Category: Heat waves affecting Switzerland

Download data: JSON

Event type: Heat wave

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

• Austria
• France
• Italy
• Switzerland

Duration: 10 days

Time span: April 24 2026 to May 03 2026

Statistics over entire affected area:

• Mean temperature anomaly: 4.1 °C
• Mean temperature: 11.4 °C
• Maximum temperature anomaly: 6.6 °C
• Maximum temperature: 20.4 °C

Event center: 46.5°N 7.5°E

Area affected: 110213 km$^2$

Fig. 1: unavailable since event is ongoing.

Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2026-Apr-24_to_2026-May-03_7.5_46.5

Download data: JSON

Event type: Heat wave

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

• Austria
• France
• Italy
• Switzerland

Duration: 6 days

Time span: February 08 2025 to February 13 2025

Statistics over entire affected area:

• Mean temperature anomaly: 5.4 °C
• Mean temperature: 2.0 °C
• Maximum temperature anomaly: 7.8 °C
• Maximum temperature: 11.2 °C

Event center: 45.5°N 6.0°E

Area affected: 84175 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-08_to_2025-Feb-13_6.0_45.5

Download data: JSON

Event type: Heat wave

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

• Austria
• France
• Italy
• Switzerland

Duration: 6 days

Time span: May 03 2023 to May 08 2023

Statistics over entire affected area:

• Mean temperature anomaly: 4.3 °C
• Mean temperature: 12.1 °C
• Maximum temperature anomaly: 5.7 °C
• Maximum temperature: 21.7 °C

Event center: 46.5°N 10.0°E

Area affected: 66771 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_2023-May-03_to_2023-May-08_10.0_46.5