Southern Oscillation Index


A monthly summary of the Southern Oscillation Index (SOI), included as a six-monthly mean. The SOI is an indicator of El Niño (below −8) and La Niña (above +8) conditions. Data is current as at December 2017.

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Data Dictionary

Column Type Label Description
Year numeric
Month numeric
SOI numeric
Six month mean numeric

Additional Information

Field Value
Last updated July 11, 2019
Created October 25, 2018
Format CSV
License Creative Commons Attribution 3.0
Size 28.8 KiB
Data usability rating :
Contains open format machine-readable open data.