Abstract Climate change poses a significant threat to human life and wellbeing worldwide. Extreme weather events like heatwaves, storms or floods can have adverse impacts on health, as can many other factors influenced by climate change, such as allergens, UV radiation and vector-borne diseases. In order to support the action needed to protect and promote health and wellbeing, many National Public Health Institutes (NPHIs) aim to keep relevant stakeholders informed on the scientific evidence of the impacts of climate change on health. Reports that synthesise the evidence can help in the development of suitable and health-relevant climate change adaptation and mitigation measures. In this workshop, European Environment Agency assessments on climate and health are presented, including the European Climate Risk Assessment Report and recent outputs of the European Climate and Health Observatory. Next, three NPHIs introduce their recent national reports on the impact of climate change on health, sharing lessons learned and valuable insights into their content, process and reception, highlighting similarities and differences. The workshop will feature presentations by NPHIs from the United Kingdom (UK Health Security Agency), Germany (Robert Koch Institute), and the Netherlands (National Institute for Public Health and the Environment) as well as the European Climate and Health Observatory. The perspective of the European Climate and Health Observatory offers Europe-wide insights as a provider of tools and knowledge that support actions from NPHIs and other health actors. Our aim is to highlight the value of such reports, and inform and inspire NPHIs and other stakeholders that may be considering the publication of similar reports. The format of the workshop will be informative and interactive, with opportunity for Q&A, discussion, and engagement with the audience. By showcasing the recent reports, the workshop aims to increase awareness of climate change as a public health issue and establish NPHIs as key climate actors. Furthermore, it aims to highlight the importance of having a national, up-to-date evidence base to drive climate measures and enhance resilience. Key messages • National evidence-based reports on climate change and health are a useful tool for informing health-relevant climate change adaptation and mitigation measures. • Through the public health functions of surveillance, monitoring, responding and evaluating, NPHIs play a crucial role in collating and assessing the evidence on the health effects of climate change.