Category: Cold spells affecting New Zealand

Download data: JSON

Event type: Cold spell

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

• New Zealand

Duration: 7 days

Time span: April 19 2026 to April 25 2026

Statistics over entire affected area:

• Mean temperature anomaly: -3.2 °C
• Mean temperature: 10.6 °C
• Minimum temperature anomaly: -9.2 °C
• Minimum temperature: -4.0 °C

Event center: -36.5°S 174.5°E

Area affected: 308811 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_2026-Apr-19_to_2026-Apr-25_174.5_-36.5

Download data: JSON

Event type: Cold spell

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

• New Zealand

Duration: 5 days

Time span: March 01 2026 to March 05 2026

Statistics over entire affected area:

• Mean temperature anomaly: -3.7 °C
• Mean temperature: 14.3 °C
• Minimum temperature anomaly: -10.6 °C
• Minimum temperature: 0.4 °C

Event center: -37.0°S 175.0°E

Area affected: 569636 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_2026-Mar-01_to_2026-Mar-05_175.0_-37.0

Download data: JSON

Event type: Cold spell

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

• New Zealand

Duration: 8 days

Time span: June 03 2025 to June 10 2025

Statistics over entire affected area:

• Mean temperature anomaly: -2.5 °C
• Mean temperature: 8.9 °C
• Minimum temperature anomaly: -8.5 °C
• Minimum temperature: -9.7 °C

Event center: -44.0°S 170.5°E

Area affected: 611613 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-Jun-03_to_2025-Jun-10_170.5_-44.0

Download data: JSON

Event type: Cold spell

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

• New Zealand

Duration: 5 days

Time span: February 10 2025 to February 14 2025

Statistics over entire affected area:

• Mean temperature anomaly: -1.7 °C
• Mean temperature: 21.2 °C
• Minimum temperature anomaly: -2.3 °C
• Minimum temperature: 18.5 °C

Event center: -30.0°S 183.5°E

Area affected: 856279 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-Feb-10_to_2025-Feb-14_183.5_-30.0

Download data: JSON

Event type: Cold spell

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

• New Zealand

Duration: 16 days

Time span: January 01 2025 to January 16 2025

Statistics over entire affected area:

• Mean temperature anomaly: -1.9 °C
• Mean temperature: 18.9 °C
• Minimum temperature anomaly: -5.9 °C
• Minimum temperature: 8.1 °C

Event center: -27.0°S 177.5°E

Area affected: 1446830 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-Jan-01_to_2025-Jan-16_177.5_-27.0

Download data: JSON

Event type: Cold spell

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

• New Zealand

Duration: 3 days

Time span: October 25 2024 to October 27 2024

Statistics over entire affected area:

• Mean temperature anomaly: -1.9 °C
• Mean temperature: 7.3 °C
• Minimum temperature anomaly: -2.7 °C
• Minimum temperature: 5.9 °C

Event center: -48.5°S 168.5°E

Area affected: 53693 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_2024-Oct-25_to_2024-Oct-27_168.5_-48.5