Precipitation anomalies in Iran
Iran: Precipitation anomalies was -77.7 millimeters in 2025. ◆ Volatile
Latest (2025)
-77.7 millimeters
Change on year
down 620.7%
World rank
128th
of 192 countries
All-time high
186.45 millimeters
in 1953
All-time low
-120.67 millimeters
in 1940
Years of data
86
1940–2025
Precipitation anomalies in Iran, 1940–2025
Source: Contains modified Copernicus Climate Change Service information (2026) – with major processing by Our World in Data. Measured in millimeters.
Analysis
Iran recorded -77.7 millimeters for precipitation anomalies in 2025.
That represents a change of down 620.7% on the previous year and down 1,214.5% over ten years.
Over the whole period, precipitation anomalies in Iran peaked at 186.45 millimeters in 1953 and was at its lowest, -120.67 millimeters, in 1940.
Iran ranks 128th of 192 countries on this measure, in the middle of the range.
The series is highly variable year to year, so single readings are best treated with caution.
Precipitation anomalies in Iran, year by year
| Year | millimeters | Change |
|---|---|---|
| 1940 | -120.67 millimeters | — |
| 1941 | -102.8 millimeters | -14.8% |
| 1942 | -71.35 millimeters | -30.6% |
| 1943 | -26.56 millimeters | -62.8% |
| 1944 | -83.94 millimeters | +216.1% |
| 1945 | -74.11 millimeters | -11.7% |
| 1946 | -102.85 millimeters | +38.8% |
| 1947 | -23.5 millimeters | -77.1% |
| 1948 | -1.08 millimeters | -95.4% |
| 1949 | 51.14 millimeters | -4846.4% |
| 1950 | -17.05 millimeters | -133.3% |
| 1951 | 63.57 millimeters | -472.9% |
| 1952 | -0.6464 millimeters | -101.0% |
| 1953 | 186.45 millimeters | -28945.1% |
| 1954 | 92.48 millimeters | -50.4% |
| 1955 | -37.91 millimeters | -141.0% |
| 1956 | -30.52 millimeters | -19.5% |
| 1957 | 111 millimeters | -463.7% |
| 1958 | -90.45 millimeters | -181.5% |
| 1959 | -30.1 millimeters | -66.7% |
| 1960 | -48.65 millimeters | +61.6% |
| 1961 | -31.97 millimeters | -34.3% |
| 1962 | -89.49 millimeters | +179.9% |
| 1963 | -1.15 millimeters | -98.7% |
| 1964 | -49.08 millimeters | +4162.6% |
| 1965 | -11.8 millimeters | -76.0% |
| 1966 | -66.09 millimeters | +460.3% |
| 1967 | -31.34 millimeters | -52.6% |
| 1968 | 32.7 millimeters | -204.3% |
| 1969 | 56.83 millimeters | +73.8% |
| 1970 | -75.41 millimeters | -232.7% |
| 1971 | -26.94 millimeters | -64.3% |
| 1972 | 114.64 millimeters | -525.5% |
| 1973 | -94.95 millimeters | -182.8% |
| 1974 | 60.79 millimeters | -164.0% |
| 1975 | -20.16 millimeters | -133.2% |
| 1976 | 56.35 millimeters | -379.5% |
| 1977 | 18.85 millimeters | -66.6% |
| 1978 | -33.01 millimeters | -275.2% |
| 1979 | 15.74 millimeters | -147.7% |
| 1980 | 21.14 millimeters | +34.3% |
| 1981 | -13.36 millimeters | -163.2% |
| 1982 | 75.09 millimeters | -662.1% |
| 1983 | -56.89 millimeters | -175.8% |
| 1984 | -7.13 millimeters | -87.5% |
| 1985 | -54.74 millimeters | +668.3% |
| 1986 | 70.76 millimeters | -229.3% |
| 1987 | -29.83 millimeters | -142.2% |
| 1988 | 9.84 millimeters | -133.0% |
| 1989 | -45.4 millimeters | -561.6% |
| 1990 | -63.95 millimeters | +40.9% |
| 1991 | 57.32 millimeters | -189.6% |
| 1992 | 74.79 millimeters | +30.5% |
| 1993 | 45.14 millimeters | -39.6% |
| 1994 | 10.4 millimeters | -77.0% |
| 1995 | -2.31 millimeters | -122.2% |
| 1996 | 64.16 millimeters | -2876.0% |
| 1997 | 27.78 millimeters | -56.7% |
| 1998 | 2.12 millimeters | -92.4% |
| 1999 | -30.69 millimeters | -1548.5% |
| 2000 | -53.71 millimeters | +75.0% |
| 2001 | -79.55 millimeters | +48.1% |
| 2002 | -13.83 millimeters | -82.6% |
| 2003 | -6.95 millimeters | -49.8% |
| 2004 | 34.3 millimeters | -593.8% |
| 2005 | -9.06 millimeters | -126.4% |
| 2006 | 0.9463 millimeters | -110.4% |
| 2007 | -4.9 millimeters | -617.8% |
| 2008 | -87.09 millimeters | +1677.4% |
| 2009 | 5.51 millimeters | -106.3% |
| 2010 | -91.24 millimeters | -1755.8% |
| 2011 | 6.31 millimeters | -106.9% |
| 2012 | -3.46 millimeters | -154.8% |
| 2013 | -28.72 millimeters | +729.8% |
| 2014 | -30.2 millimeters | +5.2% |
| 2015 | 6.97 millimeters | -123.1% |
| 2016 | -37.39 millimeters | -636.3% |
| 2017 | -29.9 millimeters | -20.0% |
| 2018 | 4.41 millimeters | -114.7% |
| 2019 | 99.31 millimeters | +2153.4% |
| 2020 | 69.53 millimeters | -30.0% |
| 2021 | -118.49 millimeters | -270.4% |
| 2022 | -55.9 millimeters | -52.8% |
| 2023 | -49.5 millimeters | -11.4% |
| 2024 | 14.92 millimeters | -130.1% |
| 2025 | -77.7 millimeters | -620.7% |
Iran compared with similar countries
- Iran's -77.7 millimeters is below the median for upper middle income countries, which is -15.85 millimeters, 4.9× the median. (50 countries reporting)
- Iran's -77.7 millimeters is below the median for Middle East, North Africa, Afghanistan & Pakistan, which is -27.45 millimeters, 2.8× the median. (22 countries reporting)
Biggest year-on-year movements
Years where Precipitation anomalies in Iran changed far more than this series normally does. A large move can be a real event or a change in how the figure was measured — the source note below says who published it.
| Year | Change | From | To |
|---|---|---|---|
| 1953 | +28945.1% | -0.6464 millimeters | 186.45 millimeters |
| 1949 | +4846.4% | -1.08 millimeters | 51.14 millimeters |
| 1964 | -4162.6% | -1.15 millimeters | -49.08 millimeters |
| 1996 | +2876.0% | -2.31 millimeters | 64.16 millimeters |
| 2019 | +2153.4% | 4.41 millimeters | 99.31 millimeters |
| 2010 | -1755.8% | 5.51 millimeters | -91.24 millimeters |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1940s | -55.57 millimeters | -120.67 millimeters | 51.14 millimeters | 10 |
| 1950s | 24.68 millimeters | -90.45 millimeters | 186.45 millimeters | 10 |
| 1960s | -24.01 millimeters | -89.49 millimeters | 56.83 millimeters | 10 |
| 1970s | 1.59 millimeters | -94.95 millimeters | 114.64 millimeters | 10 |
| 1980s | -3.05 millimeters | -56.89 millimeters | 75.09 millimeters | 10 |
| 1990s | 18.47 millimeters | -63.95 millimeters | 74.79 millimeters | 10 |
| 2000s | -21.43 millimeters | -87.09 millimeters | 34.3 millimeters | 10 |
| 2010s | -10.39 millimeters | -91.24 millimeters | 99.31 millimeters | 10 |
| 2020s | -36.19 millimeters | -118.49 millimeters | 69.53 millimeters | 6 |
Countries ranked near Iran
- 125 Costa Rica -76.39 millimeters compare
- 126 Uzbekistan -76.64 millimeters compare
- 127 Montenegro -77.37 millimeters compare
- 129 Denmark -78.27 millimeters compare
- 130 Slovakia -79.57 millimeters compare
- 131 Cyprus -80.67 millimeters compare
More climate change data for Iran
- Spring temperature anomalies 0.0713 °C (2026)
- Summer temperature anomalies 1.08 °C (2026)
- Temperature anomalies by month 0.2419 °C (2026)
- Share of global CO₂ emissions and population 0.8% (2100)
- Population, total, annual growth rate 0.9283 % change on previous year (2025)
- Population, total, per unit of GDP 0.0003 units per US$ of GDP (2025)
- Urban population, annual growth rate 1.39 % change on previous year (2025)
- Urban population, per unit of GDP 0.0002 units per US$ of GDP (2025)
- Urban population, per capita 0.7738 units per person (2025)
- Precipitation anomalies, annual growth rate -620.65 % change on previous year (2025)
Frequently asked questions
- What is precipitation anomalies in Iran?
- Precipitation anomalies in Iran was -77.7 millimeters in 2025, according to Contains modified Copernicus Climate Change Service information (2026) – with major processing by Our World in Data.
- What is the highest precipitation anomalies recorded in Iran?
- The highest recorded value was 186.45 millimeters in 1953.
- What is the lowest precipitation anomalies recorded in Iran?
- The lowest recorded value was -120.67 millimeters in 1940.
- How does Iran rank for precipitation anomalies?
- Iran ranks 128th out of 192 countries with data for 2025.
- Is precipitation anomalies rising or falling in Iran?
- Over the last ten years it is down 1,214.5%. The long-run trend across the full record is volatile.
- Where does this Iran data come from?
- The figures come from Contains modified Copernicus Climate Change Service information (2026) – with major processing by Our World in Data, published as part of Precipitation anomalies. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 86 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
Difference in a specific year's total precipitation—rain and snow—from the 1991–2020 average, measured in millimeters, excluding fog and dew.