Cooling and heating degree days - Cities and FUAs (heating Cities) in Brest
Brest: Cooling and heating degree days - Cities and FUAs (heating Cities) was 1,040 Degree days in 2025. ▼ Falling
Cooling and heating degree days - Cities and FUAs in Brest, 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 Brest is 1,040 Degree days, measured in 2025. That is the lowest value across all 76 years on record.
Compared with earlier readings it is down 12.7% on the previous year and down 8.8% over ten years.
Over the whole period, cooling and heating degree days - cities and fuas in Brest peaked at 1,767 Degree days in 1963 and was at its lowest, 1,040 Degree days, in 2025.
That places Brest 868th out of 1314 regions with data for 2025, putting it 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 (heating Cities) in Brest, year by year
| Year | Degree days | Change |
|---|---|---|
| 1950 | 1,356 Degree days | — |
| 1951 | 1,423 Degree days | +4.9% |
| 1952 | 1,453 Degree days | +2.1% |
| 1953 | 1,380 Degree days | -5.0% |
| 1954 | 1,432 Degree days | +3.8% |
| 1955 | 1,489 Degree days | +4.0% |
| 1956 | 1,669 Degree days | +12.0% |
| 1957 | 1,326 Degree days | -20.6% |
| 1958 | 1,430 Degree days | +7.9% |
| 1959 | 1,234 Degree days | -13.8% |
| 1960 | 1,319 Degree days | +6.9% |
| 1961 | 1,246 Degree days | -5.5% |
| 1962 | 1,621 Degree days | +30.1% |
| 1963 | 1,767 Degree days | +9.0% |
| 1964 | 1,523 Degree days | -13.8% |
| 1965 | 1,526 Degree days | +0.2% |
| 1966 | 1,307 Degree days | -14.3% |
| 1967 | 1,441 Degree days | +10.2% |
| 1968 | 1,431 Degree days | -0.7% |
| 1969 | 1,591 Degree days | +11.1% |
| 1970 | 1,462 Degree days | -8.1% |
| 1971 | 1,420 Degree days | -2.9% |
| 1972 | 1,540 Degree days | +8.4% |
| 1973 | 1,485 Degree days | -3.5% |
| 1974 | 1,411 Degree days | -5.0% |
| 1975 | 1,427 Degree days | +1.2% |
| 1976 | 1,470 Degree days | +3.0% |
| 1977 | 1,429 Degree days | -2.8% |
| 1978 | 1,392 Degree days | -2.5% |
| 1979 | 1,535 Degree days | +10.2% |
| 1980 | 1,521 Degree days | -0.9% |
| 1981 | 1,403 Degree days | -7.7% |
| 1982 | 1,283 Degree days | -8.6% |
| 1983 | 1,430 Degree days | +11.5% |
| 1984 | 1,429 Degree days | -0.1% |
| 1985 | 1,529 Degree days | +7.0% |
| 1986 | 1,635 Degree days | +6.9% |
| 1987 | 1,569 Degree days | -4.0% |
| 1988 | 1,259 Degree days | -19.8% |
| 1989 | 1,180 Degree days | -6.3% |
| 1990 | 1,108 Degree days | -6.1% |
| 1991 | 1,533 Degree days | +38.4% |
| 1992 | 1,399 Degree days | -8.8% |
| 1993 | 1,364 Degree days | -2.5% |
| 1994 | 1,168 Degree days | -14.4% |
| 1995 | 1,224 Degree days | +4.8% |
| 1996 | 1,510 Degree days | +23.4% |
| 1997 | 1,242 Degree days | -17.8% |
| 1998 | 1,254 Degree days | +1.0% |
| 1999 | 1,164 Degree days | -7.2% |
| 2000 | 1,293 Degree days | +11.1% |
| 2001 | 1,334 Degree days | +3.2% |
| 2002 | 1,136 Degree days | -14.9% |
| 2003 | 1,267 Degree days | +11.5% |
| 2004 | 1,307 Degree days | +3.2% |
| 2005 | 1,291 Degree days | -1.2% |
| 2006 | 1,257 Degree days | -2.6% |
| 2007 | 1,141 Degree days | -9.3% |
| 2008 | 1,327 Degree days | +16.3% |
| 2009 | 1,349 Degree days | +1.7% |
| 2010 | 1,633 Degree days | +21.0% |
| 2011 | 1,097 Degree days | -32.8% |
| 2012 | 1,322 Degree days | +20.6% |
| 2013 | 1,420 Degree days | +7.4% |
| 2014 | 1,122 Degree days | -21.0% |
| 2015 | 1,140 Degree days | +1.6% |
| 2016 | 1,263 Degree days | +10.8% |
| 2017 | 1,182 Degree days | -6.4% |
| 2018 | 1,239 Degree days | +4.9% |
| 2019 | 1,186 Degree days | -4.3% |
| 2020 | 1,067 Degree days | -10.1% |
| 2021 | 1,262 Degree days | +18.3% |
| 2022 | 1,054 Degree days | -16.5% |
| 2023 | 1,169 Degree days | +10.9% |
| 2024 | 1,190 Degree days | +1.8% |
| 2025 | 1,040 Degree days | -12.7% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1950s | 1,419 Degree days | 1,234 Degree days | 1,669 Degree days | 10 |
| 1960s | 1,477 Degree days | 1,246 Degree days | 1,767 Degree days | 10 |
| 1970s | 1,457 Degree days | 1,392 Degree days | 1,540 Degree days | 10 |
| 1980s | 1,424 Degree days | 1,180 Degree days | 1,635 Degree days | 10 |
| 1990s | 1,297 Degree days | 1,108 Degree days | 1,533 Degree days | 10 |
| 2000s | 1,270 Degree days | 1,136 Degree days | 1,349 Degree days | 10 |
| 2010s | 1,260 Degree days | 1,097 Degree days | 1,633 Degree days | 10 |
| 2020s | 1,130 Degree days | 1,040 Degree days | 1,262 Degree days | 6 |
More reference data data for Brest
- Cooling and heating degree days - Cities and FUAs — Cooling degree 3.96 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in cooling -0.8443 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating -294.18 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating -105.04 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs, annual growth rate -12.66 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs — Change in cooling 47.65 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs — Cooling degree 24.06 % change on previous year (2025)
- Precipitation - Cities and FUAs — Extreme precipitation days 5.5 Days per year (2024)
- Precipitation - Cities and FUAs — Change in extreme precipitation 1.68 Days per year (2024)
- Dependency ratio - Cities and FUAs 25.7 Percentage of population aged 15-64 years (2022)
Frequently asked questions
- What is cooling and heating degree days - cities and fuas in Brest?
- Cooling and heating degree days - cities and fuas in Brest was 1,040 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 Brest?
- The highest recorded value was 1,767 Degree days in 1963.
- What is the lowest cooling and heating degree days - cities and fuas recorded in Brest?
- The lowest recorded value was 1,040 Degree days in 2025.
- How does Brest rank for cooling and heating degree days - cities and fuas?
- Brest ranks 868th out of 1314 regions with data for 2025.
- Is cooling and heating degree days - cities and fuas rising or falling in Brest?
- Over the last ten years it is down 8.8%. The long-run trend across the full record is falling.
- Where does this Brest 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