As the climate-related impact increases in frequency and severity, there is growing attention from academics, policymakers and peacebuilders on the relationship between climate variability and conflict. Little attention has been paid to understanding the uneven impact of climate variability on intercommunal conflicts. This study aims to examine this discourse by exploring why climate variability contributes to inter-communal conflicts in some areas but not in others. It seeks to answer the research question: Why does climate variability contribute to the onset of inter-communal conflict in some countries and not in others? The independent variable measured was climate variability, and the dependent variable was inter-communal conflict. The assembled causal mechanism outlines how climate variability contributes to deepened existing community vulnerabilities and can lead to grievances and, consequently, mobilisation in the form of bandits. The hypothesis is derived from the proposed theory. The hypothesis reads: "Time period of Elnino is associated with high levels of intercommunal conflict". The study applied a Structured, Focused Comparison method and analysed two cases within a specific timeframe from 2016 to 2017. These cases, derived from Kenya, are Laikipia and Isiolo Counties. The results indicate a positive hypothesized relationship. Undertaking this study contributed to the empirics and causal mechanism through which climate variability triggered by Elnino contributes to inter-communal conflict.