The greatest remote impacts of El Nino occur during the winter in each hemisphere: December-February in the Northern Hemisphere, and June-August in the Southern Hemisphere. Because El Nino peaks in the November-December timeframe, the impacts tend to be greater in the Northern Hemisphere. By "remote impacts", I mean areas that are far away from the El Nino-related warm waters of the central and eastern Pacific. However, since Peru is right next to those warm waters, it can receive a direct effect of increased storms.