Rainfall has continued to vary in its characteristic annually and seasonally over the years. Rainfall variability affects the ability to increase food production as required by the growing population creating a need to assess the rainfall characteristics that affect potato yields. It is not clear how these variations in potato yields are correlated to rainfall variations. The book addresses the effect of rainfall variability on potato production and evaluates local farmers’ adaptation measures to rainfall variability. The book analyses seasonal and annual rainfall and potato production data and correlated them with potato production. The book gives insight to farmers on the relationship between rainfall variability and Irish potato production and the possible adaptation measures to help them increase production.