Category: Extremes affecting Cook Islands

Download data: JSON

Event type: Cold spell

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

• Cook Islands

Duration: 9 days

Time span: October 10 2025 to October 18 2025

Statistics over entire affected area:

• Mean temperature anomaly: -1.1 °C
• Mean temperature: 25.7 °C
• Minimum temperature anomaly: -1.7 °C
• Minimum temperature: 24.8 °C

Event center: -9.0°S 194.0°E

Area affected: 622987 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: Cold_spell_2025-Oct-10_to_2025-Oct-18_194.0_-9.0

Download data: JSON

Event type: Cold spell

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

• Cook Islands

Duration: 6 days

Time span: May 07 2025 to May 12 2025

Statistics over entire affected area:

• Mean temperature anomaly: -1.6 °C
• Mean temperature: 22.9 °C
• Minimum temperature anomaly: -2.7 °C
• Minimum temperature: 20.2 °C

Event center: -21.5°S 204.0°E

Area affected: 203727 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: Cold_spell_2025-May-07_to_2025-May-12_204.0_-21.5

Download data: JSON

Event type: Cold spell

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

• Cook Islands

Duration: 4 days

Time span: May 02 2025 to May 05 2025

Statistics over entire affected area:

• Mean temperature anomaly: -0.9 °C
• Mean temperature: 26.7 °C
• Minimum temperature anomaly: -1.2 °C
• Minimum temperature: 26.4 °C

Event center: -9.5°S 195.0°E

Area affected: 152303 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: Cold_spell_2025-May-02_to_2025-May-05_195.0_-9.5

Download data: JSON

Event type: Cold spell

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

• Cook Islands

Duration: 3 days

Time span: March 05 2025 to March 07 2025

Statistics over entire affected area:

• Mean temperature anomaly: -1.1 °C
• Mean temperature: 26.0 °C
• Minimum temperature anomaly: -1.4 °C
• Minimum temperature: 25.7 °C

Event center: -10.0°S 198.5°E

Area affected: 57758 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: Cold_spell_2025-Mar-05_to_2025-Mar-07_198.5_-10.0