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: 5 days

Time span: April 21 2026 to April 25 2026

Statistics over entire affected area:

• Mean temperature anomaly: 7.7 °C
• Mean temperature: -36.5 °C
• Maximum temperature anomaly: 11.3 °C
• Maximum temperature: -12.5 °C

Event center: -74.0°S 30.5°E

Area affected: 192250 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-21_to_2026-Apr-25_30.5_-74.0

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

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

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

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

Download data: JSON

Event type: Heat wave

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

• Antarctica

Duration: 3 days

Time span: March 19 2026 to March 21 2026

Statistics over entire affected area:

• Mean temperature anomaly: 8.8 °C
• Mean temperature: -42.6 °C
• Maximum temperature anomaly: 11.5 °C
• Maximum temperature: -33.7 °C

Event center: -75.5°S 40.5°E

Area affected: 176741 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-19_to_2026-Mar-21_40.5_-75.5

Download data: JSON

Event type: Heat wave

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

• Antarctica

Duration: 11 days

Time span: March 16 2026 to March 26 2026

Statistics over entire affected area:

• Mean temperature anomaly: 10.0 °C
• Mean temperature: -32.5 °C
• Maximum temperature anomaly: 17.3 °C
• Maximum temperature: -5.4 °C

Event center: -73.0°S 130.5°E

Area affected: 862012 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-16_to_2026-Mar-26_130.5_-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: March 15 2026 to March 19 2026

Statistics over entire affected area:

• Mean temperature anomaly: 3.4 °C
• Mean temperature: 0.0 °C
• Maximum temperature anomaly: 8.0 °C
• Maximum temperature: 0.8 °C

Event center: -72.0°S 267.0°E

Area affected: 320458 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-15_to_2026-Mar-19_267.0_-72.0