Category: Extremes affecting Thailand

Heat wave occuring from May 17 2025 to May 22 2025 at 15.5°N 97.5°E

Download data: JSON

Event type: Heat wave

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

  • Myanmar
  • Thailand

Duration: 6 days

Time span: May 17 2025 to May 22 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.5 °C
  • Mean temperature: 29.1 °C
  • Maximum temperature anomaly: 3.2 °C
  • Maximum temperature: 30.3 °C

Event center: 15.5°N 97.5°E

Area affected: 195089 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-May-17_to_2025-May-22_97.5_15.5

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 22 2025 to April 27 2025 at 20.0°N 100.0°E

Download data: JSON

Event type: Heat wave

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

  • China
  • Lao People’s Democratic Republic
  • Myanmar
  • Thailand

Duration: 6 days

Time span: April 22 2025 to April 27 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 2.7 °C
  • Mean temperature: 29.4 °C
  • Maximum temperature anomaly: 3.5 °C
  • Maximum temperature: 35.2 °C

Event center: 20.0°N 100.0°E

Area affected: 72674 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-22_to_2025-Apr-27_100.0_20.0

Cold spell occuring from March 25 2025 to April 09 2025 at 19.0°N 114.0°E

Download data: JSON

Event type: Cold spell

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

  • China
  • Hong Kong
  • Kazakhstan
  • Kyrgyzstan
  • Lao People’s Democratic Republic
  • Mongolia
  • Russian Federation
  • Taiwan, Province of China
  • Tajikistan
  • Thailand
  • Viet Nam

Duration: 16 days

Time span: March 25 2025 to April 09 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -6.8 °C
  • Mean temperature: 6.8 °C
  • Minimum temperature anomaly: -14.5 °C
  • Minimum temperature: -25.8 °C

Event center: 19.0°N 114.0°E

Area affected: 6372090 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-25_to_2025-Apr-09_114.0_19.0

Heat wave occuring from March 24 2025 to March 29 2025 at 19.0°N 103.5°E

Download data: JSON

Event type: Heat wave

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

  • Cambodia
  • Lao People’s Democratic Republic
  • Thailand
  • Viet Nam

Duration: 6 days

Time span: March 24 2025 to March 29 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 3.8 °C
  • Mean temperature: 27.6 °C
  • Maximum temperature anomaly: 5.8 °C
  • Maximum temperature: 32.2 °C

Event center: 19.0°N 103.5°E

Area affected: 147274 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-Mar-24_to_2025-Mar-29_103.5_19.0

Cold spell occuring from March 13 2025 to March 28 2025 at 30.0°N 100.5°E

Download data: JSON

Event type: Cold spell

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

  • Cambodia
  • China
  • Japan
  • Korea, Democratic People’s Republic of
  • Korea, Republic of
  • Lao People’s Democratic Republic
  • Myanmar
  • Philippines
  • Taiwan, Province of China
  • Thailand
  • Viet Nam

Duration: 16 days

Time span: March 13 2025 to March 28 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -3.6 °C
  • Mean temperature: 16.5 °C
  • Minimum temperature anomaly: -16.5 °C
  • Minimum temperature: -24.1 °C

Event center: 30.0°N 100.5°E

Area affected: 6868993 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-13_to_2025-Mar-28_100.5_30.0

Cold spell occuring from February 24 2025 to February 26 2025 at 15.5°N 100.5°E

Download data: JSON

Event type: Cold spell

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

  • Thailand

Duration: 3 days

Time span: February 24 2025 to February 26 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -3.7 °C
  • Mean temperature: 23.5 °C
  • Minimum temperature anomaly: -7.2 °C
  • Minimum temperature: 17.6 °C

Event center: 15.5°N 100.5°E

Area affected: 110287 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-24_to_2025-Feb-26_100.5_15.5

Heat wave occuring from February 03 2025 to February 12 2025 at 20.5°N 97.0°E

Download data: JSON

Event type: Heat wave

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

  • China
  • Myanmar
  • Thailand

Duration: 10 days

Time span: February 03 2025 to February 12 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 2.5 °C
  • Mean temperature: 22.0 °C
  • Maximum temperature anomaly: 3.7 °C
  • Maximum temperature: 27.2 °C

Event center: 20.5°N 97.0°E

Area affected: 205354 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-Feb-03_to_2025-Feb-12_97.0_20.5

Cold spell occuring from January 27 2025 to January 31 2025 at 14.0°N 106.5°E

Download data: JSON

Event type: Cold spell

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

  • Cambodia
  • Lao People’s Democratic Republic
  • Myanmar
  • Thailand
  • Viet Nam

Duration: 5 days

Time span: January 27 2025 to January 31 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -3.0 °C
  • Mean temperature: 22.0 °C
  • Minimum temperature anomaly: -5.1 °C
  • Minimum temperature: 11.1 °C

Event center: 14.0°N 106.5°E

Area affected: 576436 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-27_to_2025-Jan-31_106.5_14.0

Cold spell occuring from January 10 2025 to January 16 2025 at 19.5°N 102.5°E

Download data: JSON

Event type: Cold spell

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

  • Cambodia
  • China
  • Lao People’s Democratic Republic
  • Myanmar
  • Thailand
  • Viet Nam

Duration: 7 days

Time span: January 10 2025 to January 16 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -3.9 °C
  • Mean temperature: 18.8 °C
  • Minimum temperature anomaly: -7.1 °C
  • Minimum temperature: 8.9 °C

Event center: 19.5°N 102.5°E

Area affected: 784342 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-10_to_2025-Jan-16_102.5_19.5