Sierra Leone vs Singapore: Standardised Precipitation-Evapotranspiration Index

Sierra Leone
0.836
in 2023
Singapore
0.8521
in 2023
Sierra Leone rank
18th
Singapore rank
17th

Standardised Precipitation-Evapotranspiration Index over time

  • Sierra Leone
  • Singapore
-2-1012196019912023

How they compare

Singapore currently reports 0.8521 against 0.836 in Sierra Leone, a difference of 0.0161.

The two have swapped places 29 times across 64 shared years of data; in 1960 it was Sierra Leone ahead.

Sierra Leone ranks 18th and Singapore ranks 17th of 189 countries.

Across the 7 decades both report, Sierra Leone averaged higher in 2 and Singapore in 5.

Head to head by decade

Decade Sierra Leone Singapore Difference Ahead
1960s 0.7209 -0.1585 0.8794 Sierra Leone
1970s -0.5689 -0.5741 0.0053 Sierra Leone
1980s -1.27 -0.3081 0.9586 Singapore
1990s -0.7361 -0.5113 0.2248 Singapore
2000s -0.4989 0.2649 0.7638 Singapore
2010s -0.5009 -0.3318 0.1691 Singapore
2020s -0.0575 0.7584 0.8158 Singapore

Averages of every year both report within each decade.

Frequently asked questions

Which has higher standardised precipitation-evapotranspiration index, Sierra Leone or Singapore?
Singapore, at 0.8521 against 0.836 in Sierra Leone as of 2023.
What is the difference in standardised precipitation-evapotranspiration index between Sierra Leone and Singapore?
0.0161, with Singapore ahead.
How many years of comparable data are there for Sierra Leone and Singapore?
64 years are reported by both, from 1960 to 2023.
How do Sierra Leone and Singapore rank globally for standardised precipitation-evapotranspiration index?
Sierra Leone ranks 18th and Singapore ranks 17th 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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Sierra Leone vs Singapore: Standardised Precipitation-Evapotranspiration Index. Statizoid, drawing on Global SPEI database (SPEIbase). https://spei.csic.es/database.html. Retrieved 21 August 2026, from https://environment.statizoid.com/compare/standardised-precipitation-evapotranspiration-index/sierra-leone/singapore/

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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.