Category: Extremes affecting Antarctica

Heat wave occuring from August 03 2026 to August 15 2026 at -64.5°S 140.0°E

Download data: JSON

Event type: Heat wave

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

  • Antarctica

Duration: 13 days

Time span: August 03 2026 to August 15 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 10.2 °C
  • Mean temperature: -6.2 °C
  • Maximum temperature anomaly: 21.4 °C
  • Maximum temperature: 6.7 °C

Event center: -64.5°S 140.0°E

Area affected: 2413939 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-Aug-03_to_2026-Aug-15_140.0_-64.5

Cold spell occuring from July 29 2026 to August 02 2026 at -72.0°S 45.0°E

Download data: JSON

Event type: Cold spell

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

  • Antarctica

Duration: 5 days

Time span: July 29 2026 to August 02 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -10.4 °C
  • Mean temperature: -60.4 °C
  • Minimum temperature anomaly: -14.7 °C
  • Minimum temperature: -70.1 °C

Event center: -72.0°S 45.0°E

Area affected: 122154 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-Jul-29_to_2026-Aug-02_45.0_-72.0

Cold spell occuring from July 29 2026 to July 31 2026 at -72.5°S 58.5°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: July 29 2026 to July 31 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -7.2 °C
  • Mean temperature: -49.6 °C
  • Minimum temperature anomaly: -10.1 °C
  • Minimum temperature: -59.5 °C

Event center: -72.5°S 58.5°E

Area affected: 60934 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-Jul-29_to_2026-Jul-31_58.5_-72.5

Cold spell occuring from July 25 2026 to August 06 2026 at -75.5°S 319.0°E

Download data: JSON

Event type: Cold spell

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

  • Antarctica
  • South Georgia and the South Sandwich Islands

Duration: 13 days

Time span: July 25 2026 to August 06 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -8.6 °C
  • Mean temperature: -24.8 °C
  • Minimum temperature anomaly: -18.1 °C
  • Minimum temperature: -52.5 °C

Event center: -75.5°S 319.0°E

Area affected: 3662805 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-Jul-25_to_2026-Aug-06_319.0_-75.5

Cold spell occuring from July 25 2026 to July 31 2026 at -73.0°S 287.0°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: July 25 2026 to July 31 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -11.7 °C
  • Mean temperature: -33.2 °C
  • Minimum temperature anomaly: -17.3 °C
  • Minimum temperature: -41.0 °C

Event center: -73.0°S 287.0°E

Area affected: 71832 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-Jul-25_to_2026-Jul-31_287.0_-73.0

Heat wave occuring from July 17 2026 to August 07 2026 at -79.0°S 276.0°E

Download data: JSON

Event type: Heat wave

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

  • Antarctica

Duration: 22 days

Time span: July 17 2026 to August 07 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 12.4 °C
  • Mean temperature: -10.6 °C
  • Maximum temperature anomaly: 28.7 °C
  • Maximum temperature: 6.3 °C

Event center: -79.0°S 276.0°E

Area affected: 6968176 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-Jul-17_to_2026-Aug-07_276.0_-79.0

Cold spell occuring from June 09 2026 to August 04 2026 at -66.5°S 119.0°E

Download data: JSON

Event type: Cold spell

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

  • Antarctica

Duration: 57 days

Time span: June 09 2026 to August 04 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -9.6 °C
  • Mean temperature: -48.5 °C
  • Minimum temperature anomaly: -20.3 °C
  • Minimum temperature: -78.3 °C

Event center: -66.5°S 119.0°E

Area affected: 8489917 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-Jun-09_to_2026-Aug-04_119.0_-66.5

Heat wave occuring from July 22 2026 to July 25 2026 at -71.5°S 359.5°E

Download data: JSON

Event type: Heat wave

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

  • Antarctica

Duration: 4 days

Time span: July 22 2026 to July 25 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 12.1 °C
  • Mean temperature: -28.0 °C
  • Maximum temperature anomaly: 15.6 °C
  • Maximum temperature: -9.5 °C

Event center: -71.5°S 359.5°E

Area affected: 121640 km$^2$



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2026-Jul-22_to_2026-Jul-25_359.5_-71.5

Heat wave occuring from July 20 2026 to July 25 2026 at -70.5°S 160.0°E

Download data: JSON

Event type: Heat wave

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

  • Antarctica

Duration: 6 days

Time span: July 20 2026 to July 25 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 11.0 °C
  • Mean temperature: -19.0 °C
  • Maximum temperature anomaly: 18.7 °C
  • Maximum temperature: -2.1 °C

Event center: -70.5°S 160.0°E

Area affected: 488951 km$^2$



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2026-Jul-20_to_2026-Jul-25_160.0_-70.5

Cold spell occuring from July 16 2026 to July 18 2026 at -69.5°S 51.0°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: July 16 2026 to July 18 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -10.3 °C
  • Mean temperature: -59.0 °C
  • Minimum temperature anomaly: -12.8 °C
  • Minimum temperature: -67.6 °C

Event center: -69.5°S 51.0°E

Area affected: 93645 km$^2$



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Cold_spell_2026-Jul-16_to_2026-Jul-18_51.0_-69.5