Category: Extremes affecting China

Cold spell occuring from November 02 2025 to November 04 2025 at 24.5°N 104.5°E

Download data: JSON

Event type: Cold spell

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

  • China

Duration: 3 days

Time span: November 02 2025 to November 04 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -3.7 °C
  • Mean temperature: 14.1 °C
  • Minimum temperature anomaly: -5.1 °C
  • Minimum temperature: 10.5 °C

Event center: 24.5°N 104.5°E

Area affected: 73138 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-Nov-02_to_2025-Nov-04_104.5_24.5

Heat wave occuring from October 27 2025 to November 05 2025 at 32.0°N 83.0°E

Download data: JSON

Event type: Heat wave

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

  • China

Duration: 10 days

Time span: October 27 2025 to November 05 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 4.5 °C
  • Mean temperature: -2.9 °C
  • Maximum temperature anomaly: 7.1 °C
  • Maximum temperature: 1.5 °C

Event center: 32.0°N 83.0°E

Area affected: 96008 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-27_to_2025-Nov-05_83.0_32.0

Heat wave occuring from October 26 2025 to November 04 2025 at 43.0°N 87.0°E

Download data: JSON

Event type: Heat wave

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

  • China

Duration: 10 days

Time span: October 26 2025 to November 04 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 4.1 °C
  • Mean temperature: 6.4 °C
  • Maximum temperature anomaly: 7.7 °C
  • Maximum temperature: 14.2 °C

Event center: 43.0°N 87.0°E

Area affected: 227754 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-26_to_2025-Nov-04_87.0_43.0

Heat wave occuring from October 26 2025 to November 22 2025 at 32.0°N 92.5°E

Download data: JSON

Event type: Heat wave

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

  • China

Duration: 28 days

Time span: October 26 2025 to November 22 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 6.8 °C
  • Mean temperature: -3.6 °C
  • Maximum temperature anomaly: 12.7 °C
  • Maximum temperature: 7.5 °C

Event center: 32.0°N 92.5°E

Area affected: 529524 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-26_to_2025-Nov-22_92.5_32.0

Heat wave occuring from October 17 2025 to October 23 2025 at 34.0°N 94.5°E

Download data: JSON

Event type: Heat wave

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

  • China

Duration: 7 days

Time span: October 17 2025 to October 23 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 5.5 °C
  • Mean temperature: -3.3 °C
  • Maximum temperature anomaly: 10.6 °C
  • Maximum temperature: 5.0 °C

Event center: 34.0°N 94.5°E

Area affected: 468448 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-17_to_2025-Oct-23_94.5_34.0

Cold spell occuring from October 08 2025 to October 11 2025 at 37.0°N 115.0°E

Download data: JSON

Event type: Cold spell

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

  • China

Duration: 4 days

Time span: October 08 2025 to October 11 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -5.9 °C
  • Mean temperature: 10.0 °C
  • Minimum temperature anomaly: -8.3 °C
  • Minimum temperature: 4.4 °C

Event center: 37.0°N 115.0°E

Area affected: 126103 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-Oct-08_to_2025-Oct-11_115.0_37.0

Cold spell occuring from October 05 2025 to October 15 2025 at 29.0°N 86.0°E

Download data: JSON

Event type: Cold spell

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

  • Bhutan
  • China
  • Nepal

Duration: 11 days

Time span: October 05 2025 to October 15 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -4.9 °C
  • Mean temperature: -4.3 °C
  • Minimum temperature anomaly: -10.1 °C
  • Minimum temperature: -14.0 °C

Event center: 29.0°N 86.0°E

Area affected: 137595 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-Oct-05_to_2025-Oct-15_86.0_29.0

Cold spell occuring from September 30 2025 to November 04 2025 at 50.0°N 100.0°E

Download data: JSON

Event type: Cold spell

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

  • China
  • Hong Kong
  • Japan
  • Kazakhstan
  • Korea, Democratic People’s Republic of
  • Lao People’s Democratic Republic
  • Mongolia
  • Russian Federation
  • United States
  • Viet Nam

Duration: 36 days

Time span: September 30 2025 to November 04 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -5.8 °C
  • Mean temperature: -1.0 °C
  • Minimum temperature anomaly: -23.4 °C
  • Minimum temperature: -32.6 °C

Event center: 50.0°N 100.0°E

Area affected: 19274293 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-Sep-30_to_2025-Nov-04_100.0_50.0

Heat wave occuring from September 30 2025 to October 04 2025 at 39.0°N 96.0°E

Download data: JSON

Event type: Heat wave

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

  • China

Duration: 5 days

Time span: September 30 2025 to October 04 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 5.3 °C
  • Mean temperature: 5.0 °C
  • Maximum temperature anomaly: 7.9 °C
  • Maximum temperature: 19.8 °C

Event center: 39.0°N 96.0°E

Area affected: 82225 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-30_to_2025-Oct-04_96.0_39.0

Heat wave occuring from September 28 2025 to October 03 2025 at 39.5°N 76.5°E

Download data: JSON

Event type: Heat wave

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

  • China

Duration: 6 days

Time span: September 28 2025 to October 03 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 3.6 °C
  • Mean temperature: 18.6 °C
  • Maximum temperature anomaly: 5.7 °C
  • Maximum temperature: 23.5 °C

Event center: 39.5°N 76.5°E

Area affected: 80380 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-28_to_2025-Oct-03_76.5_39.5