Climate change adaptation decision-making frameworks have evolved over the past three decades, with the management of information and knowledge now a key element of these processes. This paper examines the use of climate change-related information for national adaptation planning and decision-making in the Pacific Islands region to better understand the use of, and demand for, such information. Using an appreciative inquiry approach, a situation analysis was undertaken to examine the information praxis of national governments in Papua New Guinea, Tonga and Tuvalu, as well as the Secretariat of the Pacific Regional Environment Programme. The study revealed that adaptation decisions are (i) driven by national strategies and priorities which are innately community-centred, (ii) largely made through collaborative structures involving multiple stakeholders within a specific governance or project setting, and (iii) informed by a range of climatic and nonclimatic information from domestic, regional and international sources. The study also affirmed the importance of information and knowledge management to national adaptation planning and decision-making, evidence of collaborative and multistakeholder decision-making processes, and the trend towards country-driven and user-centred information and knowledge production. The study recommends dedicated commitment to and investment in information and knowledge management for Pacific Islands, and the need for a holistic understanding of the complex environment in which climate change adaptation takes place.