This dataset contains forecast verification metrics and reporting outputs for the Seasonal Crop Yield Hindcasts produced for Ghana, Kenya, and Zimbabwe. Metrics include the Continuous Ranked Probability Skill Score (CRPSS), Ranked Probability Skill Score (RPSS), ROC-AUC. Metrics were computed from LPJmL crop yield hindcasts forced with bias-corrected ECMWF SEAS5 seasonal climate forecasts and verified against an ERA5-Land-forced reference simulation. Results are stratified by crop, initialisation month, and lead time.