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: 6 days

Time span: February 15 2026 to February 20 2026

Statistics over entire affected area:

• Mean temperature anomaly: 6.5 °C
• Mean temperature: -20.6 °C
• Maximum temperature anomaly: 11.6 °C
• Maximum temperature: -4.8 °C

Event center: -82.5°S 315.5°E

Area affected: 690641 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-Feb-15_to_2026-Feb-20_315.5_-82.5

Download data: JSON

Event type: Heat wave

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

• Antarctica

Duration: 3 days

Time span: February 14 2026 to February 16 2026

Statistics over entire affected area:

• Mean temperature anomaly: 1.1 °C
• Mean temperature: 0.8 °C
• Maximum temperature anomaly: 1.6 °C
• Maximum temperature: 1.1 °C

Event center: -66.5°S 7.5°E

Area affected: 63154 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-Feb-14_to_2026-Feb-16_7.5_-66.5

Download data: JSON

Event type: Heat wave

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

• Antarctica

Duration: 8 days

Time span: February 13 2026 to February 20 2026

Statistics over entire affected area:

• Mean temperature anomaly: 1.3 °C
• Mean temperature: 0.2 °C
• Maximum temperature anomaly: 1.9 °C
• Maximum temperature: 0.7 °C

Event center: -68.5°S 345.0°E

Area affected: 143077 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-Feb-13_to_2026-Feb-20_345.0_-68.5

Download data: JSON

Event type: Heat wave

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

• Antarctica

Duration: 5 days

Time span: February 12 2026 to February 16 2026

Statistics over entire affected area:

• Mean temperature anomaly: 8.8 °C
• Mean temperature: -8.0 °C
• Maximum temperature anomaly: 12.5 °C
• Maximum temperature: -3.6 °C

Event center: -81.0°S 190.5°E

Area affected: 89625 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-Feb-12_to_2026-Feb-16_190.5_-81.0

Download data: JSON

Event type: Heat wave

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

• Antarctica

Duration: 6 days

Time span: February 05 2026 to February 10 2026

Statistics over entire affected area:

• Mean temperature anomaly: 6.0 °C
• Mean temperature: -29.6 °C
• Maximum temperature anomaly: 8.9 °C
• Maximum temperature: -20.0 °C

Event center: -76.0°S 127.0°E

Area affected: 324525 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-Feb-05_to_2026-Feb-10_127.0_-76.0

Download data: JSON

Event type: Heat wave

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

• Antarctica

Duration: 4 days

Time span: February 05 2026 to February 08 2026

Statistics over entire affected area:

• Mean temperature anomaly: 5.1 °C
• Mean temperature: -30.6 °C
• Maximum temperature anomaly: 7.2 °C
• Maximum temperature: -28.6 °C

Event center: -84.5°S 38.0°E

Area affected: 53088 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-Feb-05_to_2026-Feb-08_38.0_-84.5

Download data: JSON

Event type: Heat wave

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

• Antarctica

Duration: 7 days

Time span: February 02 2026 to February 08 2026

Statistics over entire affected area:

• Mean temperature anomaly: 1.3 °C
• Mean temperature: 0.4 °C
• Maximum temperature anomaly: 1.9 °C
• Maximum temperature: 1.2 °C

Event center: -68.5°S 172.5°E

Area affected: 221344 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-Feb-02_to_2026-Feb-08_172.5_-68.5

Download data: JSON

Event type: Heat wave

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

• Antarctica

Duration: 6 days

Time span: January 31 2026 to February 05 2026

Statistics over entire affected area:

• Mean temperature anomaly: 6.3 °C
• Mean temperature: -24.6 °C
• Maximum temperature anomaly: 10.6 °C
• Maximum temperature: -1.7 °C

Event center: -75.5°S 16.5°E

Area affected: 958528 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-Jan-31_to_2026-Feb-05_16.5_-75.5

Download data: JSON

Event type: Heat wave

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

• Antarctica

Duration: 10 days

Time span: January 23 2026 to February 01 2026

Statistics over entire affected area:

• Mean temperature anomaly: 1.6 °C
• Mean temperature: -0.3 °C
• Maximum temperature anomaly: 4.9 °C
• Maximum temperature: 0.6 °C

Event center: -73.0°S 335.5°E

Area affected: 100811 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-Jan-23_to_2026-Feb-01_335.5_-73.0

Download data: JSON

Event type: Heat wave

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

• Antarctica

Duration: 3 days

Time span: December 30 2025 to January 01 2026

Statistics over entire affected area:

• Mean temperature anomaly: 3.3 °C
• Mean temperature: -1.6 °C
• Maximum temperature anomaly: 5.2 °C
• Maximum temperature: 2.0 °C

Event center: -74.5°S 257.5°E

Area affected: 196564 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_2025-Dec-30_to_2026-Jan-01_257.5_-74.5