Author: WEXA

Heat wave occuring from October 31 2025 to November 05 2025 at -36.5°S 286.0°E

Download data: JSON

Event type: Heat wave

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

  • Chile

Duration: 6 days

Time span: October 31 2025 to November 05 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.1 °C
  • Mean temperature: 13.9 °C
  • Maximum temperature anomaly: 1.5 °C
  • Maximum temperature: 14.9 °C

Event center: -36.5°S 286.0°E

Area affected: 59617 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-31_to_2025-Nov-05_286.0_-36.5

Heat wave occuring from October 31 2025 to November 05 2025 at 2.0°N 307.5°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: October 31 2025 to November 05 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.7 °C
  • Mean temperature: 29.3 °C
  • Maximum temperature anomaly: 2.5 °C
  • Maximum temperature: 30.5 °C

Event center: 2.0°N 307.5°E

Area affected: 95802 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-31_to_2025-Nov-05_307.5_2.0

Heat wave occuring from October 31 2025 to November 06 2025 at 39.0°N 248.5°E

Download data: JSON

Event type: Heat wave

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

  • United States

Duration: 7 days

Time span: October 31 2025 to November 06 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 6.2 °C
  • Mean temperature: 11.9 °C
  • Maximum temperature anomaly: 9.7 °C
  • Maximum temperature: 22.1 °C

Event center: 39.0°N 248.5°E

Area affected: 313611 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-31_to_2025-Nov-06_248.5_39.0

Heat wave occuring from October 31 2025 to November 09 2025 at 32.0°N 250.5°E

Download data: JSON

Event type: Heat wave

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

  • Mexico
  • United States

Duration: 10 days

Time span: October 31 2025 to November 09 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 5.0 °C
  • Mean temperature: 13.5 °C
  • Maximum temperature anomaly: 7.5 °C
  • Maximum temperature: 19.5 °C

Event center: 32.0°N 250.5°E

Area affected: 124967 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-31_to_2025-Nov-09_250.5_32.0

Heat wave occuring from October 30 2025 to November 02 2025 at 46.5°N 16.0°E

Download data: JSON

Event type: Heat wave

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

  • Austria
  • Bosnia and Herzegovina
  • Croatia
  • Hungary
  • Italy
  • Slovenia

Duration: 4 days

Time span: October 30 2025 to November 02 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 5.7 °C
  • Mean temperature: 13.8 °C
  • Maximum temperature anomaly: 7.9 °C
  • Maximum temperature: 17.7 °C

Event center: 46.5°N 16.0°E

Area affected: 85554 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-30_to_2025-Nov-02_16.0_46.5

Heat wave occuring from October 30 2025 to November 14 2025 at -59.0°S 250.0°E

Download data: JSON

Event type: Heat wave

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

  • Antarctica

Duration: 16 days

Time span: October 30 2025 to November 14 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 2.6 °C
  • Mean temperature: 5.6 °C
  • Maximum temperature anomaly: 7.3 °C
  • Maximum temperature: 18.4 °C

Event center: -59.0°S 250.0°E

Area affected: 8088936 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-30_to_2025-Nov-14_250.0_-59.0

Cold spell occuring from October 29 2025 to October 31 2025 at -22.5°S 304.0°E

Download data: JSON

Event type: Cold spell

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

  • Brazil
  • Paraguay

Duration: 3 days

Time span: October 29 2025 to October 31 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -6.5 °C
  • Mean temperature: 19.3 °C
  • Minimum temperature anomaly: -9.1 °C
  • Minimum temperature: 16.5 °C

Event center: -22.5°S 304.0°E

Area affected: 54517 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-29_to_2025-Oct-31_304.0_-22.5

Cold spell occuring from October 29 2025 to November 06 2025 at -64.5°S 3.5°E

Download data: JSON

Event type: Cold spell

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

  • Antarctica

Duration: 9 days

Time span: October 29 2025 to November 06 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -4.8 °C
  • Mean temperature: -10.0 °C
  • Minimum temperature anomaly: -6.2 °C
  • Minimum temperature: -12.6 °C

Event center: -64.5°S 3.5°E

Area affected: 627475 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-29_to_2025-Nov-06_3.5_-64.5

Heat wave occuring from October 28 2025 to November 01 2025 at 33.0°N 50.0°E

Download data: JSON

Event type: Heat wave

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

  • Iran, Islamic Republic of

Duration: 5 days

Time span: October 28 2025 to November 01 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 2.8 °C
  • Mean temperature: 12.7 °C
  • Maximum temperature anomaly: 4.1 °C
  • Maximum temperature: 15.3 °C

Event center: 33.0°N 50.0°E

Area affected: 57399 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-28_to_2025-Nov-01_50.0_33.0

Heat wave occuring from October 27 2025 to October 31 2025 at -1.5°S 148.0°E

Download data: JSON

Event type: Heat wave

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

  • Papua New Guinea

Duration: 5 days

Time span: October 27 2025 to October 31 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.3 °C
  • Mean temperature: 28.7 °C
  • Maximum temperature anomaly: 1.9 °C
  • Maximum temperature: 29.2 °C

Event center: -1.5°S 148.0°E

Area affected: 234834 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-27_to_2025-Oct-31_148.0_-1.5