Category: Extremes affecting Malaysia

Heat wave occuring from August 16 2025 to August 20 2025 at 3.0°N 101.0°E

Download data: JSON

Event type: Heat wave

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

  • Indonesia
  • Malaysia

Duration: 5 days

Time span: August 16 2025 to August 20 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.3 °C
  • Mean temperature: 28.5 °C
  • Maximum temperature anomaly: 2.5 °C
  • Maximum temperature: 29.4 °C

Event center: 3.0°N 101.0°E

Area affected: 83279 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-16_to_2025-Aug-20_101.0_3.0

Heat wave occuring from July 05 2025 to July 11 2025 at 3.0°N 104.0°E

Download data: JSON

Event type: Heat wave

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

  • Indonesia
  • Malaysia

Duration: 7 days

Time span: July 05 2025 to July 11 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.1 °C
  • Mean temperature: 28.8 °C
  • Maximum temperature anomaly: 1.9 °C
  • Maximum temperature: 29.3 °C

Event center: 3.0°N 104.0°E

Area affected: 166691 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-05_to_2025-Jul-11_104.0_3.0

Heat wave occuring from June 11 2025 to June 13 2025 at 4.0°N 103.5°E

Download data: JSON

Event type: Heat wave

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

  • Malaysia

Duration: 3 days

Time span: June 11 2025 to June 13 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 0.9 °C
  • Mean temperature: 29.0 °C
  • Maximum temperature anomaly: 1.1 °C
  • Maximum temperature: 29.3 °C

Event center: 4.0°N 103.5°E

Area affected: 58496 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-11_to_2025-Jun-13_103.5_4.0

Cold spell occuring from May 01 2025 to May 06 2025 at 8.5°N 102.5°E

Download data: JSON

Event type: Cold spell

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

  • Malaysia
  • Thailand

Duration: 6 days

Time span: May 01 2025 to May 06 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -1.2 °C
  • Mean temperature: 27.2 °C
  • Minimum temperature anomaly: -1.8 °C
  • Minimum temperature: 25.8 °C

Event center: 8.5°N 102.5°E

Area affected: 116174 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-May-01_to_2025-May-06_102.5_8.5

Heat wave occuring from April 27 2025 to May 11 2025 at -4.5°S 104.5°E

Download data: JSON

Event type: Heat wave

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

  • Brunei Darussalam
  • Indonesia
  • Malaysia

Duration: 15 days

Time span: April 27 2025 to May 11 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.2 °C
  • Mean temperature: 28.7 °C
  • Maximum temperature anomaly: 2.7 °C
  • Maximum temperature: 29.9 °C

Event center: -4.5°S 104.5°E

Area affected: 2716907 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-Apr-27_to_2025-May-11_104.5_-4.5

Cold spell occuring from March 18 2025 to March 23 2025 at -0.5°S 103.5°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: March 18 2025 to March 23 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -1.4 °C
  • Mean temperature: 25.7 °C
  • Minimum temperature anomaly: -3.2 °C
  • Minimum temperature: 23.5 °C

Event center: -0.5°S 103.5°E

Area affected: 80353 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-Mar-18_to_2025-Mar-23_103.5_-0.5

Cold spell occuring from January 28 2025 to February 01 2025 at 1.5°N 110.5°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: January 28 2025 to February 01 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -1.5 °C
  • Mean temperature: 24.0 °C
  • Minimum temperature anomaly: -2.1 °C
  • Minimum temperature: 21.0 °C

Event center: 1.5°N 110.5°E

Area affected: 64897 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-28_to_2025-Feb-01_110.5_1.5

Heat wave occuring from June 17 2024 to July 04 2024 at 6.0°N 103.5°E

Download data: JSON

Event type: Heat wave

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

  • Indonesia
  • Malaysia

Duration: 18 days

Time span: June 17 2024 to July 04 2024

Statistics over entire affected area:

  • Mean temperature anomaly: 1.0 °C
  • Mean temperature: 29.0 °C
  • Maximum temperature anomaly: 1.7 °C
  • Maximum temperature: 29.6 °C

Event center: 6.0°N 103.5°E

Area affected: 332582 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-Jun-17_to_2024-Jul-04_103.5_6.0

Heat wave occuring from November 27 2023 to December 03 2023 at 2.0°N 112.0°E

Download data: JSON

Event type: Heat wave

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

  • Indonesia
  • Malaysia

Duration: 7 days

Time span: November 27 2023 to December 03 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 1.3 °C
  • Mean temperature: 26.8 °C
  • Maximum temperature anomaly: 2.4 °C
  • Maximum temperature: 28.7 °C

Event center: 2.0°N 112.0°E

Area affected: 74095 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_2023-Nov-27_to_2023-Dec-03_112.0_2.0

Heat wave occuring from November 26 2023 to December 01 2023 at 6.5°N 116.5°E

Download data: JSON

Event type: Heat wave

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

  • Malaysia

Duration: 6 days

Time span: November 26 2023 to December 01 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 1.2 °C
  • Mean temperature: 27.3 °C
  • Maximum temperature anomaly: 1.9 °C
  • Maximum temperature: 28.8 °C

Event center: 6.5°N 116.5°E

Area affected: 89164 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_2023-Nov-26_to_2023-Dec-01_116.5_6.5