Author: WEXA

Cold spell occuring from October 01 2025 to October 07 2025 at 4.0°N 35.5°E

Download data: JSON

Event type: Cold spell

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

  • Kenya
  • South Sudan
  • Uganda

Duration: 7 days

Time span: October 01 2025 to October 07 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -2.7 °C
  • Mean temperature: 26.1 °C
  • Minimum temperature anomaly: -4.7 °C
  • Minimum temperature: 19.0 °C

Event center: 4.0°N 35.5°E

Area affected: 61687 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-01_to_2025-Oct-07_35.5_4.0

Cold spell occuring from October 01 2025 to October 05 2025 at -32.0°S 253.0°E

Download data: JSON

Event type: Cold spell

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

  • Chile

Duration: 5 days

Time span: October 01 2025 to October 05 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -2.1 °C
  • Mean temperature: 16.1 °C
  • Minimum temperature anomaly: -3.4 °C
  • Minimum temperature: 12.6 °C

Event center: -32.0°S 253.0°E

Area affected: 519401 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-01_to_2025-Oct-05_253.0_-32.0

Cold spell occuring from October 01 2025 to October 06 2025 at -24.0°S 46.5°E

Download data: JSON

Event type: Cold spell

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

  • Madagascar

Duration: 6 days

Time span: October 01 2025 to October 06 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -2.5 °C
  • Mean temperature: 21.5 °C
  • Minimum temperature anomaly: -7.7 °C
  • Minimum temperature: 16.1 °C

Event center: -24.0°S 46.5°E

Area affected: 93941 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-01_to_2025-Oct-06_46.5_-24.0

Heat wave occuring from October 01 2025 to October 04 2025 at -26.5°S 111.5°E

Download data: JSON

Event type: Heat wave

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

  • Australia

Duration: 4 days

Time span: October 01 2025 to October 04 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.6 °C
  • Mean temperature: 20.5 °C
  • Maximum temperature anomaly: 2.4 °C
  • Maximum temperature: 21.8 °C

Event center: -26.5°S 111.5°E

Area affected: 130082 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-01_to_2025-Oct-04_111.5_-26.5

Heat wave occuring from October 01 2025 to October 05 2025 at -0.5°S 108.5°E

Download data: JSON

Event type: Heat wave

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

  • Indonesia

Duration: 5 days

Time span: October 01 2025 to October 05 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.1 °C
  • Mean temperature: 28.3 °C
  • Maximum temperature anomaly: 1.7 °C
  • Maximum temperature: 29.0 °C

Event center: -0.5°S 108.5°E

Area affected: 86542 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-01_to_2025-Oct-05_108.5_-0.5

Heat wave occuring from October 01 2025 to October 07 2025 at -22.0°S 19.0°E

Download data: JSON

Event type: Heat wave

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

  • Botswana
  • Namibia

Duration: 7 days

Time span: October 01 2025 to October 07 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 3.9 °C
  • Mean temperature: 27.4 °C
  • Maximum temperature anomaly: 6.3 °C
  • Maximum temperature: 30.1 °C

Event center: -22.0°S 19.0°E

Area affected: 228676 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-01_to_2025-Oct-07_19.0_-22.0

Heat wave occuring from October 01 2025 to October 03 2025 at 79.5°N 354.5°E

Download data: JSON

Event type: Heat wave

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

  • Greenland

Duration: 3 days

Time span: October 01 2025 to October 03 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 7.1 °C
  • Mean temperature: -0.9 °C
  • Maximum temperature anomaly: 9.4 °C
  • Maximum temperature: 1.8 °C

Event center: 79.5°N 354.5°E

Area affected: 65595 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-01_to_2025-Oct-03_354.5_79.5

Cold spell occuring from September 30 2025 to October 10 2025 at 63.0°N 142.0°E

Download data: JSON

Event type: Cold spell

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

  • Russian Federation

Duration: 11 days

Time span: September 30 2025 to October 10 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -8.4 °C
  • Mean temperature: -17.7 °C
  • Minimum temperature anomaly: -15.8 °C
  • Minimum temperature: -25.0 °C

Event center: 63.0°N 142.0°E

Area affected: 68385 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-Sep-30_to_2025-Oct-10_142.0_63.0

Cold spell occuring from September 30 2025 to October 03 2025 at 19.5°N 345.5°E

Download data: JSON

Event type: Cold spell

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

  • Mauritania

Duration: 4 days

Time span: September 30 2025 to October 03 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -4.4 °C
  • Mean temperature: 28.3 °C
  • Minimum temperature anomaly: -6.9 °C
  • Minimum temperature: 25.1 °C

Event center: 19.5°N 345.5°E

Area affected: 134399 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-Sep-30_to_2025-Oct-03_345.5_19.5

Cold spell occuring from September 30 2025 to November 04 2025 at 50.0°N 100.0°E

Download data: JSON

Event type: Cold spell

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

  • China
  • Hong Kong
  • Japan
  • Kazakhstan
  • Korea, Democratic People’s Republic of
  • Lao People’s Democratic Republic
  • Mongolia
  • Russian Federation
  • United States
  • Viet Nam

Duration: 36 days

Time span: September 30 2025 to November 04 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -5.8 °C
  • Mean temperature: -1.0 °C
  • Minimum temperature anomaly: -23.4 °C
  • Minimum temperature: -32.6 °C

Event center: 50.0°N 100.0°E

Area affected: 19274293 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-Sep-30_to_2025-Nov-04_100.0_50.0