The 26th UN/INTOSAI Symposium organised jointly by the General Secretariat of INTOSAI and the United Nations Department of Economic and Social Affairs (UN DESA) in April 2024 at the UN in Vienna, Austria, was attended by more than 200 representatives from 82 Supreme Audit Institutions and international partner organizations and concerned the “Implementation of SDG 13 on climate action: role, contribution and experience of Supreme Audit Institutions (SAIs)”. Panellists and participants discussed SAI practices in auditing the impact of climate change, enabling conditions for auditing climate action and strengthening climate action – impacts of climate change audits, various legal frameworks for climate action, assessments of national action plans and climate strategies, data analyses, evaluation mechanisms, financial and budgetary aspects and key factors for implementing and auditing the SDGs, like the multi-stakeholder approach and whole-of-government approach to ensure coherent policies. Special importance was devoted to challenges faced by SAIs of Small Island Developing States (SIDS) due to climate change. Finally participants of the symposium adopted the “Conclusions and Recommendations” including the key messages of the symposium, to provide guidelines for future SDG-related audits and actions and cooperation of SAIs in this context.