Category: Extremes affecting Indonesia

Heat wave occuring from March 01 2026 to March 04 2026 at -7.0°S 143.5°E

Download data: JSON

Event type: Heat wave

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

  • Indonesia
  • Papua New Guinea

Duration: 4 days

Time span: March 01 2026 to March 04 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 1.8 °C
  • Mean temperature: 27.4 °C
  • Maximum temperature anomaly: 2.9 °C
  • Maximum temperature: 30.1 °C

Event center: -7.0°S 143.5°E

Area affected: 55316 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_2026-Mar-01_to_2026-Mar-04_143.5_-7.0

Heat wave occuring from January 18 2026 to January 29 2026 at -8.5°S 143.5°E

Download data: JSON

Event type: Heat wave

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

  • Indonesia
  • Papua New Guinea

Duration: 12 days

Time span: January 18 2026 to January 29 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 1.7 °C
  • Mean temperature: 28.7 °C
  • Maximum temperature anomaly: 3.0 °C
  • Maximum temperature: 29.8 °C

Event center: -8.5°S 143.5°E

Area affected: 159078 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_2026-Jan-18_to_2026-Jan-29_143.5_-8.5

Heat wave occuring from January 03 2026 to January 09 2026 at -5.5°S 103.5°E

Download data: JSON

Event type: Heat wave

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

  • Indonesia

Duration: 7 days

Time span: January 03 2026 to January 09 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 1.4 °C
  • Mean temperature: 27.8 °C
  • Maximum temperature anomaly: 2.2 °C
  • Maximum temperature: 29.0 °C

Event center: -5.5°S 103.5°E

Area affected: 694922 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_2026-Jan-03_to_2026-Jan-09_103.5_-5.5

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

Heat wave occuring from February 26 2026 to March 12 2026 at -2.0°S 139.5°E

Download data: JSON

Event type: Heat wave

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

  • Indonesia
  • Papua New Guinea

Duration: 15 days

Time span: February 26 2026 to March 12 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 1.2 °C
  • Mean temperature: 28.2 °C
  • Maximum temperature anomaly: 2.7 °C
  • Maximum temperature: 30.0 °C

Event center: -2.0°S 139.5°E

Area affected: 488077 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_2026-Feb-26_to_2026-Mar-12_139.5_-2.0

Heat wave occuring from February 17 2026 to February 25 2026 at 3.0°N 97.0°E

Download data: JSON

Event type: Heat wave

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

  • Indonesia

Duration: 9 days

Time span: February 17 2026 to February 25 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 1.4 °C
  • Mean temperature: 28.4 °C
  • Maximum temperature anomaly: 2.3 °C
  • Maximum temperature: 29.6 °C

Event center: 3.0°N 97.0°E

Area affected: 327384 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_2026-Feb-17_to_2026-Feb-25_97.0_3.0

Heat wave occuring from February 15 2026 to February 20 2026 at -8.0°S 132.5°E

Download data: JSON

Event type: Heat wave

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

  • Indonesia

Duration: 6 days

Time span: February 15 2026 to February 20 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 0.9 °C
  • Mean temperature: 28.2 °C
  • Maximum temperature anomaly: 1.4 °C
  • Maximum temperature: 28.9 °C

Event center: -8.0°S 132.5°E

Area affected: 235905 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_2026-Feb-15_to_2026-Feb-20_132.5_-8.0

Heat wave occuring from February 13 2026 to February 19 2026 at -3.0°S 143.0°E

Download data: JSON

Event type: Heat wave

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

  • Indonesia
  • Papua New Guinea

Duration: 7 days

Time span: February 13 2026 to February 19 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 0.9 °C
  • Mean temperature: 28.0 °C
  • Maximum temperature anomaly: 1.5 °C
  • Maximum temperature: 28.5 °C

Event center: -3.0°S 143.0°E

Area affected: 92662 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_2026-Feb-13_to_2026-Feb-19_143.0_-3.0

Heat wave occuring from February 13 2026 to February 26 2026 at -11.5°S 162.5°E

Download data: JSON

Event type: Heat wave

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

  • Australia
  • Indonesia
  • Papua New Guinea
  • Solomon Islands
  • Vanuatu

Duration: 14 days

Time span: February 13 2026 to February 26 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 1.3 °C
  • Mean temperature: 28.6 °C
  • Maximum temperature anomaly: 2.8 °C
  • Maximum temperature: 29.9 °C

Event center: -11.5°S 162.5°E

Area affected: 2217442 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_2026-Feb-13_to_2026-Feb-26_162.5_-11.5