Résumé : In this paper we discuss the climate change (CC) vulnerability for rural microfinance. In particular, we seek to assess how the geographical allocation of services influences the vulnerability of microfinance institutions and clients to climate change impacts. As case study we analyse the biggest rural microfinance programme in Brazil: AgroAmigo, that operates in a particularly drought vulnerable area, i.e. the Northeastern region. Accordingly, we implement a correlation analysis between Agroamigo’s geographical credit allocation and local climate change vulnerabilities. The paper shows that the geographical distribution of services increases the climate change vulnerability of the microfinance institution’s (MFI) portfolio, whilst not necessarily offsetting CC vulnerability of clients because fewer credit amounts per person is allocated to the most vulnerable regions. Such results call for a better understanding of the climate change risk and the introduction of tailored strategies for microfinance programmes that could, at once, provide more adapted services to the most vulnerable population while aid manage and/or mitigate potential climatic risks of MFI’s portfolio, in particular those operating in hazard prone areas.