Rising threats from climate change have demanded the creation of effective adaptation strategies and frameworks to help prepare communities against adverse environmental impacts. While successful climate adaptation requires support and cooperation between governments and the public, many governments lack the capacity or support necessary to gain public trust and effectively enforce adaptation strategies. Capacity-building strategies can aid governments and the public in this regard. Through a thematic literature review and Delphi study, this research reports on the most effective capacity-building methods for citizen engagement to create behavioural change towards climate adaptation. Results show that effective citizen engagement can lead to increased climate adaptation support as well as behavioural change in citizens and that multiple capacity-building methods (i.e., education/training, youth empowerment, etc.) are needed for effective citizen engagement in climate adaptation. Hence, governments should focus on bottom-up communication and facilitation techniques when engaging with citizens and communities on climate adaptation.