As the impacts of climate change become increasingly evident, directors of credit unions should recognize climate governance and management as a strategic issue within their institutions. This guide emphasizes the importance of understanding directors’ duties, cooperative principles, and the profound effects of extreme weather events on credit union members. It is a valuable resource for directors in understanding the legal landscape, physical and transition risks associated with climate change, and best practices developed globally. It offers practical suggestions for board oversight and emphasizes the importance of engaging with members to align their credit unions’ commitments with transitioning to a more sustainable economy.