Last updated: April 16th, 2025 at 2:11 pm · Est. Reading Time: < 1 minute
Along the coast of the Persian Gulf, extending up to the Najad highland, is a low-lying plain. This Hasa plain (الاحساء) that extends into the plain of Oman in the south and the plain of Iraq in the north.
Hasa plain has numerous salt pans called sabkhah (سبخه).
Climate
The Hasa coastal plain is dry. Thanks to the Persian Gulf, Hasa is cool. Daytime temperature during summer averages 32°c while winter temperature is around 16°c. It receives regular rainfall. Humidity on the coast is high, and it can receive surprisingly cool, humid breezes in summer.
Underground water comes near the surface in some arid places of the Arabian Peninsula. Sometimes this water starts running on the ground as a spring. Otherwise, it can be tapped by digging a well. These areas are called oases (wāḥtah واحۃ). Such groundwater is most abundant in the Hasa plain, producing the largest oases on the peninsula, named Hofuf (Hofūf الھفوف).
Further reading
Federico S. Vidal, The Oasis of al-Hasa. New York: Arabian American Oil Company, 1955