Cooling and heating degree days - Cities and FUAs in Hitachi
Hitachi: Cooling and heating degree days - Cities and FUAs was 1,243 Degree days in 2025. ▼ Falling
Cooling and heating degree days - Cities and FUAs in Hitachi, 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 Hitachi stood at 1,243 Degree days. That is the lowest value across all 76 years on record.
That represents a change of down 13.8% on the previous year and down 13.3% over ten years.
Over the whole period, cooling and heating degree days - cities and fuas in Hitachi peaked at 2,117 Degree days in 1984 and was at its lowest, 1,243 Degree days, in 2025.
That places Hitachi 799th 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 Hitachi, year by year
| Year | Degree days | Change |
|---|---|---|
| 1950 | 1,608 Degree days | — |
| 1951 | 1,600 Degree days | -0.5% |
| 1952 | 1,774 Degree days | +10.9% |
| 1953 | 1,710 Degree days | -3.6% |
| 1954 | 1,623 Degree days | -5.0% |
| 1955 | 1,646 Degree days | +1.4% |
| 1956 | 1,771 Degree days | +7.6% |
| 1957 | 1,619 Degree days | -8.6% |
| 1958 | 1,600 Degree days | -1.2% |
| 1959 | 1,539 Degree days | -3.8% |
| 1960 | 1,599 Degree days | +3.9% |
| 1961 | 1,645 Degree days | +2.9% |
| 1962 | 1,645 Degree days | +0.0% |
| 1963 | 1,718 Degree days | +4.4% |
| 1964 | 1,664 Degree days | -3.2% |
| 1965 | 1,753 Degree days | +5.4% |
| 1966 | 1,634 Degree days | -6.8% |
| 1967 | 1,722 Degree days | +5.4% |
| 1968 | 1,623 Degree days | -5.8% |
| 1969 | 1,805 Degree days | +11.2% |
| 1970 | 1,854 Degree days | +2.7% |
| 1971 | 1,707 Degree days | -7.9% |
| 1972 | 1,517 Degree days | -11.2% |
| 1973 | 1,623 Degree days | +7.0% |
| 1974 | 1,786 Degree days | +10.1% |
| 1975 | 1,724 Degree days | -3.4% |
| 1976 | 1,720 Degree days | -0.3% |
| 1977 | 1,673 Degree days | -2.7% |
| 1978 | 1,741 Degree days | +4.1% |
| 1979 | 1,418 Degree days | -18.6% |
| 1980 | 1,802 Degree days | +27.1% |
| 1981 | 1,923 Degree days | +6.7% |
| 1982 | 1,589 Degree days | -17.3% |
| 1983 | 1,773 Degree days | +11.6% |
| 1984 | 2,117 Degree days | +19.4% |
| 1985 | 1,773 Degree days | -16.3% |
| 1986 | 1,857 Degree days | +4.7% |
| 1987 | 1,668 Degree days | -10.2% |
| 1988 | 1,771 Degree days | +6.1% |
| 1989 | 1,466 Degree days | -17.2% |
| 1990 | 1,442 Degree days | -1.7% |
| 1991 | 1,548 Degree days | +7.4% |
| 1992 | 1,572 Degree days | +1.5% |
| 1993 | 1,622 Degree days | +3.2% |
| 1994 | 1,659 Degree days | +2.3% |
| 1995 | 1,658 Degree days | -0.0% |
| 1996 | 1,742 Degree days | +5.1% |
| 1997 | 1,498 Degree days | -14.0% |
| 1998 | 1,564 Degree days | +4.5% |
| 1999 | 1,534 Degree days | -2.0% |
| 2000 | 1,611 Degree days | +5.0% |
| 2001 | 1,715 Degree days | +6.5% |
| 2002 | 1,578 Degree days | -8.0% |
| 2003 | 1,606 Degree days | +1.8% |
| 2004 | 1,472 Degree days | -8.3% |
| 2005 | 1,762 Degree days | +19.7% |
| 2006 | 1,569 Degree days | -10.9% |
| 2007 | 1,458 Degree days | -7.1% |
| 2008 | 1,541 Degree days | +5.6% |
| 2009 | 1,456 Degree days | -5.5% |
| 2010 | 1,559 Degree days | +7.0% |
| 2011 | 1,668 Degree days | +7.0% |
| 2012 | 1,715 Degree days | +2.9% |
| 2013 | 1,598 Degree days | -6.8% |
| 2014 | 1,613 Degree days | +0.9% |
| 2015 | 1,433 Degree days | -11.2% |
| 2016 | 1,486 Degree days | +3.6% |
| 2017 | 1,608 Degree days | +8.2% |
| 2018 | 1,435 Degree days | -10.7% |
| 2019 | 1,442 Degree days | +0.4% |
| 2020 | 1,420 Degree days | -1.5% |
| 2021 | 1,375 Degree days | -3.2% |
| 2022 | 1,515 Degree days | +10.2% |
| 2023 | 1,409 Degree days | -7.0% |
| 2024 | 1,442 Degree days | +2.3% |
| 2025 | 1,243 Degree days | -13.8% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1950s | 1,649 Degree days | 1,539 Degree days | 1,774 Degree days | 10 |
| 1960s | 1,681 Degree days | 1,599 Degree days | 1,805 Degree days | 10 |
| 1970s | 1,676 Degree days | 1,418 Degree days | 1,854 Degree days | 10 |
| 1980s | 1,774 Degree days | 1,466 Degree days | 2,117 Degree days | 10 |
| 1990s | 1,584 Degree days | 1,442 Degree days | 1,742 Degree days | 10 |
| 2000s | 1,577 Degree days | 1,456 Degree days | 1,762 Degree days | 10 |
| 2010s | 1,556 Degree days | 1,433 Degree days | 1,715 Degree days | 10 |
| 2020s | 1,401 Degree days | 1,243 Degree days | 1,515 Degree days | 6 |
More reference data data for Hitachi
- Cooling and heating degree days - Cities and FUAs — Cooling degree 321.5 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in cooling 146.48 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating -393.48 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating -102.12 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs, annual growth rate -13.79 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs — Change in cooling -31.67 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs — Cooling degree -17.43 % change on previous year (2025)
- Precipitation - Cities and FUAs — Extreme precipitation days 26.5 Days per year (2024)
- Precipitation - Cities and FUAs — Change in extreme precipitation 7.03 Days per year (2024)
- Dependency ratio - Cities and FUAs 57.9 Percentage of population aged 15-64 years (2020)
Frequently asked questions
- What is cooling and heating degree days - cities and fuas in Hitachi?
- Cooling and heating degree days - cities and fuas in Hitachi was 1,243 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 Hitachi?
- The highest recorded value was 2,117 Degree days in 1984.
- What is the lowest cooling and heating degree days - cities and fuas recorded in Hitachi?
- The lowest recorded value was 1,243 Degree days in 2025.
- How does Hitachi rank for cooling and heating degree days - cities and fuas?
- Hitachi ranks 799th out of 1314 regions with data for 2025.
- Is cooling and heating degree days - cities and fuas rising or falling in Hitachi?
- Over the last ten years it is down 13.3%. The long-run trend across the full record is falling.
- Where does this Hitachi 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