Category: Heat waves affecting Mongolia

Heat wave occuring from November 27 2025 to November 30 2025 at 35.5°N 109.0°E

Download data: JSON

Event type: Heat wave

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

  • China
  • Mongolia

Duration: 4 days

Time span: November 27 2025 to November 30 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 6.0 °C
  • Mean temperature: 3.8 °C
  • Maximum temperature anomaly: 10.9 °C
  • Maximum temperature: 9.5 °C

Event center: 35.5°N 109.0°E

Area affected: 435077 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-Nov-27_to_2025-Nov-30_109.0_35.5

Heat wave occuring from November 25 2025 to November 29 2025 at 41.5°N 98.5°E

Download data: JSON

Event type: Heat wave

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

  • China
  • Mongolia

Duration: 5 days

Time span: November 25 2025 to November 29 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 7.2 °C
  • Mean temperature: 2.7 °C
  • Maximum temperature anomaly: 12.6 °C
  • Maximum temperature: 8.9 °C

Event center: 41.5°N 98.5°E

Area affected: 120867 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-Nov-25_to_2025-Nov-29_98.5_41.5

Heat wave occuring from November 17 2025 to November 28 2025 at 50.5°N 105.5°E

Download data: JSON

Event type: Heat wave

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

  • China
  • Mongolia
  • Russian Federation

Duration: 12 days

Time span: November 17 2025 to November 28 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 10.9 °C
  • Mean temperature: -5.0 °C
  • Maximum temperature anomaly: 18.8 °C
  • Maximum temperature: 4.9 °C

Event center: 50.5°N 105.5°E

Area affected: 582941 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-Nov-17_to_2025-Nov-28_105.5_50.5

Heat wave occuring from September 10 2025 to September 12 2025 at 43.0°N 112.0°E

Download data: JSON

Event type: Heat wave

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

  • China
  • Mongolia

Duration: 3 days

Time span: September 10 2025 to September 12 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 5.7 °C
  • Mean temperature: 21.9 °C
  • Maximum temperature anomaly: 7.2 °C
  • Maximum temperature: 24.1 °C

Event center: 43.0°N 112.0°E

Area affected: 68109 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-10_to_2025-Sep-12_112.0_43.0

Heat wave occuring from June 11 2025 to June 14 2025 at 49.0°N 87.0°E

Download data: JSON

Event type: Heat wave

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

  • China
  • Kazakhstan
  • Mongolia
  • Russian Federation

Duration: 4 days

Time span: June 11 2025 to June 14 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 5.6 °C
  • Mean temperature: 15.3 °C
  • Maximum temperature anomaly: 8.2 °C
  • Maximum temperature: 21.2 °C

Event center: 49.0°N 87.0°E

Area affected: 50471 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-14_87.0_49.0

Heat wave occuring from May 16 2025 to June 23 2025 at 62.5°N 164.5°E

Download data: JSON

Event type: Heat wave

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

  • China
  • Mongolia
  • Russian Federation

Duration: 39 days

Time span: May 16 2025 to June 23 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 7.9 °C
  • Mean temperature: 14.3 °C
  • Maximum temperature anomaly: 17.9 °C
  • Maximum temperature: 27.8 °C

Event center: 62.5°N 164.5°E

Area affected: 5092485 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-16_to_2025-Jun-23_164.5_62.5

Heat wave occuring from May 09 2025 to May 12 2025 at 52.0°N 106.0°E

Download data: JSON

Event type: Heat wave

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

  • Mongolia
  • Russian Federation

Duration: 4 days

Time span: May 09 2025 to May 12 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 7.5 °C
  • Mean temperature: 13.1 °C
  • Maximum temperature anomaly: 11.9 °C
  • Maximum temperature: 21.2 °C

Event center: 52.0°N 106.0°E

Area affected: 406185 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-09_to_2025-May-12_106.0_52.0

Heat wave occuring from March 20 2025 to March 24 2025 at 45.0°N 91.5°E

Download data: JSON

Event type: Heat wave

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

  • China
  • Mongolia

Duration: 5 days

Time span: March 20 2025 to March 24 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 8.0 °C
  • Mean temperature: 9.1 °C
  • Maximum temperature anomaly: 11.5 °C
  • Maximum temperature: 18.2 °C

Event center: 45.0°N 91.5°E

Area affected: 85882 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-20_to_2025-Mar-24_91.5_45.0

Heat wave occuring from March 08 2025 to March 10 2025 at 40.0°N 101.5°E

Download data: JSON

Event type: Heat wave

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

  • China
  • Mongolia

Duration: 3 days

Time span: March 08 2025 to March 10 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 6.9 °C
  • Mean temperature: 8.8 °C
  • Maximum temperature anomaly: 7.7 °C
  • Maximum temperature: 10.7 °C

Event center: 40.0°N 101.5°E

Area affected: 63158 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-08_to_2025-Mar-10_101.5_40.0

Heat wave occuring from March 08 2025 to March 14 2025 at 42.0°N 141.5°E

Download data: JSON

Event type: Heat wave

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

  • China
  • Japan
  • Korea, Democratic People’s Republic of
  • Mongolia
  • Russian Federation

Duration: 7 days

Time span: March 08 2025 to March 14 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 7.3 °C
  • Mean temperature: 3.7 °C
  • Maximum temperature anomaly: 15.9 °C
  • Maximum temperature: 15.1 °C

Event center: 42.0°N 141.5°E

Area affected: 3063166 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-08_to_2025-Mar-14_141.5_42.0