Latvia vs Vietnam: Standardised Precipitation-Evapotranspiration Index

Latvia
-0.2384
in 2023
Vietnam
-0.1963
in 2023
Latvia rank
90th
Vietnam rank
87th

Standardised Precipitation-Evapotranspiration Index over time

  • Latvia
  • Vietnam
-2-1012196019912023

How they compare

Vietnam currently reports -0.1963 against -0.2384 in Latvia, a difference of 0.0421.

The two have swapped places 37 times across 64 shared years of data; in 1960 it was Latvia ahead.

Latvia ranks 90th and Vietnam ranks 87th of 189 countries.

Across the 7 decades both report, Latvia averaged higher in 1 and Vietnam in 6.

Head to head by decade

Decade Latvia Vietnam Difference Ahead
1960s -0.2996 -0.1848 0.1148 Vietnam
1970s -0.1431 0.4621 0.6052 Vietnam
1980s 0.5845 -0.0203 0.6048 Latvia
1990s 0.0061 0.0673 0.0612 Vietnam
2000s -0.2621 -0.0504 0.2117 Vietnam
2010s -0.0155 0.0347 0.0502 Vietnam
2020s -0.5181 -0.2272 0.2909 Vietnam

Averages of every year both report within each decade.

Frequently asked questions

Which has higher standardised precipitation-evapotranspiration index, Latvia or Vietnam?
Vietnam, at -0.1963 against -0.2384 in Latvia as of 2023.
What is the difference in standardised precipitation-evapotranspiration index between Latvia and Vietnam?
0.0421, with Vietnam ahead.
How many years of comparable data are there for Latvia and Vietnam?
64 years are reported by both, from 1960 to 2023.
How do Latvia and Vietnam rank globally for standardised precipitation-evapotranspiration index?
Latvia ranks 90th and Vietnam ranks 87th of 189 countries.
Where does this data come from?
Global SPEI database (SPEIbase). https://spei.csic.es/database.html, published as Standardised Precipitation-Evapotranspiration Index. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Latvia vs Vietnam: Standardised Precipitation-Evapotranspiration Index. Statizoid, drawing on Global SPEI database (SPEIbase). https://spei.csic.es/database.html. Retrieved 19 August 2026, from https://environment.statizoid.com/compare/standardised-precipitation-evapotranspiration-index/latvia/viet-nam/

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About this data

Indicator
Standardised Precipitation-Evapotranspiration Index
Source
Global SPEI database (SPEIbase). https://spei.csic.es/database.html
Licence
CC BY 4.0 (World Bank Open Data)
Coverage
189 places, 12,095 data points, 1960–2023
Last refreshed

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.