Category: Extremes affecting Brazil

Cold spell occuring from December 05 2025 to December 08 2025 at -9.5°S 316.5°E

Download data: JSON

Event type: Cold spell

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

  • Brazil

Duration: 4 days

Time span: December 05 2025 to December 08 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -2.8 °C
  • Mean temperature: 23.8 °C
  • Minimum temperature anomaly: -4.0 °C
  • Minimum temperature: 21.6 °C

Event center: -9.5°S 316.5°E

Area affected: 82190 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-05_to_2025-Dec-08_316.5_-9.5

Cold spell occuring from December 05 2025 to December 08 2025 at -13.0°S 308.5°E

Download data: JSON

Event type: Cold spell

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

  • Brazil

Duration: 4 days

Time span: December 05 2025 to December 08 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -2.2 °C
  • Mean temperature: 24.3 °C
  • Minimum temperature anomaly: -3.0 °C
  • Minimum temperature: 23.2 °C

Event center: -13.0°S 308.5°E

Area affected: 63325 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-05_to_2025-Dec-08_308.5_-13.0

Cold spell occuring from December 04 2025 to December 09 2025 at -17.0°S 313.0°E

Download data: JSON

Event type: Cold spell

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

  • Brazil

Duration: 6 days

Time span: December 04 2025 to December 09 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -2.4 °C
  • Mean temperature: 21.9 °C
  • Minimum temperature anomaly: -3.8 °C
  • Minimum temperature: 19.9 °C

Event center: -17.0°S 313.0°E

Area affected: 157998 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-04_to_2025-Dec-09_313.0_-17.0

Cold spell occuring from December 03 2025 to December 09 2025 at -13.5°S 300.5°E

Download data: JSON

Event type: Cold spell

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

  • Bolivia, Plurinational State of
  • Brazil

Duration: 7 days

Time span: December 03 2025 to December 09 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -1.9 °C
  • Mean temperature: 23.7 °C
  • Minimum temperature anomaly: -3.7 °C
  • Minimum temperature: 21.7 °C

Event center: -13.5°S 300.5°E

Area affected: 329690 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-03_to_2025-Dec-09_300.5_-13.5

Cold spell occuring from December 03 2025 to December 11 2025 at -7.5°S 290.0°E

Download data: JSON

Event type: Cold spell

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

  • Bolivia, Plurinational State of
  • Brazil
  • Peru

Duration: 9 days

Time span: December 03 2025 to December 11 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -1.5 °C
  • Mean temperature: 24.2 °C
  • Minimum temperature anomaly: -2.5 °C
  • Minimum temperature: 23.2 °C

Event center: -7.5°S 290.0°E

Area affected: 256431 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-03_to_2025-Dec-11_290.0_-7.5

Cold spell occuring from November 29 2025 to December 07 2025 at 3.5°N 298.5°E

Download data: JSON

Event type: Cold spell

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

  • Brazil
  • Venezuela, Bolivarian Republic of

Duration: 9 days

Time span: November 29 2025 to December 07 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -1.5 °C
  • Mean temperature: 23.9 °C
  • Minimum temperature anomaly: -2.7 °C
  • Minimum temperature: 21.0 °C

Event center: 3.5°N 298.5°E

Area affected: 92487 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-29_to_2025-Dec-07_298.5_3.5

Heat wave occuring from November 26 2025 to December 02 2025 at -18.5°S 312.5°E

Download data: JSON

Event type: Heat wave

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

  • Brazil

Duration: 7 days

Time span: November 26 2025 to December 02 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 2.7 °C
  • Mean temperature: 27.4 °C
  • Maximum temperature anomaly: 5.1 °C
  • Maximum temperature: 30.9 °C

Event center: -18.5°S 312.5°E

Area affected: 323199 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-26_to_2025-Dec-02_312.5_-18.5

Cold spell occuring from November 24 2025 to November 27 2025 at -22.0°S 313.5°E

Download data: JSON

Event type: Cold spell

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

  • Brazil

Duration: 4 days

Time span: November 24 2025 to November 27 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -2.9 °C
  • Mean temperature: 19.3 °C
  • Minimum temperature anomaly: -3.9 °C
  • Minimum temperature: 16.9 °C

Event center: -22.0°S 313.5°E

Area affected: 51420 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-24_to_2025-Nov-27_313.5_-22.0

Heat wave occuring from November 22 2025 to November 27 2025 at -6.5°S 315.0°E

Download data: JSON

Event type: Heat wave

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

  • Brazil

Duration: 6 days

Time span: November 22 2025 to November 27 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 2.2 °C
  • Mean temperature: 29.5 °C
  • Maximum temperature anomaly: 3.1 °C
  • Maximum temperature: 31.7 °C

Event center: -6.5°S 315.0°E

Area affected: 67607 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-22_to_2025-Nov-27_315.0_-6.5

Heat wave occuring from November 19 2025 to November 24 2025 at -10.5°S 298.0°E

Download data: JSON

Event type: Heat wave

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

  • Brazil

Duration: 6 days

Time span: November 19 2025 to November 24 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.6 °C
  • Mean temperature: 27.2 °C
  • Maximum temperature anomaly: 2.2 °C
  • Maximum temperature: 27.9 °C

Event center: -10.5°S 298.0°E

Area affected: 57829 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-19_to_2025-Nov-24_298.0_-10.5