Heat wave occuring from September 06 2025 to September 10 2025 at 1.0°N 43.5°E

Download data: JSON

Event type: Heat wave

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

  • Somalia

Duration: 5 days

Time span: September 06 2025 to September 10 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.0 °C
  • Mean temperature: 27.5 °C
  • Maximum temperature anomaly: 1.5 °C
  • Maximum temperature: 29.1 °C

Event center: 1.0°N 43.5°E

Area affected: 123551 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-Sep-06_to_2025-Sep-10_43.5_1.0

Heat wave occuring from August 20 2025 to October 12 2025 at 22.5°N 41.5°E

Download data: JSON

Event type: Heat wave

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

  • Central African Republic
  • Chad
  • Djibouti
  • Egypt
  • Eritrea
  • Ethiopia
  • Kenya
  • Oman
  • Saudi Arabia
  • Somalia
  • South Sudan
  • Sudan
  • United Arab Emirates
  • Yemen

Duration: 54 days

Time span: August 20 2025 to October 12 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 2.2 °C
  • Mean temperature: 31.4 °C
  • Maximum temperature anomaly: 5.5 °C
  • Maximum temperature: 39.2 °C

Event center: 22.5°N 41.5°E

Area affected: 4543278 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-Aug-20_to_2025-Oct-12_41.5_22.5

Heat wave occuring from August 18 2025 to September 29 2025 at 0.5°N 37.0°E

Download data: JSON

Event type: Heat wave

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

  • Djibouti
  • Eritrea
  • Ethiopia
  • Kenya
  • Oman
  • Saudi Arabia
  • Somalia
  • United Arab Emirates
  • Yemen

Duration: 43 days

Time span: August 18 2025 to September 29 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.9 °C
  • Mean temperature: 31.8 °C
  • Maximum temperature anomaly: 6.2 °C
  • Maximum temperature: 40.2 °C

Event center: 0.5°N 37.0°E

Area affected: 1989168 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-Aug-18_to_2025-Sep-29_37.0_0.5

Heat wave occuring from August 13 2025 to August 15 2025 at 5.0°N 45.0°E

Download data: JSON

Event type: Heat wave

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

  • Ethiopia
  • Somalia

Duration: 3 days

Time span: August 13 2025 to August 15 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.0 °C
  • Mean temperature: 28.4 °C
  • Maximum temperature anomaly: 1.5 °C
  • Maximum temperature: 30.1 °C

Event center: 5.0°N 45.0°E

Area affected: 95351 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-Aug-13_to_2025-Aug-15_45.0_5.0

Heat wave occuring from August 12 2025 to August 21 2025 at -0.5°S 42.5°E

Download data: JSON

Event type: Heat wave

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

  • Somalia

Duration: 10 days

Time span: August 12 2025 to August 21 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 0.8 °C
  • Mean temperature: 26.1 °C
  • Maximum temperature anomaly: 1.8 °C
  • Maximum temperature: 28.8 °C

Event center: -0.5°S 42.5°E

Area affected: 166832 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-Aug-12_to_2025-Aug-21_42.5_-0.5

Heat wave occuring from August 09 2025 to August 18 2025 at 13.5°N 48.5°E

Download data: JSON

Event type: Heat wave

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

  • Somalia
  • Yemen

Duration: 10 days

Time span: August 09 2025 to August 18 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.3 °C
  • Mean temperature: 31.7 °C
  • Maximum temperature anomaly: 3.2 °C
  • Maximum temperature: 34.8 °C

Event center: 13.5°N 48.5°E

Area affected: 99491 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-Aug-09_to_2025-Aug-18_48.5_13.5

Heat wave occuring from March 30 2025 to April 08 2025 at 4.5°N 47.5°E

Download data: JSON

Event type: Heat wave

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

  • Somalia

Duration: 10 days

Time span: March 30 2025 to April 08 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.0 °C
  • Mean temperature: 29.3 °C
  • Maximum temperature anomaly: 1.5 °C
  • Maximum temperature: 30.8 °C

Event center: 4.5°N 47.5°E

Area affected: 67744 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-Mar-30_to_2025-Apr-08_47.5_4.5

Heat wave occuring from February 07 2025 to February 20 2025 at 12.0°N 40.0°E

Download data: JSON

Event type: Heat wave

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

  • Djibouti
  • Eritrea
  • Ethiopia
  • Somalia

Duration: 14 days

Time span: February 07 2025 to February 20 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 2.2 °C
  • Mean temperature: 27.1 °C
  • Maximum temperature anomaly: 4.7 °C
  • Maximum temperature: 33.8 °C

Event center: 12.0°N 40.0°E

Area affected: 415172 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-Feb-07_to_2025-Feb-20_40.0_12.0

Heat wave occuring from September 18 2024 to September 22 2024 at 3.0°N 42.0°E

Download data: JSON

Event type: Heat wave

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

  • Kenya
  • Somalia

Duration: 5 days

Time span: September 18 2024 to September 22 2024

Statistics over entire affected area:

  • Mean temperature anomaly: 1.1 °C
  • Mean temperature: 28.6 °C
  • Maximum temperature anomaly: 1.5 °C
  • Maximum temperature: 30.9 °C

Event center: 3.0°N 42.0°E

Area affected: 114193 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_2024-Sep-18_to_2024-Sep-22_42.0_3.0

Heat wave occuring from March 20 2023 to April 04 2023 at 5.5°N 47.5°E

Download data: JSON

Event type: Heat wave

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

  • Ethiopia
  • Somalia

Duration: 16 days

Time span: March 20 2023 to April 04 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 1.1 °C
  • Mean temperature: 29.0 °C
  • Maximum temperature anomaly: 1.9 °C
  • Maximum temperature: 31.4 °C

Event center: 5.5°N 47.5°E

Area affected: 319749 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_2023-Mar-20_to_2023-Apr-04_47.5_5.5