Estonia vs Finland: Cooling and heating degree days - Regions

Estonia
3,166 Degree days
in 2023
Finland
4,433 Degree days
in 2023
Estonia rank
8th
Finland rank
5th

Cooling and heating degree days - Regions over time

  • Estonia
  • Finland
02.0k4.0k6.0k198120022023

How they compare

Finland currently reports 4,433 Degree days against 3,166 Degree days in Estonia, a difference of 1,267 Degree days.

That makes Finland's figure about 1.4 times Estonia's.

Across all 43 years both countries report, Finland has been ahead every year.

Estonia ranks 8th and Finland ranks 5th of 48 countries.

Finland has averaged higher in every one of the 5 decades both report.

Head to head by decade

Decade Estonia Finland Difference Ahead
1980s 3,648 Degree days 4,929 Degree days 1,281 Degree days Finland
1990s 3,483 Degree days 4,723 Degree days 1,239 Degree days Finland
2000s 3,357 Degree days 4,511 Degree days 1,154 Degree days Finland
2010s 3,325 Degree days 4,440 Degree days 1,115 Degree days Finland
2020s 3,156 Degree days 4,321 Degree days 1,164 Degree days Finland

Averages of every year both report within each decade.

Frequently asked questions

Which has higher cooling and heating degree days - regions, Estonia or Finland?
Finland, at 4,433 Degree days against 3,166 Degree days in Estonia as of 2023.
What is the difference in cooling and heating degree days - regions between Estonia and Finland?
1,267 Degree days, with Finland ahead.
How many years of comparable data are there for Estonia and Finland?
43 years are reported by both, from 1981 to 2023.
How do Estonia and Finland rank globally for cooling and heating degree days - regions?
Estonia ranks 8th and Finland ranks 5th of 48 countries.
Where does this data come from?
Organisation for Economic Co-operation and Development, published as Cooling and heating degree days - Regions. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Estonia vs Finland: Cooling and heating degree days - Regions. Statizoid, drawing on Organisation for Economic Co-operation and Development. Retrieved 17 August 2026, from https://reference.statizoid.com/compare/cooling-and-heating-degree-days-regions/estonia/finland/

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About this data

Indicator
Cooling and heating degree days - Regions
Unit
Degree days
Source
Organisation for Economic Co-operation and Development
Licence
OECD Terms and Conditions (attribution required)
Coverage
52 places, 2,236 data points, 1981–2023
Last refreshed

<p style="text-align: justify;">This dataset provides indicators on Cooling and Heating Degree Days, in large (TL2) and small (TL3) regions.</p> <p><strong>Data definition and source</strong></p> <ul> <li>Cooling Degree Days (CDD) quantify how hot a given period was, indicating the energy demand for cooling buildings. CDD is calculated as the sum of the differences between the daily mean temperature and a reference temperature of 22&deg;C, for all days when the mean temperature exceeds 22&deg;C.</li> <li>Heating Degree Days (HDD) quantify how cold a given period was, reflecting the energy demand for heating buildings. HDD is calculated as the sum of the differences between a reference temperature of 15&deg;C and the daily mean temperature, for all days when the mean temperature falls below 15&deg;C.</li> </ul> <div id="subgroup-hdd" class="flex flex-col gap-2"> <div class="flex items-start gap-2" style="text-align: justify;">Those indicators are based on Copernicus ERA5-Land. ERA5-Land is used as it provides harmonised, globally consistent coverage at fine spatial resolution (0.1 degree), enabling the production of comparable subnational indicators also where national meteorological data are not available at the required scale.</div> <div class="flex items-start gap-2" style="text-align: justify;"><br />These estimates may differ from official subnational climate statistics due to differences in methodological approaches, such as the use of reanalysis based top down modelling versus in situ observations, along with variations in input data sources, spatial resolution, and the models and algorithms used to generate temperature estimates.</div> </div> <p><strong>Definition of regions</strong></p> <p style="text-align: justify;">Regions are subnational units below national boundaries. OECD countries have two regional levels: large regions (territorial level 2 or TL2) and small regions (territorial level 3 or TL3). For more information, see the OECD Territorial grid <a href="https://webfs-cfe.oecd.org/files/.Stat/region/OECD_territorial-grid_TL2024.pdf">(pdf)</a> and the OECD Territorial Correspondence Table <a href="https://webfs-cfe.oecd.org/files/.Stat/region/OECD%20Territorial%20correspondence%20-%20TL2024c.xlsx">(xlsx)</a>.&nbsp;</p> <p><strong>Cite this dataset</strong></p> <p>OECD Regions, Cities and Local Areas database&nbsp;<a href="http://oe.cd/geostats">http://oe.cd/geostats</a>.</p> <p><strong>Further information</strong></p> <ul> <li><a href="https://localdataportal.oecd.org/">OECD Local Data Portal</a>&nbsp;</li> <li><a href="https://www.oecd.org/en/publications/oecd-regions-and-cities-at-a-glance-2024_f42db3bf-en.html">OECD Regions and Cities at a Glance</a></li> </ul> <p>For questions and/or comments, please email <a href="mailto:RegionStat@oecd.org">RegionStat@oecd.org</a>.</p>