Author: WEXA

Cold spell occuring from December 10 2025 to December 26 2025 at 1.0°N 268.5°E

Download data: JSON

Event type: Cold spell

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

  • Ecuador

Duration: 17 days

Time span: December 10 2025 to December 26 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -1.8 °C
  • Mean temperature: 21.8 °C
  • Minimum temperature anomaly: -3.2 °C
  • Minimum temperature: 19.2 °C

Event center: 1.0°N 268.5°E

Area affected: 352218 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_2025-Dec-26_268.5_1.0

Cold spell occuring from December 10 2025 to December 25 2025 at 7.5°N 29.5°E

Download data: JSON

Event type: Cold spell

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

  • Congo, The Democratic Republic of the
  • Ethiopia
  • South Sudan
  • Sudan
  • Uganda

Duration: 16 days

Time span: December 10 2025 to December 25 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -2.9 °C
  • Mean temperature: 25.5 °C
  • Minimum temperature anomaly: -5.1 °C
  • Minimum temperature: 21.6 °C

Event center: 7.5°N 29.5°E

Area affected: 499267 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_2025-Dec-25_29.5_7.5

Cold spell occuring from December 10 2025 to December 13 2025 at -15.0°S 40.5°E

Download data: JSON

Event type: Cold spell

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

  • Mozambique

Duration: 4 days

Time span: December 10 2025 to December 13 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -2.2 °C
  • Mean temperature: 23.5 °C
  • Minimum temperature anomaly: -3.2 °C
  • Minimum temperature: 21.3 °C

Event center: -15.0°S 40.5°E

Area affected: 71757 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_2025-Dec-13_40.5_-15.0

Heat wave occuring from December 10 2025 to December 16 2025 at -77.5°S 233.5°E

Download data: JSON

Event type: Heat wave

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

  • Antarctica

Duration: 7 days

Time span: December 10 2025 to December 16 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 5.1 °C
  • Mean temperature: -12.5 °C
  • Maximum temperature anomaly: 8.0 °C
  • Maximum temperature: -7.6 °C

Event center: -77.5°S 233.5°E

Area affected: 87911 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-Dec-10_to_2025-Dec-16_233.5_-77.5

Heat wave occuring from December 10 2025 to December 15 2025 at -5.0°S 22.0°E

Download data: JSON

Event type: Heat wave

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

  • Angola
  • Congo
  • Congo, The Democratic Republic of the

Duration: 6 days

Time span: December 10 2025 to December 15 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 2.0 °C
  • Mean temperature: 25.9 °C
  • Maximum temperature anomaly: 3.5 °C
  • Maximum temperature: 28.8 °C

Event center: -5.0°S 22.0°E

Area affected: 702130 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-Dec-10_to_2025-Dec-15_22.0_-5.0

Cold spell occuring from December 09 2025 to December 15 2025 at -62.0°S 339.5°E

Download data: JSON

Event type: Cold spell

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

  • Antarctica

Duration: 7 days

Time span: December 09 2025 to December 15 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -1.5 °C
  • Mean temperature: -2.6 °C
  • Minimum temperature anomaly: -2.7 °C
  • Minimum temperature: -4.2 °C

Event center: -62.0°S 339.5°E

Area affected: 252759 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-09_to_2025-Dec-15_339.5_-62.0

Cold spell occuring from December 09 2025 to December 13 2025 at 9.5°N 81.5°E

Download data: JSON

Event type: Cold spell

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

  • Sri Lanka

Duration: 5 days

Time span: December 09 2025 to December 13 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -0.9 °C
  • Mean temperature: 25.5 °C
  • Minimum temperature anomaly: -1.3 °C
  • Minimum temperature: 24.5 °C

Event center: 9.5°N 81.5°E

Area affected: 88140 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-09_to_2025-Dec-13_81.5_9.5

Cold spell occuring from December 09 2025 to December 14 2025 at 15.5°N 41.0°E

Download data: JSON

Event type: Cold spell

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

  • Eritrea

Duration: 6 days

Time span: December 09 2025 to December 14 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -1.0 °C
  • Mean temperature: 25.5 °C
  • Minimum temperature anomaly: -1.5 °C
  • Minimum temperature: 24.8 °C

Event center: 15.5°N 41.0°E

Area affected: 62473 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-09_to_2025-Dec-14_41.0_15.5

Heat wave occuring from December 08 2025 to December 21 2025 at 36.0°N 29.5°E

Download data: JSON

Event type: Heat wave

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

  • Egypt
  • Greece
  • Türkiye

Duration: 14 days

Time span: December 08 2025 to December 21 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 2.4 °C
  • Mean temperature: 17.9 °C
  • Maximum temperature anomaly: 5.2 °C
  • Maximum temperature: 19.8 °C

Event center: 36.0°N 29.5°E

Area affected: 232757 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-Dec-08_to_2025-Dec-21_29.5_36.0

Heat wave occuring from December 08 2025 to December 14 2025 at -21.5°S 318.0°E

Download data: JSON

Event type: Heat wave

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

  • Brazil

Duration: 7 days

Time span: December 08 2025 to December 14 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 2.3 °C
  • Mean temperature: 26.7 °C
  • Maximum temperature anomaly: 6.1 °C
  • Maximum temperature: 31.7 °C

Event center: -21.5°S 318.0°E

Area affected: 88515 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-Dec-08_to_2025-Dec-14_318.0_-21.5