Category: Extremes affecting Italy

Cold spell occuring from September 21 2025 to September 28 2025 at 44.0°N 3.5°E

Download data: JSON

Event type: Cold spell

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

  • France
  • Germany
  • Italy
  • Luxembourg
  • Spain

Duration: 8 days

Time span: September 21 2025 to September 28 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -4.4 °C
  • Mean temperature: 10.7 °C
  • Minimum temperature anomaly: -7.1 °C
  • Minimum temperature: -1.1 °C

Event center: 44.0°N 3.5°E

Area affected: 718425 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-Sep-21_to_2025-Sep-28_3.5_44.0

Cold spell occuring from July 28 2025 to August 05 2025 at 44.5°N 12.0°E

Download data: JSON

Event type: Cold spell

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

  • Austria
  • Czechia
  • France
  • Germany
  • Italy
  • Slovenia
  • Switzerland

Duration: 9 days

Time span: July 28 2025 to August 05 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -4.5 °C
  • Mean temperature: 14.6 °C
  • Minimum temperature anomaly: -7.7 °C
  • Minimum temperature: 3.9 °C

Event center: 44.5°N 12.0°E

Area affected: 312178 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-Jul-28_to_2025-Aug-05_12.0_44.5

Cold spell occuring from April 06 2025 to April 18 2025 at 39.5°N 37.5°E

Download data: JSON

Event type: Cold spell

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

  • Albania
  • Belarus
  • Bosnia and Herzegovina
  • Bulgaria
  • Croatia
  • Estonia
  • Georgia
  • Greece
  • Hungary
  • Iran, Islamic Republic of
  • Iraq
  • Italy
  • Jordan
  • Kazakhstan
  • Kuwait
  • Latvia
  • Lebanon
  • Lithuania
  • Moldova, Republic of
  • Montenegro
  • North Macedonia
  • Romania
  • Russian Federation
  • Saudi Arabia
  • Serbia
  • Slovakia
  • Syrian Arab Republic
  • Türkiye
  • Ukraine

Duration: 13 days

Time span: April 06 2025 to April 18 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -6.2 °C
  • Mean temperature: 3.6 °C
  • Minimum temperature anomaly: -14.9 °C
  • Minimum temperature: -9.7 °C

Event center: 39.5°N 37.5°E

Area affected: 4258242 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-Apr-06_to_2025-Apr-18_37.5_39.5

Heat wave occuring from February 20 2025 to February 26 2025 at 47.5°N 13.0°E

Download data: JSON

Event type: Heat wave

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

  • Austria
  • Germany
  • Italy
  • Slovenia
  • Switzerland

Duration: 7 days

Time span: February 20 2025 to February 26 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 5.9 °C
  • Mean temperature: 3.0 °C
  • Maximum temperature anomaly: 7.7 °C
  • Maximum temperature: 9.8 °C

Event center: 47.5°N 13.0°E

Area affected: 50670 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-20_to_2025-Feb-26_13.0_47.5

Heat wave occuring from February 08 2025 to February 13 2025 at 45.5°N 6.0°E

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

Heat wave occuring from January 17 2025 to January 20 2025 at 36.0°N 14.5°E

Download data: JSON

Event type: Heat wave

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

  • Italy

Duration: 4 days

Time span: January 17 2025 to January 20 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 2.2 °C
  • Mean temperature: 14.9 °C
  • Maximum temperature anomaly: 3.1 °C
  • Maximum temperature: 16.9 °C

Event center: 36.0°N 14.5°E

Area affected: 60803 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-17_to_2025-Jan-20_14.5_36.0

Heat wave occuring from December 14 2024 to December 21 2024 at 52.5°N 20.5°E

Download data: JSON

Event type: Heat wave

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

  • Austria
  • Belarus
  • Czechia
  • Denmark
  • Germany
  • Ireland
  • Italy
  • Lithuania
  • Moldova, Republic of
  • Netherlands
  • Poland
  • Romania
  • Russian Federation
  • Slovakia
  • Sweden
  • Ukraine
  • United Kingdom

Duration: 8 days

Time span: December 14 2024 to December 21 2024

Statistics over entire affected area:

  • Mean temperature anomaly: 6.3 °C
  • Mean temperature: 7.6 °C
  • Maximum temperature anomaly: 10.8 °C
  • Maximum temperature: 12.3 °C

Event center: 52.5°N 20.5°E

Area affected: 2319160 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_2024-Dec-14_to_2024-Dec-21_20.5_52.5

Cold spell occuring from October 03 2024 to October 06 2024 at 45.0°N 12.0°E

Download data: JSON

Event type: Cold spell

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

  • Italy

Duration: 4 days

Time span: October 03 2024 to October 06 2024

Statistics over entire affected area:

  • Mean temperature anomaly: -3.7 °C
  • Mean temperature: 12.3 °C
  • Minimum temperature anomaly: -5.8 °C
  • Minimum temperature: 5.9 °C

Event center: 45.0°N 12.0°E

Area affected: 57091 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-03_to_2024-Oct-06_12.0_45.0

Heat wave occuring from September 23 2024 to September 30 2024 at 39.5°N 23.5°E

Download data: JSON

Event type: Heat wave

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

  • Greece
  • Italy

Duration: 8 days

Time span: September 23 2024 to September 30 2024

Statistics over entire affected area:

  • Mean temperature anomaly: 2.2 °C
  • Mean temperature: 25.2 °C
  • Maximum temperature anomaly: 5.4 °C
  • Maximum temperature: 26.8 °C

Event center: 39.5°N 23.5°E

Area affected: 465837 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_2024-Sep-23_to_2024-Sep-30_23.5_39.5

Cold spell occuring from September 12 2024 to September 19 2024 at 40.5°N 9.0°E

Download data: JSON

Event type: Cold spell

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

  • France
  • Italy

Duration: 8 days

Time span: September 12 2024 to September 19 2024

Statistics over entire affected area:

  • Mean temperature anomaly: -3.3 °C
  • Mean temperature: 18.4 °C
  • Minimum temperature anomaly: -6.6 °C
  • Minimum temperature: 13.3 °C

Event center: 40.5°N 9.0°E

Area affected: 80249 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-Sep-12_to_2024-Sep-19_9.0_40.5