum temperature: 12.2 °C

Event center: -25.0°S 304.0°E

Area affected: 120196 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-Oct-07_to_2025-Oct-09_304.0_-25.0

Heat wave occuring from October 03 2025 to October 05 2025 at -30.5°S 296.5°E

Download data: JSON

Event type: Heat wave

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

  • Argentina

Duration: 3 days

Time span: October 03 2025 to October 05 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 6.4 °C
  • Mean temperature: 25.6 °C
  • Maximum temperature anomaly: 10.6 °C
  • Maximum temperature: 32.2 °C

Event center: -30.5°S 296.5°E

Area affected: 74775 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-Oct-03_to_2025-Oct-05_296.5_-30.5

Heat wave occuring from September 25 2025 to October 08 2025 at -47.0°S 311.5°E

Download data: JSON

Event type: Heat wave

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

  • Argentina
  • Brazil
  • Chile
  • Uruguay

Duration: 14 days

Time span: September 25 2025 to October 08 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 3.5 °C
  • Mean temperature: 13.0 °C
  • Maximum temperature anomaly: 11.9 °C
  • Maximum temperature: 28.9 °C

Event center: -47.0°S 311.5°E

Area affected: 6454987 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-Sep-25_to_2025-Oct-08_311.5_-47.0

Heat wave occuring from September 24 2025 to September 28 2025 at -51.5°S 290.0°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: September 24 2025 to September 28 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 3.7 °C
  • Mean temperature: 8.8 °C
  • Maximum temperature anomaly: 6.4 °C
  • Maximum temperature: 14.0 °C

Event center: -51.5°S 290.0°E

Area affected: 98346 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-Sep-24_to_2025-Sep-28_290.0_-51.5

Cold spell occuring from September 04 2025 to September 07 2025 at -32.5°S 302.5°E

Download data: JSON

Event type: Cold spell

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

  • Argentina
  • Brazil
  • Paraguay
  • Uruguay

Duration: 4 days

Time span: September 04 2025 to September 07 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -6.3 °C
  • Mean temperature: 9.0 °C
  • Minimum temperature anomaly: -8.3 °C
  • Minimum temperature: 4.0 °C

Event center: -32.5°S 302.5°E

Area affected: 583764 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-Sep-04_to_2025-Sep-07_302.5_-32.5

Heat wave occuring from September 01 2025 to October 03 2025 at -39.0°S 283.5°E

Download data: JSON

Event type: Heat wave

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

  • Antarctica
  • Argentina
  • Chile

Duration: 33 days

Time span: September 01 2025 to October 03 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 9.9 °C
  • Mean temperature: -24.6 °C
  • Maximum temperature anomaly: 22.2 °C
  • Maximum temperature: 19.9 °C

Event center: -39.0°S 283.5°E

Area affected: 21140511 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-Sep-01_to_2025-Oct-03_283.5_-39.0

Heat wave occuring from August 26 2025 to August 29 2025 at -34.5°S 293.0°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: August 26 2025 to August 29 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 6.2 °C
  • Mean temperature: 18.6 °C
  • Maximum temperature anomaly: 7.5 °C
  • Maximum temperature: 21.2 °C

Event center: -34.5°S 293.0°E

Area affected: 76820 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-26_to_2025-Aug-29_293.0_-34.5

Cold spell occuring from August 24 2025 to August 28 2025 at -19.5°S 294.5°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
  • Paraguay
  • Peru

Duration: 5 days

Time span: August 24 2025 to August 28 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -7.9 °C
  • Mean temperature: 14.6 °C
  • Minimum temperature anomaly: -14.8 °C
  • Minimum temperature: -3.2 °C

Event center: -19.5°S 294.5°E

Area affected: 1258007 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-Aug-24_to_2025-Aug-28_294.5_-19.5

Heat wave occuring from August 23 2025 to September 01 2025 at -42.5°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: 10 days

Time span: August 23 2025 to September 01 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 3.2 °C
  • Mean temperature: 8.2 °C
  • Maximum temperature anomaly: 6.9 °C
  • Maximum temperature: 15.6 °C

Event center: -42.5°S 288.5°E

Area affected: 744641 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-23_to_2025-Sep-01_288.5_-42.5

Cold spell occuring from August 18 2025 to August 28 2025 at -27.0°S 290.5°E

Download data: JSON

Event type: Cold spell

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

  • Argentina
  • Bolivia, Plurinational State of
  • Chile
  • Peru

Duration: 11 days

Time span: August 18 2025 to August 28 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -4.7 °C
  • Mean temperature: 4.0 °C
  • Minimum temperature anomaly: -12.4 °C
  • Minimum temperature: -20.2 °C

Event center: -27.0°S 290.5°E

Area affected: 335789 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-Aug-18_to_2025-Aug-28_290.5_-27.0