Standardised Precipitation-Evapotranspiration Index in Vietnam
Vietnam: Standardised Precipitation-Evapotranspiration Index was -0.1963 in 2023. ◆ Volatile
Standardised Precipitation-Evapotranspiration Index in Vietnam, 1960–2023
Source: Global SPEI database (SPEIbase). https://spei.csic.es/database.html.
Analysis
The most recent figure for standardised precipitation-evapotranspiration index in Vietnam is -0.1963, measured in 2023.
Compared with earlier readings it is down 175.0% on the previous year and down 114.4% over ten years.
Over the whole period, standardised precipitation-evapotranspiration index in Vietnam peaked at 1.97 in 2008 and was at its lowest, -1.77, in 2009.
Vietnam ranks 87th of 189 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.
Standardised Precipitation-Evapotranspiration Index in Vietnam, year by year
| Year | Value | Change |
|---|---|---|
| 1960 | -0.4704 | — |
| 1961 | 1.39 | -394.5% |
| 1962 | -1.34 | -196.6% |
| 1963 | 0.1328 | -109.9% |
| 1964 | 0.4971 | +274.3% |
| 1965 | -0.5378 | -208.2% |
| 1966 | 0.8593 | -259.8% |
| 1967 | -0.7909 | -192.0% |
| 1968 | 0.0268 | -103.4% |
| 1969 | -1.61 | -6113.4% |
| 1970 | 1.48 | -191.9% |
| 1971 | 1.36 | -8.3% |
| 1972 | 1.14 | -16.4% |
| 1973 | 0.3635 | -68.0% |
| 1974 | 0.9655 | +165.6% |
| 1975 | 1.21 | +24.9% |
| 1976 | -0.5761 | -147.8% |
| 1977 | -1.61 | +179.9% |
| 1978 | 1.56 | -196.5% |
| 1979 | -1.26 | -180.8% |
| 1980 | 0.005 | -100.4% |
| 1981 | 0.5402 | +10704.0% |
| 1982 | 0.8002 | +48.1% |
| 1983 | 0.2632 | -67.1% |
| 1984 | 0.3819 | +45.1% |
| 1985 | 0.4606 | +20.6% |
| 1986 | 1.89 | +310.0% |
| 1987 | -1.75 | -192.6% |
| 1988 | -1.16 | -33.6% |
| 1989 | -1.63 | +40.6% |
| 1990 | 0.9928 | -160.8% |
| 1991 | -0.8574 | -186.4% |
| 1992 | -1.53 | +78.2% |
| 1993 | -1.61 | +5.5% |
| 1994 | 1.68 | -204.5% |
| 1995 | -0.3506 | -120.8% |
| 1996 | 1.03 | -394.6% |
| 1997 | 0.5261 | -49.1% |
| 1998 | -0.933 | -277.3% |
| 1999 | 1.72 | -284.1% |
| 2000 | -0.3009 | -117.5% |
| 2001 | 1.48 | -592.5% |
| 2002 | 1.25 | -15.6% |
| 2003 | -1.62 | -229.8% |
| 2004 | -1.73 | +6.7% |
| 2005 | 0.4231 | -124.4% |
| 2006 | -0.2094 | -149.5% |
| 2007 | 0.0003 | -100.1% |
| 2008 | 1.97 | +657666.7% |
| 2009 | -1.77 | -189.6% |
| 2010 | -1.6 | -9.3% |
| 2011 | 0.655 | -140.9% |
| 2012 | 0.9138 | +39.5% |
| 2013 | 1.36 | +49.2% |
| 2014 | -0.9062 | -166.5% |
| 2015 | -0.3566 | -60.6% |
| 2016 | 0.0886 | -124.8% |
| 2017 | 1.42 | +1498.6% |
| 2018 | 0.3585 | -74.7% |
| 2019 | -1.58 | -541.5% |
| 2020 | -0.8547 | -46.0% |
| 2021 | -0.1197 | -86.0% |
| 2022 | 0.2618 | -318.7% |
| 2023 | -0.1963 | -175.0% |
Vietnam compared with similar countries
- Vietnam's -0.1963 is above the median for upper middle income countries, which is -0.4275, 46% of the median. (55 countries reporting)
- Vietnam's -0.1963 is below the median for East Asia & Pacific, which is 0.0249. (27 countries reporting)
Biggest year-on-year movements
Years where Standardised Precipitation-Evapotranspiration Index in Vietnam 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 |
|---|---|---|---|
| 2008 | +657666.7% | 0.0003 | 1.97 |
| 1981 | +10704.0% | 0.005 | 0.5402 |
| 1969 | -6113.4% | 0.0268 | -1.61 |
| 2017 | +1498.6% | 0.0886 | 1.42 |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1960s | -0.1848 | -1.61 | 1.39 | 10 |
| 1970s | 0.4621 | -1.61 | 1.56 | 10 |
| 1980s | -0.0203 | -1.75 | 1.89 | 10 |
| 1990s | 0.0673 | -1.61 | 1.72 | 10 |
| 2000s | -0.0504 | -1.77 | 1.97 | 10 |
| 2010s | 0.0347 | -1.6 | 1.42 | 10 |
| 2020s | -0.2272 | -0.8547 | 0.2618 | 4 |
Countries ranked near Vietnam
More environment data for Vietnam
- Wood-based panels — Production, annual growth rate 20.83 % change on previous year (2024)
- Total greenhouse gas emissions excluding LULUCF (Mt CO2e), annual 7.61 % 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 0.6558 % 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 1.16 % change on previous year (2024)
- Methane (CH4) emissions from Building (Energy) (Mt CO2e), per unit of 0 Mt CO2e per US$ of GDP (2024)
- Methane (CH4) emissions from Building (Energy) (Mt CO2e), per capita 0 Mt CO2e per person (2024)
Frequently asked questions
- What is standardised precipitation-evapotranspiration index in Vietnam?
- Standardised precipitation-evapotranspiration index in Vietnam was -0.1963 in 2023, according to Global SPEI database (SPEIbase). https://spei.csic.es/database.html.
- What is the highest standardised precipitation-evapotranspiration index recorded in Vietnam?
- The highest recorded value was 1.97 in 2008.
- What is the lowest standardised precipitation-evapotranspiration index recorded in Vietnam?
- The lowest recorded value was -1.77 in 2009.
- How does Vietnam rank for standardised precipitation-evapotranspiration index?
- Vietnam ranks 87th out of 189 countries with data for 2023.
- Is standardised precipitation-evapotranspiration index rising or falling in Vietnam?
- Over the last ten years it is down 114.4%. The long-run trend across the full record is volatile.
- Where does this Vietnam data come from?
- The figures come from Global SPEI database (SPEIbase). https://spei.csic.es/database.html, published as part of Standardised Precipitation-Evapotranspiration Index. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 64 observations, free to reuse under CC BY 4.0 (World Bank Open Data).
About this data
The SPEI fulfills the requirements of a drought index since its multi-scalar character enables it to be used by different scientific disciplines to detect, monitor, and analyze droughts. Like the sc-PDSI and the SPI, the SPEI can measure drought severity according to its intensity and duration, and can identify the onset and end of drought episodes. The SPEI allows comparison of drought severity through time and space, since it can be calculated over a wide range of climates, as can the SPI.