Author: WEXA

Heat wave occuring from May 23 2026 to June 21 2026 at 64.5°N 179.5°E

Download data: JSON

Event type: Heat wave

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

  • Russian Federation

Duration: 30 days

Time span: May 23 2026 to June 21 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 7.0 °C
  • Mean temperature: 12.0 °C
  • Maximum temperature anomaly: 15.8 °C
  • Maximum temperature: 21.8 °C

Event center: 64.5°N 179.5°E

Area affected: 2530830 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_2026-May-23_to_2026-Jun-21_179.5_64.5

Cold spell occuring from May 22 2026 to May 26 2026 at 3.0°N 289.5°E

Download data: JSON

Event type: Cold spell

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

  • Colombia

Duration: 5 days

Time span: May 22 2026 to May 26 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -1.5 °C
  • Mean temperature: 23.6 °C
  • Minimum temperature anomaly: -2.3 °C
  • Minimum temperature: 22.5 °C

Event center: 3.0°N 289.5°E

Area affected: 151155 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_2026-May-22_to_2026-May-26_289.5_3.0

Cold spell occuring from May 22 2026 to May 24 2026 at -32.5°S 118.5°E

Download data: JSON

Event type: Cold spell

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

  • Australia

Duration: 3 days

Time span: May 22 2026 to May 24 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -3.9 °C
  • Mean temperature: 9.0 °C
  • Minimum temperature anomaly: -6.1 °C
  • Minimum temperature: 6.9 °C

Event center: -32.5°S 118.5°E

Area affected: 96026 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_2026-May-22_to_2026-May-24_118.5_-32.5

Heat wave occuring from May 22 2026 to June 04 2026 at 69.0°N 61.5°E

Download data: JSON

Event type: Heat wave

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

  • Kazakhstan
  • Russian Federation

Duration: 14 days

Time span: May 22 2026 to June 04 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 8.5 °C
  • Mean temperature: 15.7 °C
  • Maximum temperature anomaly: 18.3 °C
  • Maximum temperature: 24.9 °C

Event center: 69.0°N 61.5°E

Area affected: 1890895 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_2026-May-22_to_2026-Jun-04_61.5_69.0

Heat wave occuring from May 22 2026 to May 24 2026 at 7.0°N 15.0°E

Download data: JSON

Event type: Heat wave

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

  • Cameroon
  • Central African Republic
  • Chad

Duration: 3 days

Time span: May 22 2026 to May 24 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 2.0 °C
  • Mean temperature: 26.6 °C
  • Maximum temperature anomaly: 3.7 °C
  • Maximum temperature: 32.2 °C

Event center: 7.0°N 15.0°E

Area affected: 98262 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_2026-May-22_to_2026-May-24_15.0_7.0

Heat wave occuring from May 22 2026 to May 26 2026 at -79.5°S 109.5°E

Download data: JSON

Event type: Heat wave

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

  • Antarctica

Duration: 5 days

Time span: May 22 2026 to May 26 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 8.7 °C
  • Mean temperature: -42.9 °C
  • Maximum temperature anomaly: 12.5 °C
  • Maximum temperature: -31.0 °C

Event center: -79.5°S 109.5°E

Area affected: 400157 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_2026-May-22_to_2026-May-26_109.5_-79.5

Cold spell occuring from May 21 2026 to May 24 2026 at 57.0°N 88.0°E

Download data: JSON

Event type: Cold spell

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

  • Russian Federation

Duration: 4 days

Time span: May 21 2026 to May 24 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -8.3 °C
  • Mean temperature: 1.9 °C
  • Minimum temperature anomaly: -11.6 °C
  • Minimum temperature: -2.9 °C

Event center: 57.0°N 88.0°E

Area affected: 470690 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_2026-May-21_to_2026-May-24_88.0_57.0

Cold spell occuring from May 21 2026 to June 03 2026 at 25.5°N 8.5°E

Download data: JSON

Event type: Cold spell

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

  • Algeria
  • Libya

Duration: 14 days

Time span: May 21 2026 to June 03 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -5.3 °C
  • Mean temperature: 25.4 °C
  • Minimum temperature anomaly: -9.8 °C
  • Minimum temperature: 19.8 °C

Event center: 25.5°N 8.5°E

Area affected: 463691 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_2026-May-21_to_2026-Jun-03_8.5_25.5

Cold spell occuring from May 20 2026 to May 31 2026 at 24.0°N 25.0°E

Download data: JSON

Event type: Cold spell

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

  • Chad
  • Egypt
  • Libya
  • Sudan

Duration: 12 days

Time span: May 20 2026 to May 31 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -4.3 °C
  • Mean temperature: 25.8 °C
  • Minimum temperature anomaly: -6.7 °C
  • Minimum temperature: 20.4 °C

Event center: 24.0°N 25.0°E

Area affected: 1296491 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_2026-May-20_to_2026-May-31_25.0_24.0

Heat wave occuring from May 20 2026 to May 26 2026 at -8.0°S 118.5°E

Download data: JSON

Event type: Heat wave

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

  • Indonesia

Duration: 7 days

Time span: May 20 2026 to May 26 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 0.9 °C
  • Mean temperature: 28.0 °C
  • Maximum temperature anomaly: 1.6 °C
  • Maximum temperature: 29.1 °C

Event center: -8.0°S 118.5°E

Area affected: 91548 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_2026-May-20_to_2026-May-26_118.5_-8.0