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: 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

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 04 2026 to June 08 2026

Statistics over entire affected area:

• Mean temperature anomaly: 9.1 °C
• Mean temperature: -40.9 °C
• Maximum temperature anomaly: 11.2 °C
• Maximum temperature: -26.0 °C

Event center: -88.5°S 204.5°E

Area affected: 89457 km$^2$

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

Event ID: Heat_wave_2026-Jun-04_to_2026-Jun-08_204.5_-88.5

Download data: JSON

Event type: Heat wave

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

• Antarctica

Duration: 5 days

Time span: May 22 2026 to May 26 2026

Statistics over entire affected area:

• Mean temperature anomaly: 8.7 °C
• Mean temperature: -42.9 °C
• Maximum temperature anomaly: 12.5 °C
• Maximum temperature: -31.0 °C

Event center: -79.5°S 109.5°E

Area affected: 400157 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-May-22_to_2026-May-26_109.5_-79.5