Cooling and heating degree days - Cities and FUAs in Ulm
Ulm: Cooling and heating degree days - Cities and FUAs was 2,343 Degree days in 2025. ▼ Falling
Cooling and heating degree days - Cities and FUAs in Ulm, 1950–2025
Source: Organisation for Economic Co-operation and Development. Measured in Degree days.
Analysis
Ulm recorded 2,343 Degree days for cooling and heating degree days - cities and fuas in 2025.
The figure is up 2.8% on the previous year and down 3.7% over ten years.
Over the whole period, cooling and heating degree days - cities and fuas in Ulm peaked at 3,352 Degree days in 1956 and was at its lowest, 2,205 Degree days, in 2014.
That places Ulm 229th 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 Ulm, year by year
| Year | Degree days | Change |
|---|---|---|
| 1950 | 2,859 Degree days | — |
| 1951 | 2,748 Degree days | -3.9% |
| 1952 | 3,114 Degree days | +13.3% |
| 1953 | 2,837 Degree days | -8.9% |
| 1954 | 3,061 Degree days | +7.9% |
| 1955 | 3,139 Degree days | +2.5% |
| 1956 | 3,352 Degree days | +6.8% |
| 1957 | 2,804 Degree days | -16.3% |
| 1958 | 2,972 Degree days | +6.0% |
| 1959 | 2,688 Degree days | -9.6% |
| 1960 | 2,832 Degree days | +5.4% |
| 1961 | 2,587 Degree days | -8.6% |
| 1962 | 3,318 Degree days | +28.2% |
| 1963 | 3,322 Degree days | +0.1% |
| 1964 | 2,974 Degree days | -10.5% |
| 1965 | 3,070 Degree days | +3.3% |
| 1966 | 2,782 Degree days | -9.4% |
| 1967 | 2,775 Degree days | -0.3% |
| 1968 | 2,946 Degree days | +6.2% |
| 1969 | 3,242 Degree days | +10.0% |
| 1970 | 3,078 Degree days | -5.0% |
| 1971 | 2,930 Degree days | -4.8% |
| 1972 | 2,999 Degree days | +2.4% |
| 1973 | 3,115 Degree days | +3.9% |
| 1974 | 2,719 Degree days | -12.7% |
| 1975 | 2,841 Degree days | +4.5% |
| 1976 | 2,960 Degree days | +4.2% |
| 1977 | 2,718 Degree days | -8.2% |
| 1978 | 3,136 Degree days | +15.4% |
| 1979 | 2,909 Degree days | -7.2% |
| 1980 | 3,067 Degree days | +5.4% |
| 1981 | 2,926 Degree days | -4.6% |
| 1982 | 2,779 Degree days | -5.0% |
| 1983 | 2,801 Degree days | +0.8% |
| 1984 | 3,011 Degree days | +7.5% |
| 1985 | 3,151 Degree days | +4.7% |
| 1986 | 2,981 Degree days | -5.4% |
| 1987 | 3,025 Degree days | +1.5% |
| 1988 | 2,623 Degree days | -13.3% |
| 1989 | 2,515 Degree days | -4.1% |
| 1990 | 2,524 Degree days | +0.4% |
| 1991 | 2,867 Degree days | +13.6% |
| 1992 | 2,580 Degree days | -10.0% |
| 1993 | 2,725 Degree days | +5.6% |
| 1994 | 2,336 Degree days | -14.3% |
| 1995 | 2,754 Degree days | +17.9% |
| 1996 | 3,167 Degree days | +15.0% |
| 1997 | 2,742 Degree days | -13.4% |
| 1998 | 2,722 Degree days | -0.8% |
| 1999 | 2,676 Degree days | -1.7% |
| 2000 | 2,460 Degree days | -8.1% |
| 2001 | 2,657 Degree days | +8.0% |
| 2002 | 2,445 Degree days | -8.0% |
| 2003 | 2,728 Degree days | +11.6% |
| 2004 | 2,808 Degree days | +2.9% |
| 2005 | 2,841 Degree days | +1.2% |
| 2006 | 2,649 Degree days | -6.8% |
| 2007 | 2,469 Degree days | -6.8% |
| 2008 | 2,620 Degree days | +6.1% |
| 2009 | 2,675 Degree days | +2.1% |
| 2010 | 3,092 Degree days | +15.6% |
| 2011 | 2,448 Degree days | -20.8% |
| 2012 | 2,666 Degree days | +8.9% |
| 2013 | 2,816 Degree days | +5.6% |
| 2014 | 2,205 Degree days | -21.7% |
| 2015 | 2,433 Degree days | +10.4% |
| 2016 | 2,573 Degree days | +5.7% |
| 2017 | 2,605 Degree days | +1.2% |
| 2018 | 2,334 Degree days | -10.4% |
| 2019 | 2,438 Degree days | +4.5% |
| 2020 | 2,331 Degree days | -4.4% |
| 2021 | 2,698 Degree days | +15.7% |
| 2022 | 2,286 Degree days | -15.3% |
| 2023 | 2,341 Degree days | +2.4% |
| 2024 | 2,280 Degree days | -2.6% |
| 2025 | 2,343 Degree days | +2.8% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1950s | 2,958 Degree days | 2,688 Degree days | 3,352 Degree days | 10 |
| 1960s | 2,985 Degree days | 2,587 Degree days | 3,322 Degree days | 10 |
| 1970s | 2,941 Degree days | 2,718 Degree days | 3,136 Degree days | 10 |
| 1980s | 2,888 Degree days | 2,515 Degree days | 3,151 Degree days | 10 |
| 1990s | 2,709 Degree days | 2,336 Degree days | 3,167 Degree days | 10 |
| 2000s | 2,635 Degree days | 2,445 Degree days | 2,841 Degree days | 10 |
| 2010s | 2,561 Degree days | 2,205 Degree days | 3,092 Degree days | 10 |
| 2020s | 2,380 Degree days | 2,280 Degree days | 2,698 Degree days | 6 |
More reference data data for Ulm
- Cooling and heating degree days - Cities and FUAs — Cooling degree 26.73 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in cooling -12.92 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating -401.74 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating 13.54 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs, annual growth rate 2.76 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs — Change in cooling -145.33 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs — Cooling degree -60.78 % change on previous year (2025)
- Precipitation - Cities and FUAs — Extreme precipitation days 5.43 Days per year (2024)
- Precipitation - Cities and FUAs — Change in extreme precipitation 1.45 Days per year (2024)
- Dependency ratio - Cities and FUAs 28.9 Percentage of population aged 15-64 years (2025)
Frequently asked questions
- What is cooling and heating degree days - cities and fuas in Ulm?
- Cooling and heating degree days - cities and fuas in Ulm was 2,343 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 Ulm?
- The highest recorded value was 3,352 Degree days in 1956.
- What is the lowest cooling and heating degree days - cities and fuas recorded in Ulm?
- The lowest recorded value was 2,205 Degree days in 2014.
- How does Ulm rank for cooling and heating degree days - cities and fuas?
- Ulm ranks 229th out of 1314 regions with data for 2025.
- Is cooling and heating degree days - cities and fuas rising or falling in Ulm?
- Over the last ten years it is down 3.7%. The long-run trend across the full record is falling.
- Where does this Ulm 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