The year 2020 was one of the three warmest on record. This year, we must also brace ourselves for a long, hot summer as the ongoing COVID-19 pandemic exacerbates the problems caused by prolonged periods of heat. This webinar looks at different areas of ongoing work on preventing the adverse health outcomes from heat through good public health practice. The session presents the latest scientific evidence related to effective heat health action planning and features case studies from European countries. WHO/Europe will present an update on its #KeepCool campaign and release a series of video clips to support communication with the public on heat health prevention.