Cooling and heating degree days - Cities and FUAs in Bergisch Gladbach
Bergisch Gladbach: Cooling and heating degree days - Cities and FUAs was 2,295 Degree days in 2025. ▼ Falling
Cooling and heating degree days - Cities and FUAs in Bergisch Gladbach, 1950–2025
Source: Organisation for Economic Co-operation and Development. Measured in Degree days.
Analysis
Bergisch Gladbach recorded 2,295 Degree days for cooling and heating degree days - cities and fuas in 2025.
Compared with earlier readings it is up 21.8% on the previous year and up 14.2% over ten years.
Over the whole period, cooling and heating degree days - cities and fuas in Bergisch Gladbach peaked at 2,879 Degree days in 1963 and was at its lowest, 1,745 Degree days, in 2014.
That places Bergisch Gladbach 255th out of 1314 regions with data for 2025, putting it in the top quarter.
The long-run direction has been consistently falling across the 76 years of available data.
Cooling and heating degree days - Cities and FUAs in Bergisch Gladbach, year by year
| Year | Degree days | Change |
|---|---|---|
| 1950 | 2,475 Degree days | — |
| 1951 | 2,285 Degree days | -7.7% |
| 1952 | 2,603 Degree days | +13.9% |
| 1953 | 2,262 Degree days | -13.1% |
| 1954 | 2,513 Degree days | +11.1% |
| 1955 | 2,744 Degree days | +9.2% |
| 1956 | 2,870 Degree days | +4.6% |
| 1957 | 2,238 Degree days | -22.0% |
| 1958 | 2,433 Degree days | +8.8% |
| 1959 | 2,134 Degree days | -12.3% |
| 1960 | 2,223 Degree days | +4.1% |
| 1961 | 2,136 Degree days | -3.9% |
| 1962 | 2,797 Degree days | +30.9% |
| 1963 | 2,879 Degree days | +2.9% |
| 1964 | 2,479 Degree days | -13.9% |
| 1965 | 2,534 Degree days | +2.2% |
| 1966 | 2,298 Degree days | -9.3% |
| 1967 | 2,285 Degree days | -0.6% |
| 1968 | 2,483 Degree days | +8.7% |
| 1969 | 2,709 Degree days | +9.1% |
| 1970 | 2,591 Degree days | -4.4% |
| 1971 | 2,357 Degree days | -9.0% |
| 1972 | 2,473 Degree days | +4.9% |
| 1973 | 2,533 Degree days | +2.4% |
| 1974 | 2,201 Degree days | -13.1% |
| 1975 | 2,314 Degree days | +5.1% |
| 1976 | 2,416 Degree days | +4.4% |
| 1977 | 2,238 Degree days | -7.4% |
| 1978 | 2,522 Degree days | +12.7% |
| 1979 | 2,674 Degree days | +6.0% |
| 1980 | 2,537 Degree days | -5.1% |
| 1981 | 2,468 Degree days | -2.7% |
| 1982 | 2,281 Degree days | -7.6% |
| 1983 | 2,325 Degree days | +1.9% |
| 1984 | 2,453 Degree days | +5.5% |
| 1985 | 2,756 Degree days | +12.4% |
| 1986 | 2,577 Degree days | -6.5% |
| 1987 | 2,682 Degree days | +4.1% |
| 1988 | 2,076 Degree days | -22.6% |
| 1989 | 2,026 Degree days | -2.4% |
| 1990 | 1,989 Degree days | -1.8% |
| 1991 | 2,383 Degree days | +19.8% |
| 1992 | 2,214 Degree days | -7.1% |
| 1993 | 2,322 Degree days | +4.9% |
| 1994 | 2,051 Degree days | -11.7% |
| 1995 | 2,233 Degree days | +8.9% |
| 1996 | 2,728 Degree days | +22.2% |
| 1997 | 2,298 Degree days | -15.8% |
| 1998 | 2,222 Degree days | -3.3% |
| 1999 | 2,101 Degree days | -5.5% |
| 2000 | 1,956 Degree days | -6.9% |
| 2001 | 2,221 Degree days | +13.6% |
| 2002 | 2,007 Degree days | -9.7% |
| 2003 | 2,230 Degree days | +11.2% |
| 2004 | 2,275 Degree days | +2.0% |
| 2005 | 2,167 Degree days | -4.8% |
| 2006 | 2,125 Degree days | -1.9% |
| 2007 | 1,932 Degree days | -9.1% |
| 2008 | 2,170 Degree days | +12.3% |
| 2009 | 2,191 Degree days | +1.0% |
| 2010 | 2,680 Degree days | +22.3% |
| 2011 | 1,941 Degree days | -27.6% |
| 2012 | 2,209 Degree days | +13.8% |
| 2013 | 2,386 Degree days | +8.0% |
| 2014 | 1,745 Degree days | -26.9% |
| 2015 | 2,009 Degree days | +15.1% |
| 2016 | 2,145 Degree days | +6.8% |
| 2017 | 2,050 Degree days | -4.5% |
| 2018 | 1,939 Degree days | -5.4% |
| 2019 | 1,951 Degree days | +0.6% |
| 2020 | 1,770 Degree days | -9.3% |
| 2021 | 2,184 Degree days | +23.4% |
| 2022 | 1,832 Degree days | -16.1% |
| 2023 | 1,932 Degree days | +5.5% |
| 2024 | 1,885 Degree days | -2.4% |
| 2025 | 2,295 Degree days | +21.8% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1950s | 2,456 Degree days | 2,134 Degree days | 2,870 Degree days | 10 |
| 1960s | 2,482 Degree days | 2,136 Degree days | 2,879 Degree days | 10 |
| 1970s | 2,432 Degree days | 2,201 Degree days | 2,674 Degree days | 10 |
| 1980s | 2,418 Degree days | 2,026 Degree days | 2,756 Degree days | 10 |
| 1990s | 2,254 Degree days | 1,989 Degree days | 2,728 Degree days | 10 |
| 2000s | 2,127 Degree days | 1,932 Degree days | 2,275 Degree days | 10 |
| 2010s | 2,105 Degree days | 1,745 Degree days | 2,680 Degree days | 10 |
| 2020s | 1,983 Degree days | 1,770 Degree days | 2,295 Degree days | 6 |
More reference data data for Bergisch Gladbach
- Cooling and heating degree days - Cities and FUAs — Cooling degree 45.05 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in cooling -1.95 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating 23.58 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating 106.1 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs, annual growth rate 21.76 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs — Change in cooling -114.9 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs — Cooling degree -25 % change on previous year (2025)
- Precipitation - Cities and FUAs — Extreme precipitation days 7 Days per year (2024)
- Precipitation - Cities and FUAs — Change in extreme precipitation 2.53 Days per year (2024)
- Dependency ratio - Cities and FUAs 40.9 Percentage of population aged 15-64 years (2025)
Frequently asked questions
- What is cooling and heating degree days - cities and fuas in Bergisch Gladbach?
- Cooling and heating degree days - cities and fuas in Bergisch Gladbach was 2,295 Degree days in 2025, according to Organisation for Economic Co-operation and Development.
- What is the highest cooling and heating degree days - cities and fuas recorded in Bergisch Gladbach?
- The highest recorded value was 2,879 Degree days in 1963.
- What is the lowest cooling and heating degree days - cities and fuas recorded in Bergisch Gladbach?
- The lowest recorded value was 1,745 Degree days in 2014.
- How does Bergisch Gladbach rank for cooling and heating degree days - cities and fuas?
- Bergisch Gladbach ranks 255th out of 1314 regions with data for 2025.
- Is cooling and heating degree days - cities and fuas rising or falling in Bergisch Gladbach?
- Over the last ten years it is up 14.2%. The long-run trend across the full record is falling.
- Where does this Bergisch Gladbach data come from?
- The figures come from Organisation for Economic Co-operation and Development, published as part of Cooling and heating degree days - Cities and FUAs. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 76 observations, free to reuse under OECD Terms and Conditions (attribution required).
About this data
This dataset provides indicators of Cooling and Heating Degree Days (CDDs and HDDs) for FUAs and cities. CDDs and HDDs are measurements used to estimate energy usage based on outdoor temperature. CDD measures the demand for cooling, while HDD measures the demand for heating, both calculated relative to a baseline temperature. Data sources and methodology The indicators use 0.1-degree resolution grids from the ERA5-Land dataset. 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. Annual CDDs are the sum over a year of the differences between the daily mean outdoor air temperature and the threshold temperature when the outdoor temperature is above the threshold temperature. HDDs are the sum over a year of the differences between the threshold temperature and the daily mean outdoor air temperature when the outdoor temperature is below the threshold temperature. Threshold temperatures are set to 22°C for CDDs and 15°C for HDDs. 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. Defining FUAs and cities The OECD, in cooperation with the EU, has developed a harmonised definition of functional urban areas (FUAs) to capture the economic and functional reach of cities based on daily commuting patterns (OECD, 2012). FUAs consist of: A city – defined by urban centres in the degree of urbanisation, adapted to the closest local administrative units to define a city. A commuting zone – including all local areas where at least 15% of employed residents work in the city. The delineation process includes: Assigning municipalities surrounded by a single FUA to that FUA. Excluding non-contiguous municipalities. The correspondence table between SAUs and FUAs/cities is available in parquet and csv format. The definition identifies 1 272 FUAs and 1 269 cities in all OECD member countries except Costa Rica and three accession countries. Cite this dataset OECD Regions, cities and local areas database (Cooling and heating degree days - Cities and FUAs), http://oe.cd/geostats Further information OECD Local Data Portal OECD Regions and Cities at a Glance For questions and/or comments, please email CitiesStat@oecd.org