Category: Heat waves affecting New Zealand

Download data: JSON

Event type: Heat wave

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

• New Zealand

Duration: 3 days

Time span: March 21 2025 to March 23 2025

Statistics over entire affected area:

• Mean temperature anomaly: 2.1 °C
• Mean temperature: 16.2 °C
• Maximum temperature anomaly: 2.4 °C
• Maximum temperature: 17.0 °C

Event center: -45.0°S 181.5°E

Area affected: 57130 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-Mar-21_to_2025-Mar-23_181.5_-45.0

Download data: JSON

Event type: Heat wave

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

• New Zealand

Duration: 12 days

Time span: December 17 2024 to December 28 2024

Statistics over entire affected area:

• Mean temperature anomaly: 2.5 °C
• Mean temperature: 17.1 °C
• Maximum temperature anomaly: 6.6 °C
• Maximum temperature: 19.7 °C

Event center: -43.5°S 169.0°E

Area affected: 271858 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-Dec-17_to_2024-Dec-28_169.0_-43.5

Download data: JSON

Event type: Heat wave

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

• New Zealand

Duration: 6 days

Time span: December 01 2024 to December 06 2024

Statistics over entire affected area:

• Mean temperature anomaly: 3.3 °C
• Mean temperature: 18.5 °C
• Maximum temperature anomaly: 6.8 °C
• Maximum temperature: 23.4 °C

Event center: -38.0°S 177.0°E

Area affected: 296187 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-Dec-01_to_2024-Dec-06_177.0_-38.0

Download data: JSON

Event type: Heat wave

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

• New Zealand

Duration: 7 days

Time span: November 30 2024 to December 06 2024

Statistics over entire affected area:

• Mean temperature anomaly: 4.6 °C
• Mean temperature: 15.2 °C
• Maximum temperature anomaly: 7.8 °C
• Maximum temperature: 21.7 °C

Event center: -44.5°S 169.5°E

Area affected: 108217 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-Nov-30_to_2024-Dec-06_169.5_-44.5

Download data: JSON

Event type: Heat wave

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

• New Zealand

Duration: 8 days

Time span: November 16 2024 to November 23 2024

Statistics over entire affected area:

• Mean temperature anomaly: 2.5 °C
• Mean temperature: 5.9 °C
• Maximum temperature anomaly: 4.3 °C
• Maximum temperature: 12.2 °C

Event center: -57.5°S 167.0°E

Area affected: 2832907 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-Nov-16_to_2024-Nov-23_167.0_-57.5

Download data: JSON

Event type: Heat wave

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

• New Zealand

Duration: 3 days

Time span: November 11 2024 to November 13 2024

Statistics over entire affected area:

• Mean temperature anomaly: 1.9 °C
• Mean temperature: 11.0 °C
• Maximum temperature anomaly: 3.0 °C
• Maximum temperature: 12.8 °C

Event center: -49.0°S 161.5°E

Area affected: 191843 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-Nov-11_to_2024-Nov-13_161.5_-49.0

Download data: JSON

Event type: Heat wave

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

• New Zealand

Duration: 6 days

Time span: November 09 2024 to November 14 2024

Statistics over entire affected area:

• Mean temperature anomaly: 1.6 °C
• Mean temperature: 8.9 °C
• Maximum temperature anomaly: 3.1 °C
• Maximum temperature: 11.2 °C

Event center: -53.0°S 176.0°E

Area affected: 270201 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-Nov-09_to_2024-Nov-14_176.0_-53.0

Download data: JSON

Event type: Heat wave

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

• New Zealand

Duration: 8 days

Time span: October 01 2024 to October 08 2024

Statistics over entire affected area:

• Mean temperature anomaly: 2.2 °C
• Mean temperature: 11.3 °C
• Maximum temperature anomaly: 3.2 °C
• Maximum temperature: 14.8 °C

Event center: -46.0°S 183.0°E

Area affected: 396059 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-Oct-01_to_2024-Oct-08_183.0_-46.0