Cooling and heating degree days - Cities and FUAs in Calais
Calais: Cooling and heating degree days - Cities and FUAs was 1,463 Degree days in 2025. ▼ Falling
Cooling and heating degree days - Cities and FUAs in Calais, 1950–2025
Source: Organisation for Economic Co-operation and Development. Measured in Degree days.
Analysis
Calais recorded 1,463 Degree days for cooling and heating degree days - cities and fuas in 2025.
Compared with earlier readings it is down 6.0% on the previous year and down 7.2% over ten years.
Over the whole period, cooling and heating degree days - cities and fuas in Calais peaked at 2,396 Degree days in 1963 and was at its lowest, 1,408 Degree days, in 2014.
That places Calais 698th 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 Calais, year by year
| Year | Degree days | Change |
|---|---|---|
| 1950 | 1,973 Degree days | — |
| 1951 | 1,907 Degree days | -3.4% |
| 1952 | 2,037 Degree days | +6.8% |
| 1953 | 1,887 Degree days | -7.4% |
| 1954 | 2,007 Degree days | +6.4% |
| 1955 | 2,193 Degree days | +9.3% |
| 1956 | 2,260 Degree days | +3.1% |
| 1957 | 1,783 Degree days | -21.1% |
| 1958 | 1,974 Degree days | +10.7% |
| 1959 | 1,727 Degree days | -12.5% |
| 1960 | 1,835 Degree days | +6.2% |
| 1961 | 1,719 Degree days | -6.3% |
| 1962 | 2,242 Degree days | +30.4% |
| 1963 | 2,396 Degree days | +6.9% |
| 1964 | 2,065 Degree days | -13.8% |
| 1965 | 2,075 Degree days | +0.5% |
| 1966 | 1,906 Degree days | -8.1% |
| 1967 | 1,879 Degree days | -1.4% |
| 1968 | 2,083 Degree days | +10.9% |
| 1969 | 2,148 Degree days | +3.1% |
| 1970 | 1,992 Degree days | -7.3% |
| 1971 | 1,896 Degree days | -4.8% |
| 1972 | 2,004 Degree days | +5.7% |
| 1973 | 1,993 Degree days | -0.5% |
| 1974 | 1,837 Degree days | -7.9% |
| 1975 | 1,952 Degree days | +6.3% |
| 1976 | 1,981 Degree days | +1.5% |
| 1977 | 1,871 Degree days | -5.5% |
| 1978 | 1,998 Degree days | +6.8% |
| 1979 | 2,131 Degree days | +6.7% |
| 1980 | 2,037 Degree days | -4.4% |
| 1981 | 1,981 Degree days | -2.7% |
| 1982 | 1,843 Degree days | -7.0% |
| 1983 | 1,876 Degree days | +1.8% |
| 1984 | 1,930 Degree days | +2.9% |
| 1985 | 2,210 Degree days | +14.5% |
| 1986 | 2,142 Degree days | -3.1% |
| 1987 | 2,159 Degree days | +0.8% |
| 1988 | 1,729 Degree days | -19.9% |
| 1989 | 1,627 Degree days | -5.9% |
| 1990 | 1,510 Degree days | -7.2% |
| 1991 | 1,987 Degree days | +31.6% |
| 1992 | 1,820 Degree days | -8.4% |
| 1993 | 1,880 Degree days | +3.3% |
| 1994 | 1,650 Degree days | -12.2% |
| 1995 | 1,750 Degree days | +6.1% |
| 1996 | 2,197 Degree days | +25.5% |
| 1997 | 1,802 Degree days | -18.0% |
| 1998 | 1,705 Degree days | -5.3% |
| 1999 | 1,620 Degree days | -5.0% |
| 2000 | 1,643 Degree days | +1.4% |
| 2001 | 1,820 Degree days | +10.8% |
| 2002 | 1,563 Degree days | -14.1% |
| 2003 | 1,758 Degree days | +12.5% |
| 2004 | 1,710 Degree days | -2.7% |
| 2005 | 1,695 Degree days | -0.9% |
| 2006 | 1,716 Degree days | +1.2% |
| 2007 | 1,500 Degree days | -12.6% |
| 2008 | 1,722 Degree days | +14.8% |
| 2009 | 1,755 Degree days | +1.9% |
| 2010 | 2,181 Degree days | +24.3% |
| 2011 | 1,505 Degree days | -31.0% |
| 2012 | 1,833 Degree days | +21.8% |
| 2013 | 2,017 Degree days | +10.0% |
| 2014 | 1,408 Degree days | -30.2% |
| 2015 | 1,576 Degree days | +12.0% |
| 2016 | 1,710 Degree days | +8.5% |
| 2017 | 1,562 Degree days | -8.7% |
| 2018 | 1,652 Degree days | +5.8% |
| 2019 | 1,564 Degree days | -5.4% |
| 2020 | 1,428 Degree days | -8.6% |
| 2021 | 1,732 Degree days | +21.2% |
| 2022 | 1,433 Degree days | -17.2% |
| 2023 | 1,582 Degree days | +10.3% |
| 2024 | 1,556 Degree days | -1.6% |
| 2025 | 1,463 Degree days | -6.0% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1950s | 1,975 Degree days | 1,727 Degree days | 2,260 Degree days | 10 |
| 1960s | 2,035 Degree days | 1,719 Degree days | 2,396 Degree days | 10 |
| 1970s | 1,966 Degree days | 1,837 Degree days | 2,131 Degree days | 10 |
| 1980s | 1,953 Degree days | 1,627 Degree days | 2,210 Degree days | 10 |
| 1990s | 1,792 Degree days | 1,510 Degree days | 2,197 Degree days | 10 |
| 2000s | 1,688 Degree days | 1,500 Degree days | 1,820 Degree days | 10 |
| 2010s | 1,701 Degree days | 1,408 Degree days | 2,181 Degree days | 10 |
| 2020s | 1,532 Degree days | 1,428 Degree days | 1,732 Degree days | 6 |
More reference data data for Calais
- Cooling and heating degree days - Cities and FUAs — Cooling degree 4.38 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in cooling -6.39 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating -352.85 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating -35.85 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs, annual growth rate -5.98 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs — Change in cooling -279.81 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs — Cooling degree -69.41 % change on previous year (2025)
- Precipitation - Cities and FUAs — Extreme precipitation days 2.67 Days per year (2024)
- Precipitation - Cities and FUAs — Change in extreme precipitation 0.8 Days per year (2024)
- Dependency ratio - Cities and FUAs 29.4 Percentage of population aged 15-64 years (2022)
Frequently asked questions
- What is cooling and heating degree days - cities and fuas in Calais?
- Cooling and heating degree days - cities and fuas in Calais was 1,463 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 Calais?
- The highest recorded value was 2,396 Degree days in 1963.
- What is the lowest cooling and heating degree days - cities and fuas recorded in Calais?
- The lowest recorded value was 1,408 Degree days in 2014.
- How does Calais rank for cooling and heating degree days - cities and fuas?
- Calais ranks 698th out of 1314 regions with data for 2025.
- Is cooling and heating degree days - cities and fuas rising or falling in Calais?
- Over the last ten years it is down 7.2%. The long-run trend across the full record is falling.
- Where does this Calais 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