Category: Heat waves affecting Finland

(ongoing) Heat wave occuring from April 05 2026 to May 03 2026 at 72.5°N 334.5°E

Download data: JSON

Event type: Heat wave

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

  • Faroe Islands
  • Finland
  • Greenland
  • Iceland
  • Netherlands
  • Norway
  • Russian Federation
  • Sweden
  • United Kingdom

Duration: 29 days

Time span: April 05 2026 to May 03 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 6.5 °C
  • Mean temperature: 0.3 °C
  • Maximum temperature anomaly: 21.0 °C
  • Maximum temperature: 14.6 °C

Event center: 72.5°N 25.5°W

Area affected: 9690083 km$^2$


Fig. 1: unavailable since event is ongoing.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2026-Apr-05_to_2026-May-03_334.5_72.5

(ongoing) Heat wave occuring from April 02 2026 to May 03 2026 at 41.5°N 10.0°E

Download data: JSON

Event type: Heat wave

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

  • Albania
  • Algeria
  • Andorra
  • Austria
  • Bosnia and Herzegovina
  • Canarias
  • Croatia
  • Denmark
  • Faroe Islands
  • Finland
  • France
  • Germany
  • Greece
  • Iceland
  • Ireland
  • Italy
  • Libya
  • Mauritania
  • Montenegro
  • Morocco
  • Netherlands
  • Norway
  • Portugal
  • Serbia
  • Slovenia
  • Spain
  • Sweden
  • Switzerland
  • Tunisia
  • United Kingdom

Duration: 32 days

Time span: April 02 2026 to May 03 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 3.3 °C
  • Mean temperature: 14.9 °C
  • Maximum temperature anomaly: 12.0 °C
  • Maximum temperature: 31.2 °C

Event center: 41.5°N 370.0°E

Area affected: 7764994 km$^2$


Fig. 1: unavailable since event is ongoing.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2026-Apr-02_to_2026-May-03_10.0_41.5

(ongoing) Heat wave occuring from October 16 2022 to May 03 2026 at 10.5°N 294.0°E

Download data: JSON

Event type: Heat wave

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

  • Afghanistan
  • Albania
  • Algeria
  • Andorra
  • Angola
  • Antarctica
  • Argentina
  • Armenia
  • Aruba
  • Australia
  • Austria
  • Azerbaijan
  • Azores
  • Bahamas
  • Bahrain
  • Bangladesh
  • Belarus
  • Belgium
  • Belize
  • Benin
  • Bhutan
  • Bolivia
  • Bosnia and Herzegovina
  • Botswana
  • Brazil
  • Brunei Darussalam
  • Bulgaria
  • Burkina Faso
  • Burundi
  • Cabo Verde
  • Cambodia
  • Cameroon
  • Canada
  • Canarias
  • Central African Republic
  • Chad
  • Chile
  • China
  • Colombia
  • Congo
  • Congo DRC
  • Costa Rica
  • Croatia
  • Cuba
  • Cyprus
  • Czech Republic
  • Côte d’Ivoire
  • Denmark
  • Djibouti
  • Dominican Republic
  • Ecuador
  • Egypt
  • El Salvador
  • Equatorial Guinea
  • Eritrea
  • Estonia
  • Eswatini
  • Ethiopia
  • Falkland Islands
  • Faroe Islands
  • Fiji
  • Finland
  • France
  • French Guiana
  • French Southern Territories
  • Gabon
  • Gambia
  • Georgia
  • Germany
  • Ghana
  • Greece
  • Greenland
  • Guatemala
  • Guinea
  • Guinea-Bissau
  • Guyana
  • Haiti
  • Honduras
  • Hungary
  • Iceland
  • India
  • Indonesia
  • Iran
  • Iraq
  • Ireland
  • Israel
  • Italy
  • Jamaica
  • Japan
  • Jordan
  • Kazakhstan
  • Kenya
  • Kuwait
  • Kyrgyzstan
  • Laos
  • Latvia
  • Lebanon
  • Lesotho
  • Liberia
  • Libya
  • Lithuania
  • Luxembourg
  • Madagascar
  • Madeira
  • Malawi
  • Malaysia
  • Mali
  • Martinique
  • Mauritania
  • Mauritius
  • Mexico
  • Moldova
  • Mongolia
  • Montenegro
  • Morocco
  • Mozambique
  • Myanmar
  • Namibia
  • Nepal
  • Netherlands
  • New Caledonia
  • New Zealand
  • Nicaragua
  • Niger
  • Nigeria
  • North Korea
  • North Macedonia
  • Norway
  • Oman
  • Pakistan
  • Palau
  • Palestinian Territory
  • Panama
  • Papua New Guinea
  • Paraguay
  • Peru
  • Philippines
  • Poland
  • Portugal
  • Puerto Rico
  • Qatar
  • Romania
  • Russian Federation
  • Rwanda
  • Réunion
  • Saint Eustatius
  • Saint Lucia
  • Samoa
  • Saudi Arabia
  • Senegal
  • Serbia
  • Sierra Leone
  • Slovakia
  • Slovenia
  • Solomon Islands
  • Somalia
  • South Africa
  • South Georgia and the South Sandwich Islands
  • South Korea
  • South Sudan
  • Spain
  • Sri Lanka
  • Sudan
  • Suriname
  • Sweden
  • Switzerland
  • Syria
  • Tajikistan
  • Tanzania
  • Thailand
  • Timor-Leste
  • Togo
  • Tunisia
  • Turkiye
  • Turkmenistan
  • Turks and Caicos Islands
  • Uganda
  • Ukraine
  • United Arab Emirates
  • United Kingdom
  • United States
  • Uruguay
  • Uzbekistan
  • Vanuatu
  • Venezuela
  • Vietnam
  • Yemen
  • Zambia
  • Zimbabwe

Duration: 1296 days

Time span: October 16 2022 to May 03 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 3.4 °C
  • Mean temperature: 18.1 °C
  • Maximum temperature anomaly: 33.2 °C
  • Maximum temperature: 46.7 °C

Event center: 10.5°N 294.0°E

Area affected: 509588681 km$^2$


Fig. 1: unavailable since event is ongoing.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2022-Oct-16_to_2026-May-03_294.0_10.5

Heat wave occuring from February 23 2026 to April 16 2026 at 46.0°N 52.0°E

Download data: JSON

Event type: Heat wave

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

  • Afghanistan
  • Austria
  • Azerbaijan
  • Belarus
  • Bhutan
  • China
  • Czech Republic
  • Denmark
  • Estonia
  • Finland
  • Georgia
  • Germany
  • Greenland
  • Hungary
  • India
  • Iran
  • Italy
  • Kazakhstan
  • Kyrgyzstan
  • Latvia
  • Lithuania
  • Mongolia
  • Nepal
  • Norway
  • Pakistan
  • Poland
  • Romania
  • Russian Federation
  • Slovakia
  • Sweden
  • Tajikistan
  • Turkiye
  • Turkmenistan
  • Ukraine
  • United Kingdom
  • Uzbekistan

Duration: 53 days

Time span: February 23 2026 to April 16 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 10.3 °C
  • Mean temperature: -4.0 °C
  • Maximum temperature anomaly: 22.3 °C
  • Maximum temperature: 27.7 °C

Event center: 46.0°N 52.0°E

Area affected: 23119180 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-Feb-23_to_2026-Apr-16_52.0_46.0

Heat wave occuring from November 11 2025 to November 13 2025 at 57.0°N 18.0°E

Download data: JSON

Event type: Heat wave

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

  • Finland
  • Sweden

Duration: 3 days

Time span: November 11 2025 to November 13 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 3.7 °C
  • Mean temperature: 9.6 °C
  • Maximum temperature anomaly: 4.5 °C
  • Maximum temperature: 11.2 °C

Event center: 57.0°N 18.0°E

Area affected: 80534 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-11_to_2025-Nov-13_18.0_57.0

Heat wave occuring from March 18 2025 to March 23 2025 at 57.5°N 23.5°E

Download data: JSON

Event type: Heat wave

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

  • Estonia
  • Finland
  • Russian Federation

Duration: 6 days

Time span: March 18 2025 to March 23 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 4.3 °C
  • Mean temperature: 3.6 °C
  • Maximum temperature anomaly: 6.6 °C
  • Maximum temperature: 5.2 °C

Event center: 57.5°N 23.5°E

Area affected: 97837 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-Mar-18_to_2025-Mar-23_23.5_57.5

Heat wave occuring from December 24 2024 to December 30 2024 at 66.0°N 20.5°E

Download data: JSON

Event type: Heat wave

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

  • Finland
  • Norway
  • Sweden

Duration: 7 days

Time span: December 24 2024 to December 30 2024

Statistics over entire affected area:

  • Mean temperature anomaly: 9.1 °C
  • Mean temperature: 1.8 °C
  • Maximum temperature anomaly: 14.1 °C
  • Maximum temperature: 9.1 °C

Event center: 66.0°N 20.5°E

Area affected: 336076 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-24_to_2024-Dec-30_20.5_66.0

Heat wave occuring from November 25 2024 to December 01 2024 at 60.0°N 26.5°E

Download data: JSON

Event type: Heat wave

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

  • Estonia
  • Finland
  • Russian Federation

Duration: 7 days

Time span: November 25 2024 to December 01 2024

Statistics over entire affected area:

  • Mean temperature anomaly: 5.7 °C
  • Mean temperature: 6.0 °C
  • Maximum temperature anomaly: 8.4 °C
  • Maximum temperature: 10.5 °C

Event center: 60.0°N 26.5°E

Area affected: 190304 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-Nov-25_to_2024-Dec-01_26.5_60.0

Heat wave occuring from November 12 2024 to November 16 2024 at 63.0°N 20.0°E

Download data: JSON

Event type: Heat wave

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

  • Finland
  • Sweden

Duration: 5 days

Time span: November 12 2024 to November 16 2024

Statistics over entire affected area:

  • Mean temperature anomaly: 6.6 °C
  • Mean temperature: 5.3 °C
  • Maximum temperature anomaly: 10.9 °C
  • Maximum temperature: 8.6 °C

Event center: 63.0°N 20.0°E

Area affected: 91600 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-Nov-12_to_2024-Nov-16_20.0_63.0

Heat wave occuring from June 11 2024 to July 05 2024 at 80.0°N 13.5°E

Download data: JSON

Event type: Heat wave

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

  • Finland
  • Greenland
  • Norway
  • Russian Federation
  • Svalbard and Jan Mayen
  • Sweden

Duration: 25 days

Time span: June 11 2024 to July 05 2024

Statistics over entire affected area:

  • Mean temperature anomaly: 2.2 °C
  • Mean temperature: 6.6 °C
  • Maximum temperature anomaly: 9.2 °C
  • Maximum temperature: 19.1 °C

Event center: 80.0°N 13.5°E

Area affected: 1851783 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-Jun-11_to_2024-Jul-05_13.5_80.0