The 70th Greater Horn of Africa Climate Outlook Forum (GHACOF70) was held from 19th to 20th May 2025, in Addis Ababa. The forum, which brought together climate scientists, policymakers, decision-makers, and sectoral experts, focused on delivering the seasonal forecast. The objectives were to review and document progress and impacts of the March to May (MAM) 2025 season, release the consolidated objective regional climate outlook for the June to September (JJAS) 2025 season, discuss the implications of the MAM 2025 climate forecast, and develop advisories and management strategies for various climate-sensitive socio-economic sectors.