Cooling and heating degree days - Cities and FUAs (heating Cities) in Jeju
Jeju: Cooling and heating degree days - Cities and FUAs (heating Cities) was 1,144 Degree days in 2025. ▼ Falling
Cooling and heating degree days - Cities and FUAs in Jeju, 1950–2025
Source: Organisation for Economic Co-operation and Development. Measured in Degree days.
Analysis
Jeju recorded 1,144 Degree days for cooling and heating degree days - cities and fuas in 2025.
Compared with earlier readings it is up 8.8% on the previous year and down 3.0% over ten years.
Over the whole period, cooling and heating degree days - cities and fuas in Jeju peaked at 1,560 Degree days in 1956 and was at its lowest, 1,020 Degree days, in 2021.
Jeju ranks 835th of 1314 regions on this measure, 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 (heating Cities) in Jeju, year by year
| Year | Degree days | Change |
|---|---|---|
| 1950 | 1,237 Degree days | — |
| 1951 | 1,294 Degree days | +4.6% |
| 1952 | 1,382 Degree days | +6.8% |
| 1953 | 1,405 Degree days | +1.6% |
| 1954 | 1,255 Degree days | -10.6% |
| 1955 | 1,316 Degree days | +4.9% |
| 1956 | 1,560 Degree days | +18.5% |
| 1957 | 1,420 Degree days | -8.9% |
| 1958 | 1,235 Degree days | -13.1% |
| 1959 | 1,160 Degree days | -6.0% |
| 1960 | 1,213 Degree days | +4.5% |
| 1961 | 1,258 Degree days | +3.7% |
| 1962 | 1,383 Degree days | +9.9% |
| 1963 | 1,438 Degree days | +4.0% |
| 1964 | 1,206 Degree days | -16.1% |
| 1965 | 1,379 Degree days | +14.4% |
| 1966 | 1,224 Degree days | -11.3% |
| 1967 | 1,415 Degree days | +15.6% |
| 1968 | 1,339 Degree days | -5.4% |
| 1969 | 1,462 Degree days | +9.2% |
| 1970 | 1,502 Degree days | +2.7% |
| 1971 | 1,362 Degree days | -9.3% |
| 1972 | 1,166 Degree days | -14.4% |
| 1973 | 1,278 Degree days | +9.7% |
| 1974 | 1,400 Degree days | +9.5% |
| 1975 | 1,327 Degree days | -5.2% |
| 1976 | 1,352 Degree days | +1.9% |
| 1977 | 1,339 Degree days | -1.0% |
| 1978 | 1,333 Degree days | -0.4% |
| 1979 | 1,221 Degree days | -8.4% |
| 1980 | 1,455 Degree days | +19.2% |
| 1981 | 1,498 Degree days | +2.9% |
| 1982 | 1,307 Degree days | -12.7% |
| 1983 | 1,312 Degree days | +0.3% |
| 1984 | 1,545 Degree days | +17.8% |
| 1985 | 1,426 Degree days | -7.7% |
| 1986 | 1,447 Degree days | +1.5% |
| 1987 | 1,268 Degree days | -12.4% |
| 1988 | 1,403 Degree days | +10.6% |
| 1989 | 1,179 Degree days | -15.9% |
| 1990 | 1,138 Degree days | -3.5% |
| 1991 | 1,247 Degree days | +9.6% |
| 1992 | 1,172 Degree days | -6.0% |
| 1993 | 1,304 Degree days | +11.3% |
| 1994 | 1,192 Degree days | -8.6% |
| 1995 | 1,372 Degree days | +15.1% |
| 1996 | 1,390 Degree days | +1.3% |
| 1997 | 1,187 Degree days | -14.6% |
| 1998 | 1,080 Degree days | -9.1% |
| 1999 | 1,201 Degree days | +11.2% |
| 2000 | 1,372 Degree days | +14.3% |
| 2001 | 1,300 Degree days | -5.2% |
| 2002 | 1,210 Degree days | -6.9% |
| 2003 | 1,247 Degree days | +3.1% |
| 2004 | 1,203 Degree days | -3.6% |
| 2005 | 1,458 Degree days | +21.2% |
| 2006 | 1,213 Degree days | -16.8% |
| 2007 | 1,127 Degree days | -7.1% |
| 2008 | 1,275 Degree days | +13.2% |
| 2009 | 1,236 Degree days | -3.1% |
| 2010 | 1,331 Degree days | +7.7% |
| 2011 | 1,442 Degree days | +8.3% |
| 2012 | 1,435 Degree days | -0.5% |
| 2013 | 1,376 Degree days | -4.1% |
| 2014 | 1,219 Degree days | -11.4% |
| 2015 | 1,179 Degree days | -3.3% |
| 2016 | 1,181 Degree days | +0.2% |
| 2017 | 1,291 Degree days | +9.4% |
| 2018 | 1,227 Degree days | -5.0% |
| 2019 | 1,131 Degree days | -7.9% |
| 2020 | 1,103 Degree days | -2.4% |
| 2021 | 1,020 Degree days | -7.5% |
| 2022 | 1,222 Degree days | +19.8% |
| 2023 | 1,152 Degree days | -5.7% |
| 2024 | 1,051 Degree days | -8.7% |
| 2025 | 1,144 Degree days | +8.8% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1950s | 1,326 Degree days | 1,160 Degree days | 1,560 Degree days | 10 |
| 1960s | 1,332 Degree days | 1,206 Degree days | 1,462 Degree days | 10 |
| 1970s | 1,328 Degree days | 1,166 Degree days | 1,502 Degree days | 10 |
| 1980s | 1,384 Degree days | 1,179 Degree days | 1,545 Degree days | 10 |
| 1990s | 1,228 Degree days | 1,080 Degree days | 1,390 Degree days | 10 |
| 2000s | 1,264 Degree days | 1,127 Degree days | 1,458 Degree days | 10 |
| 2010s | 1,281 Degree days | 1,131 Degree days | 1,442 Degree days | 10 |
| 2020s | 1,115 Degree days | 1,020 Degree days | 1,222 Degree days | 6 |
More reference data data for Jeju
- Cooling and heating degree days - Cities and FUAs — Change in cooling 224.91 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Cooling degree 0.3336 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs — Change in cooling 0.6633 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs, annual growth rate 8.77 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating 38.95 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating -144.51 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Cooling degree 445.78 Degree days (2025)
- Precipitation - Cities and FUAs — Change in extreme precipitation 3.68 Days per year (2024)
- Precipitation - Cities and FUAs — Extreme precipitation days 24.67 Days per year (2024)
- Exposure to extreme precipitation — Annual precipitation change 76.63 Millimetres per year (2023)
Frequently asked questions
- What is cooling and heating degree days - cities and fuas in Jeju?
- Cooling and heating degree days - cities and fuas in Jeju was 1,144 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 Jeju?
- The highest recorded value was 1,560 Degree days in 1956.
- What is the lowest cooling and heating degree days - cities and fuas recorded in Jeju?
- The lowest recorded value was 1,020 Degree days in 2021.
- How does Jeju rank for cooling and heating degree days - cities and fuas?
- Jeju ranks 835th out of 1314 regions with data for 2025.
- Is cooling and heating degree days - cities and fuas rising or falling in Jeju?
- Over the last ten years it is down 3.0%. The long-run trend across the full record is falling.
- Where does this Jeju 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