Category: Extremes affecting Algeria

Heat wave occuring from October 12 2025 to October 15 2025 at 34.0°N 355.5°E

Download data: JSON

Event type: Heat wave

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

  • Algeria
  • Morocco

Duration: 4 days

Time span: October 12 2025 to October 15 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 3.9 °C
  • Mean temperature: 20.1 °C
  • Maximum temperature anomaly: 5.6 °C
  • Maximum temperature: 23.9 °C

Event center: 34.0°N 355.5°E

Area affected: 67280 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-12_to_2025-Oct-15_355.5_34.0

Heat wave occuring from October 11 2025 to October 14 2025 at 37.5°N 3.5°E

Download data: JSON

Event type: Heat wave

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

  • Algeria

Duration: 4 days

Time span: October 11 2025 to October 14 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 2.4 °C
  • Mean temperature: 23.7 °C
  • Maximum temperature anomaly: 5.5 °C
  • Maximum temperature: 24.8 °C

Event center: 37.5°N 3.5°E

Area affected: 121964 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-11_to_2025-Oct-14_3.5_37.5

Heat wave occuring from September 22 2025 to October 08 2025 at 21.0°N 2.5°E

Download data: JSON

Event type: Heat wave

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

  • Algeria
  • Mali
  • Mauritania
  • Niger

Duration: 17 days

Time span: September 22 2025 to October 08 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 2.5 °C
  • Mean temperature: 33.3 °C
  • Maximum temperature anomaly: 4.9 °C
  • Maximum temperature: 37.5 °C

Event center: 21.0°N 2.5°E

Area affected: 1172231 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-22_to_2025-Oct-08_2.5_21.0

Cold spell occuring from September 04 2025 to September 06 2025 at 21.0°N 1.5°E

Download data: JSON

Event type: Cold spell

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

  • Algeria
  • Mali

Duration: 3 days

Time span: September 04 2025 to September 06 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -3.1 °C
  • Mean temperature: 31.5 °C
  • Minimum temperature anomaly: -5.9 °C
  • Minimum temperature: 28.0 °C

Event center: 21.0°N 1.5°E

Area affected: 181147 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-04_to_2025-Sep-06_1.5_21.0

Cold spell occuring from August 30 2025 to September 07 2025 at 17.0°N 9.0°E

Download data: JSON

Event type: Cold spell

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

  • Algeria
  • Burkina Faso
  • Mali
  • Niger

Duration: 9 days

Time span: August 30 2025 to September 07 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -3.1 °C
  • Mean temperature: 27.6 °C
  • Minimum temperature anomaly: -5.1 °C
  • Minimum temperature: 24.0 °C

Event center: 17.0°N 9.0°E

Area affected: 609453 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-Aug-30_to_2025-Sep-07_9.0_17.0

Heat wave occuring from August 24 2025 to August 28 2025 at 37.0°N 4.0°E

Download data: JSON

Event type: Heat wave

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

  • Algeria
  • Spain

Duration: 5 days

Time span: August 24 2025 to August 28 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 3.4 °C
  • Mean temperature: 29.8 °C
  • Maximum temperature anomaly: 7.3 °C
  • Maximum temperature: 35.3 °C

Event center: 37.0°N 4.0°E

Area affected: 114067 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-24_to_2025-Aug-28_4.0_37.0

Heat wave occuring from August 22 2025 to September 09 2025 at 27.0°N 7.5°E

Download data: JSON

Event type: Heat wave

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

  • Algeria
  • Chad
  • Egypt
  • Libya
  • Mali
  • Mauritania
  • Morocco
  • Sudan
  • Tunisia

Duration: 19 days

Time span: August 22 2025 to September 09 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 3.1 °C
  • Mean temperature: 34.3 °C
  • Maximum temperature anomaly: 7.8 °C
  • Maximum temperature: 40.9 °C

Event center: 27.0°N 7.5°E

Area affected: 3624846 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-22_to_2025-Sep-09_7.5_27.0

Heat wave occuring from August 05 2025 to August 12 2025 at 24.0°N 6.0°E

Download data: JSON

Event type: Heat wave

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

  • Algeria

Duration: 8 days

Time span: August 05 2025 to August 12 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 2.2 °C
  • Mean temperature: 34.9 °C
  • Maximum temperature anomaly: 3.4 °C
  • Maximum temperature: 39.4 °C

Event center: 24.0°N 6.0°E

Area affected: 150313 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-05_to_2025-Aug-12_6.0_24.0

Cold spell occuring from July 26 2025 to August 01 2025 at 36.5°N 6.0°E

Download data: JSON

Event type: Cold spell

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

  • Algeria
  • Tunisia

Duration: 7 days

Time span: July 26 2025 to August 01 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -3.8 °C
  • Mean temperature: 23.4 °C
  • Minimum temperature anomaly: -5.6 °C
  • Minimum temperature: 21.4 °C

Event center: 36.5°N 6.0°E

Area affected: 59761 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-Jul-26_to_2025-Aug-01_6.0_36.5

Heat wave occuring from July 06 2025 to July 13 2025 at 25.0°N 11.0°E

Download data: JSON

Event type: Heat wave

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

  • Algeria
  • Chad
  • Libya
  • Mali
  • Niger

Duration: 8 days

Time span: July 06 2025 to July 13 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 2.8 °C
  • Mean temperature: 36.0 °C
  • Maximum temperature anomaly: 4.8 °C
  • Maximum temperature: 41.0 °C

Event center: 25.0°N 11.0°E

Area affected: 1154249 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-Jul-06_to_2025-Jul-13_11.0_25.0