Category: Cold spells affecting Portugal

Cold spell occuring from March 16 2026 to March 22 2026 at 33.5°N 338.0°E

Download data: JSON

Event type: Cold spell

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

  • Portugal

Duration: 7 days

Time span: March 16 2026 to March 22 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -2.2 °C
  • Mean temperature: 15.1 °C
  • Minimum temperature anomaly: -5.3 °C
  • Minimum temperature: 10.3 °C

Event center: 33.5°N 338.0°E

Area affected: 1421435 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: Cold_spell_2026-Mar-16_to_2026-Mar-22_338.0_33.5

Cold spell occuring from March 05 2026 to March 10 2026 at 34.5°N 348.0°E

Download data: JSON

Event type: Cold spell

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

  • Portugal

Duration: 6 days

Time span: March 05 2026 to March 10 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -1.7 °C
  • Mean temperature: 14.3 °C
  • Minimum temperature anomaly: -2.5 °C
  • Minimum temperature: 11.8 °C

Event center: 34.5°N 348.0°E

Area affected: 680308 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: Cold_spell_2026-Mar-05_to_2026-Mar-10_348.0_34.5

Cold spell occuring from November 20 2025 to November 22 2025 at 43.0°N 354.5°E

Download data: JSON

Event type: Cold spell

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

  • Portugal
  • Spain

Duration: 3 days

Time span: November 20 2025 to November 22 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -4.0 °C
  • Mean temperature: 3.9 °C
  • Minimum temperature anomaly: -5.5 °C
  • Minimum temperature: -1.2 °C

Event center: 43.0°N 354.5°E

Area affected: 89392 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: Cold_spell_2025-Nov-20_to_2025-Nov-22_354.5_43.0

Cold spell occuring from November 11 2025 to November 13 2025 at 40.0°N 332.0°E

Download data: JSON

Event type: Cold spell

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

  • Portugal

Duration: 3 days

Time span: November 11 2025 to November 13 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -2.6 °C
  • Mean temperature: 15.0 °C
  • Minimum temperature anomaly: -3.3 °C
  • Minimum temperature: 13.8 °C

Event center: 40.0°N 332.0°E

Area affected: 125602 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: Cold_spell_2025-Nov-11_to_2025-Nov-13_332.0_40.0

Cold spell occuring from March 12 2025 to March 18 2025 at 44.5°N 359.5°E

Download data: JSON

Event type: Cold spell

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

  • Andorra
  • Belgium
  • France
  • Portugal
  • Spain
  • United Kingdom

Duration: 7 days

Time span: March 12 2025 to March 18 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -3.7 °C
  • Mean temperature: 6.3 °C
  • Minimum temperature anomaly: -7.8 °C
  • Minimum temperature: -1.6 °C

Event center: 44.5°N 359.5°E

Area affected: 1142813 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: Cold_spell_2025-Mar-12_to_2025-Mar-18_359.5_44.5

Cold spell occuring from December 29 2024 to January 01 2025 at 41.5°N 355.5°E

Download data: JSON

Event type: Cold spell

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

  • Portugal
  • Spain

Duration: 4 days

Time span: December 29 2024 to January 01 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -5.1 °C
  • Mean temperature: 0.1 °C
  • Minimum temperature anomaly: -6.9 °C
  • Minimum temperature: -1.7 °C

Event center: 41.5°N 355.5°E

Area affected: 57695 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: Cold_spell_2024-Dec-29_to_2025-Jan-01_355.5_41.5

Cold spell occuring from December 09 2024 to December 13 2024 at 37.5°N 353.0°E

Download data: JSON

Event type: Cold spell

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

  • Morocco
  • Portugal
  • Spain

Duration: 5 days

Time span: December 09 2024 to December 13 2024

Statistics over entire affected area:

  • Mean temperature anomaly: -2.9 °C
  • Mean temperature: 10.3 °C
  • Minimum temperature anomaly: -6.0 °C
  • Minimum temperature: 2.0 °C

Event center: 37.5°N 353.0°E

Area affected: 255047 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: Cold_spell_2024-Dec-09_to_2024-Dec-13_353.0_37.5

Cold spell occuring from October 26 2024 to November 02 2024 at 32.0°N 354.5°E

Download data: JSON

Event type: Cold spell

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

  • Algeria
  • Mauritania
  • Morocco
  • Portugal
  • Spain

Duration: 8 days

Time span: October 26 2024 to November 02 2024

Statistics over entire affected area:

  • Mean temperature anomaly: -4.4 °C
  • Mean temperature: 15.8 °C
  • Minimum temperature anomaly: -9.4 °C
  • Minimum temperature: -0.1 °C

Event center: 32.0°N 354.5°E

Area affected: 694137 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: Cold_spell_2024-Oct-26_to_2024-Nov-02_354.5_32.0

Cold spell occuring from August 20 2024 to October 04 2024 at 32.5°N 350.5°E

Download data: JSON

Event type: Cold spell

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

  • Gambia
  • Guinea
  • Mali
  • Mauritania
  • Morocco
  • Portugal
  • Senegal
  • Spain

Duration: 46 days

Time span: August 20 2024 to October 04 2024

Statistics over entire affected area:

  • Mean temperature anomaly: -2.6 °C
  • Mean temperature: 22.9 °C
  • Minimum temperature anomaly: -9.2 °C
  • Minimum temperature: 7.3 °C

Event center: 32.5°N 350.5°E

Area affected: 1762984 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: Cold_spell_2024-Aug-20_to_2024-Oct-04_350.5_32.5

Cold spell occuring from July 02 2024 to July 14 2024 at 42.5°N 350.5°E

Download data: JSON

Event type: Cold spell

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

  • Portugal

Duration: 13 days

Time span: July 02 2024 to July 14 2024

Statistics over entire affected area:

  • Mean temperature anomaly: -1.1 °C
  • Mean temperature: 18.0 °C
  • Minimum temperature anomaly: -2.7 °C
  • Minimum temperature: 15.0 °C

Event center: 42.5°N 350.5°E

Area affected: 291803 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: Cold_spell_2024-Jul-02_to_2024-Jul-14_350.5_42.5