Category: Heat waves affecting Antarctica

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

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

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

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

Download data: JSON

Event type: Heat wave

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

• Antarctica

Duration: 3 days

Time span: June 25 2026 to June 27 2026

Statistics over entire affected area:

• Mean temperature anomaly: 7.7 °C
• Mean temperature: -44.6 °C
• Maximum temperature anomaly: 9.2 °C
• Maximum temperature: -36.4 °C

Event center: -88.5°S 261.0°E

Area affected: 53076 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-Jun-25_to_2026-Jun-27_261.0_-88.5

Download data: JSON

Event type: Heat wave

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

• Antarctica

Duration: 4 days

Time span: June 20 2026 to June 23 2026

Statistics over entire affected area:

• Mean temperature anomaly: 10.0 °C
• Mean temperature: -46.8 °C
• Maximum temperature anomaly: 15.8 °C
• Maximum temperature: -41.1 °C

Event center: -75.0°S 125.5°E

Area affected: 181154 km$^2$

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

Event ID: Heat_wave_2026-Jun-20_to_2026-Jun-23_125.5_-75.0

Download data: JSON

Event type: Heat wave

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

• Antarctica

Duration: 12 days

Time span: June 19 2026 to June 30 2026

Statistics over entire affected area:

• Mean temperature anomaly: 7.8 °C
• Mean temperature: -2.0 °C
• Maximum temperature anomaly: 16.0 °C
• Maximum temperature: 5.3 °C

Event center: -69.0°S 292.0°E

Area affected: 2445159 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-Jun-19_to_2026-Jun-30_292.0_-69.0

Download data: JSON

Event type: Heat wave

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

• Antarctica

Duration: 5 days

Time span: June 18 2026 to June 22 2026

Statistics over entire affected area:

• Mean temperature anomaly: 12.4 °C
• Mean temperature: -19.0 °C
• Maximum temperature anomaly: 21.9 °C
• Maximum temperature: -6.6 °C

Event center: -77.5°S 163.0°E

Area affected: 666742 km$^2$

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

Event ID: Heat_wave_2026-Jun-18_to_2026-Jun-22_163.0_-77.5

Download data: JSON

Event type: Heat wave

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

• Antarctica

Duration: 3 days

Time span: June 18 2026 to June 20 2026

Statistics over entire affected area:

• Mean temperature anomaly: 14.1 °C
• Mean temperature: -16.2 °C
• Maximum temperature anomaly: 20.4 °C
• Maximum temperature: -10.8 °C

Event center: -82.0°S 217.5°E

Area affected: 55689 km$^2$

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

Event ID: Heat_wave_2026-Jun-18_to_2026-Jun-20_217.5_-82.0

Download data: JSON

Event type: Heat wave

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

• Antarctica

Duration: 4 days

Time span: June 17 2026 to June 20 2026

Statistics over entire affected area:

• Mean temperature anomaly: 10.6 °C
• Mean temperature: -16.5 °C
• Maximum temperature anomaly: 15.2 °C
• Maximum temperature: -11.4 °C

Event center: -73.0°S 346.0°E

Area affected: 92750 km$^2$

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

Event ID: Heat_wave_2026-Jun-17_to_2026-Jun-20_346.0_-73.0