ArabCOF 3 was held at the headquarters of the Egyptian Meteorological Authority in Cairo on 26-29 November 2018, in conjunction with other RCOFs, namely Mediterranean Climate Outlook Forum (MedCOF), South-East European Climate Outlook Forum (SEECOF), and Regional Climate Outlook Forum for Northern Africa (PRESANORD). The meeting aimed at preparing seasonal forecasts for the boreal winter, (December 2018 to February 2019) across the entire Mediterranean region, and for each of sub-regions the Arab, North Africa and South-East Europe. Seasonal forecasts prepared by the different forums were also compared to ensure their harmony in their common domains, with a view of monitoring and evaluating regional climate trends of the Arab region while benefiting from other forums in this regard. The forum also discussed user’s engagement from the environment, agriculture and water resources sectors to understand their needs and guide them on the use of climate information in the decision-making process and maximize the use of seasonal predictions to take appropriate actions. A number of international experts and representatives from different regional networks provided technical guidance and facilitated the development of seasonal outlooks for each of sub-regions, including the Arab region.