Cooling and heating degree days - Cities and FUAs in Irun
Irun: Cooling and heating degree days - Cities and FUAs was 862.09 Degree days in 2025. ▼ Falling
Cooling and heating degree days - Cities and FUAs in Irun, 1950–2025
Source: Organisation for Economic Co-operation and Development. Measured in Degree days.
Analysis
Irun recorded 862.09 Degree days for cooling and heating degree days - cities and fuas in 2025. That is the lowest value across all 76 years on record.
That represents a change of down 15.3% on the previous year and down 19.3% over ten years.
Over the whole period, cooling and heating degree days - cities and fuas in Irun peaked at 1,687 Degree days in 1956 and was at its lowest, 862.09 Degree days, in 2025.
That places Irun 934th 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 Irun, year by year
| Year | Degree days | Change |
|---|---|---|
| 1950 | 1,293 Degree days | — |
| 1951 | 1,383 Degree days | +6.9% |
| 1952 | 1,310 Degree days | -5.2% |
| 1953 | 1,349 Degree days | +2.9% |
| 1954 | 1,488 Degree days | +10.3% |
| 1955 | 1,226 Degree days | -17.6% |
| 1956 | 1,687 Degree days | +37.5% |
| 1957 | 1,302 Degree days | -22.8% |
| 1958 | 1,260 Degree days | -3.2% |
| 1959 | 1,116 Degree days | -11.5% |
| 1960 | 1,212 Degree days | +8.6% |
| 1961 | 1,012 Degree days | -16.5% |
| 1962 | 1,445 Degree days | +42.7% |
| 1963 | 1,455 Degree days | +0.7% |
| 1964 | 1,404 Degree days | -3.5% |
| 1965 | 1,378 Degree days | -1.8% |
| 1966 | 1,182 Degree days | -14.2% |
| 1967 | 1,363 Degree days | +15.3% |
| 1968 | 1,231 Degree days | -9.7% |
| 1969 | 1,507 Degree days | +22.4% |
| 1970 | 1,394 Degree days | -7.5% |
| 1971 | 1,452 Degree days | +4.2% |
| 1972 | 1,435 Degree days | -1.2% |
| 1973 | 1,493 Degree days | +4.1% |
| 1974 | 1,379 Degree days | -7.6% |
| 1975 | 1,430 Degree days | +3.7% |
| 1976 | 1,473 Degree days | +3.0% |
| 1977 | 1,240 Degree days | -15.8% |
| 1978 | 1,340 Degree days | +8.1% |
| 1979 | 1,329 Degree days | -0.8% |
| 1980 | 1,441 Degree days | +8.4% |
| 1981 | 1,235 Degree days | -14.3% |
| 1982 | 1,143 Degree days | -7.5% |
| 1983 | 1,214 Degree days | +6.3% |
| 1984 | 1,402 Degree days | +15.5% |
| 1985 | 1,439 Degree days | +2.6% |
| 1986 | 1,378 Degree days | -4.3% |
| 1987 | 1,265 Degree days | -8.2% |
| 1988 | 1,151 Degree days | -9.0% |
| 1989 | 970.16 Degree days | -15.7% |
| 1990 | 1,098 Degree days | +13.2% |
| 1991 | 1,371 Degree days | +24.8% |
| 1992 | 1,306 Degree days | -4.7% |
| 1993 | 1,248 Degree days | -4.4% |
| 1994 | 1,083 Degree days | -13.2% |
| 1995 | 1,098 Degree days | +1.4% |
| 1996 | 1,209 Degree days | +10.1% |
| 1997 | 980.99 Degree days | -18.9% |
| 1998 | 1,166 Degree days | +18.9% |
| 1999 | 1,228 Degree days | +5.3% |
| 2000 | 1,137 Degree days | -7.4% |
| 2001 | 1,221 Degree days | +7.4% |
| 2002 | 1,003 Degree days | -17.8% |
| 2003 | 1,108 Degree days | +10.5% |
| 2004 | 1,312 Degree days | +18.4% |
| 2005 | 1,370 Degree days | +4.4% |
| 2006 | 1,131 Degree days | -17.4% |
| 2007 | 1,215 Degree days | +7.4% |
| 2008 | 1,192 Degree days | -1.9% |
| 2009 | 1,234 Degree days | +3.5% |
| 2010 | 1,431 Degree days | +15.9% |
| 2011 | 972.18 Degree days | -32.0% |
| 2012 | 1,286 Degree days | +32.3% |
| 2013 | 1,325 Degree days | +3.0% |
| 2014 | 989.62 Degree days | -25.3% |
| 2015 | 1,068 Degree days | +7.9% |
| 2016 | 1,078 Degree days | +0.9% |
| 2017 | 1,132 Degree days | +5.1% |
| 2018 | 1,098 Degree days | -3.0% |
| 2019 | 1,084 Degree days | -1.2% |
| 2020 | 928.77 Degree days | -14.3% |
| 2021 | 1,120 Degree days | +20.6% |
| 2022 | 944.52 Degree days | -15.7% |
| 2023 | 1,081 Degree days | +14.5% |
| 2024 | 1,018 Degree days | -5.8% |
| 2025 | 862.09 Degree days | -15.3% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1950s | 1,341 Degree days | 1,116 Degree days | 1,687 Degree days | 10 |
| 1960s | 1,319 Degree days | 1,012 Degree days | 1,507 Degree days | 10 |
| 1970s | 1,397 Degree days | 1,240 Degree days | 1,493 Degree days | 10 |
| 1980s | 1,264 Degree days | 970.16 Degree days | 1,441 Degree days | 10 |
| 1990s | 1,179 Degree days | 980.99 Degree days | 1,371 Degree days | 10 |
| 2000s | 1,192 Degree days | 1,003 Degree days | 1,370 Degree days | 10 |
| 2010s | 1,146 Degree days | 972.18 Degree days | 1,431 Degree days | 10 |
| 2020s | 992.49 Degree days | 862.09 Degree days | 1,120 Degree days | 6 |
More reference data data for Irun
- Cooling and heating degree days - Cities and FUAs — Cooling degree 42.33 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in cooling -4.27 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating -349.1 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating -80.76 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs, annual growth rate -15.32 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs — Change in cooling -279.75 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs — Cooling degree -13.56 % change on previous year (2025)
- Precipitation - Cities and FUAs — Extreme precipitation days 20 Days per year (2024)
- Precipitation - Cities and FUAs — Change in extreme precipitation 3.87 Days per year (2024)
- Dependency ratio - Cities and FUAs 35.7 Percentage of population aged 15-64 years (2022)
Frequently asked questions
- What is cooling and heating degree days - cities and fuas in Irun?
- Cooling and heating degree days - cities and fuas in Irun was 862.09 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 Irun?
- The highest recorded value was 1,687 Degree days in 1956.
- What is the lowest cooling and heating degree days - cities and fuas recorded in Irun?
- The lowest recorded value was 862.09 Degree days in 2025.
- How does Irun rank for cooling and heating degree days - cities and fuas?
- Irun ranks 934th out of 1314 regions with data for 2025.
- Is cooling and heating degree days - cities and fuas rising or falling in Irun?
- Over the last ten years it is down 19.3%. The long-run trend across the full record is falling.
- Where does this Irun 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