This toolkit is a comprehensive guide that supports groups or individuals – such as healthcare professionals, public health authorities, and local organisations – to develop awareness-raising campaigns for audiences in their community on the health risks and impacts caused by climate change. It provides step-by-step guidance, practical examples, and strategies for campaigns at low, moderate, and high budgets – making it adaptable across contexts and resources. The toolkit was developed and designed by Healthcare Without Harm Europe, and will be tested in four demonstration sites in 2026 (France, Slovenia, Austria and Romania), as part of the MOUNTADAPT project (Mission Project funded in 2024 - GA n°101155958).