Category: Heat waves affecting Canada

Heat wave occuring from January 08 2026 to January 26 2026 at 62.0°N 216.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 19 days

Time span: January 08 2026 to January 26 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 9.5 °C
  • Mean temperature: 5.1 °C
  • Maximum temperature anomaly: 23.1 °C
  • Maximum temperature: 23.0 °C

Event center: 62.0°N 216.0°E

Area affected: 6054362 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-Jan-08_to_2026-Jan-26_216.0_62.0

Heat wave occuring from January 07 2026 to January 09 2026 at 50.5°N 282.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada

Duration: 3 days

Time span: January 07 2026 to January 09 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 14.0 °C
  • Mean temperature: -2.7 °C
  • Maximum temperature anomaly: 17.2 °C
  • Maximum temperature: -0.3 °C

Event center: 50.5°N 282.5°E

Area affected: 57490 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-Jan-07_to_2026-Jan-09_282.5_50.5

Heat wave occuring from February 25 2026 to March 04 2026 at 49.0°N 240.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 8 days

Time span: February 25 2026 to March 04 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 6.5 °C
  • Mean temperature: 4.3 °C
  • Maximum temperature anomaly: 9.1 °C
  • Maximum temperature: 7.0 °C

Event center: 49.0°N 240.5°E

Area affected: 64825 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-Feb-25_to_2026-Mar-04_240.5_49.0

Heat wave occuring from February 18 2026 to February 22 2026 at 51.5°N 306.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada

Duration: 5 days

Time span: February 18 2026 to February 22 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 8.2 °C
  • Mean temperature: 0.5 °C
  • Maximum temperature anomaly: 11.6 °C
  • Maximum temperature: 3.2 °C

Event center: 51.5°N 306.5°E

Area affected: 119007 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-Feb-18_to_2026-Feb-22_306.5_51.5

Heat wave occuring from January 29 2026 to February 02 2026 at 66.5°N 257.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada

Duration: 5 days

Time span: January 29 2026 to February 02 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 9.3 °C
  • Mean temperature: -23.3 °C
  • Maximum temperature anomaly: 12.9 °C
  • Maximum temperature: -20.0 °C

Event center: 66.5°N 257.5°E

Area affected: 84072 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-Jan-29_to_2026-Feb-02_257.5_66.5

Heat wave occuring from January 28 2026 to January 31 2026 at 86.5°N 223.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada

Duration: 4 days

Time span: January 28 2026 to January 31 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 7.1 °C
  • Mean temperature: -19.2 °C
  • Maximum temperature anomaly: 8.7 °C
  • Maximum temperature: -17.6 °C

Event center: 86.5°N 223.5°E

Area affected: 65989 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-Jan-28_to_2026-Jan-31_223.5_86.5

Heat wave occuring from January 08 2026 to February 05 2026 at 58.0°N 142.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • Russian Federation
  • Svalbard and Jan Mayen
  • United States

Duration: 29 days

Time span: January 08 2026 to February 05 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 11.4 °C
  • Mean temperature: -10.1 °C
  • Maximum temperature anomaly: 32.3 °C
  • Maximum temperature: 17.2 °C

Event center: 58.0°N 142.5°E

Area affected: 11950817 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-Jan-08_to_2026-Feb-05_142.5_58.0

Heat wave occuring from December 28 2025 to January 03 2026 at 55.0°N 234.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 7 days

Time span: December 28 2025 to January 03 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 7.2 °C
  • Mean temperature: 4.0 °C
  • Maximum temperature anomaly: 15.6 °C
  • Maximum temperature: 10.3 °C

Event center: 55.0°N 234.0°E

Area affected: 429433 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-Dec-28_to_2026-Jan-03_234.0_55.0

Heat wave occuring from November 22 2025 to November 24 2025 at 49.0°N 262.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 3 days

Time span: November 22 2025 to November 24 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 8.1 °C
  • Mean temperature: 3.2 °C
  • Maximum temperature anomaly: 11.2 °C
  • Maximum temperature: 7.1 °C

Event center: 49.0°N 262.0°E

Area affected: 208931 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-22_to_2025-Nov-24_262.0_49.0

Heat wave occuring from November 20 2025 to November 24 2025 at 50.5°N 242.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 5 days

Time span: November 20 2025 to November 24 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 6.2 °C
  • Mean temperature: 1.8 °C
  • Maximum temperature anomaly: 8.1 °C
  • Maximum temperature: 5.7 °C

Event center: 50.5°N 242.0°E

Area affected: 95936 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-20_to_2025-Nov-24_242.0_50.5