Category: Extremes affecting Czechia

Cold spell occuring from January 05 2026 to January 12 2026 at 50.5°N 16.0°E

Download data: JSON

Event type: Cold spell

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

  • Czechia
  • Germany
  • Poland

Duration: 8 days

Time span: January 05 2026 to January 12 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -8.5 °C
  • Mean temperature: -7.7 °C
  • Minimum temperature anomaly: -13.3 °C
  • Minimum temperature: -15.0 °C

Event center: 50.5°N 16.0°E

Area affected: 108500 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-Jan-05_to_2026-Jan-12_16.0_50.5

Cold spell occuring from December 27 2025 to January 12 2026 at 44.0°N 2.0°E

Download data: JSON

Event type: Cold spell

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

  • Andorra
  • Austria
  • Czechia
  • France
  • Germany
  • Italy
  • Spain
  • Switzerland

Duration: 17 days

Time span: December 27 2025 to January 12 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -6.3 °C
  • Mean temperature: -1.8 °C
  • Minimum temperature anomaly: -13.6 °C
  • Minimum temperature: -24.4 °C

Event center: 44.0°N 2.0°E

Area affected: 1039488 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-Dec-27_to_2026-Jan-12_2.0_44.0

Cold spell occuring from November 20 2025 to November 24 2025 at 51.0°N 8.5°E

Download data: JSON

Event type: Cold spell

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

  • Czechia
  • Germany
  • Poland

Duration: 5 days

Time span: November 20 2025 to November 24 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -6.4 °C
  • Mean temperature: -3.2 °C
  • Minimum temperature anomaly: -11.3 °C
  • Minimum temperature: -11.0 °C

Event center: 51.0°N 8.5°E

Area affected: 290438 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-24_8.5_51.0

Cold spell occuring from September 29 2025 to October 10 2025 at 40.5°N 17.5°E

Download data: JSON

Event type: Cold spell

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

  • Albania
  • Austria
  • Bosnia and Herzegovina
  • Bulgaria
  • Croatia
  • Czechia
  • France
  • Germany
  • Greece
  • Hungary
  • Italy
  • Moldova, Republic of
  • Montenegro
  • North Macedonia
  • Poland
  • Romania
  • Serbia
  • Slovakia
  • Slovenia
  • Ukraine

Duration: 12 days

Time span: September 29 2025 to October 10 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -5.1 °C
  • Mean temperature: 10.0 °C
  • Minimum temperature anomaly: -12.5 °C
  • Minimum temperature: -4.1 °C

Event center: 40.5°N 17.5°E

Area affected: 2031067 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-29_to_2025-Oct-10_17.5_40.5

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 February 15 2025 to February 20 2025 at 52.0°N 16.5°E

Download data: JSON

Event type: Cold spell

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

  • Austria
  • Czechia
  • Germany
  • Poland

Duration: 6 days

Time span: February 15 2025 to February 20 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -6.8 °C
  • Mean temperature: -6.0 °C
  • Minimum temperature anomaly: -13.8 °C
  • Minimum temperature: -13.6 °C

Event center: 52.0°N 16.5°E

Area affected: 255235 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-Feb-15_to_2025-Feb-20_16.5_52.0

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

Heat wave occuring from October 08 2024 to October 10 2024 at 53.0°N 15.0°E

Download data: JSON

Event type: Heat wave

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

  • Czechia
  • Germany
  • Poland

Duration: 3 days

Time span: October 08 2024 to October 10 2024

Statistics over entire affected area:

  • Mean temperature anomaly: 5.0 °C
  • Mean temperature: 15.3 °C
  • Maximum temperature anomaly: 6.1 °C
  • Maximum temperature: 16.5 °C

Event center: 53.0°N 15.0°E

Area affected: 80317 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-Oct-08_to_2024-Oct-10_15.0_53.0

Cold spell occuring from September 08 2024 to September 19 2024 at 67.0°N 338.5°E

Download data: JSON

Event type: Cold spell

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

  • Albania
  • Andorra
  • Austria
  • Belgium
  • Bosnia and Herzegovina
  • Bulgaria
  • Croatia
  • Czechia
  • Denmark
  • France
  • Germany
  • Greece
  • Hungary
  • Iceland
  • Ireland
  • Italy
  • Luxembourg
  • Montenegro
  • Netherlands
  • North Macedonia
  • Norway
  • Romania
  • Serbia
  • Slovakia
  • Slovenia
  • Spain
  • Switzerland
  • United Kingdom

Duration: 12 days

Time span: September 08 2024 to September 19 2024

Statistics over entire affected area:

  • Mean temperature anomaly: -3.1 °C
  • Mean temperature: 7.7 °C
  • Minimum temperature anomaly: -7.2 °C
  • Minimum temperature: -8.6 °C

Event center: 67.0°N 338.5°E

Area affected: 2969063 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-08_to_2024-Sep-19_338.5_67.0

Heat wave occuring from April 28 2024 to May 06 2024 at 60.5°N 6.0°E

Download data: JSON

Event type: Heat wave

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

  • Austria
  • Belarus
  • Belgium
  • Czechia
  • Denmark
  • Germany
  • Latvia
  • Lithuania
  • Netherlands
  • Norway
  • Poland
  • Russian Federation
  • Sweden
  • United Kingdom

Duration: 9 days

Time span: April 28 2024 to May 06 2024

Statistics over entire affected area:

  • Mean temperature anomaly: 4.8 °C
  • Mean temperature: 13.1 °C
  • Maximum temperature anomaly: 9.6 °C
  • Maximum temperature: 21.2 °C

Event center: 60.5°N 6.0°E

Area affected: 2297952 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-Apr-28_to_2024-May-06_6.0_60.5