Gambia vs Senegal: Standardised Precipitation-Evapotranspiration Index

Gambia
-0.5534
in 2023
Senegal
-0.5964
in 2023
Gambia rank
108th
Senegal rank
110th

Standardised Precipitation-Evapotranspiration Index over time

  • Gambia
  • Senegal
-2-101196019912023

How they compare

Gambia currently reports -0.5534 against -0.5964 in Senegal, a difference of 0.043.

The two have swapped places 26 times across 64 shared years of data; in 1960 it was Gambia ahead.

Gambia ranks 108th and Senegal ranks 110th of 189 countries.

Across the 7 decades both report, Gambia averaged higher in 4 and Senegal in 3.

Head to head by decade

Decade Gambia Senegal Difference Ahead
1960s 0.5108 0.6022 0.0915 Senegal
1970s -0.5784 -0.501 0.0774 Senegal
1980s -0.7709 -0.7907 0.0198 Gambia
1990s -0.7289 -0.7614 0.0325 Gambia
2000s -0.659 -0.6565 0.0025 Senegal
2010s -0.4555 -0.5058 0.0504 Gambia
2020s -0.2019 -0.2708 0.0689 Gambia

Averages of every year both report within each decade.

Frequently asked questions

Which has higher standardised precipitation-evapotranspiration index, Gambia or Senegal?
Gambia, at -0.5534 against -0.5964 in Senegal as of 2023.
What is the difference in standardised precipitation-evapotranspiration index between Gambia and Senegal?
0.043, with Gambia ahead.
How many years of comparable data are there for Gambia and Senegal?
64 years are reported by both, from 1960 to 2023.
How do Gambia and Senegal rank globally for standardised precipitation-evapotranspiration index?
Gambia ranks 108th and Senegal ranks 110th 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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Gambia vs Senegal: 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/gambia-the/senegal/

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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.