Summer humidity is low in the Meseta Central and in the Ebro Basin, except right along the shores of in the Rio Ebro where humidity is high.

The least humid parts of Spain are found in the Inland Meseta (Central Plateau), particularly in the region of Madrid and Castilla-La Mancha. Because these areas are far from the Mediterranean and Atlantic coasts and are shielded by mountain ranges, they experience a continental climate with very dry air. In 2026, cities like Madrid, Toledo, and Ciudad Real are ideal for travelers who struggle with humidity, as summer humidity levels here can drop below 20%. Another dry hotspot is the Tabernas Desert in Almeria, the only true desert in Europe, which sees extremely low rainfall and consistent dry heat. While the coastal "Costa del Sol" is famous for sun, it remains relatively humid due to sea breezes; therefore, those seeking "bone-dry" air should head to the high-altitude plains of the Spanish interior.