Bulgaria vs Spain: Cooling and heating degree days - Regions — Cooling degree days days

Bulgaria
106.77 Degree days
in 2023
Spain
128.48 Degree days
in 2023
Bulgaria rank
13th
Spain rank
11th

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

  • Bulgaria
  • Spain
-50050100150198120022023

How they compare

Spain currently reports 128.48 Degree days against 106.77 Degree days in Bulgaria, a difference of 21.71 Degree days.

That makes Spain's figure about 1.2 times Bulgaria's.

The two have swapped places 14 times across 43 shared years of data; in 1981 it was Spain ahead.

Bulgaria ranks 13th and Spain ranks 11th of 48 countries.

Across the 5 decades both report, Bulgaria averaged higher in 1 and Spain in 4.

Head to head by decade

Decade Bulgaria Spain Difference Ahead
1980s -25.3 Degree days -21.41 Degree days 3.89 Degree days Spain
1990s -8.68 Degree days -4.89 Degree days 3.8 Degree days Spain
2000s 27.29 Degree days 20.2 Degree days 7.08 Degree days Bulgaria
2010s 40.45 Degree days 55.11 Degree days 14.66 Degree days Spain
2020s 75.69 Degree days 106.31 Degree days 30.61 Degree days Spain

Averages of every year both report within each decade.

Frequently asked questions

Which has higher cooling and heating degree days - regions — cooling degree days days, Bulgaria or Spain?
Spain, at 128.48 Degree days against 106.77 Degree days in Bulgaria as of 2023.
What is the difference in cooling and heating degree days - regions — cooling degree days days between Bulgaria and Spain?
21.71 Degree days, with Spain ahead.
How many years of comparable data are there for Bulgaria and Spain?
43 years are reported by both, from 1981 to 2023.
How do Bulgaria and Spain rank globally for cooling and heating degree days - regions — cooling degree days days?
Bulgaria ranks 13th and Spain ranks 11th 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 days change compared to 1981-2010 average. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Bulgaria vs Spain: Cooling and heating degree days - Regions — Cooling degree days days. Statizoid, drawing on Organisation for Economic Co-operation and Development. Retrieved 23 August 2026, from https://reference.statizoid.com/compare/cooling-and-heating-degree-days-regions-cooling-degree-days-days-change-compared-to-1981/bulgaria/spain/

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About this data

Indicator
Cooling and heating degree days - Regions — Cooling degree days days change compared to 1981-2010 average
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.