Cold spell occuring from December 08 2025 to December 11 2025 at -22.0°S 209.5°E

Download data: JSON

Event type: Cold spell

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

  • French Polynesia

Duration: 4 days

Time span: December 08 2025 to December 11 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -1.4 °C
  • Mean temperature: 23.7 °C
  • Minimum temperature anomaly: -1.8 °C
  • Minimum temperature: 22.5 °C

Event center: -22.0°S 209.5°E

Area affected: 57611 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-Dec-08_to_2025-Dec-11_209.5_-22.0

Cold spell occuring from November 27 2025 to December 07 2025 at -15.0°S 212.5°E

Download data: JSON

Event type: Cold spell

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

  • Cook Islands
  • French Polynesia

Duration: 11 days

Time span: November 27 2025 to December 07 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -1.4 °C
  • Mean temperature: 25.3 °C
  • Minimum temperature anomaly: -2.3 °C
  • Minimum temperature: 23.9 °C

Event center: -15.0°S 212.5°E

Area affected: 1016444 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-Nov-27_to_2025-Dec-07_212.5_-15.0

Cold spell occuring from November 10 2025 to November 28 2025 at -16.0°S 206.0°E

Download data: JSON

Event type: Cold spell

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

  • Cook Islands
  • French Polynesia

Duration: 19 days

Time span: November 10 2025 to November 28 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -1.9 °C
  • Mean temperature: 18.9 °C
  • Minimum temperature anomaly: -3.9 °C
  • Minimum temperature: 4.3 °C

Event center: -16.0°S 206.0°E

Area affected: 10051640 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-Nov-10_to_2025-Nov-28_206.0_-16.0

Heat wave occuring from November 09 2025 to November 12 2025 at -23.5°S 208.5°E

Download data: JSON

Event type: Heat wave

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

  • French Polynesia

Duration: 4 days

Time span: November 09 2025 to November 12 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.6 °C
  • Mean temperature: 24.1 °C
  • Maximum temperature anomaly: 2.3 °C
  • Maximum temperature: 25.1 °C

Event center: -23.5°S 208.5°E

Area affected: 152701 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-Nov-09_to_2025-Nov-12_208.5_-23.5

Cold spell occuring from October 10 2025 to October 15 2025 at -15.0°S 212.0°E

Download data: JSON

Event type: Cold spell

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

  • French Polynesia

Duration: 6 days

Time span: October 10 2025 to October 15 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -1.0 °C
  • Mean temperature: 24.9 °C
  • Minimum temperature anomaly: -1.7 °C
  • Minimum temperature: 24.1 °C

Event center: -15.0°S 212.0°E

Area affected: 222137 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-15_212.0_-15.0

Heat wave occuring from September 09 2025 to September 25 2025 at -26.5°S 217.5°E

Download data: JSON

Event type: Heat wave

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

  • French Polynesia

Duration: 17 days

Time span: September 09 2025 to September 25 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.8 °C
  • Mean temperature: 20.0 °C
  • Maximum temperature anomaly: 3.5 °C
  • Maximum temperature: 27.3 °C

Event center: -26.5°S 217.5°E

Area affected: 3113254 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-Sep-09_to_2025-Sep-25_217.5_-26.5

Heat wave occuring from August 02 2025 to August 24 2025 at -20.5°S 223.0°E

Download data: JSON

Event type: Heat wave

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

  • French Polynesia

Duration: 23 days

Time span: August 02 2025 to August 24 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.7 °C
  • Mean temperature: 23.2 °C
  • Maximum temperature anomaly: 3.6 °C
  • Maximum temperature: 27.4 °C

Event center: -20.5°S 223.0°E

Area affected: 3978903 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-Aug-02_to_2025-Aug-24_223.0_-20.5

Cold spell occuring from July 28 2025 to August 01 2025 at -22.0°S 213.0°E

Download data: JSON

Event type: Cold spell

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

  • French Polynesia

Duration: 5 days

Time span: July 28 2025 to August 01 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -1.8 °C
  • Mean temperature: 21.4 °C
  • Minimum temperature anomaly: -2.6 °C
  • Minimum temperature: 19.1 °C

Event center: -22.0°S 213.0°E

Area affected: 568551 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-Jul-28_to_2025-Aug-01_213.0_-22.0

Heat wave occuring from July 05 2025 to July 13 2025 at -30.5°S 219.0°E

Download data: JSON

Event type: Heat wave

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

  • French Polynesia

Duration: 9 days

Time span: July 05 2025 to July 13 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 2.1 °C
  • Mean temperature: 20.9 °C
  • Maximum temperature anomaly: 3.9 °C
  • Maximum temperature: 26.8 °C

Event center: -30.5°S 219.0°E

Area affected: 3743275 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-05_to_2025-Jul-13_219.0_-30.5

Heat wave occuring from June 09 2025 to June 21 2025 at -35.5°S 231.5°E

Download data: JSON

Event type: Heat wave

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

  • French Polynesia

Duration: 13 days

Time span: June 09 2025 to June 21 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 2.4 °C
  • Mean temperature: 20.3 °C
  • Maximum temperature anomaly: 4.5 °C
  • Maximum temperature: 28.2 °C

Event center: -35.5°S 231.5°E

Area affected: 6414866 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-09_to_2025-Jun-21_231.5_-35.5