Category: Heat waves affecting Indonesia

Download data: JSON

Event type: Heat wave

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

• Indonesia

Duration: 5 days

Time span: October 01 2025 to October 05 2025

Statistics over entire affected area:

• Mean temperature anomaly: 1.1 °C
• Mean temperature: 28.3 °C
• Maximum temperature anomaly: 1.7 °C
• Maximum temperature: 29.0 °C

Event center: -0.5°S 108.5°E

Area affected: 86542 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-Oct-01_to_2025-Oct-05_108.5_-0.5

Download data: JSON

Event type: Heat wave

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

• Indonesia

Duration: 5 days

Time span: September 09 2025 to September 13 2025

Statistics over entire affected area:

• Mean temperature anomaly: 1.0 °C
• Mean temperature: 26.9 °C
• Maximum temperature anomaly: 1.7 °C
• Maximum temperature: 27.8 °C

Event center: 0.5°N 124.5°E

Area affected: 58724 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-13_124.5_0.5

Download data: JSON

Event type: Heat wave

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

• Indonesia

Duration: 3 days

Time span: August 25 2025 to August 27 2025

Statistics over entire affected area:

• Mean temperature anomaly: 1.4 °C
• Mean temperature: 28.0 °C
• Maximum temperature anomaly: 2.3 °C
• Maximum temperature: 29.0 °C

Event center: -2.5°S 100.5°E

Area affected: 107991 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-25_to_2025-Aug-27_100.5_-2.5

Download data: JSON

Event type: Heat wave

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

• Indonesia

Duration: 10 days

Time span: August 24 2025 to September 02 2025

Statistics over entire affected area:

• Mean temperature anomaly: 1.2 °C
• Mean temperature: 28.5 °C
• Maximum temperature anomaly: 2.5 °C
• Maximum temperature: 30.0 °C

Event center: 5.5°N 95.5°E

Area affected: 129234 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-24_to_2025-Sep-02_95.5_5.5

Download data: JSON

Event type: Heat wave

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

• Indonesia

Duration: 7 days

Time span: July 07 2025 to July 13 2025

Statistics over entire affected area:

• Mean temperature anomaly: 0.8 °C
• Mean temperature: 28.0 °C
• Maximum temperature anomaly: 1.4 °C
• Maximum temperature: 28.6 °C

Event center: -3.5°S 111.5°E

Area affected: 95695 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-07_to_2025-Jul-13_111.5_-3.5

Download data: JSON

Event type: Heat wave

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

• Indonesia

Duration: 7 days

Time span: June 14 2025 to June 20 2025

Statistics over entire affected area:

• Mean temperature anomaly: 0.9 °C
• Mean temperature: 27.8 °C
• Maximum temperature anomaly: 1.4 °C
• Maximum temperature: 28.4 °C

Event center: -8.0°S 116.0°E

Area affected: 91948 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-14_to_2025-Jun-20_116.0_-8.0