Cooling and heating degree days - Regions — Cooling degree days in Bulgaria

Bulgaria: Cooling and heating degree days - Regions — Cooling degree days was 186.39 Degree days in 2023. ▲ Rising

Latest (2023)
186.39 Degree days
Change on year
up 24.8%
World rank
21st
of 48 countries
All-time high
214.24 Degree days
in 2012
All-time low
23.03 Degree days
in 1983
Years of data
43
1981–2023

Cooling and heating degree days - Regions — Cooling degree days in Bulgaria, 1981–2023

0501001502001981200220231981: 47.7 Degree days1982: 27.7 Degree days1983: 23 Degree days1984: 29.3 Degree days1985: 62.5 Degree days1986: 46 Degree days1987: 97.1 Degree days1988: 108 Degree days1989: 47.5 Degree days1990: 64.9 Degree days1991: 32.5 Degree days1992: 72.3 Degree days1993: 84.2 Degree days1994: 99.9 Degree days1995: 36.7 Degree days1996: 75.3 Degree days1997: 40.9 Degree days1998: 113.7 Degree days1999: 88.9 Degree days2000: 158.9 Degree days2001: 126.1 Degree days2002: 90.7 Degree days2003: 119.9 Degree days2004: 43 Degree days2005: 43.7 Degree days2006: 92.9 Degree days2007: 183.7 Degree days2008: 124.8 Degree days2009: 85.3 Degree days2010: 121.3 Degree days2011: 94.3 Degree days2012: 214.2 Degree days2013: 103.4 Degree days2014: 62.5 Degree days2015: 142.3 Degree days2016: 133 Degree days2017: 143.9 Degree days2018: 74.8 Degree days2019: 110.8 Degree days2020: 119.8 Degree days2021: 165.6 Degree days2022: 149.4 Degree days2023: 186.4 Degree days

Source: Organisation for Economic Co-operation and Development. Measured in Degree days.

Analysis

Bulgaria recorded 186.39 Degree days for cooling and heating degree days - regions — cooling degree days in 2023.

The figure is up 24.8% on the previous year and up 80.3% over ten years.

Over the whole period, cooling and heating degree days - regions — cooling degree days in Bulgaria peaked at 214.24 Degree days in 2012 and was at its lowest, 23.03 Degree days, in 1983.

Bulgaria ranks 21st of 48 countries on this measure, in the middle of the range.

The long-run direction has been consistently rising across the 43 years of available data.

Cooling and heating degree days - Regions — Cooling degree days in Bulgaria, year by year

Annual values for Cooling and heating degree days - Regions — Cooling degree days in Bulgaria, 1981 to 2023.
Year Degree days Change
1981 47.7 Degree days —
1982 27.68 Degree days -42.0%
1983 23.03 Degree days -16.8%
1984 29.34 Degree days +27.4%
1985 62.49 Degree days +113.0%
1986 45.99 Degree days -26.4%
1987 97.06 Degree days +111.1%
1988 107.98 Degree days +11.3%
1989 47.54 Degree days -56.0%
1990 64.91 Degree days +36.5%
1991 32.55 Degree days -49.9%
1992 72.3 Degree days +122.1%
1993 84.19 Degree days +16.4%
1994 99.87 Degree days +18.6%
1995 36.67 Degree days -63.3%
1996 75.3 Degree days +105.3%
1997 40.95 Degree days -45.6%
1998 113.65 Degree days +177.5%
1999 88.9 Degree days -21.8%
2000 158.9 Degree days +78.8%
2001 126.07 Degree days -20.7%
2002 90.68 Degree days -28.1%
2003 119.92 Degree days +32.2%
2004 42.97 Degree days -64.2%
2005 43.71 Degree days +1.7%
2006 92.94 Degree days +112.6%
2007 183.66 Degree days +97.6%
2008 124.78 Degree days -32.1%
2009 85.35 Degree days -31.6%
2010 121.27 Degree days +42.1%
2011 94.32 Degree days -22.2%
2012 214.24 Degree days +127.1%
2013 103.38 Degree days -51.7%
2014 62.49 Degree days -39.5%
2015 142.29 Degree days +127.7%
2016 133.04 Degree days -6.5%
2017 143.9 Degree days +8.2%
2018 74.82 Degree days -48.0%
2019 110.8 Degree days +48.1%
2020 119.8 Degree days +8.1%
2021 165.64 Degree days +38.3%
2022 149.39 Degree days -9.8%
2023 186.39 Degree days +24.8%

Bulgaria compared with similar countries

  • Bulgaria's 186.39 Degree days is above the median for high income countries, which is 26.82 Degree days, 6.9× the median. (38 countries reporting)
  • Bulgaria's 186.39 Degree days is above the median for Europe & Central Asia, which is 25.22 Degree days, 7.4× the median. (30 countries reporting)

Averages by decade

DecadeAverage LowestHighest Years
1980s 54.31 Degree days 23.03 Degree days 107.98 Degree days 9
1990s 70.93 Degree days 32.55 Degree days 113.65 Degree days 10
2000s 106.9 Degree days 42.97 Degree days 183.66 Degree days 10
2010s 120.06 Degree days 62.49 Degree days 214.24 Degree days 10
2020s 155.3 Degree days 119.8 Degree days 186.39 Degree days 4

Countries ranked near Bulgaria

  1. 18 Japan 225.75 Degree days compare
  2. 19 Italy 210.52 Degree days compare
  3. 20 Portugal 207.19 Degree days compare
  4. 22 Hungary 147.42 Degree days compare
  5. 23 Croatia 144.88 Degree days compare
  6. 24 Serbia 135.28 Degree days compare

See the full ranking of 52 places →

More reference data data for Bulgaria

All data for Bulgaria →

Frequently asked questions

What is cooling and heating degree days - regions — cooling degree days in Bulgaria?
Cooling and heating degree days - regions — cooling degree days in Bulgaria was 186.39 Degree days in 2023, according to Organisation for Economic Co-operation and Development.
What is the highest cooling and heating degree days - regions — cooling degree days recorded in Bulgaria?
The highest recorded value was 214.24 Degree days in 2012.
What is the lowest cooling and heating degree days - regions — cooling degree days recorded in Bulgaria?
The lowest recorded value was 23.03 Degree days in 1983.
How does Bulgaria rank for cooling and heating degree days - regions — cooling degree days?
Bulgaria ranks 21st out of 48 countries with data for 2023.
Is cooling and heating degree days - regions — cooling degree days rising or falling in Bulgaria?
Over the last ten years it is up 80.3%. The long-run trend across the full record is rising.
Where does this Bulgaria data come from?
The figures come from Organisation for Economic Co-operation and Development, published as part of Cooling and heating degree days - Regions — Cooling degree days. Statizoid updates them automatically from the source API.

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Cooling and heating degree days - Regions — Cooling degree days in Bulgaria. Statizoid, drawing on Organisation for Economic Co-operation and Development. Retrieved 03 October 2026, from https://reference.statizoid.com/stat/cooling-and-heating-degree-days-regions-cooling-degree-days/bulgaria/

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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.