Cooling and heating degree days - Cities and FUAs (heating Cities) in Hamilton
Hamilton: Cooling and heating degree days - Cities and FUAs (heating Cities) was 669.36 Degree days in 2025. ▼ Falling
Cooling and heating degree days - Cities and FUAs in Hamilton, 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 Hamilton stood at 669.36 Degree days. That is the lowest value across all 76 years on record.
The figure is down 30.7% on the previous year and down 28.1% over ten years.
Over the whole period, cooling and heating degree days - cities and fuas in Hamilton peaked at 1,253 Degree days in 1951 and was at its lowest, 669.36 Degree days, in 2025.
Hamilton ranks 1005th of 1314 regions on this measure, in the bottom quarter.
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 Hamilton, year by year
| Year | Degree days | Change |
|---|---|---|
| 1950 | 1,024 Degree days | — |
| 1951 | 1,253 Degree days | +22.4% |
| 1952 | 1,094 Degree days | -12.7% |
| 1953 | 1,011 Degree days | -7.6% |
| 1954 | 980.49 Degree days | -3.0% |
| 1955 | 869.4 Degree days | -11.3% |
| 1956 | 869.33 Degree days | -0.0% |
| 1957 | 992.17 Degree days | +14.1% |
| 1958 | 943.54 Degree days | -4.9% |
| 1959 | 1,071 Degree days | +13.5% |
| 1960 | 997.22 Degree days | -6.9% |
| 1961 | 1,004 Degree days | +0.7% |
| 1962 | 893.9 Degree days | -11.0% |
| 1963 | 1,087 Degree days | +21.6% |
| 1964 | 1,022 Degree days | -6.0% |
| 1965 | 1,175 Degree days | +14.9% |
| 1966 | 1,195 Degree days | +1.7% |
| 1967 | 1,003 Degree days | -16.1% |
| 1968 | 1,024 Degree days | +2.1% |
| 1969 | 1,181 Degree days | +15.3% |
| 1970 | 864.47 Degree days | -26.8% |
| 1971 | 877.4 Degree days | +1.5% |
| 1972 | 982.5 Degree days | +12.0% |
| 1973 | 841.11 Degree days | -14.4% |
| 1974 | 887.3 Degree days | +5.5% |
| 1975 | 932.07 Degree days | +5.0% |
| 1976 | 1,051 Degree days | +12.8% |
| 1977 | 1,108 Degree days | +5.4% |
| 1978 | 974.76 Degree days | -12.0% |
| 1979 | 892.24 Degree days | -8.5% |
| 1980 | 977.57 Degree days | +9.6% |
| 1981 | 931.74 Degree days | -4.7% |
| 1982 | 1,160 Degree days | +24.5% |
| 1983 | 1,016 Degree days | -12.4% |
| 1984 | 908.25 Degree days | -10.6% |
| 1985 | 937.87 Degree days | +3.3% |
| 1986 | 1,014 Degree days | +8.1% |
| 1987 | 925.98 Degree days | -8.7% |
| 1988 | 766.87 Degree days | -17.2% |
| 1989 | 920.31 Degree days | +20.0% |
| 1990 | 850.76 Degree days | -7.6% |
| 1991 | 1,012 Degree days | +18.9% |
| 1992 | 1,156 Degree days | +14.3% |
| 1993 | 1,106 Degree days | -4.4% |
| 1994 | 1,008 Degree days | -8.8% |
| 1995 | 933.61 Degree days | -7.4% |
| 1996 | 966.96 Degree days | +3.6% |
| 1997 | 1,049 Degree days | +8.5% |
| 1998 | 677.81 Degree days | -35.4% |
| 1999 | 909.96 Degree days | +34.3% |
| 2000 | 841.39 Degree days | -7.5% |
| 2001 | 942.5 Degree days | +12.0% |
| 2002 | 843.34 Degree days | -10.5% |
| 2003 | 910.32 Degree days | +7.9% |
| 2004 | 1,049 Degree days | +15.3% |
| 2005 | 816.87 Degree days | -22.1% |
| 2006 | 1,000 Degree days | +22.4% |
| 2007 | 850.84 Degree days | -14.9% |
| 2008 | 885.91 Degree days | +4.1% |
| 2009 | 1,095 Degree days | +23.6% |
| 2010 | 839.07 Degree days | -23.3% |
| 2011 | 863.01 Degree days | +2.9% |
| 2012 | 995.17 Degree days | +15.3% |
| 2013 | 797.86 Degree days | -19.8% |
| 2014 | 872.68 Degree days | +9.4% |
| 2015 | 930.67 Degree days | +6.6% |
| 2016 | 742.55 Degree days | -20.2% |
| 2017 | 824.03 Degree days | +11.0% |
| 2018 | 822.16 Degree days | -0.2% |
| 2019 | 796.9 Degree days | -3.1% |
| 2020 | 768.84 Degree days | -3.5% |
| 2021 | 764.07 Degree days | -0.6% |
| 2022 | 680.17 Degree days | -11.0% |
| 2023 | 874.39 Degree days | +28.6% |
| 2024 | 965.22 Degree days | +10.4% |
| 2025 | 669.36 Degree days | -30.7% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1950s | 1,011 Degree days | 869.33 Degree days | 1,253 Degree days | 10 |
| 1960s | 1,058 Degree days | 893.9 Degree days | 1,195 Degree days | 10 |
| 1970s | 941.06 Degree days | 841.11 Degree days | 1,108 Degree days | 10 |
| 1980s | 955.82 Degree days | 766.87 Degree days | 1,160 Degree days | 10 |
| 1990s | 966.89 Degree days | 677.81 Degree days | 1,156 Degree days | 10 |
| 2000s | 923.53 Degree days | 816.87 Degree days | 1,095 Degree days | 10 |
| 2010s | 848.41 Degree days | 742.55 Degree days | 995.17 Degree days | 10 |
| 2020s | 787.01 Degree days | 669.36 Degree days | 965.22 Degree days | 6 |
More reference data data for Hamilton
- Cooling and heating degree days - Cities and FUAs — Cooling degree 120.51 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in cooling -22.52 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating -274.77 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating 130.24 % change on previous year (2024)
- Cooling and heating degree days - Cities and FUAs, annual growth rate -30.65 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs — Change in cooling -310.69 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs — Cooling degree 262.89 % change on previous year (2025)
- Precipitation - Cities and FUAs — Extreme precipitation days 8.25 Days per year (2024)
- Precipitation - Cities and FUAs — Change in extreme precipitation -3.97 Days per year (2024)
- Dependency ratio - Cities and FUAs 18 Percentage of population aged 15-64 years (2024)
Frequently asked questions
- What is cooling and heating degree days - cities and fuas in Hamilton?
- Cooling and heating degree days - cities and fuas in Hamilton was 669.36 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 Hamilton?
- The highest recorded value was 1,253 Degree days in 1951.
- What is the lowest cooling and heating degree days - cities and fuas recorded in Hamilton?
- The lowest recorded value was 669.36 Degree days in 2025.
- How does Hamilton rank for cooling and heating degree days - cities and fuas?
- Hamilton ranks 1005th out of 1314 regions with data for 2025.
- Is cooling and heating degree days - cities and fuas rising or falling in Hamilton?
- Over the last ten years it is down 28.1%. The long-run trend across the full record is falling.
- Where does this Hamilton 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