**5. Conclusions**

This document presents a summary of research carried out in the period 1984– 2020, concerning the individual and coupled effects of climatic oscillations ENSO, AMO, and PDO, over dry periods in México. After reviewing 75 articles, the main conclusions reached are summarized below:


Given the potential predictability of these climatic indices, studies of this type open the possibility to roughly predict future droughts. Knowing the effects of climatic indices in advance, will aid in preventing and reducing adverse conditions in productive activities and society. These improved seasonal climate predictions play an essential role in climate change adaptation and water resources management.
