These orographic characteristics have a marked effect on the region’s climate: a mixed climate of Atlantic influence, but with a strong Mediterranean character, influenced by the proximity to the sea and the Tejo and Sado rivers, and also to the Arrábida Mountain. Thus, the summer is hot and dry, alternating with a relatively cold and rainy winter. Next to Arrábida, a clay-limestone soil and a mild climate predominates, ideal for higher quality generous wines, such as the Moscatel de Setúbal and Moscatel Roxo de Setúbal (D.O. Setúbal). The production of high quality white wines also benefits from this climate. In the plains, the soils are fundamentally sandy and the thermal amplitudes are greater. In the western coast, which extends to the northeast and southeast of Arrábida, it is where we can find the best conditions for the production of full-bodied red wines, and the place of choice for the Castelão (Periquita) variety. To the south of the Troia Peninsula, the climate is warmer and drier, although refreshed by the Atlantic. Here, the wines are marked by an intense sun exposure, but balanced by the nighttime temperatures and the freshness from the sea. The vineyards closest to the interior, in the southwest, produce wines with superior alcohol content and concentration.