This bulletin reviews the climate condition over the Greater Horn of Africa (GHA) region for the month of May 2017, and also highlights the rainfall and temperature outlook for the month of June 2017, together with the socio-economic impacts associated with both the observed and the predicted conditions. In the month of May rainfall is mainly experienced in areas in the parts of the northern sector as well as western and central parts equatorial sector of the Greater Horn of Africa (GHA). In May 2017, the Oceanic Nino Index (ONI) signal showed a neutral state but tending to positive index, with positive Indian Ocean Dipole (IOD) index as at the end of May 2017.