Author: WEXA

Heat wave occuring from October 25 2025 to November 04 2025 at -13.5°S 31.5°E

Download data: JSON

Event type: Heat wave

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

  • Malawi
  • Mozambique
  • Zambia
  • Zimbabwe

Duration: 11 days

Time span: October 25 2025 to November 04 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 2.7 °C
  • Mean temperature: 29.0 °C
  • Maximum temperature anomaly: 6.0 °C
  • Maximum temperature: 35.8 °C

Event center: -13.5°S 31.5°E

Area affected: 733015 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-25_to_2025-Nov-04_31.5_-13.5

Cold spell occuring from October 25 2025 to October 28 2025 at -19.5°S 13.5°E

Download data: JSON

Event type: Cold spell

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

  • Namibia

Duration: 4 days

Time span: October 25 2025 to October 28 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -4.6 °C
  • Mean temperature: 16.6 °C
  • Minimum temperature anomaly: -7.2 °C
  • Minimum temperature: 13.2 °C

Event center: -19.5°S 13.5°E

Area affected: 66669 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-25_to_2025-Oct-28_13.5_-19.5

Heat wave occuring from October 25 2025 to October 30 2025 at -39.5°S 277.5°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 25 2025 to October 30 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.8 °C
  • Mean temperature: 13.1 °C
  • Maximum temperature anomaly: 2.7 °C
  • Maximum temperature: 16.0 °C

Event center: -39.5°S 277.5°E

Area affected: 575384 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-25_to_2025-Oct-30_277.5_-39.5

Heat wave occuring from October 24 2025 to November 02 2025 at 46.5°N 54.0°E

Download data: JSON

Event type: Heat wave

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

  • Kazakhstan
  • Russian Federation

Duration: 10 days

Time span: October 24 2025 to November 02 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 6.8 °C
  • Mean temperature: 6.2 °C
  • Maximum temperature anomaly: 10.9 °C
  • Maximum temperature: 15.5 °C

Event center: 46.5°N 54.0°E

Area affected: 1745182 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-24_to_2025-Nov-02_54.0_46.5

Heat wave occuring from October 24 2025 to November 02 2025 at -56.5°S 313.0°E

Download data: JSON

Event type: Heat wave

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

  • Antarctica
  • Argentina
  • Chile

Duration: 10 days

Time span: October 24 2025 to November 02 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 3.8 °C
  • Mean temperature: 1.8 °C
  • Maximum temperature anomaly: 14.6 °C
  • Maximum temperature: 15.8 °C

Event center: -56.5°S 313.0°E

Area affected: 5229526 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-24_to_2025-Nov-02_313.0_-56.5

Cold spell occuring from October 23 2025 to October 30 2025 at 65.5°N 342.0°E

Download data: JSON

Event type: Cold spell

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

  • Iceland

Duration: 8 days

Time span: October 23 2025 to October 30 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -3.9 °C
  • Mean temperature: 0.6 °C
  • Minimum temperature anomaly: -11.2 °C
  • Minimum temperature: -12.7 °C

Event center: 65.5°N 342.0°E

Area affected: 350884 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-23_to_2025-Oct-30_342.0_65.5

Cold spell occuring from October 23 2025 to October 25 2025 at -22.5°S 114.5°E

Download data: JSON

Event type: Cold spell

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

  • Australia

Duration: 3 days

Time span: October 23 2025 to October 25 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -3.6 °C
  • Mean temperature: 21.6 °C
  • Minimum temperature anomaly: -5.2 °C
  • Minimum temperature: 19.6 °C

Event center: -22.5°S 114.5°E

Area affected: 87843 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-23_to_2025-Oct-25_114.5_-22.5

Heat wave occuring from October 23 2025 to October 26 2025 at 52.0°N 246.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada

Duration: 4 days

Time span: October 23 2025 to October 26 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 6.6 °C
  • Mean temperature: 8.5 °C
  • Maximum temperature anomaly: 10.4 °C
  • Maximum temperature: 13.9 °C

Event center: 52.0°N 246.0°E

Area affected: 74452 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-26_246.0_52.0

Heat wave occuring from October 23 2025 to November 03 2025 at -77.0°S 197.5°E

Download data: JSON

Event type: Heat wave

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

  • Antarctica

Duration: 12 days

Time span: October 23 2025 to November 03 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 6.9 °C
  • Mean temperature: -6.3 °C
  • Maximum temperature anomaly: 12.6 °C
  • Maximum temperature: -0.4 °C

Event center: -77.0°S 197.5°E

Area affected: 1132124 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-Nov-03_197.5_-77.0

Heat wave occuring from October 23 2025 to October 31 2025 at 82.0°N 284.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • Greenland

Duration: 9 days

Time span: October 23 2025 to October 31 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 8.0 °C
  • Mean temperature: -14.2 °C
  • Maximum temperature anomaly: 13.8 °C
  • Maximum temperature: -8.0 °C

Event center: 82.0°N 284.5°E

Area affected: 80924 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-31_284.5_82.0