Heating Degree Days in Iran
Iran: Heating Degree Days was 2,621 in 2024. ▼ Falling
Latest (2024)
2,621
Change on year
up 6.2%
World rank
64th
of 189 countries
All-time high
4,070
in 1964
All-time low
2,417
in 2010
Years of data
65
1960–2024
Heating Degree Days in Iran, 1960–2024
Source: World Bank, Climate Change Knowledge Portal. https://climateknowledgeportal.worldbank.org.
Analysis
In 2024, heating degree days in Iran stood at 2,621.
Compared with earlier readings it is up 6.2% on the previous year and down 14.5% over ten years.
Over the whole period, heating degree days in Iran peaked at 4,070 in 1964 and was at its lowest, 2,417, in 2010.
That places Iran 64th out of 189 countries with data for 2024, putting it in the middle of the range.
The long-run direction has been consistently falling across the 65 years of available data.
Heating Degree Days in Iran, year by year
| Year | Value | Change |
|---|---|---|
| 1960 | 3,332 | — |
| 1961 | 3,556 | +6.7% |
| 1962 | 3,223 | -9.4% |
| 1963 | 3,103 | -3.7% |
| 1964 | 4,070 | +31.1% |
| 1965 | 3,351 | -17.7% |
| 1966 | 2,921 | -12.8% |
| 1967 | 3,575 | +22.4% |
| 1968 | 3,376 | -5.6% |
| 1969 | 3,387 | +0.3% |
| 1970 | 3,023 | -10.8% |
| 1971 | 3,191 | +5.6% |
| 1972 | 4,049 | +26.9% |
| 1973 | 3,388 | -16.3% |
| 1974 | 3,736 | +10.3% |
| 1975 | 3,628 | -2.9% |
| 1976 | 3,647 | +0.5% |
| 1977 | 3,221 | -11.7% |
| 1978 | 3,105 | -3.6% |
| 1979 | 3,284 | +5.8% |
| 1980 | 3,267 | -0.5% |
| 1981 | 3,195 | -2.2% |
| 1982 | 4,061 | +27.1% |
| 1983 | 3,765 | -7.3% |
| 1984 | 3,750 | -0.4% |
| 1985 | 3,382 | -9.8% |
| 1986 | 3,778 | +11.7% |
| 1987 | 3,232 | -14.4% |
| 1988 | 3,293 | +1.9% |
| 1989 | 3,624 | +10.0% |
| 1990 | 3,302 | -8.9% |
| 1991 | 3,244 | -1.7% |
| 1992 | 3,754 | +15.7% |
| 1993 | 3,373 | -10.1% |
| 1994 | 3,071 | -9.0% |
| 1995 | 3,052 | -0.6% |
| 1996 | 3,248 | +6.4% |
| 1997 | 3,237 | -0.3% |
| 1998 | 2,854 | -11.8% |
| 1999 | 2,855 | +0.0% |
| 2000 | 3,040 | +6.5% |
| 2001 | 2,641 | -13.1% |
| 2002 | 2,882 | +9.1% |
| 2003 | 2,946 | +2.2% |
| 2004 | 2,779 | -5.7% |
| 2005 | 2,985 | +7.4% |
| 2006 | 2,960 | -0.9% |
| 2007 | 3,053 | +3.1% |
| 2008 | 3,199 | +4.8% |
| 2009 | 2,849 | -10.9% |
| 2010 | 2,417 | -15.2% |
| 2011 | 3,130 | +29.5% |
| 2012 | 3,072 | -1.8% |
| 2013 | 2,779 | -9.5% |
| 2014 | 3,067 | +10.4% |
| 2015 | 2,753 | -10.2% |
| 2016 | 2,627 | -4.6% |
| 2017 | 2,768 | +5.4% |
| 2018 | 2,508 | -9.4% |
| 2019 | 2,871 | +14.5% |
| 2020 | 2,996 | +4.3% |
| 2021 | 2,523 | -15.8% |
| 2022 | 2,518 | -0.2% |
| 2023 | 2,469 | -2.0% |
| 2024 | 2,621 | +6.2% |
Iran compared with similar countries
- Iran's 2,621 is above the median for upper middle income countries, which is 201.25, 13.0× the median. (57 countries reporting)
- Iran's 2,621 is above the median for Middle East, North Africa, Afghanistan & Pakistan, which is 816.02, 3.2× the median. (22 countries reporting)
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1960s | 3,389 | 2,921 | 4,070 | 10 |
| 1970s | 3,427 | 3,023 | 4,049 | 10 |
| 1980s | 3,535 | 3,195 | 4,061 | 10 |
| 1990s | 3,199 | 2,854 | 3,754 | 10 |
| 2000s | 2,933 | 2,641 | 3,199 | 10 |
| 2010s | 2,799 | 2,417 | 3,130 | 10 |
| 2020s | 2,625 | 2,469 | 2,996 | 5 |
Countries ranked near Iran
More environment data for Iran
- Historical exposure to drought — Land soil moisture anomaly -30.46 Percentage change (2025)
- Historical exposure to drought — Cropland soil moisture anomaly -21.27 Percentage change (2025)
- Total greenhouse gas emissions excluding LULUCF (Mt CO2e), annual 2.4 % change on previous year (2024)
- Total greenhouse gas emissions excluding LULUCF (Mt CO2e), per unit 0 Mt CO2e per US$ of GDP (2024)
- Total greenhouse gas emissions excluding LULUCF (Mt CO2e), per capita 0 Mt CO2e per person (2024)
- Methane (CH4) emissions from Agriculture (Mt CO2e), annual growth rate 1.9 % change on previous year (2024)
- Methane (CH4) emissions from Agriculture (Mt CO2e), per unit of GDP 0 Mt CO2e per US$ of GDP (2024)
- Methane (CH4) emissions from Agriculture (Mt CO2e), per capita 0 Mt CO2e per person (2024)
- Methane (CH4) emissions from Building (Energy) (Mt CO2e), annual -0.0807 % change on previous year (2024)
- Methane (CH4) emissions from Building (Energy) (Mt CO2e), per unit of 0 Mt CO2e per US$ of GDP (2024)
Frequently asked questions
- What is heating degree days in Iran?
- Heating degree days in Iran was 2,621 in 2024, according to World Bank, Climate Change Knowledge Portal. https://climateknowledgeportal.worldbank.org.
- What is the highest heating degree days recorded in Iran?
- The highest recorded value was 4,070 in 1964.
- What is the lowest heating degree days recorded in Iran?
- The lowest recorded value was 2,417 in 2010.
- How does Iran rank for heating degree days?
- Iran ranks 64th out of 189 countries with data for 2024.
- Is heating degree days rising or falling in Iran?
- Over the last ten years it is down 14.5%. The long-run trend across the full record is falling.
- Where does this Iran data come from?
- The figures come from World Bank, Climate Change Knowledge Portal. https://climateknowledgeportal.worldbank.org, published as part of Heating Degree Days. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 65 observations, free to reuse under CC BY 4.0 (World Bank Open Data).
About this data
A heating degree day (HDD) is a measurement designed to track energy use. It is the number of degrees that a day's average temperature is below 18°C (65°F). Daily degree days are accumulated to obtain annual values.