Two separate NETCDF containing time series of the Seasonal Location Index (SLI) and Rainfall Cluster index (RCI). These indices are the basis for the results presented in Seregina et al. (2020, DOI:). Both indices were calculated according the method of Riddle and Wilks (2013, DOI: 10.1002/joc.3429) from the Climate Hazards InfraRed Precipitation with Stations (CHIRPS, DOI: 10.1038/sdata.2015.66) for the time period 1981–2018 over the Greater Horn of Africa.