Cooling and heating degree days - Cities and FUAs in Haarlem
Haarlem: Cooling and heating degree days - Cities and FUAs was 1,588 Degree days in 2025. ▼ Falling
Cooling and heating degree days - Cities and FUAs in Haarlem, 1950–2025
Source: Organisation for Economic Co-operation and Development. Measured in Degree days.
Analysis
Haarlem recorded 1,588 Degree days for cooling and heating degree days - cities and fuas in 2025.
That represents a change of down 1.4% on the previous year and down 7.6% over ten years.
Over the whole period, cooling and heating degree days - cities and fuas in Haarlem peaked at 2,573 Degree days in 1963 and was at its lowest, 1,502 Degree days, in 2014.
That places Haarlem 636th 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 Haarlem, year by year
| Year | Degree days | Change |
|---|---|---|
| 1950 | 2,141 Degree days | — |
| 1951 | 2,049 Degree days | -4.3% |
| 1952 | 2,229 Degree days | +8.8% |
| 1953 | 1,991 Degree days | -10.7% |
| 1954 | 2,169 Degree days | +9.0% |
| 1955 | 2,347 Degree days | +8.2% |
| 1956 | 2,453 Degree days | +4.5% |
| 1957 | 1,912 Degree days | -22.0% |
| 1958 | 2,129 Degree days | +11.3% |
| 1959 | 1,890 Degree days | -11.2% |
| 1960 | 1,966 Degree days | +4.0% |
| 1961 | 1,900 Degree days | -3.4% |
| 1962 | 2,397 Degree days | +26.2% |
| 1963 | 2,573 Degree days | +7.3% |
| 1964 | 2,184 Degree days | -15.1% |
| 1965 | 2,209 Degree days | +1.1% |
| 1966 | 2,100 Degree days | -4.9% |
| 1967 | 1,908 Degree days | -9.2% |
| 1968 | 2,171 Degree days | +13.8% |
| 1969 | 2,377 Degree days | +9.5% |
| 1970 | 2,191 Degree days | -7.8% |
| 1971 | 2,009 Degree days | -8.3% |
| 1972 | 2,129 Degree days | +6.0% |
| 1973 | 2,051 Degree days | -3.6% |
| 1974 | 1,883 Degree days | -8.2% |
| 1975 | 2,015 Degree days | +7.0% |
| 1976 | 2,125 Degree days | +5.4% |
| 1977 | 1,952 Degree days | -8.1% |
| 1978 | 2,151 Degree days | +10.2% |
| 1979 | 2,370 Degree days | +10.2% |
| 1980 | 2,159 Degree days | -8.9% |
| 1981 | 2,164 Degree days | +0.2% |
| 1982 | 2,016 Degree days | -6.8% |
| 1983 | 1,989 Degree days | -1.3% |
| 1984 | 2,113 Degree days | +6.2% |
| 1985 | 2,421 Degree days | +14.6% |
| 1986 | 2,293 Degree days | -5.3% |
| 1987 | 2,358 Degree days | +2.8% |
| 1988 | 1,795 Degree days | -23.9% |
| 1989 | 1,766 Degree days | -1.6% |
| 1990 | 1,614 Degree days | -8.7% |
| 1991 | 2,090 Degree days | +29.5% |
| 1992 | 1,893 Degree days | -9.4% |
| 1993 | 2,041 Degree days | +7.8% |
| 1994 | 1,830 Degree days | -10.3% |
| 1995 | 1,951 Degree days | +6.6% |
| 1996 | 2,493 Degree days | +27.8% |
| 1997 | 2,050 Degree days | -17.8% |
| 1998 | 1,853 Degree days | -9.6% |
| 1999 | 1,753 Degree days | -5.4% |
| 2000 | 1,731 Degree days | -1.3% |
| 2001 | 1,932 Degree days | +11.6% |
| 2002 | 1,778 Degree days | -8.0% |
| 2003 | 1,944 Degree days | +9.3% |
| 2004 | 1,858 Degree days | -4.4% |
| 2005 | 1,794 Degree days | -3.4% |
| 2006 | 1,812 Degree days | +1.0% |
| 2007 | 1,556 Degree days | -14.1% |
| 2008 | 1,838 Degree days | +18.1% |
| 2009 | 1,883 Degree days | +2.5% |
| 2010 | 2,375 Degree days | +26.2% |
| 2011 | 1,722 Degree days | -27.5% |
| 2012 | 1,965 Degree days | +14.2% |
| 2013 | 2,150 Degree days | +9.4% |
| 2014 | 1,502 Degree days | -30.1% |
| 2015 | 1,718 Degree days | +14.3% |
| 2016 | 1,823 Degree days | +6.1% |
| 2017 | 1,707 Degree days | -6.3% |
| 2018 | 1,785 Degree days | +4.6% |
| 2019 | 1,671 Degree days | -6.4% |
| 2020 | 1,542 Degree days | -7.7% |
| 2021 | 1,858 Degree days | +20.5% |
| 2022 | 1,565 Degree days | -15.7% |
| 2023 | 1,703 Degree days | +8.8% |
| 2024 | 1,610 Degree days | -5.4% |
| 2025 | 1,588 Degree days | -1.4% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1950s | 2,131 Degree days | 1,890 Degree days | 2,453 Degree days | 10 |
| 1960s | 2,178 Degree days | 1,900 Degree days | 2,573 Degree days | 10 |
| 1970s | 2,088 Degree days | 1,883 Degree days | 2,370 Degree days | 10 |
| 1980s | 2,107 Degree days | 1,766 Degree days | 2,421 Degree days | 10 |
| 1990s | 1,957 Degree days | 1,614 Degree days | 2,493 Degree days | 10 |
| 2000s | 1,813 Degree days | 1,556 Degree days | 1,944 Degree days | 10 |
| 2010s | 1,842 Degree days | 1,502 Degree days | 2,375 Degree days | 10 |
| 2020s | 1,644 Degree days | 1,542 Degree days | 1,858 Degree days | 6 |
More reference data data for Haarlem
- Cooling and heating degree days - Cities and FUAs — Cooling degree 5.4 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in cooling -8.99 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating -378.46 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating -6.37 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs, annual growth rate -1.41 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs — Change in cooling -269.8 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs — Cooling degree -72.57 % change on previous year (2025)
- Precipitation - Cities and FUAs — Extreme precipitation days 3 Days per year (2024)
- Precipitation - Cities and FUAs — Change in extreme precipitation 0.5673 Days per year (2024)
- Dependency ratio - Cities and FUAs 31.5 Percentage of population aged 15-64 years (2025)
Frequently asked questions
- What is cooling and heating degree days - cities and fuas in Haarlem?
- Cooling and heating degree days - cities and fuas in Haarlem was 1,588 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 Haarlem?
- The highest recorded value was 2,573 Degree days in 1963.
- What is the lowest cooling and heating degree days - cities and fuas recorded in Haarlem?
- The lowest recorded value was 1,502 Degree days in 2014.
- How does Haarlem rank for cooling and heating degree days - cities and fuas?
- Haarlem ranks 636th out of 1314 regions with data for 2025.
- Is cooling and heating degree days - cities and fuas rising or falling in Haarlem?
- Over the last ten years it is down 7.6%. The long-run trend across the full record is falling.
- Where does this Haarlem 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