Category: Heat waves affecting Canada

Download data: JSON

Event type: Heat wave

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

• Canada

Duration: 5 days

Time span: June 25 2025 to June 29 2025

Statistics over entire affected area:

• Mean temperature anomaly: 1.2 °C
• Mean temperature: 1.9 °C
• Maximum temperature anomaly: 2.1 °C
• Maximum temperature: 3.2 °C

Event center: 73.5°N 214.5°E

Area affected: 596267 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-25_to_2025-Jun-29_214.5_73.5

Download data: JSON

Event type: Heat wave

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

• Canada

Duration: 3 days

Time span: June 24 2025 to June 26 2025

Statistics over entire affected area:

• Mean temperature anomaly: 0.6 °C
• Mean temperature: 1.4 °C
• Maximum temperature anomaly: 1.2 °C
• Maximum temperature: 2.0 °C

Event center: 82.5°N 228.0°E

Area affected: 205635 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-24_to_2025-Jun-26_228.0_82.5

Download data: JSON

Event type: Heat wave

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

• Canada

Duration: 11 days

Time span: June 15 2025 to June 25 2025

Statistics over entire affected area:

• Mean temperature anomaly: 3.5 °C
• Mean temperature: 14.2 °C
• Maximum temperature anomaly: 7.5 °C
• Maximum temperature: 21.8 °C

Event center: 49.5°N 305.0°E

Area affected: 527476 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-15_to_2025-Jun-25_305.0_49.5

Download data: JSON

Event type: Heat wave

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

• Canada

Duration: 3 days

Time span: June 11 2025 to June 13 2025

Statistics over entire affected area:

• Mean temperature anomaly: 2.3 °C
• Mean temperature: 12.0 °C
• Maximum temperature anomaly: 3.6 °C
• Maximum temperature: 14.5 °C

Event center: 44.5°N 298.5°E

Area affected: 59237 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-11_to_2025-Jun-13_298.5_44.5

Download data: JSON

Event type: Heat wave

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

• Canada

Duration: 4 days

Time span: June 08 2025 to June 11 2025

Statistics over entire affected area:

• Mean temperature anomaly: 5.2 °C
• Mean temperature: 5.8 °C
• Maximum temperature anomaly: 7.5 °C
• Maximum temperature: 8.4 °C

Event center: 70.0°N 258.5°E

Area affected: 58379 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-11_258.5_70.0

Download data: JSON

Event type: Heat wave

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

• Canada

Duration: 3 days

Time span: June 08 2025 to June 10 2025

Statistics over entire affected area:

• Mean temperature anomaly: 2.2 °C
• Mean temperature: 2.9 °C
• Maximum temperature anomaly: 6.1 °C
• Maximum temperature: 8.5 °C

Event center: 57.0°N 283.0°E

Area affected: 74059 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-10_283.0_57.0