Category: Extremes affecting Guinea

Cold spell occuring from January 19 2026 to January 23 2026 at 13.5°N 355.5°E

Download data: JSON

Event type: Cold spell

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

  • Guinea
  • Mali

Duration: 5 days

Time span: January 19 2026 to January 23 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -3.9 °C
  • Mean temperature: 20.1 °C
  • Minimum temperature anomaly: -5.4 °C
  • Minimum temperature: 16.4 °C

Event center: 13.5°N 355.5°E

Area affected: 125750 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_2026-Jan-19_to_2026-Jan-23_355.5_13.5

Cold spell occuring from December 10 2025 to January 01 2026 at 15.0°N 342.5°E

Download data: JSON

Event type: Cold spell

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

  • Gambia
  • Guinea
  • Guinea-Bissau
  • Mali
  • Mauritania
  • Senegal

Duration: 23 days

Time span: December 10 2025 to January 01 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -2.6 °C
  • Mean temperature: 21.5 °C
  • Minimum temperature anomaly: -6.0 °C
  • Minimum temperature: 12.8 °C

Event center: 15.0°N 342.5°E

Area affected: 1618347 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-Dec-10_to_2026-Jan-01_342.5_15.0

Cold spell occuring from November 25 2025 to November 30 2025 at 11.5°N 345.0°E

Download data: JSON

Event type: Cold spell

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

  • Gambia
  • Guinea
  • Guinea-Bissau
  • Mali
  • Mauritania
  • Senegal

Duration: 6 days

Time span: November 25 2025 to November 30 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -2.2 °C
  • Mean temperature: 25.4 °C
  • Minimum temperature anomaly: -4.2 °C
  • Minimum temperature: 23.7 °C

Event center: 11.5°N 345.0°E

Area affected: 105065 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-Nov-25_to_2025-Nov-30_345.0_11.5

Heat wave occuring from November 01 2025 to November 06 2025 at 6.0°N 350.5°E

Download data: JSON

Event type: Heat wave

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

  • Côte d’Ivoire
  • Guinea
  • Liberia
  • Sierra Leone

Duration: 6 days

Time span: November 01 2025 to November 06 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.0 °C
  • Mean temperature: 25.9 °C
  • Maximum temperature anomaly: 1.3 °C
  • Maximum temperature: 26.5 °C

Event center: 6.0°N 350.5°E

Area affected: 64422 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-Nov-01_to_2025-Nov-06_350.5_6.0

Heat wave occuring from June 01 2025 to June 10 2025 at 10.0°N 343.5°E

Download data: JSON

Event type: Heat wave

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

  • Cabo Verde
  • Côte d’Ivoire
  • Guinea
  • Guinea-Bissau
  • Liberia
  • Sierra Leone

Duration: 10 days

Time span: June 01 2025 to June 10 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.1 °C
  • Mean temperature: 26.5 °C
  • Maximum temperature anomaly: 2.4 °C
  • Maximum temperature: 29.3 °C

Event center: 10.0°N 343.5°E

Area affected: 626604 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-Jun-01_to_2025-Jun-10_343.5_10.0

Heat wave occuring from June 01 2025 to June 04 2025 at 6.5°N 349.5°E

Download data: JSON

Event type: Heat wave

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

  • Guinea
  • Liberia
  • Sierra Leone

Duration: 4 days

Time span: June 01 2025 to June 04 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.3 °C
  • Mean temperature: 26.3 °C
  • Maximum temperature anomaly: 2.1 °C
  • Maximum temperature: 27.0 °C

Event center: 6.5°N 349.5°E

Area affected: 52130 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-Jun-01_to_2025-Jun-04_349.5_6.5

Heat wave occuring from May 25 2025 to May 29 2025 at 10.0°N 350.5°E

Download data: JSON

Event type: Heat wave

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

  • Côte d’Ivoire
  • Guinea
  • Liberia
  • Sierra Leone

Duration: 5 days

Time span: May 25 2025 to May 29 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.4 °C
  • Mean temperature: 27.0 °C
  • Maximum temperature anomaly: 3.4 °C
  • Maximum temperature: 32.0 °C

Event center: 10.0°N 350.5°E

Area affected: 183745 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-May-25_to_2025-May-29_350.5_10.0

Heat wave occuring from May 06 2025 to May 16 2025 at 8.0°N 351.0°E

Download data: JSON

Event type: Heat wave

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

  • Côte d’Ivoire
  • Ghana
  • Guinea
  • Liberia
  • Sierra Leone

Duration: 11 days

Time span: May 06 2025 to May 16 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.2 °C
  • Mean temperature: 27.7 °C
  • Maximum temperature anomaly: 2.4 °C
  • Maximum temperature: 29.1 °C

Event center: 8.0°N 351.0°E

Area affected: 383810 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-May-06_to_2025-May-16_351.0_8.0

Cold spell occuring from April 28 2025 to May 07 2025 at 12.0°N 349.0°E

Download data: JSON

Event type: Cold spell

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

  • Guinea
  • Mali
  • Senegal

Duration: 10 days

Time span: April 28 2025 to May 07 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -3.3 °C
  • Mean temperature: 27.7 °C
  • Minimum temperature anomaly: -6.1 °C
  • Minimum temperature: 22.0 °C

Event center: 12.0°N 349.0°E

Area affected: 133156 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-Apr-28_to_2025-May-07_349.0_12.0

Heat wave occuring from March 28 2025 to April 15 2025 at 7.5°N 348.0°E

Download data: JSON

Event type: Heat wave

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

  • Côte d’Ivoire
  • Ghana
  • Guinea
  • Liberia
  • Mali
  • Sierra Leone

Duration: 19 days

Time span: March 28 2025 to April 15 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.5 °C
  • Mean temperature: 29.0 °C
  • Maximum temperature anomaly: 3.0 °C
  • Maximum temperature: 34.4 °C

Event center: 7.5°N 348.0°E

Area affected: 511511 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-28_to_2025-Apr-15_348.0_7.5