Author: WEXA

Heat wave occuring from October 23 2025 to October 30 2025 at 36.0°N 51.5°E

Download data: JSON

Event type: Heat wave

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

  • Iran, Islamic Republic of

Duration: 8 days

Time span: October 23 2025 to October 30 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 3.8 °C
  • Mean temperature: 17.3 °C
  • Maximum temperature anomaly: 6.4 °C
  • Maximum temperature: 23.1 °C

Event center: 36.0°N 51.5°E

Area affected: 60323 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-23_to_2025-Oct-30_51.5_36.0

Heat wave occuring from October 22 2025 to October 29 2025 at -3.5°S 318.0°E

Download data: JSON

Event type: Heat wave

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

  • Brazil

Duration: 8 days

Time span: October 22 2025 to October 29 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.2 °C
  • Mean temperature: 30.2 °C
  • Maximum temperature anomaly: 2.0 °C
  • Maximum temperature: 33.0 °C

Event center: -3.5°S 318.0°E

Area affected: 98742 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-22_to_2025-Oct-29_318.0_-3.5

Heat wave occuring from October 22 2025 to November 05 2025 at -9.5°S 312.5°E

Download data: JSON

Event type: Heat wave

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

  • Brazil

Duration: 15 days

Time span: October 22 2025 to November 05 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 2.5 °C
  • Mean temperature: 29.0 °C
  • Maximum temperature anomaly: 6.6 °C
  • Maximum temperature: 34.0 °C

Event center: -9.5°S 312.5°E

Area affected: 1700729 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-22_to_2025-Nov-05_312.5_-9.5

Heat wave occuring from October 22 2025 to October 25 2025 at 47.0°N 65.0°E

Download data: JSON

Event type: Heat wave

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

  • Kazakhstan

Duration: 4 days

Time span: October 22 2025 to October 25 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 6.9 °C
  • Mean temperature: 12.4 °C
  • Maximum temperature anomaly: 8.5 °C
  • Maximum temperature: 15.2 °C

Event center: 47.0°N 65.0°E

Area affected: 81911 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-22_to_2025-Oct-25_65.0_47.0

Heat wave occuring from October 21 2025 to November 02 2025 at -8.0°S 282.0°E

Download data: JSON

Event type: Heat wave

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

  • Ecuador
  • Peru

Duration: 13 days

Time span: October 21 2025 to November 02 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.4 °C
  • Mean temperature: 17.3 °C
  • Maximum temperature anomaly: 2.8 °C
  • Maximum temperature: 27.3 °C

Event center: -8.0°S 282.0°E

Area affected: 123098 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-21_to_2025-Nov-02_282.0_-8.0

Heat wave occuring from October 21 2025 to October 30 2025 at 10.5°N 343.5°E

Download data: JSON

Event type: Heat wave

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

  • Guinea-Bissau

Duration: 10 days

Time span: October 21 2025 to October 30 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.0 °C
  • Mean temperature: 28.2 °C
  • Maximum temperature anomaly: 1.6 °C
  • Maximum temperature: 29.0 °C

Event center: 10.5°N 343.5°E

Area affected: 225363 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-21_to_2025-Oct-30_343.5_10.5

Heat wave occuring from October 21 2025 to October 27 2025 at 62.0°N 233.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada

Duration: 7 days

Time span: October 21 2025 to October 27 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 6.2 °C
  • Mean temperature: 1.1 °C
  • Maximum temperature anomaly: 8.9 °C
  • Maximum temperature: 5.4 °C

Event center: 62.0°N 233.5°E

Area affected: 89165 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-21_to_2025-Oct-27_233.5_62.0

Heat wave occuring from October 21 2025 to October 31 2025 at -13.0°S 287.5°E

Download data: JSON

Event type: Heat wave

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

  • Peru

Duration: 11 days

Time span: October 21 2025 to October 31 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.7 °C
  • Mean temperature: 15.3 °C
  • Maximum temperature anomaly: 3.3 °C
  • Maximum temperature: 29.2 °C

Event center: -13.0°S 287.5°E

Area affected: 223487 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-21_to_2025-Oct-31_287.5_-13.0

Heat wave occuring from October 21 2025 to October 24 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: 4 days

Time span: October 21 2025 to October 24 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 6.6 °C
  • Mean temperature: 28.7 °C
  • Maximum temperature anomaly: 8.7 °C
  • Maximum temperature: 33.1 °C

Event center: -30.5°S 296.5°E

Area affected: 80361 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-21_to_2025-Oct-24_296.5_-30.5

Heat wave occuring from October 21 2025 to October 27 2025 at 64.0°N 20.0°E

Download data: JSON

Event type: Heat wave

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

  • Norway
  • Sweden

Duration: 7 days

Time span: October 21 2025 to October 27 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 5.9 °C
  • Mean temperature: 6.8 °C
  • Maximum temperature anomaly: 8.8 °C
  • Maximum temperature: 10.4 °C

Event center: 64.0°N 20.0°E

Area affected: 315305 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-21_to_2025-Oct-27_20.0_64.0