Cooling and heating degree days - Cities and FUAs (heating Cities) in Oslo
Oslo: Cooling and heating degree days - Cities and FUAs (heating Cities) was 4,051 Degree days in 2025. ▼ Falling
Cooling and heating degree days - Cities and FUAs in Oslo, 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 Oslo is 4,051 Degree days, measured in 2025.
Compared with earlier readings it is down 9.4% on the previous year and down 5.0% over ten years.
Over the whole period, cooling and heating degree days - cities and fuas in Oslo peaked at 5,600 Degree days in 1966 and was at its lowest, 4,006 Degree days, in 2020.
Oslo ranks 10th of 1314 regions on this measure, in the top 10%.
The long-run direction has been consistently falling across the 76 years of available data.
Cooling and heating degree days - Cities and FUAs (heating Cities) in Oslo, year by year
| Year | Degree days | Change |
|---|---|---|
| 1950 | 5,137 Degree days | — |
| 1951 | 4,939 Degree days | -3.8% |
| 1952 | 5,365 Degree days | +8.6% |
| 1953 | 4,561 Degree days | -15.0% |
| 1954 | 5,145 Degree days | +12.8% |
| 1955 | 5,261 Degree days | +2.3% |
| 1956 | 5,427 Degree days | +3.1% |
| 1957 | 5,004 Degree days | -7.8% |
| 1958 | 5,301 Degree days | +5.9% |
| 1959 | 4,664 Degree days | -12.0% |
| 1960 | 5,084 Degree days | +9.0% |
| 1961 | 4,955 Degree days | -2.5% |
| 1962 | 5,558 Degree days | +12.2% |
| 1963 | 5,581 Degree days | +0.4% |
| 1964 | 5,208 Degree days | -6.7% |
| 1965 | 5,487 Degree days | +5.3% |
| 1966 | 5,600 Degree days | +2.1% |
| 1967 | 4,933 Degree days | -11.9% |
| 1968 | 5,321 Degree days | +7.9% |
| 1969 | 5,331 Degree days | +0.2% |
| 1970 | 5,365 Degree days | +0.6% |
| 1971 | 4,844 Degree days | -9.7% |
| 1972 | 4,832 Degree days | -0.3% |
| 1973 | 4,888 Degree days | +1.2% |
| 1974 | 4,609 Degree days | -5.7% |
| 1975 | 4,558 Degree days | -1.1% |
| 1976 | 5,110 Degree days | +12.1% |
| 1977 | 5,081 Degree days | -0.6% |
| 1978 | 5,223 Degree days | +2.8% |
| 1979 | 5,482 Degree days | +4.9% |
| 1980 | 5,307 Degree days | -3.2% |
| 1981 | 5,288 Degree days | -0.3% |
| 1982 | 4,885 Degree days | -7.6% |
| 1983 | 4,600 Degree days | -5.8% |
| 1984 | 4,734 Degree days | +2.9% |
| 1985 | 5,508 Degree days | +16.3% |
| 1986 | 5,143 Degree days | -6.6% |
| 1987 | 5,388 Degree days | +4.8% |
| 1988 | 4,721 Degree days | -12.4% |
| 1989 | 4,308 Degree days | -8.7% |
| 1990 | 4,186 Degree days | -2.8% |
| 1991 | 4,632 Degree days | +10.7% |
| 1992 | 4,598 Degree days | -0.7% |
| 1993 | 4,859 Degree days | +5.7% |
| 1994 | 4,944 Degree days | +1.7% |
| 1995 | 4,829 Degree days | -2.3% |
| 1996 | 5,270 Degree days | +9.1% |
| 1997 | 4,623 Degree days | -12.3% |
| 1998 | 4,800 Degree days | +3.8% |
| 1999 | 4,589 Degree days | -4.4% |
| 2000 | 4,263 Degree days | -7.1% |
| 2001 | 4,955 Degree days | +16.2% |
| 2002 | 4,662 Degree days | -5.9% |
| 2003 | 4,589 Degree days | -1.6% |
| 2004 | 4,544 Degree days | -1.0% |
| 2005 | 4,346 Degree days | -4.4% |
| 2006 | 4,376 Degree days | +0.7% |
| 2007 | 4,486 Degree days | +2.5% |
| 2008 | 4,450 Degree days | -0.8% |
| 2009 | 4,713 Degree days | +5.9% |
| 2010 | 5,471 Degree days | +16.1% |
| 2011 | 4,408 Degree days | -19.4% |
| 2012 | 4,827 Degree days | +9.5% |
| 2013 | 4,703 Degree days | -2.6% |
| 2014 | 4,061 Degree days | -13.6% |
| 2015 | 4,267 Degree days | +5.1% |
| 2016 | 4,456 Degree days | +4.4% |
| 2017 | 4,528 Degree days | +1.6% |
| 2018 | 4,471 Degree days | -1.3% |
| 2019 | 4,463 Degree days | -0.2% |
| 2020 | 4,006 Degree days | -10.2% |
| 2021 | 4,623 Degree days | +15.4% |
| 2022 | 4,322 Degree days | -6.5% |
| 2023 | 4,844 Degree days | +12.1% |
| 2024 | 4,472 Degree days | -7.7% |
| 2025 | 4,051 Degree days | -9.4% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1950s | 5,080 Degree days | 4,561 Degree days | 5,427 Degree days | 10 |
| 1960s | 5,306 Degree days | 4,933 Degree days | 5,600 Degree days | 10 |
| 1970s | 4,999 Degree days | 4,558 Degree days | 5,482 Degree days | 10 |
| 1980s | 4,988 Degree days | 4,308 Degree days | 5,508 Degree days | 10 |
| 1990s | 4,733 Degree days | 4,186 Degree days | 5,270 Degree days | 10 |
| 2000s | 4,538 Degree days | 4,263 Degree days | 4,955 Degree days | 10 |
| 2010s | 4,565 Degree days | 4,061 Degree days | 5,471 Degree days | 10 |
| 2020s | 4,386 Degree days | 4,006 Degree days | 4,844 Degree days | 6 |
More reference data data for Oslo
- Cooling and heating degree days - Cities and FUAs — Change in cooling 9.21 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs — Cooling degree 18 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs — Cooling degree 2.65 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in cooling -3.98 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating -707.46 Degree days (2025)
- Cooling and heating degree days by NUTS 2 regions - annual data -7.42 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs, annual growth rate -9.41 % change on previous year (2025)
- Cooling and heating degree days by NUTS 2 regions - monthly data -8.9 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating -146.94 % change on previous year (2025)
- Precipitation - Cities and FUAs — Extreme precipitation days 6.79 Days per year (2024)
Frequently asked questions
- What is cooling and heating degree days - cities and fuas in Oslo?
- Cooling and heating degree days - cities and fuas in Oslo was 4,051 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 Oslo?
- The highest recorded value was 5,600 Degree days in 1966.
- What is the lowest cooling and heating degree days - cities and fuas recorded in Oslo?
- The lowest recorded value was 4,006 Degree days in 2020.
- How does Oslo rank for cooling and heating degree days - cities and fuas?
- Oslo ranks 10th out of 1314 regions with data for 2025.
- Is cooling and heating degree days - cities and fuas rising or falling in Oslo?
- Over the last ten years it is down 5.0%. The long-run trend across the full record is falling.
- Where does this Oslo 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