Category: Extremes affecting Botswana

Cold spell occuring from January 18 2026 to January 26 2026 at -21.5°S 25.5°E

Download data: JSON

Event type: Cold spell

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

  • Angola
  • Botswana
  • Eswatini
  • Mozambique
  • Namibia
  • South Africa
  • Zambia
  • Zimbabwe

Duration: 9 days

Time span: January 18 2026 to January 26 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -4.5 °C
  • Mean temperature: 20.5 °C
  • Minimum temperature anomaly: -9.0 °C
  • Minimum temperature: 14.5 °C

Event center: -21.5°S 25.5°E

Area affected: 879109 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-18_to_2026-Jan-26_25.5_-21.5

Cold spell occuring from December 11 2025 to December 24 2025 at -23.0°S 22.5°E

Download data: JSON

Event type: Cold spell

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

  • Angola
  • Botswana
  • Namibia
  • South Africa
  • Zambia
  • Zimbabwe

Duration: 14 days

Time span: December 11 2025 to December 24 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -4.1 °C
  • Mean temperature: 22.1 °C
  • Minimum temperature anomaly: -6.5 °C
  • Minimum temperature: 19.3 °C

Event center: -23.0°S 22.5°E

Area affected: 889785 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-11_to_2025-Dec-24_22.5_-23.0

Cold spell occuring from November 15 2025 to November 18 2025 at -23.5°S 27.0°E

Download data: JSON

Event type: Cold spell

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

  • Botswana
  • Mozambique
  • South Africa
  • Zimbabwe

Duration: 4 days

Time span: November 15 2025 to November 18 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -5.8 °C
  • Mean temperature: 18.6 °C
  • Minimum temperature anomaly: -9.6 °C
  • Minimum temperature: 13.1 °C

Event center: -23.5°S 27.0°E

Area affected: 289929 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-15_to_2025-Nov-18_27.0_-23.5

Cold spell occuring from November 03 2025 to November 25 2025 at -12.5°S 32.0°E

Download data: JSON

Event type: Cold spell

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

  • Angola
  • Botswana
  • Congo, The Democratic Republic of the
  • Madagascar
  • Malawi
  • Mozambique
  • Namibia
  • Tanzania, United Republic of
  • Zambia
  • Zimbabwe

Duration: 23 days

Time span: November 03 2025 to November 25 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -3.2 °C
  • Mean temperature: 21.9 °C
  • Minimum temperature anomaly: -9.2 °C
  • Minimum temperature: 14.8 °C

Event center: -12.5°S 32.0°E

Area affected: 4313215 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-03_to_2025-Nov-25_32.0_-12.5

Cold spell occuring from October 20 2025 to October 24 2025 at -19.0°S 27.0°E

Download data: JSON

Event type: Cold spell

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

  • Botswana
  • Mozambique
  • South Africa
  • Zambia
  • Zimbabwe

Duration: 5 days

Time span: October 20 2025 to October 24 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -5.2 °C
  • Mean temperature: 19.9 °C
  • Minimum temperature anomaly: -8.0 °C
  • Minimum temperature: 12.9 °C

Event center: -19.0°S 27.0°E

Area affected: 484379 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-20_to_2025-Oct-24_27.0_-19.0

Heat wave occuring from October 12 2025 to October 19 2025 at -19.5°S 26.0°E

Download data: JSON

Event type: Heat wave

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

  • Botswana
  • Namibia
  • South Africa
  • Zambia
  • Zimbabwe

Duration: 8 days

Time span: October 12 2025 to October 19 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 3.6 °C
  • Mean temperature: 29.8 °C
  • Maximum temperature anomaly: 5.3 °C
  • Maximum temperature: 32.7 °C

Event center: -19.5°S 26.0°E

Area affected: 463783 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-19_26.0_-19.5

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 September 18 2025 to September 22 2025 at -22.5°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: 5 days

Time span: September 18 2025 to September 22 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 4.9 °C
  • Mean temperature: 26.4 °C
  • Maximum temperature anomaly: 7.4 °C
  • Maximum temperature: 28.5 °C

Event center: -22.5°S 19.0°E

Area affected: 167647 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-18_to_2025-Sep-22_19.0_-22.5

Heat wave occuring from September 08 2025 to September 10 2025 at -18.5°S 22.5°E

Download data: JSON

Event type: Heat wave

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

  • Angola
  • Botswana
  • Namibia

Duration: 3 days

Time span: September 08 2025 to September 10 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 3.5 °C
  • Mean temperature: 27.0 °C
  • Maximum temperature anomaly: 4.7 °C
  • Maximum temperature: 28.3 °C

Event center: -18.5°S 22.5°E

Area affected: 61287 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-08_to_2025-Sep-10_22.5_-18.5

Heat wave occuring from August 25 2025 to September 06 2025 at -25.0°S 30.0°E

Download data: JSON

Event type: Heat wave

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

  • Angola
  • Botswana
  • Eswatini
  • Lesotho
  • Namibia
  • South Africa

Duration: 13 days

Time span: August 25 2025 to September 06 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 3.8 °C
  • Mean temperature: 20.3 °C
  • Maximum temperature anomaly: 12.9 °C
  • Maximum temperature: 31.1 °C

Event center: -25.0°S 30.0°E

Area affected: 1634868 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-25_to_2025-Sep-06_30.0_-25.0