Category: Extremes affecting Argentina

Cold spell occuring from January 08 2026 to January 13 2026 at -25.5°S 303.0°E

Download data: JSON

Event type: Cold spell

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

  • Argentina
  • Brazil
  • Paraguay
  • Uruguay

Duration: 6 days

Time span: January 08 2026 to January 13 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -4.0 °C
  • Mean temperature: 22.2 °C
  • Minimum temperature anomaly: -6.4 °C
  • Minimum temperature: 17.4 °C

Event center: -25.5°S 303.0°E

Area affected: 610053 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_2026-Jan-08_to_2026-Jan-13_303.0_-25.5

Cold spell occuring from January 04 2026 to January 06 2026 at -26.5°S 303.0°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: January 04 2026 to January 06 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -4.6 °C
  • Mean temperature: 23.1 °C
  • Minimum temperature anomaly: -7.1 °C
  • Minimum temperature: 19.6 °C

Event center: -26.5°S 303.0°E

Area affected: 158198 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_2026-Jan-04_to_2026-Jan-06_303.0_-26.5

Cold spell occuring from January 01 2026 to January 09 2026 at -47.5°S 305.0°E

Download data: JSON

Event type: Cold spell

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

  • Argentina
  • Brazil
  • Uruguay

Duration: 9 days

Time span: January 01 2026 to January 09 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -3.4 °C
  • Mean temperature: 13.3 °C
  • Minimum temperature anomaly: -7.8 °C
  • Minimum temperature: 4.7 °C

Event center: -47.5°S 305.0°E

Area affected: 2994297 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_2026-Jan-01_to_2026-Jan-09_305.0_-47.5

Heat wave occuring from December 18 2025 to January 11 2026 at -34.0°S 307.0°E

Download data: JSON

Event type: Heat wave

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

  • Argentina
  • Brazil
  • Chile
  • Uruguay

Duration: 25 days

Time span: December 18 2025 to January 11 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 4.5 °C
  • Mean temperature: 22.2 °C
  • Maximum temperature anomaly: 11.7 °C
  • Maximum temperature: 34.9 °C

Event center: -34.0°S 307.0°E

Area affected: 1791321 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-Dec-18_to_2026-Jan-11_307.0_-34.0

Cold spell occuring from December 16 2025 to December 23 2025 at -24.5°S 291.0°E

Download data: JSON

Event type: Cold spell

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

  • Argentina
  • Chile

Duration: 8 days

Time span: December 16 2025 to December 23 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -2.2 °C
  • Mean temperature: 11.6 °C
  • Minimum temperature anomaly: -3.3 °C
  • Minimum temperature: 3.8 °C

Event center: -24.5°S 291.0°E

Area affected: 87408 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-Dec-16_to_2025-Dec-23_291.0_-24.5

Cold spell occuring from December 12 2025 to December 15 2025 at -47.5°S 288.0°E

Download data: JSON

Event type: Cold spell

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

  • Argentina
  • Chile

Duration: 4 days

Time span: December 12 2025 to December 15 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -2.7 °C
  • Mean temperature: 6.5 °C
  • Minimum temperature anomaly: -6.2 °C
  • Minimum temperature: -3.9 °C

Event center: -47.5°S 288.0°E

Area affected: 419339 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-Dec-12_to_2025-Dec-15_288.0_-47.5

Heat wave occuring from December 03 2025 to December 07 2025 at -35.5°S 301.5°E

Download data: JSON

Event type: Heat wave

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

  • Argentina
  • Uruguay

Duration: 5 days

Time span: December 03 2025 to December 07 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 5.1 °C
  • Mean temperature: 25.4 °C
  • Maximum temperature anomaly: 8.3 °C
  • Maximum temperature: 29.2 °C

Event center: -35.5°S 301.5°E

Area affected: 430113 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-Dec-03_to_2025-Dec-07_301.5_-35.5

Cold spell occuring from November 13 2025 to November 20 2025 at -21.0°S 306.0°E

Download data: JSON

Event type: Cold spell

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

  • Argentina
  • Brazil
  • Paraguay

Duration: 8 days

Time span: November 13 2025 to November 20 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -3.8 °C
  • Mean temperature: 21.1 °C
  • Minimum temperature anomaly: -5.8 °C
  • Minimum temperature: 15.4 °C

Event center: -21.0°S 306.0°E

Area affected: 452063 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-Nov-13_to_2025-Nov-20_306.0_-21.0

Cold spell occuring from November 06 2025 to November 11 2025 at -29.5°S 310.5°E

Download data: JSON

Event type: Cold spell

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

  • Argentina
  • Brazil
  • Uruguay

Duration: 6 days

Time span: November 06 2025 to November 11 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -4.8 °C
  • Mean temperature: 15.3 °C
  • Minimum temperature anomaly: -6.7 °C
  • Minimum temperature: 10.3 °C

Event center: -29.5°S 310.5°E

Area affected: 302949 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-Nov-06_to_2025-Nov-11_310.5_-29.5

Heat wave occuring from November 03 2025 to November 15 2025 at -44.0°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: 13 days

Time span: November 03 2025 to November 15 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 4.7 °C
  • Mean temperature: 12.6 °C
  • Maximum temperature anomaly: 9.7 °C
  • Maximum temperature: 22.6 °C

Event center: -44.0°S 288.0°E

Area affected: 334109 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-Nov-03_to_2025-Nov-15_288.0_-44.0