Category: Extremes affecting China

Cold spell occuring from November 18 2025 to December 03 2025 at 19.0°N 100.5°E

Download data: JSON

Event type: Cold spell

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

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

Duration: 16 days

Time span: November 18 2025 to December 03 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -3.2 °C
  • Mean temperature: 19.6 °C
  • Minimum temperature anomaly: -7.6 °C
  • Minimum temperature: 5.9 °C

Event center: 19.0°N 100.5°E

Area affected: 2098929 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-18_to_2025-Dec-03_100.5_19.0

Cold spell occuring from November 18 2025 to November 21 2025 at 18.5°N 108.5°E

Download data: JSON

Event type: Cold spell

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

  • China
  • Hong Kong

Duration: 4 days

Time span: November 18 2025 to November 21 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -4.3 °C
  • Mean temperature: 17.1 °C
  • Minimum temperature anomaly: -7.9 °C
  • Minimum temperature: 5.9 °C

Event center: 18.5°N 108.5°E

Area affected: 419509 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-18_to_2025-Nov-21_108.5_18.5

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

Cold spell occuring from November 17 2025 to November 20 2025 at 31.5°N 109.0°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: November 17 2025 to November 20 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -5.0 °C
  • Mean temperature: 3.8 °C
  • Minimum temperature anomaly: -10.4 °C
  • Minimum temperature: -7.8 °C

Event center: 31.5°N 109.0°E

Area affected: 107578 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-17_to_2025-Nov-20_109.0_31.5

Cold spell occuring from November 17 2025 to November 20 2025 at 28.5°N 122.0°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: November 17 2025 to November 20 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -5.2 °C
  • Mean temperature: 7.2 °C
  • Minimum temperature anomaly: -7.0 °C
  • Minimum temperature: 3.1 °C

Event center: 28.5°N 122.0°E

Area affected: 218256 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-17_to_2025-Nov-20_122.0_28.5

Cold spell occuring from November 15 2025 to November 19 2025 at 42.5°N 100.5°E

Download data: JSON

Event type: Cold spell

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

  • China
  • Mongolia

Duration: 5 days

Time span: November 15 2025 to November 19 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -7.2 °C
  • Mean temperature: -8.5 °C
  • Minimum temperature anomaly: -12.3 °C
  • Minimum temperature: -22.6 °C

Event center: 42.5°N 100.5°E

Area affected: 444382 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-15_to_2025-Nov-19_100.5_42.5

Cold spell occuring from November 06 2025 to December 18 2025 at 30.5°N 87.0°E

Download data: JSON

Event type: Cold spell

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

  • China
  • Nepal

Duration: 43 days

Time span: November 06 2025 to December 18 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -7.6 °C
  • Mean temperature: -15.9 °C
  • Minimum temperature anomaly: -16.2 °C
  • Minimum temperature: -23.8 °C

Event center: 30.5°N 87.0°E

Area affected: 231712 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-06_to_2025-Dec-18_87.0_30.5

Cold spell occuring from November 05 2025 to November 12 2025 at 42.0°N 80.5°E

Download data: JSON

Event type: Cold spell

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

  • China
  • Kazakhstan

Duration: 8 days

Time span: November 05 2025 to November 12 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -4.7 °C
  • Mean temperature: -1.1 °C
  • Minimum temperature anomaly: -11.0 °C
  • Minimum temperature: -23.0 °C

Event center: 42.0°N 80.5°E

Area affected: 346373 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-05_to_2025-Nov-12_80.5_42.0

Cold spell occuring from November 04 2025 to November 10 2025 at 40.5°N 73.5°E

Download data: JSON

Event type: Cold spell

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

  • China
  • Kazakhstan
  • Kyrgyzstan
  • Tajikistan
  • Uzbekistan

Duration: 7 days

Time span: November 04 2025 to November 10 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -7.8 °C
  • Mean temperature: -4.1 °C
  • Minimum temperature anomaly: -15.7 °C
  • Minimum temperature: -18.2 °C

Event center: 40.5°N 73.5°E

Area affected: 143929 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-04_to_2025-Nov-10_73.5_40.5

Heat wave occuring from November 03 2025 to November 06 2025 at 40.0°N 107.0°E

Download data: JSON

Event type: Heat wave

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

  • China

Duration: 4 days

Time span: November 03 2025 to November 06 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 5.5 °C
  • Mean temperature: 7.5 °C
  • Maximum temperature anomaly: 8.1 °C
  • Maximum temperature: 12.1 °C

Event center: 40.0°N 107.0°E

Area affected: 152358 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-03_to_2025-Nov-06_107.0_40.0