The First Global Forum for Heat and Health will be held from December 17-20, 2018, in Hong Kong. This forum is an initiative of the Global Heat Health Information Network (GHHIN), an international collaborative effort of the World Health Organization, World Meteorological Organization, U.S. National Oceanic and Atmospheric Administration Climate Program Office, and several academic, meteorological. and health service partners. This event will provide an international platform for scientists and other stakeholders to facilitate collaborative learning about local and global evidence-based initiatives in heat and health sciences and develop a technical agenda to highlight the GHHIN scientific priorities. Participants will also have the opportunity to attend hands-on simulations and skills-based workshops on heat communications as well as travel to local health-health project sites.