 This is because the Sierra Nevada mountain range that serves as a backdrop to the Costa Tropical catches more rain and thus supplies the area with abundant irrigation.This same mountain backdrop provides a shelter from northerlies and creates a pleasant microclimate of very mild winters and mild summers compared to the interior of Spain, with temperature differences of relative to the area on the other side of the mountains – so it could be on a summer day in the city of Granada and only on the Costa Tropical.In the winter, it can be snowing in Granada and on the Costa Tropical.