Category: Extremes affecting Nepal

Cold spell occuring from September 23 2025 to October 20 2025 at 32.0°N 78.5°E

Download data: JSON

Event type: Cold spell

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

  • Afghanistan
  • China
  • India
  • Nepal
  • Pakistan

Duration: 28 days

Time span: September 23 2025 to October 20 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -3.3 °C
  • Mean temperature: 20.2 °C
  • Minimum temperature anomaly: -13.8 °C
  • Minimum temperature: -21.8 °C

Event center: 32.0°N 78.5°E

Area affected: 2700912 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-23_to_2025-Oct-20_78.5_32.0

Heat wave occuring from August 11 2025 to August 30 2025 at 28.0°N 87.0°E

Download data: JSON

Event type: Heat wave

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

  • Bangladesh
  • Bhutan
  • China
  • India
  • Nepal

Duration: 20 days

Time span: August 11 2025 to August 30 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.8 °C
  • Mean temperature: 14.8 °C
  • Maximum temperature anomaly: 3.5 °C
  • Maximum temperature: 32.2 °C

Event center: 28.0°N 87.0°E

Area affected: 383708 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-11_to_2025-Aug-30_87.0_28.0

Cold spell occuring from August 03 2025 to August 06 2025 at 28.0°N 82.0°E

Download data: JSON

Event type: Cold spell

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

  • India
  • Nepal

Duration: 4 days

Time span: August 03 2025 to August 06 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -2.4 °C
  • Mean temperature: 26.8 °C
  • Minimum temperature anomaly: -3.5 °C
  • Minimum temperature: 21.7 °C

Event center: 28.0°N 82.0°E

Area affected: 126531 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-Aug-03_to_2025-Aug-06_82.0_28.0

Heat wave occuring from June 08 2025 to June 13 2025 at 27.0°N 81.5°E

Download data: JSON

Event type: Heat wave

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

  • India
  • Nepal

Duration: 6 days

Time span: June 08 2025 to June 13 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 3.5 °C
  • Mean temperature: 37.3 °C
  • Maximum temperature anomaly: 4.2 °C
  • Maximum temperature: 39.3 °C

Event center: 27.0°N 81.5°E

Area affected: 96826 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-08_to_2025-Jun-13_81.5_27.0

Cold spell occuring from May 30 2025 to June 11 2025 at 29.5°N 85.5°E

Download data: JSON

Event type: Cold spell

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

  • Bhutan
  • China
  • Nepal

Duration: 13 days

Time span: May 30 2025 to June 11 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -5.0 °C
  • Mean temperature: -2.6 °C
  • Minimum temperature anomaly: -11.4 °C
  • Minimum temperature: -14.6 °C

Event center: 29.5°N 85.5°E

Area affected: 711396 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-30_to_2025-Jun-11_85.5_29.5

Heat wave occuring from May 07 2025 to May 16 2025 at 22.5°N 91.5°E

Download data: JSON

Event type: Heat wave

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

  • Bangladesh
  • India
  • Myanmar
  • Nepal

Duration: 10 days

Time span: May 07 2025 to May 16 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.8 °C
  • Mean temperature: 30.6 °C
  • Maximum temperature anomaly: 4.6 °C
  • Maximum temperature: 34.6 °C

Event center: 22.5°N 91.5°E

Area affected: 332451 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-07_to_2025-May-16_91.5_22.5

Cold spell occuring from April 27 2025 to June 06 2025 at 19.0°N 77.0°E

Download data: JSON

Event type: Cold spell

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

  • Bangladesh
  • India
  • Nepal
  • Pakistan

Duration: 41 days

Time span: April 27 2025 to June 06 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -4.0 °C
  • Mean temperature: 28.3 °C
  • Minimum temperature anomaly: -10.5 °C
  • Minimum temperature: 3.7 °C

Event center: 19.0°N 77.0°E

Area affected: 2908597 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-Apr-27_to_2025-Jun-06_77.0_19.0

Heat wave occuring from February 25 2025 to March 21 2025 at 28.0°N 89.0°E

Download data: JSON

Event type: Heat wave

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

  • Bhutan
  • China
  • India
  • Nepal

Duration: 25 days

Time span: February 25 2025 to March 21 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 5.2 °C
  • Mean temperature: -5.3 °C
  • Maximum temperature anomaly: 9.3 °C
  • Maximum temperature: 27.5 °C

Event center: 28.0°N 89.0°E

Area affected: 793230 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-25_to_2025-Mar-21_89.0_28.0

Heat wave occuring from December 11 2024 to December 20 2024 at 28.5°N 89.5°E

Download data: JSON

Event type: Heat wave

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

  • Bhutan
  • China
  • India
  • Nepal

Duration: 10 days

Time span: December 11 2024 to December 20 2024

Statistics over entire affected area:

  • Mean temperature anomaly: 5.1 °C
  • Mean temperature: -2.8 °C
  • Maximum temperature anomaly: 9.3 °C
  • Maximum temperature: 15.0 °C

Event center: 28.5°N 89.5°E

Area affected: 124584 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-Dec-11_to_2024-Dec-20_89.5_28.5

Cold spell occuring from December 07 2024 to December 14 2024 at 28.0°N 83.0°E

Download data: JSON

Event type: Cold spell

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

  • India
  • Nepal

Duration: 8 days

Time span: December 07 2024 to December 14 2024

Statistics over entire affected area:

  • Mean temperature anomaly: -2.3 °C
  • Mean temperature: 13.3 °C
  • Minimum temperature anomaly: -4.1 °C
  • Minimum temperature: 6.9 °C

Event center: 28.0°N 83.0°E

Area affected: 63016 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_2024-Dec-07_to_2024-Dec-14_83.0_28.0