Category: Heat waves affecting Sweden

Download data: JSON

Event type: Heat wave

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

• Norway
• Sweden

Duration: 12 days

Time span: March 03 2026 to March 14 2026

Statistics over entire affected area:

• Mean temperature anomaly: 5.4 °C
• Mean temperature: 1.8 °C
• Maximum temperature anomaly: 7.2 °C
• Maximum temperature: 5.1 °C

Event center: 60.0°N 8.5°E

Area affected: 68125 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-Mar-03_to_2026-Mar-14_8.5_60.0

Download data: JSON

Event type: Heat wave

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

• Norway
• Sweden

Duration: 7 days

Time span: October 21 2025 to October 27 2025

Statistics over entire affected area:

• Mean temperature anomaly: 5.9 °C
• Mean temperature: 6.8 °C
• Maximum temperature anomaly: 8.8 °C
• Maximum temperature: 10.4 °C

Event center: 64.0°N 20.0°E

Area affected: 315305 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-Oct-21_to_2025-Oct-27_20.0_64.0

Download data: JSON

Event type: Heat wave

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

• Norway
• Sweden

Duration: 6 days

Time span: October 10 2025 to October 15 2025

Statistics over entire affected area:

• Mean temperature anomaly: 3.7 °C
• Mean temperature: 10.3 °C
• Maximum temperature anomaly: 6.7 °C
• Maximum temperature: 14.4 °C

Event center: 61.0°N 9.0°E

Area affected: 91298 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-Oct-10_to_2025-Oct-15_9.0_61.0

Download data: JSON

Event type: Heat wave

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

• Norway
• Sweden

Duration: 5 days

Time span: June 13 2025 to June 17 2025

Statistics over entire affected area:

• Mean temperature anomaly: 4.4 °C
• Mean temperature: 14.0 °C
• Maximum temperature anomaly: 9.6 °C
• Maximum temperature: 19.6 °C

Event center: 63.5°N 13.0°E

Area affected: 338440 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-13_to_2025-Jun-17_13.0_63.5