Why does Valencia have more precipitation in winter than in summer? Why is there a tropical desert climate around West Asia?

Spain is located on the Mediterranean coast, and its latitude is about 30-40 degrees north latitude. In summer, the direct point of the sun moves northward, controlled by the subtropical high, and the downward flow prevails, and the weather is hot and dry. In winter, the direct point of the sun moves south, which is controlled by the prevailing westerly belt. The wind blows from the ocean to the land, which is warm and humid, increasing the precipitation in this area.

West Asia has always been controlled by subtropical high, and the weather is sunny and dry, so it has a tropical desert climate.