Category: Cold spells affecting Indonesia

Cold spell occuring from March 24 2026 to March 29 2026 at -3.5°S 139.5°E

Download data: JSON

Event type: Cold spell

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

  • Indonesia

Duration: 6 days

Time span: March 24 2026 to March 29 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -1.5 °C
  • Mean temperature: 21.6 °C
  • Minimum temperature anomaly: -2.5 °C
  • Minimum temperature: 10.2 °C

Event center: -3.5°S 139.5°E

Area affected: 111058 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-24_to_2026-Mar-29_139.5_-3.5

Cold spell occuring from March 24 2026 to March 28 2026 at -8.0°S 139.5°E

Download data: JSON

Event type: Cold spell

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

  • Indonesia
  • Papua New Guinea

Duration: 5 days

Time span: March 24 2026 to March 28 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -1.2 °C
  • Mean temperature: 25.6 °C
  • Minimum temperature anomaly: -2.6 °C
  • Minimum temperature: 24.3 °C

Event center: -8.0°S 139.5°E

Area affected: 64228 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-24_to_2026-Mar-28_139.5_-8.0

Cold spell occuring from March 18 2026 to March 25 2026 at -7.5°S 126.0°E

Download data: JSON

Event type: Cold spell

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

  • Indonesia
  • Timor-Leste

Duration: 8 days

Time span: March 18 2026 to March 25 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -0.9 °C
  • Mean temperature: 26.3 °C
  • Minimum temperature anomaly: -1.3 °C
  • Minimum temperature: 24.9 °C

Event center: -7.5°S 126.0°E

Area affected: 174930 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-18_to_2026-Mar-25_126.0_-7.5

Cold spell occuring from March 17 2026 to March 21 2026 at -7.0°S 139.0°E

Download data: JSON

Event type: Cold spell

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

  • Indonesia
  • Papua New Guinea

Duration: 5 days

Time span: March 17 2026 to March 21 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -1.4 °C
  • Mean temperature: 25.4 °C
  • Minimum temperature anomaly: -2.0 °C
  • Minimum temperature: 24.5 °C

Event center: -7.0°S 139.0°E

Area affected: 110321 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-17_to_2026-Mar-21_139.0_-7.0

Cold spell occuring from December 12 2025 to December 17 2025 at 2.5°N 99.0°E

Download data: JSON

Event type: Cold spell

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

  • Indonesia
  • Malaysia

Duration: 6 days

Time span: December 12 2025 to December 17 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -1.3 °C
  • Mean temperature: 24.6 °C
  • Minimum temperature anomaly: -2.2 °C
  • Minimum temperature: 20.4 °C

Event center: 2.5°N 99.0°E

Area affected: 148303 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-12_to_2025-Dec-17_99.0_2.5

Cold spell occuring from December 06 2025 to December 13 2025 at -8.0°S 138.0°E

Download data: JSON

Event type: Cold spell

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

  • Indonesia
  • Papua New Guinea

Duration: 8 days

Time span: December 06 2025 to December 13 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -1.3 °C
  • Mean temperature: 26.2 °C
  • Minimum temperature anomaly: -2.9 °C
  • Minimum temperature: 24.7 °C

Event center: -8.0°S 138.0°E

Area affected: 180335 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-06_to_2025-Dec-13_138.0_-8.0

Cold spell occuring from November 20 2025 to November 28 2025 at 4.5°N 98.0°E

Download data: JSON

Event type: Cold spell

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

  • Indonesia

Duration: 9 days

Time span: November 20 2025 to November 28 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -1.5 °C
  • Mean temperature: 21.9 °C
  • Minimum temperature anomaly: -3.4 °C
  • Minimum temperature: 16.0 °C

Event center: 4.5°N 98.0°E

Area affected: 104874 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-20_to_2025-Nov-28_98.0_4.5

Cold spell occuring from November 09 2025 to November 23 2025 at -11.5°S 131.0°E

Download data: JSON

Event type: Cold spell

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

  • Australia
  • Indonesia

Duration: 15 days

Time span: November 09 2025 to November 23 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -2.7 °C
  • Mean temperature: 26.9 °C
  • Minimum temperature anomaly: -9.7 °C
  • Minimum temperature: 21.9 °C

Event center: -11.5°S 131.0°E

Area affected: 1604164 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-09_to_2025-Nov-23_131.0_-11.5

Cold spell occuring from October 04 2025 to October 08 2025 at 5.0°N 116.5°E

Download data: JSON

Event type: Cold spell

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

  • Indonesia
  • Malaysia

Duration: 5 days

Time span: October 04 2025 to October 08 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -1.4 °C
  • Mean temperature: 22.8 °C
  • Minimum temperature anomaly: -2.4 °C
  • Minimum temperature: 18.7 °C

Event center: 5.0°N 116.5°E

Area affected: 55458 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-04_to_2025-Oct-08_116.5_5.0

Cold spell occuring from September 08 2025 to September 12 2025 at -3.0°S 111.5°E

Download data: JSON

Event type: Cold spell

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

  • Indonesia

Duration: 5 days

Time span: September 08 2025 to September 12 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -0.9 °C
  • Mean temperature: 26.2 °C
  • Minimum temperature anomaly: -1.5 °C
  • Minimum temperature: 24.9 °C

Event center: -3.0°S 111.5°E

Area affected: 83289 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-Sep-08_to_2025-Sep-12_111.5_-3.0