Tunisia’s agricultural system is central to the stability of the country, but it is also extremely prone to climate risks such as droughts and reduced or more variable rainfall. It is predicted that agricultural yields from key crops like wheat and olives will decline. These climate risks on Tunisia’s agricultural and wider food system can lead to socioeconomic instability and potentially cause security risks. Furthermore, these risks can have knock-on effects that cross national borders, sectors and systems. Tunisia’s capacity to adapt to climate change is undermined by three sets of political, governance and socio-economic factors, or so-called ‘climate-related development risks’, namely (1) governance and policy coherence challenges; (2) food import dependency and an export-oriented agri-food system; and (3) territorial inequalities. These factors contribute, directly or indirectly, to the likelihood of cascading climate risks that start with Tunisia’s agri-food system. Due to the country’s reduced adaptive capacity, climate risks in Tunisia’s agri-food system can have an impact on Europe through trade and supply chains, security relations, financial markets, international aid operations as well as migration patterns. It is key that the European Union recognises these risks in its Green Deal and adaptation efforts, as well as in a much wider group of policies, ranging from trade to migration.