Category: Heat waves affecting Sri Lanka

Download data: JSON

Event type: Heat wave

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

• Sri Lanka

Duration: 5 days

Time span: November 30 2025 to December 04 2025

Statistics over entire affected area:

• Mean temperature anomaly: 1.0 °C
• Mean temperature: 27.0 °C
• Maximum temperature anomaly: 1.9 °C
• Maximum temperature: 27.8 °C

Event center: 7.0°N 81.5°E

Area affected: 94928 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-30_to_2025-Dec-04_81.5_7.0

Download data: JSON

Event type: Heat wave

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

• Sri Lanka

Duration: 6 days

Time span: January 28 2025 to February 02 2025

Statistics over entire affected area:

• Mean temperature anomaly: 1.4 °C
• Mean temperature: 26.0 °C
• Maximum temperature anomaly: 2.1 °C
• Maximum temperature: 28.0 °C

Event center: 8.5°N 81.0°E

Area affected: 52008 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-Jan-28_to_2025-Feb-02_81.0_8.5

Download data: JSON

Event type: Heat wave

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

• Sri Lanka

Duration: 17 days

Time span: April 06 2023 to April 22 2023

Statistics over entire affected area:

• Mean temperature anomaly: 1.2 °C
• Mean temperature: 29.0 °C
• Maximum temperature anomaly: 2.0 °C
• Maximum temperature: 29.8 °C

Event center: 6.0°N 84.0°E

Area affected: 1674350 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-Apr-06_to_2023-Apr-22_84.0_6.0

Download data: JSON

Event type: Heat wave

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

• Sri Lanka

Duration: 14 days

Time span: November 18 2022 to December 01 2022

Statistics over entire affected area:

• Mean temperature anomaly: 1.1 °C
• Mean temperature: 27.6 °C
• Maximum temperature anomaly: 1.7 °C
• Maximum temperature: 28.1 °C

Event center: 6.0°N 82.0°E

Area affected: 236888 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_2022-Nov-18_to_2022-Dec-01_82.0_6.0

Download data: JSON

Event type: Heat wave

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

• Sri Lanka

Duration: 17 days

Time span: June 27 2022 to July 13 2022

Statistics over entire affected area:

• Mean temperature anomaly: 0.8 °C
• Mean temperature: 29.1 °C
• Maximum temperature anomaly: 1.3 °C
• Maximum temperature: 30.5 °C

Event center: 8.0°N 84.0°E

Area affected: 82736 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_2022-Jun-27_to_2022-Jul-13_84.0_8.0