Historical exposure to drought — Land soil moisture anomaly in Samoa
Samoa: Historical exposure to drought — Land soil moisture anomaly was 0.3482 Percentage change in 2025. ◆ Volatile
Historical exposure to drought — Land soil moisture anomaly in Samoa, 1950–2025
Source: Organisation for Economic Co-operation and Development. Measured in Percentage change.
Analysis
In 2025, historical exposure to drought — land soil moisture anomaly in Samoa stood at 0.3482 Percentage change.
The figure is down 91.9% on the previous year and up 110.1% over ten years.
Over the whole period, historical exposure to drought — land soil moisture anomaly in Samoa peaked at 13.79 Percentage change in 1973 and was at its lowest, -9.5 Percentage change, in 1998.
Samoa ranks 53rd of 191 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.
Historical exposure to drought — Land soil moisture anomaly in Samoa, year by year
| Year | Percentage change | Change |
|---|---|---|
| 1950 | -2.21 Percentage change | — |
| 1951 | -6.15 Percentage change | +177.7% |
| 1952 | 0.8729 Percentage change | -114.2% |
| 1953 | -3.71 Percentage change | -524.5% |
| 1954 | -0.433 Percentage change | -88.3% |
| 1955 | -4.84 Percentage change | +1016.9% |
| 1956 | -1.32 Percentage change | -72.7% |
| 1957 | -4.36 Percentage change | +230.6% |
| 1958 | 1.44 Percentage change | -133.0% |
| 1959 | 4.14 Percentage change | +187.7% |
| 1960 | 11.12 Percentage change | +168.4% |
| 1961 | -0.804 Percentage change | -107.2% |
| 1962 | 4.05 Percentage change | -603.3% |
| 1963 | 0.3322 Percentage change | -91.8% |
| 1964 | 1.77 Percentage change | +432.5% |
| 1965 | 0.4008 Percentage change | -77.3% |
| 1966 | 0.3258 Percentage change | -18.7% |
| 1967 | 0.5607 Percentage change | +72.1% |
| 1968 | -8.71 Percentage change | -1652.7% |
| 1969 | -1.56 Percentage change | -82.0% |
| 1970 | -1.73 Percentage change | +10.9% |
| 1971 | -4.94 Percentage change | +184.9% |
| 1972 | -5.84 Percentage change | +18.1% |
| 1973 | 13.79 Percentage change | -336.3% |
| 1974 | -7.13 Percentage change | -151.7% |
| 1975 | 0.6171 Percentage change | -108.7% |
| 1976 | -2.51 Percentage change | -505.9% |
| 1977 | -2.59 Percentage change | +3.3% |
| 1978 | 5.65 Percentage change | -318.2% |
| 1979 | -1.32 Percentage change | -123.4% |
| 1980 | 3.24 Percentage change | -345.6% |
| 1981 | -0.2122 Percentage change | -106.5% |
| 1982 | 0.3797 Percentage change | -278.9% |
| 1983 | -6.33 Percentage change | -1768.0% |
| 1984 | -2.56 Percentage change | -59.5% |
| 1985 | -1.2 Percentage change | -53.2% |
| 1986 | -0.2762 Percentage change | -77.0% |
| 1987 | -5.75 Percentage change | +1982.9% |
| 1988 | 2.59 Percentage change | -145.1% |
| 1989 | -5.66 Percentage change | -318.2% |
| 1990 | -2.63 Percentage change | -53.5% |
| 1991 | 2.74 Percentage change | -204.1% |
| 1992 | 2.54 Percentage change | -7.3% |
| 1993 | 6.16 Percentage change | +142.7% |
| 1994 | 3.39 Percentage change | -45.0% |
| 1995 | 3.58 Percentage change | +5.8% |
| 1996 | -2.34 Percentage change | -165.4% |
| 1997 | -4.82 Percentage change | +105.7% |
| 1998 | -9.5 Percentage change | +97.2% |
| 1999 | -1.29 Percentage change | -86.5% |
| 2000 | -2.01 Percentage change | +56.0% |
| 2001 | 0.294 Percentage change | -114.7% |
| 2002 | -1.47 Percentage change | -598.7% |
| 2003 | 2.95 Percentage change | -301.2% |
| 2004 | -0.8957 Percentage change | -130.4% |
| 2005 | 7.56 Percentage change | -943.7% |
| 2006 | 0.7309 Percentage change | -90.3% |
| 2007 | 5.99 Percentage change | +719.0% |
| 2008 | 1.82 Percentage change | -69.6% |
| 2009 | 2.83 Percentage change | +55.6% |
| 2010 | 3.39 Percentage change | +19.7% |
| 2011 | -4.73 Percentage change | -239.4% |
| 2012 | -5.3 Percentage change | +12.0% |
| 2013 | 9.3 Percentage change | -275.6% |
| 2014 | 1.02 Percentage change | -89.0% |
| 2015 | -3.46 Percentage change | -438.7% |
| 2016 | -5.37 Percentage change | +55.5% |
| 2017 | 8.02 Percentage change | -249.3% |
| 2018 | -2.36 Percentage change | -129.4% |
| 2019 | 6.31 Percentage change | -367.7% |
| 2020 | 4.98 Percentage change | -21.1% |
| 2021 | -2.89 Percentage change | -158.2% |
| 2022 | 0.8464 Percentage change | -129.2% |
| 2023 | -1.48 Percentage change | -274.3% |
| 2024 | 4.29 Percentage change | -391.0% |
| 2025 | 0.3482 Percentage change | -91.9% |
Samoa compared with similar countries
- Samoa's 0.3482 Percentage change is above the median for upper middle income countries, which is -3.73 Percentage change. (46 countries reporting)
- Samoa's 0.3482 Percentage change is above the median for East Asia & Pacific, which is 0.1661 Percentage change, 2.1× the median. (24 countries reporting)
Biggest year-on-year movements
Years where Historical exposure to drought — Land soil moisture anomaly in Samoa 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 |
|---|---|---|---|
| 1987 | -1982.9% | -0.2762 Percentage change | -5.75 Percentage change |
| 1983 | -1768.0% | 0.3797 Percentage change | -6.33 Percentage change |
| 1968 | -1652.7% | 0.5607 Percentage change | -8.71 Percentage change |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1950s | -1.66 Percentage change | -6.15 Percentage change | 4.14 Percentage change | 10 |
| 1960s | 0.7479 Percentage change | -8.71 Percentage change | 11.12 Percentage change | 10 |
| 1970s | -0.6008 Percentage change | -7.13 Percentage change | 13.79 Percentage change | 10 |
| 1980s | -1.58 Percentage change | -6.33 Percentage change | 3.24 Percentage change | 10 |
| 1990s | -0.2173 Percentage change | -9.5 Percentage change | 6.16 Percentage change | 10 |
| 2000s | 1.78 Percentage change | -2.01 Percentage change | 7.56 Percentage change | 10 |
| 2010s | 0.6831 Percentage change | -5.37 Percentage change | 9.3 Percentage change | 10 |
| 2020s | 1.02 Percentage change | -2.89 Percentage change | 4.98 Percentage change | 6 |
Countries ranked near Samoa
- 50 Colombia 0.4233 Percentage change compare
- 51 Greenland 0.3961 Percentage change compare
- 52 Cabo Verde -8.02 Percentage change compare
- 52 Ecuador 0.3767 Percentage change compare
- 54 Bhutan 0.2782 Percentage change compare
- 55 Myanmar -0.016 Percentage change compare
- 56 Belarus -0.1734 Percentage change compare
More environment data for Samoa
- Historical exposure to drought — Cropland soil moisture anomaly 0.3183 Percentage change (2025)
- Standard Deviation, annual growth rate 0 % change on previous year (2025)
- Standard Deviation 0.23 °C (2025)
- Temperature change 0.919 °C (2025)
- Total greenhouse gas emissions excluding LULUCF (Mt CO2e), annual 2.68 % 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 -2.51 % 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)
Frequently asked questions
- What is historical exposure to drought — land soil moisture anomaly in Samoa?
- Historical exposure to drought — land soil moisture anomaly in Samoa was 0.3482 Percentage change in 2025, according to Organisation for Economic Co-operation and Development.
- What is the highest historical exposure to drought — land soil moisture anomaly recorded in Samoa?
- The highest recorded value was 13.79 Percentage change in 1973.
- What is the lowest historical exposure to drought — land soil moisture anomaly recorded in Samoa?
- The lowest recorded value was -9.5 Percentage change in 1998.
- How does Samoa rank for historical exposure to drought — land soil moisture anomaly?
- Samoa ranks 53rd out of 191 countries with data for 2025.
- Is historical exposure to drought — land soil moisture anomaly rising or falling in Samoa?
- Over the last ten years it is up 110.1%. The long-run trend across the full record is volatile.
- Where does this Samoa data come from?
- The figures come from Organisation for Economic Co-operation and Development, published as part of Historical exposure to drought — Land soil moisture anomaly. 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
The dataset provides annual anomalies in land and cropland soil moisture content of the top soil layer (0 to 7 cm) compared to the reference period 1981-2010. Exposure indicators to drought have been prepared by the Organisation for Economic Co-operation and Development (OECD). Please see the working paper for a more complete description of the methods. The datasets span the period 1981-2024 and is the result of the use of a variety of geospatial data sources, including the ERA5-Land averaged monthly data of volumetric soil moisture and ESA CCI land cover data. Average anomalies have been calculated for both land and cropland exposure to drought. The dataset has a global coverage on a national level; on the sub-national TL2 level (i.e. large subnational regions) results are reported for all OECD countries as well as for Argentina, Brazil, China, India, Indonesia and South Africa. A number of aggregates are included: Euro area, European Union, Advanced economies, Emerging market economies, G7, G20, OECD, OECD Europe, OECD Asia Oceania, OECD Americas and the LAC region. Data source(s): Copernicus Climate Change Initiative land cover data and Copernicus Climate Data Store monthly soil moisture data based on the ERA5-Land reanalysis dataset. Contact: ENV.Stat@oecd.org