Category: Extremes affecting Antarctica

Heat wave occuring from April 07 2026 to April 13 2026 at -69.5°S 1.5°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: April 07 2026 to April 13 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 6.2 °C
  • Mean temperature: -4.9 °C
  • Maximum temperature anomaly: 12.7 °C
  • Maximum temperature: -0.6 °C

Event center: -69.5°S 1.5°E

Area affected: 531275 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_2026-Apr-07_to_2026-Apr-13_1.5_-69.5

Cold spell occuring from April 06 2026 to April 15 2026 at -78.5°S 200.5°E

Download data: JSON

Event type: Cold spell

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

  • Antarctica

Duration: 10 days

Time span: April 06 2026 to April 15 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -12.0 °C
  • Mean temperature: -42.9 °C
  • Minimum temperature anomaly: -18.9 °C
  • Minimum temperature: -48.2 °C

Event center: -78.5°S 200.5°E

Area affected: 132448 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-Apr-06_to_2026-Apr-15_200.5_-78.5

Cold spell occuring from April 05 2026 to April 29 2026 at -68.5°S 238.5°E

Download data: JSON

Event type: Cold spell

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

  • Antarctica

Duration: 25 days

Time span: April 05 2026 to April 29 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -7.0 °C
  • Mean temperature: -15.1 °C
  • Minimum temperature anomaly: -18.2 °C
  • Minimum temperature: -49.6 °C

Event center: -68.5°S 238.5°E

Area affected: 4563527 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-Apr-05_to_2026-Apr-29_238.5_-68.5

Cold spell occuring from April 03 2026 to April 06 2026 at -83.0°S 252.5°E

Download data: JSON

Event type: Cold spell

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

  • Antarctica

Duration: 4 days

Time span: April 03 2026 to April 06 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -7.9 °C
  • Mean temperature: -37.9 °C
  • Minimum temperature anomaly: -10.7 °C
  • Minimum temperature: -45.1 °C

Event center: -83.0°S 252.5°E

Area affected: 113276 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-Apr-03_to_2026-Apr-06_252.5_-83.0

Heat wave occuring from March 29 2026 to April 05 2026 at -65.0°S 50.5°E

Download data: JSON

Event type: Heat wave

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

  • Antarctica

Duration: 8 days

Time span: March 29 2026 to April 05 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 3.4 °C
  • Mean temperature: -1.9 °C
  • Maximum temperature anomaly: 12.7 °C
  • Maximum temperature: 3.6 °C

Event center: -65.0°S 50.5°E

Area affected: 2091908 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_2026-Mar-29_to_2026-Apr-05_50.5_-65.0

Cold spell occuring from March 28 2026 to March 30 2026 at -66.5°S 112.0°E

Download data: JSON

Event type: Cold spell

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

  • Antarctica

Duration: 3 days

Time span: March 28 2026 to March 30 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -9.9 °C
  • Mean temperature: -38.9 °C
  • Minimum temperature anomaly: -12.1 °C
  • Minimum temperature: -57.8 °C

Event center: -66.5°S 112.0°E

Area affected: 123741 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-Mar-28_to_2026-Mar-30_112.0_-66.5

Heat wave occuring from March 28 2026 to April 24 2026 at -62.0°S 296.0°E

Download data: JSON

Event type: Heat wave

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

  • Antarctica
  • Argentina
  • Falkland Islands
  • South Georgia and the South Sandwich Islands

Duration: 28 days

Time span: March 28 2026 to April 24 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 6.4 °C
  • Mean temperature: -2.6 °C
  • Maximum temperature anomaly: 22.8 °C
  • Maximum temperature: 21.9 °C

Event center: -62.0°S 296.0°E

Area affected: 8951823 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_2026-Mar-28_to_2026-Apr-24_296.0_-62.0

Heat wave occuring from March 27 2026 to April 11 2026 at -81.0°S 104.0°E

Download data: JSON

Event type: Heat wave

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

  • Antarctica

Duration: 16 days

Time span: March 27 2026 to April 11 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 10.4 °C
  • Mean temperature: -39.8 °C
  • Maximum temperature anomaly: 22.5 °C
  • Maximum temperature: -3.8 °C

Event center: -81.0°S 104.0°E

Area affected: 2390477 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_2026-Mar-27_to_2026-Apr-11_104.0_-81.0

Cold spell occuring from March 27 2026 to March 30 2026 at -76.5°S 246.0°E

Download data: JSON

Event type: Cold spell

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

  • Antarctica

Duration: 4 days

Time span: March 27 2026 to March 30 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -9.1 °C
  • Mean temperature: -33.5 °C
  • Minimum temperature anomaly: -12.2 °C
  • Minimum temperature: -38.1 °C

Event center: -76.5°S 246.0°E

Area affected: 78460 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-Mar-27_to_2026-Mar-30_246.0_-76.5

Heat wave occuring from March 23 2026 to March 30 2026 at -59.5°S 75.5°E

Download data: JSON

Event type: Heat wave

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

  • Antarctica

Duration: 8 days

Time span: March 23 2026 to March 30 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 4.8 °C
  • Mean temperature: -6.8 °C
  • Maximum temperature anomaly: 17.6 °C
  • Maximum temperature: 5.3 °C

Event center: -59.5°S 75.5°E

Area affected: 1899617 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_2026-Mar-23_to_2026-Mar-30_75.5_-59.5