Cooling and heating degree days - Cities and FUAs in Saint-Brieuc
Saint-Brieuc: Cooling and heating degree days - Cities and FUAs was 889.55 Degree days in 2025. ▼ Falling
Cooling and heating degree days - Cities and FUAs in Saint-Brieuc, 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 Saint-Brieuc is 889.55 Degree days, measured in 2025. That is the lowest value across all 76 years on record.
The figure is down 40.6% on the previous year and down 38.0% over ten years.
Over the whole period, cooling and heating degree days - cities and fuas in Saint-Brieuc peaked at 2,173 Degree days in 1963 and was at its lowest, 889.55 Degree days, in 2025.
That places Saint-Brieuc 924th 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 in Saint-Brieuc, year by year
| Year | Degree days | Change |
|---|---|---|
| 1950 | 1,762 Degree days | — |
| 1951 | 1,791 Degree days | +1.6% |
| 1952 | 1,842 Degree days | +2.9% |
| 1953 | 1,764 Degree days | -4.2% |
| 1954 | 1,816 Degree days | +3.0% |
| 1955 | 1,870 Degree days | +3.0% |
| 1956 | 2,068 Degree days | +10.6% |
| 1957 | 1,650 Degree days | -20.2% |
| 1958 | 1,765 Degree days | +7.0% |
| 1959 | 1,588 Degree days | -10.0% |
| 1960 | 1,677 Degree days | +5.6% |
| 1961 | 1,594 Degree days | -4.9% |
| 1962 | 2,029 Degree days | +27.3% |
| 1963 | 2,173 Degree days | +7.1% |
| 1964 | 1,922 Degree days | -11.6% |
| 1965 | 1,880 Degree days | -2.2% |
| 1966 | 1,692 Degree days | -10.0% |
| 1967 | 1,810 Degree days | +6.9% |
| 1968 | 1,820 Degree days | +0.6% |
| 1969 | 1,935 Degree days | +6.3% |
| 1970 | 1,827 Degree days | -5.6% |
| 1971 | 1,803 Degree days | -1.3% |
| 1972 | 1,884 Degree days | +4.4% |
| 1973 | 1,894 Degree days | +0.5% |
| 1974 | 1,755 Degree days | -7.3% |
| 1975 | 1,810 Degree days | +3.1% |
| 1976 | 1,833 Degree days | +1.3% |
| 1977 | 1,772 Degree days | -3.4% |
| 1978 | 1,790 Degree days | +1.0% |
| 1979 | 1,932 Degree days | +7.9% |
| 1980 | 1,904 Degree days | -1.4% |
| 1981 | 1,733 Degree days | -9.0% |
| 1982 | 1,612 Degree days | -7.0% |
| 1983 | 1,762 Degree days | +9.4% |
| 1984 | 1,804 Degree days | +2.4% |
| 1985 | 1,954 Degree days | +8.3% |
| 1986 | 1,982 Degree days | +1.4% |
| 1987 | 1,952 Degree days | -1.5% |
| 1988 | 1,572 Degree days | -19.4% |
| 1989 | 1,519 Degree days | -3.4% |
| 1990 | 1,417 Degree days | -6.7% |
| 1991 | 1,870 Degree days | +32.0% |
| 1992 | 1,721 Degree days | -8.0% |
| 1993 | 1,736 Degree days | +0.9% |
| 1994 | 1,469 Degree days | -15.4% |
| 1995 | 1,576 Degree days | +7.3% |
| 1996 | 1,895 Degree days | +20.2% |
| 1997 | 1,573 Degree days | -17.0% |
| 1998 | 1,625 Degree days | +3.3% |
| 1999 | 1,471 Degree days | -9.5% |
| 2000 | 1,614 Degree days | +9.7% |
| 2001 | 1,660 Degree days | +2.9% |
| 2002 | 1,418 Degree days | -14.6% |
| 2003 | 1,622 Degree days | +14.4% |
| 2004 | 1,638 Degree days | +1.0% |
| 2005 | 1,605 Degree days | -2.0% |
| 2006 | 1,586 Degree days | -1.2% |
| 2007 | 1,473 Degree days | -7.2% |
| 2008 | 1,667 Degree days | +13.2% |
| 2009 | 1,682 Degree days | +0.9% |
| 2010 | 2,002 Degree days | +19.1% |
| 2011 | 1,371 Degree days | -31.5% |
| 2012 | 1,652 Degree days | +20.5% |
| 2013 | 1,760 Degree days | +6.5% |
| 2014 | 1,405 Degree days | -20.2% |
| 2015 | 1,434 Degree days | +2.1% |
| 2016 | 1,615 Degree days | +12.6% |
| 2017 | 1,480 Degree days | -8.3% |
| 2018 | 1,508 Degree days | +1.9% |
| 2019 | 1,491 Degree days | -1.1% |
| 2020 | 1,333 Degree days | -10.6% |
| 2021 | 1,604 Degree days | +20.4% |
| 2022 | 1,339 Degree days | -16.5% |
| 2023 | 1,450 Degree days | +8.4% |
| 2024 | 1,499 Degree days | +3.3% |
| 2025 | 889.55 Degree days | -40.6% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1950s | 1,792 Degree days | 1,588 Degree days | 2,068 Degree days | 10 |
| 1960s | 1,853 Degree days | 1,594 Degree days | 2,173 Degree days | 10 |
| 1970s | 1,830 Degree days | 1,755 Degree days | 1,932 Degree days | 10 |
| 1980s | 1,780 Degree days | 1,519 Degree days | 1,982 Degree days | 10 |
| 1990s | 1,635 Degree days | 1,417 Degree days | 1,895 Degree days | 10 |
| 2000s | 1,596 Degree days | 1,418 Degree days | 1,682 Degree days | 10 |
| 2010s | 1,572 Degree days | 1,371 Degree days | 2,002 Degree days | 10 |
| 2020s | 1,352 Degree days | 889.55 Degree days | 1,604 Degree days | 6 |
More reference data data for Saint-Brieuc
- Cooling and heating degree days - Cities and FUAs — Cooling degree 8.01 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in cooling -8.64 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating -784.19 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating -347.97 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs, annual growth rate -40.64 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs — Change in cooling -866.72 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs — Cooling degree -49.14 % change on previous year (2025)
- Precipitation - Cities and FUAs — Extreme precipitation days 1.67 Days per year (2024)
- Precipitation - Cities and FUAs — Change in extreme precipitation -0.2333 Days per year (2024)
- Dependency ratio - Cities and FUAs 40.3 Percentage of population aged 15-64 years (2022)
Frequently asked questions
- What is cooling and heating degree days - cities and fuas in Saint-Brieuc?
- Cooling and heating degree days - cities and fuas in Saint-Brieuc was 889.55 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 Saint-Brieuc?
- The highest recorded value was 2,173 Degree days in 1963.
- What is the lowest cooling and heating degree days - cities and fuas recorded in Saint-Brieuc?
- The lowest recorded value was 889.55 Degree days in 2025.
- How does Saint-Brieuc rank for cooling and heating degree days - cities and fuas?
- Saint-Brieuc ranks 924th out of 1314 regions with data for 2025.
- Is cooling and heating degree days - cities and fuas rising or falling in Saint-Brieuc?
- Over the last ten years it is down 38.0%. The long-run trend across the full record is falling.
- Where does this Saint-Brieuc 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