Climate variability influences geographical and temporal disease outbreaks in East Africa. Malaria, cholera and dengue are some of the most frequent disease outbreaks and conditions which are strongly linked to climate in the region.Climate variability also affects malnutrition in a myriad of ways, both immediate causes and underlying causes.Experts on WaSH, Health and Climate from the East Africa region convened to discuss how best climatic information could be used to plan WaSH interventions aiming to reduce the impact of disease outbreaks on population. It was evident from the workshop that there is a current opportunity for WaSH, Health and Climate actors to design and create adapted climatic tools and enhance forecast of outbreaks to set outbreak early warning systems not only in a single country, but in wider geographical areas, like the Horn and East Africa. Forecast-based Financing approaches are linked to climatic data to preposition goods and minimize impact of forecasted outbreaks. However, there is a long path for stakeholders to embrace these tools and shift from reactive response to using forecasts for anticipatory action.