Latest SOI 1887 1989 Base

The Southern Oscillation Index (SOI) - Daily

Created 24/02/2025

Updated 24/02/2025

Text file of the latest SOI values calculated using the 1887-1989 base period. The file provides the daily SOI value for the previous day, mean daily SOI values for the previous 30 and 90 day periods, and the mean monthly SOI values for the previous three months.

Source

This data file or API can be downloaded from:

https://data.longpaddock.qld.gov.au/SeasonalClimateOutlook/SouthernOscillationIndex/SOIDataFiles/LatestSOI1887-1989Base.txt