Somalia vs South Sudan: Standardised Precipitation-Evapotranspiration Index

Somalia
-0.8577
in 2023
South Sudan
-0.8559
in 2023
Somalia rank
127th
South Sudan rank
126th

Standardised Precipitation-Evapotranspiration Index over time

  • Somalia
  • South Sudan
-202196019912023

How they compare

South Sudan currently reports -0.8559 against -0.8577 in Somalia, a difference of 0.0018.

The two have swapped places 31 times across 64 shared years of data; in 1960 it was Somalia ahead.

Somalia ranks 127th and South Sudan ranks 126th of 189 countries.

Somalia has averaged higher in every one of the 7 decades both report.

Head to head by decade

Decade Somalia South Sudan Difference Ahead
1960s 0.9856 0.8366 0.149 Somalia
1970s -0.1121 -0.2813 0.1692 Somalia
1980s 0.2795 -0.8117 1.09 Somalia
1990s -0.0142 -0.0771 0.0629 Somalia
2000s -0.1933 -0.5656 0.3724 Somalia
2010s 0.0952 -0.3428 0.438 Somalia
2020s -0.0864 -0.2631 0.1767 Somalia

Averages of every year both report within each decade.

Frequently asked questions

Which has higher standardised precipitation-evapotranspiration index, Somalia or South Sudan?
South Sudan, at -0.8559 against -0.8577 in Somalia as of 2023.
What is the difference in standardised precipitation-evapotranspiration index between Somalia and South Sudan?
0.0018, with South Sudan ahead.
How many years of comparable data are there for Somalia and South Sudan?
64 years are reported by both, from 1960 to 2023.
How do Somalia and South Sudan rank globally for standardised precipitation-evapotranspiration index?
Somalia ranks 127th and South Sudan ranks 126th 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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Somalia vs South Sudan: Standardised Precipitation-Evapotranspiration Index. Statizoid, drawing on Global SPEI database (SPEIbase). https://spei.csic.es/database.html. Retrieved 22 August 2026, from https://environment.statizoid.com/compare/standardised-precipitation-evapotranspiration-index/somalia-fed-rep/south-sudan/

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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.