Cooling and heating degree days - Cities and FUAs in Graz
Graz: Cooling and heating degree days - Cities and FUAs was 1,513 Degree days in 2025. ▼ Falling
Cooling and heating degree days - Cities and FUAs in Graz, 1950–2025
Source: Organisation for Economic Co-operation and Development. Measured in Degree days.
Analysis
The most recent figure for cooling and heating degree days - cities and fuas in Graz is 1,513 Degree days, measured in 2025. That is the lowest value across all 76 years on record.
Compared with earlier readings it is down 35.0% on the previous year and down 36.8% over ten years.
Over the whole period, cooling and heating degree days - cities and fuas in Graz peaked at 3,416 Degree days in 1962 and was at its lowest, 1,513 Degree days, in 2025.
Graz ranks 679th of 1314 regions on this measure, in the middle of the range.
The long-run direction has been consistently falling across the 76 years of available data.
Cooling and heating degree days - Cities and FUAs in Graz, year by year
| Year | Degree days | Change |
|---|---|---|
| 1950 | 2,905 Degree days | — |
| 1951 | 2,725 Degree days | -6.2% |
| 1952 | 3,132 Degree days | +14.9% |
| 1953 | 2,953 Degree days | -5.7% |
| 1954 | 3,200 Degree days | +8.3% |
| 1955 | 3,109 Degree days | -2.8% |
| 1956 | 3,377 Degree days | +8.6% |
| 1957 | 2,819 Degree days | -16.5% |
| 1958 | 2,957 Degree days | +4.9% |
| 1959 | 2,795 Degree days | -5.5% |
| 1960 | 2,918 Degree days | +4.4% |
| 1961 | 2,776 Degree days | -4.9% |
| 1962 | 3,416 Degree days | +23.1% |
| 1963 | 3,311 Degree days | -3.1% |
| 1964 | 3,083 Degree days | -6.9% |
| 1965 | 3,310 Degree days | +7.3% |
| 1966 | 2,866 Degree days | -13.4% |
| 1967 | 2,898 Degree days | +1.1% |
| 1968 | 3,022 Degree days | +4.3% |
| 1969 | 3,281 Degree days | +8.5% |
| 1970 | 3,142 Degree days | -4.2% |
| 1971 | 2,964 Degree days | -5.7% |
| 1972 | 3,046 Degree days | +2.8% |
| 1973 | 3,185 Degree days | +4.6% |
| 1974 | 2,788 Degree days | -12.5% |
| 1975 | 2,721 Degree days | -2.4% |
| 1976 | 3,099 Degree days | +13.9% |
| 1977 | 2,978 Degree days | -3.9% |
| 1978 | 3,246 Degree days | +9.0% |
| 1979 | 3,099 Degree days | -4.5% |
| 1980 | 3,277 Degree days | +5.7% |
| 1981 | 2,987 Degree days | -8.8% |
| 1982 | 2,934 Degree days | -1.8% |
| 1983 | 2,844 Degree days | -3.0% |
| 1984 | 3,094 Degree days | +8.8% |
| 1985 | 3,270 Degree days | +5.7% |
| 1986 | 3,189 Degree days | -2.5% |
| 1987 | 3,145 Degree days | -1.4% |
| 1988 | 2,783 Degree days | -11.5% |
| 1989 | 2,544 Degree days | -8.6% |
| 1990 | 2,637 Degree days | +3.7% |
| 1991 | 3,046 Degree days | +15.5% |
| 1992 | 2,661 Degree days | -12.7% |
| 1993 | 2,837 Degree days | +6.6% |
| 1994 | 2,475 Degree days | -12.8% |
| 1995 | 2,925 Degree days | +18.2% |
| 1996 | 3,190 Degree days | +9.0% |
| 1997 | 2,841 Degree days | -10.9% |
| 1998 | 2,745 Degree days | -3.4% |
| 1999 | 2,768 Degree days | +0.9% |
| 2000 | 2,447 Degree days | -11.6% |
| 2001 | 2,641 Degree days | +7.9% |
| 2002 | 2,494 Degree days | -5.5% |
| 2003 | 2,872 Degree days | +15.2% |
| 2004 | 2,835 Degree days | -1.3% |
| 2005 | 3,030 Degree days | +6.9% |
| 2006 | 2,860 Degree days | -5.6% |
| 2007 | 2,509 Degree days | -12.3% |
| 2008 | 2,500 Degree days | -0.3% |
| 2009 | 2,635 Degree days | +5.4% |
| 2010 | 3,040 Degree days | +15.4% |
| 2011 | 2,668 Degree days | -12.2% |
| 2012 | 2,603 Degree days | -2.4% |
| 2013 | 2,670 Degree days | +2.6% |
| 2014 | 2,220 Degree days | -16.9% |
| 2015 | 2,394 Degree days | +7.9% |
| 2016 | 2,437 Degree days | +1.8% |
| 2017 | 2,543 Degree days | +4.4% |
| 2018 | 2,400 Degree days | -5.6% |
| 2019 | 2,317 Degree days | -3.5% |
| 2020 | 2,449 Degree days | +5.7% |
| 2021 | 2,724 Degree days | +11.2% |
| 2022 | 2,366 Degree days | -13.1% |
| 2023 | 2,464 Degree days | +4.1% |
| 2024 | 2,327 Degree days | -5.6% |
| 2025 | 1,513 Degree days | -35.0% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1950s | 2,997 Degree days | 2,725 Degree days | 3,377 Degree days | 10 |
| 1960s | 3,088 Degree days | 2,776 Degree days | 3,416 Degree days | 10 |
| 1970s | 3,027 Degree days | 2,721 Degree days | 3,246 Degree days | 10 |
| 1980s | 3,007 Degree days | 2,544 Degree days | 3,277 Degree days | 10 |
| 1990s | 2,813 Degree days | 2,475 Degree days | 3,190 Degree days | 10 |
| 2000s | 2,682 Degree days | 2,447 Degree days | 3,030 Degree days | 10 |
| 2010s | 2,529 Degree days | 2,220 Degree days | 3,040 Degree days | 10 |
| 2020s | 2,307 Degree days | 1,513 Degree days | 2,724 Degree days | 6 |
More reference data data for Graz
- Cooling and heating degree days by NUTS 2 regions - annual data 8.37 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs — Cooling degree 27.27 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in cooling -26.1 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating -1,313 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating -163.41 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs — Cooling degree -76.87 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs, annual growth rate -35.01 % change on previous year (2025)
- Cooling and heating degree days by NUTS 2 regions - monthly data 1.84 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs — Change in cooling -140.44 % change on previous year (2025)
- Precipitation - Cities and FUAs — Change in extreme precipitation 4.83 Days per year (2024)
Frequently asked questions
- What is cooling and heating degree days - cities and fuas in Graz?
- Cooling and heating degree days - cities and fuas in Graz was 1,513 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 Graz?
- The highest recorded value was 3,416 Degree days in 1962.
- What is the lowest cooling and heating degree days - cities and fuas recorded in Graz?
- The lowest recorded value was 1,513 Degree days in 2025.
- How does Graz rank for cooling and heating degree days - cities and fuas?
- Graz ranks 679th out of 1314 regions with data for 2025.
- Is cooling and heating degree days - cities and fuas rising or falling in Graz?
- Over the last ten years it is down 36.8%. The long-run trend across the full record is falling.
- Where does this Graz 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