Croatia vs Romania: Cooling and heating degree days - Regions — Cooling degree days

Croatia
144.88 Degree days
in 2023
Romania
129.94 Degree days
in 2023
Croatia rank
23rd
Romania rank
25th

Cooling and heating degree days - Regions — Cooling degree days over time

  • Croatia
  • Romania
050100150200198120022023

How they compare

Croatia currently reports 144.88 Degree days against 129.94 Degree days in Romania, a difference of 14.94 Degree days.

That makes Croatia's figure about 1.1 times Romania's.

The two have swapped places 16 times across 43 shared years of data; in 1981 it was Croatia ahead.

Croatia ranks 23rd and Romania ranks 25th of 48 countries.

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

Head to head by decade

Decade Croatia Romania Difference Ahead
1980s 58.42 Degree days 39.92 Degree days 18.51 Degree days Croatia
1990s 72.14 Degree days 53.97 Degree days 18.17 Degree days Croatia
2000s 105.96 Degree days 88.21 Degree days 17.75 Degree days Croatia
2010s 130.76 Degree days 104.14 Degree days 26.61 Degree days Croatia
2020s 148.65 Degree days 117.22 Degree days 31.43 Degree days Croatia

Averages of every year both report within each decade.

Frequently asked questions

Which has higher cooling and heating degree days - regions — cooling degree days, Croatia or Romania?
Croatia, at 144.88 Degree days against 129.94 Degree days in Romania as of 2023.
What is the difference in cooling and heating degree days - regions — cooling degree days between Croatia and Romania?
14.94 Degree days, with Croatia ahead.
How many years of comparable data are there for Croatia and Romania?
43 years are reported by both, from 1981 to 2023.
How do Croatia and Romania rank globally for cooling and heating degree days - regions — cooling degree days?
Croatia ranks 23rd and Romania ranks 25th of 48 countries.
Where does this data come from?
Organisation for Economic Co-operation and Development, published as Cooling and heating degree days - Regions — Cooling degree days. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Croatia vs Romania: Cooling and heating degree days - Regions — Cooling degree days. Statizoid, drawing on Organisation for Economic Co-operation and Development. Retrieved 18 August 2026, from https://reference.statizoid.com/compare/cooling-and-heating-degree-days-regions-cooling-degree-days/croatia/romania/

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About this data

Indicator
Cooling and heating degree days - Regions — Cooling degree days
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>