Category: Heat waves affecting Cook Islands

Download data: JSON

Event type: Heat wave

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

• Cook Islands

Duration: 6 days

Time span: October 05 2025 to October 10 2025

Statistics over entire affected area:

• Mean temperature anomaly: 1.4 °C
• Mean temperature: 24.8 °C
• Maximum temperature anomaly: 2.4 °C
• Maximum temperature: 26.7 °C

Event center: -20.5°S 201.5°E

Area affected: 436151 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-Oct-05_to_2025-Oct-10_201.5_-20.5

Download data: JSON

Event type: Heat wave

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

• Cook Islands

Duration: 5 days

Time span: July 19 2025 to July 23 2025

Statistics over entire affected area:

• Mean temperature anomaly: 1.3 °C
• Mean temperature: 25.9 °C
• Maximum temperature anomaly: 1.9 °C
• Maximum temperature: 27.2 °C

Event center: -20.5°S 202.5°E

Area affected: 170052 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-Jul-19_to_2025-Jul-23_202.5_-20.5

Download data: JSON

Event type: Heat wave

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

• Cook Islands

Duration: 11 days

Time span: June 30 2025 to July 10 2025

Statistics over entire affected area:

• Mean temperature anomaly: 1.0 °C
• Mean temperature: 28.1 °C
• Maximum temperature anomaly: 1.3 °C
• Maximum temperature: 28.5 °C

Event center: -8.0°S 200.5°E

Area affected: 238265 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-Jun-30_to_2025-Jul-10_200.5_-8.0

Download data: JSON

Event type: Heat wave

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

• Cook Islands

Duration: 23 days

Time span: August 17 2024 to September 08 2024

Statistics over entire affected area:

• Mean temperature anomaly: 0.9 °C
• Mean temperature: 27.2 °C
• Maximum temperature anomaly: 1.7 °C
• Maximum temperature: 28.5 °C

Event center: -7.5°S 208.0°E

Area affected: 2083889 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_2024-Aug-17_to_2024-Sep-08_208.0_-7.5

Download data: JSON

Event type: Heat wave

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

• Cook Islands

Duration: 27 days

Time span: July 25 2024 to August 20 2024

Statistics over entire affected area:

• Mean temperature anomaly: 0.9 °C
• Mean temperature: 26.4 °C
• Maximum temperature anomaly: 1.8 °C
• Maximum temperature: 28.5 °C

Event center: -12.5°S 223.0°E

Area affected: 3828009 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_2024-Jul-25_to_2024-Aug-20_223.0_-12.5

Download data: JSON

Event type: Heat wave

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

• Cook Islands

Duration: 10 days

Time span: July 22 2024 to July 31 2024

Statistics over entire affected area:

• Mean temperature anomaly: 0.9 °C
• Mean temperature: 27.7 °C
• Maximum temperature anomaly: 1.6 °C
• Maximum temperature: 28.7 °C

Event center: -7.5°S 205.5°E

Area affected: 822259 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_2024-Jul-22_to_2024-Jul-31_205.5_-7.5

Download data: JSON

Event type: Heat wave

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

• Cook Islands

Duration: 9 days

Time span: March 27 2023 to April 04 2023

Statistics over entire affected area:

• Mean temperature anomaly: 1.1 °C
• Mean temperature: 28.4 °C
• Maximum temperature anomaly: 1.6 °C
• Maximum temperature: 28.8 °C

Event center: -10.0°S 198.5°E

Area affected: 142722 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_2023-Mar-27_to_2023-Apr-04_198.5_-10.0

Download data: JSON

Event type: Heat wave

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

• Cook Islands

Duration: 5 days

Time span: March 21 2023 to March 25 2023

Statistics over entire affected area:

• Mean temperature anomaly: 1.1 °C
• Mean temperature: 27.3 °C
• Maximum temperature anomaly: 1.5 °C
• Maximum temperature: 27.9 °C

Event center: -22.0°S 205.5°E

Area affected: 138008 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_2023-Mar-21_to_2023-Mar-25_205.5_-22.0