Cooling and heating degree days - Cities and FUAs in Nagano
Nagano: Cooling and heating degree days - Cities and FUAs was 2,520 Degree days in 2025. ▼ Falling
Cooling and heating degree days - Cities and FUAs in Nagano, 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 Nagano is 2,520 Degree days, measured in 2025. That is the lowest value across all 76 years on record.
That represents a change of down 6.5% on the previous year and down 6.3% over ten years.
Over the whole period, cooling and heating degree days - cities and fuas in Nagano peaked at 3,461 Degree days in 1984 and was at its lowest, 2,520 Degree days, in 2025.
That places Nagano 170th out of 1314 regions with data for 2025, putting it in the top quarter.
The long-run direction has been consistently falling across the 76 years of available data.
Cooling and heating degree days - Cities and FUAs in Nagano, year by year
| Year | Degree days | Change |
|---|---|---|
| 1950 | 3,082 Degree days | — |
| 1951 | 3,147 Degree days | +2.1% |
| 1952 | 3,239 Degree days | +2.9% |
| 1953 | 3,202 Degree days | -1.1% |
| 1954 | 3,124 Degree days | -2.4% |
| 1955 | 3,117 Degree days | -0.2% |
| 1956 | 3,284 Degree days | +5.4% |
| 1957 | 3,136 Degree days | -4.5% |
| 1958 | 3,017 Degree days | -3.8% |
| 1959 | 2,885 Degree days | -4.4% |
| 1960 | 3,069 Degree days | +6.4% |
| 1961 | 3,052 Degree days | -0.6% |
| 1962 | 3,145 Degree days | +3.0% |
| 1963 | 3,160 Degree days | +0.5% |
| 1964 | 3,035 Degree days | -3.9% |
| 1965 | 3,337 Degree days | +9.9% |
| 1966 | 3,152 Degree days | -5.5% |
| 1967 | 3,216 Degree days | +2.0% |
| 1968 | 3,104 Degree days | -3.5% |
| 1969 | 3,335 Degree days | +7.4% |
| 1970 | 3,294 Degree days | -1.2% |
| 1971 | 3,183 Degree days | -3.4% |
| 1972 | 2,953 Degree days | -7.2% |
| 1973 | 3,199 Degree days | +8.3% |
| 1974 | 3,265 Degree days | +2.1% |
| 1975 | 3,135 Degree days | -4.0% |
| 1976 | 3,202 Degree days | +2.1% |
| 1977 | 3,013 Degree days | -5.9% |
| 1978 | 3,216 Degree days | +6.7% |
| 1979 | 2,851 Degree days | -11.3% |
| 1980 | 3,285 Degree days | +15.2% |
| 1981 | 3,410 Degree days | +3.8% |
| 1982 | 3,009 Degree days | -11.8% |
| 1983 | 3,188 Degree days | +6.0% |
| 1984 | 3,461 Degree days | +8.6% |
| 1985 | 3,123 Degree days | -9.8% |
| 1986 | 3,277 Degree days | +4.9% |
| 1987 | 2,987 Degree days | -8.9% |
| 1988 | 3,323 Degree days | +11.2% |
| 1989 | 2,892 Degree days | -13.0% |
| 1990 | 2,790 Degree days | -3.5% |
| 1991 | 2,931 Degree days | +5.1% |
| 1992 | 3,038 Degree days | +3.6% |
| 1993 | 3,097 Degree days | +2.0% |
| 1994 | 2,993 Degree days | -3.3% |
| 1995 | 3,226 Degree days | +7.8% |
| 1996 | 3,246 Degree days | +0.6% |
| 1997 | 3,000 Degree days | -7.6% |
| 1998 | 2,726 Degree days | -9.1% |
| 1999 | 2,970 Degree days | +8.9% |
| 2000 | 3,031 Degree days | +2.1% |
| 2001 | 3,115 Degree days | +2.8% |
| 2002 | 3,011 Degree days | -3.3% |
| 2003 | 2,974 Degree days | -1.2% |
| 2004 | 2,716 Degree days | -8.7% |
| 2005 | 3,037 Degree days | +11.8% |
| 2006 | 2,858 Degree days | -5.9% |
| 2007 | 2,790 Degree days | -2.3% |
| 2008 | 2,910 Degree days | +4.3% |
| 2009 | 2,782 Degree days | -4.4% |
| 2010 | 2,919 Degree days | +4.9% |
| 2011 | 3,064 Degree days | +5.0% |
| 2012 | 3,147 Degree days | +2.7% |
| 2013 | 3,007 Degree days | -4.4% |
| 2014 | 3,064 Degree days | +1.9% |
| 2015 | 2,691 Degree days | -12.2% |
| 2016 | 2,696 Degree days | +0.2% |
| 2017 | 3,067 Degree days | +13.8% |
| 2018 | 2,740 Degree days | -10.7% |
| 2019 | 2,719 Degree days | -0.8% |
| 2020 | 2,665 Degree days | -2.0% |
| 2021 | 2,696 Degree days | +1.2% |
| 2022 | 2,826 Degree days | +4.8% |
| 2023 | 2,706 Degree days | -4.3% |
| 2024 | 2,695 Degree days | -0.4% |
| 2025 | 2,520 Degree days | -6.5% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1950s | 3,123 Degree days | 2,885 Degree days | 3,284 Degree days | 10 |
| 1960s | 3,160 Degree days | 3,035 Degree days | 3,337 Degree days | 10 |
| 1970s | 3,131 Degree days | 2,851 Degree days | 3,294 Degree days | 10 |
| 1980s | 3,196 Degree days | 2,892 Degree days | 3,461 Degree days | 10 |
| 1990s | 3,002 Degree days | 2,726 Degree days | 3,246 Degree days | 10 |
| 2000s | 2,922 Degree days | 2,716 Degree days | 3,115 Degree days | 10 |
| 2010s | 2,911 Degree days | 2,691 Degree days | 3,147 Degree days | 10 |
| 2020s | 2,685 Degree days | 2,520 Degree days | 2,826 Degree days | 6 |
More reference data data for Nagano
- Cooling and heating degree days - Cities and FUAs — Cooling degree 105.54 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in cooling 21.86 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating -507.7 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating -52.55 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs, annual growth rate -6.49 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs — Change in cooling -69.2 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs — Cooling degree -31.75 % change on previous year (2025)
- Precipitation - Cities and FUAs — Extreme precipitation days 39.77 Days per year (2024)
- Precipitation - Cities and FUAs — Change in extreme precipitation 10.06 Days per year (2024)
- Dependency ratio - Cities and FUAs 53.6 Percentage of population aged 15-64 years (2020)
Frequently asked questions
- What is cooling and heating degree days - cities and fuas in Nagano?
- Cooling and heating degree days - cities and fuas in Nagano was 2,520 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 Nagano?
- The highest recorded value was 3,461 Degree days in 1984.
- What is the lowest cooling and heating degree days - cities and fuas recorded in Nagano?
- The lowest recorded value was 2,520 Degree days in 2025.
- How does Nagano rank for cooling and heating degree days - cities and fuas?
- Nagano ranks 170th out of 1314 regions with data for 2025.
- Is cooling and heating degree days - cities and fuas rising or falling in Nagano?
- Over the last ten years it is down 6.3%. The long-run trend across the full record is falling.
- Where does this Nagano 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