Cooling and heating degree days - Cities and FUAs in Lorient
Lorient: Cooling and heating degree days - Cities and FUAs was 1,052 Degree days in 2025. ▼ Falling
Cooling and heating degree days - Cities and FUAs in Lorient, 1950–2025
Source: Organisation for Economic Co-operation and Development. Measured in Degree days.
Analysis
In 2025, cooling and heating degree days - cities and fuas in Lorient stood at 1,052 Degree days.
That represents a change of down 12.6% on the previous year and down 4.9% over ten years.
Over the whole period, cooling and heating degree days - cities and fuas in Lorient peaked at 1,838 Degree days in 1963 and was at its lowest, 1,017 Degree days, in 2020.
Lorient ranks 864th 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 Lorient, year by year
| Year | Degree days | Change |
|---|---|---|
| 1950 | 1,419 Degree days | — |
| 1951 | 1,405 Degree days | -1.0% |
| 1952 | 1,483 Degree days | +5.6% |
| 1953 | 1,415 Degree days | -4.6% |
| 1954 | 1,446 Degree days | +2.2% |
| 1955 | 1,516 Degree days | +4.9% |
| 1956 | 1,707 Degree days | +12.6% |
| 1957 | 1,353 Degree days | -20.8% |
| 1958 | 1,445 Degree days | +6.8% |
| 1959 | 1,243 Degree days | -14.0% |
| 1960 | 1,322 Degree days | +6.4% |
| 1961 | 1,253 Degree days | -5.2% |
| 1962 | 1,664 Degree days | +32.8% |
| 1963 | 1,838 Degree days | +10.4% |
| 1964 | 1,607 Degree days | -12.5% |
| 1965 | 1,517 Degree days | -5.6% |
| 1966 | 1,336 Degree days | -11.9% |
| 1967 | 1,450 Degree days | +8.6% |
| 1968 | 1,460 Degree days | +0.7% |
| 1969 | 1,604 Degree days | +9.9% |
| 1970 | 1,484 Degree days | -7.5% |
| 1971 | 1,463 Degree days | -1.4% |
| 1972 | 1,526 Degree days | +4.4% |
| 1973 | 1,559 Degree days | +2.1% |
| 1974 | 1,387 Degree days | -11.1% |
| 1975 | 1,479 Degree days | +6.7% |
| 1976 | 1,486 Degree days | +0.5% |
| 1977 | 1,420 Degree days | -4.4% |
| 1978 | 1,398 Degree days | -1.6% |
| 1979 | 1,542 Degree days | +10.3% |
| 1980 | 1,569 Degree days | +1.7% |
| 1981 | 1,411 Degree days | -10.1% |
| 1982 | 1,268 Degree days | -10.1% |
| 1983 | 1,472 Degree days | +16.1% |
| 1984 | 1,430 Degree days | -2.8% |
| 1985 | 1,577 Degree days | +10.3% |
| 1986 | 1,654 Degree days | +4.9% |
| 1987 | 1,624 Degree days | -1.8% |
| 1988 | 1,245 Degree days | -23.3% |
| 1989 | 1,217 Degree days | -2.3% |
| 1990 | 1,135 Degree days | -6.7% |
| 1991 | 1,556 Degree days | +37.1% |
| 1992 | 1,416 Degree days | -9.0% |
| 1993 | 1,383 Degree days | -2.3% |
| 1994 | 1,138 Degree days | -17.7% |
| 1995 | 1,227 Degree days | +7.9% |
| 1996 | 1,538 Degree days | +25.3% |
| 1997 | 1,248 Degree days | -18.9% |
| 1998 | 1,326 Degree days | +6.2% |
| 1999 | 1,158 Degree days | -12.7% |
| 2000 | 1,264 Degree days | +9.1% |
| 2001 | 1,379 Degree days | +9.1% |
| 2002 | 1,134 Degree days | -17.7% |
| 2003 | 1,310 Degree days | +15.5% |
| 2004 | 1,344 Degree days | +2.6% |
| 2005 | 1,343 Degree days | -0.0% |
| 2006 | 1,303 Degree days | -3.0% |
| 2007 | 1,151 Degree days | -11.7% |
| 2008 | 1,345 Degree days | +16.9% |
| 2009 | 1,357 Degree days | +0.9% |
| 2010 | 1,676 Degree days | +23.5% |
| 2011 | 1,060 Degree days | -36.8% |
| 2012 | 1,328 Degree days | +25.3% |
| 2013 | 1,433 Degree days | +7.9% |
| 2014 | 1,093 Degree days | -23.7% |
| 2015 | 1,107 Degree days | +1.3% |
| 2016 | 1,267 Degree days | +14.5% |
| 2017 | 1,208 Degree days | -4.7% |
| 2018 | 1,218 Degree days | +0.8% |
| 2019 | 1,177 Degree days | -3.3% |
| 2020 | 1,017 Degree days | -13.6% |
| 2021 | 1,303 Degree days | +28.1% |
| 2022 | 1,056 Degree days | -18.9% |
| 2023 | 1,166 Degree days | +10.4% |
| 2024 | 1,204 Degree days | +3.2% |
| 2025 | 1,052 Degree days | -12.6% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1950s | 1,443 Degree days | 1,243 Degree days | 1,707 Degree days | 10 |
| 1960s | 1,505 Degree days | 1,253 Degree days | 1,838 Degree days | 10 |
| 1970s | 1,475 Degree days | 1,387 Degree days | 1,559 Degree days | 10 |
| 1980s | 1,447 Degree days | 1,217 Degree days | 1,654 Degree days | 10 |
| 1990s | 1,312 Degree days | 1,135 Degree days | 1,556 Degree days | 10 |
| 2000s | 1,293 Degree days | 1,134 Degree days | 1,379 Degree days | 10 |
| 2010s | 1,257 Degree days | 1,060 Degree days | 1,676 Degree days | 10 |
| 2020s | 1,133 Degree days | 1,017 Degree days | 1,303 Degree days | 6 |
More reference data data for Lorient
- Cooling and heating degree days - Cities and FUAs — Cooling degree 15.84 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in cooling 2.64 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating -302.31 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating -101.3 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs, annual growth rate -12.64 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs — Change in cooling 254.55 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs — Cooling degree 37.9 % change on previous year (2025)
- Precipitation - Cities and FUAs — Extreme precipitation days 5.33 Days per year (2024)
- Precipitation - Cities and FUAs — Change in extreme precipitation 1.03 Days per year (2024)
- Dependency ratio - Cities and FUAs 36.6 Percentage of population aged 15-64 years (2022)
Frequently asked questions
- What is cooling and heating degree days - cities and fuas in Lorient?
- Cooling and heating degree days - cities and fuas in Lorient was 1,052 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 Lorient?
- The highest recorded value was 1,838 Degree days in 1963.
- What is the lowest cooling and heating degree days - cities and fuas recorded in Lorient?
- The lowest recorded value was 1,017 Degree days in 2020.
- How does Lorient rank for cooling and heating degree days - cities and fuas?
- Lorient ranks 864th out of 1314 regions with data for 2025.
- Is cooling and heating degree days - cities and fuas rising or falling in Lorient?
- Over the last ten years it is down 4.9%. The long-run trend across the full record is falling.
- Where does this Lorient 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