Peru's National Weather and Climate Service, Senamhi, expects rainfall to increase along the country's northern and central coast. Agency chief Grinia Ávalos linked the rise to the extraordinary conditions associated with El Niño. She described the current coastal rains as part of a progressive advance of the rainy season. Rainfall is expected to peak between December and March. The statement gives a broad seasonal window but does not provide rainfall totals for individual locations. The warning centers on the timing of the wetter period rather than a precise daily forecast for each part of the coast.