Czechia vs Slovenia: Cooling and heating degree days - Regions — Cooling degree days

Czechia
30.4 Degree days
in 2023
Slovenia
47.32 Degree days
in 2023
Czechia rank
27th
Slovenia rank
26th

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

  • Czechia
  • Slovenia
020406080198120022023

How they compare

Slovenia currently reports 47.32 Degree days against 30.4 Degree days in Czechia, a difference of 16.92 Degree days.

That makes Slovenia's figure about 1.6 times Czechia's.

The two have swapped places 8 times across 43 shared years of data; in 1981 it was Slovenia ahead.

Czechia ranks 27th and Slovenia ranks 26th of 48 countries.

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

Head to head by decade

Decade Czechia Slovenia Difference Ahead
1980s 6.05 Degree days 14.46 Degree days 8.41 Degree days Slovenia
1990s 11.92 Degree days 22.69 Degree days 10.77 Degree days Slovenia
2000s 12.81 Degree days 32.17 Degree days 19.35 Degree days Slovenia
2010s 28.64 Degree days 50.48 Degree days 21.84 Degree days Slovenia
2020s 19.65 Degree days 48.74 Degree days 29.09 Degree days Slovenia

Averages of every year both report within each decade.

Frequently asked questions

Which has higher cooling and heating degree days - regions — cooling degree days, Czechia or Slovenia?
Slovenia, at 47.32 Degree days against 30.4 Degree days in Czechia as of 2023.
What is the difference in cooling and heating degree days - regions — cooling degree days between Czechia and Slovenia?
16.92 Degree days, with Slovenia ahead.
How many years of comparable data are there for Czechia and Slovenia?
43 years are reported by both, from 1981 to 2023.
How do Czechia and Slovenia rank globally for cooling and heating degree days - regions — cooling degree days?
Czechia ranks 27th and Slovenia ranks 26th 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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Czechia vs Slovenia: Cooling and heating degree days - Regions — Cooling degree days. Statizoid, drawing on Organisation for Economic Co-operation and Development. Retrieved 21 August 2026, from https://reference.statizoid.com/compare/cooling-and-heating-degree-days-regions-cooling-degree-days/czechia/slovenia/

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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

This dataset provides indicators on Cooling and Heating Degree Days, in large (TL2) and small (TL3) regions. Data definition and source 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°C, for all days when the mean temperature exceeds 22°C. 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°C and the daily mean temperature, for all days when the mean temperature falls below 15°C. 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. 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. Definition of regions 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 (pdf) and the OECD Territorial Correspondence Table (xlsx). Cite this dataset OECD Regions, Cities and Local Areas database http://oe.cd/geostats. Further information OECD Local Data Portal OECD Regions and Cities at a Glance For questions and/or comments, please email RegionStat@oecd.org.