West of the Jabal an Nusayreyah, Syria has a Mediterranean influenced climate, characterized by long, hot and mostly dry summers and mild, wet winters. Yearly rainfall ranges from about 300 - 500 mm in the coastal area, from about 200 mm further inland around Damascus, and from 127 mm to less than 25 mm in the desert area in the southeast. Regional variations in temperature are comparatively slight, due to the relatively small size of the country.
At Aleppo, in the northwest, the average August temperature is about 30&debg;C and the average January temperature is 4°C. At Tudmur, in the central region at the edge of the Syrian Desert, the corresponding temperatures are slightly higher; 31°C in summer and 7°C in the winter months. The differences between day temperatures and night temperatures can be quite significant, especially in the dryer inland areas, where the nights can be surprisingly cool.
Syria is divided in three different climate Zones. The climate of the coastal areas can be classified as Csa climate, a mild Mediterranean climate with a dry summer and the warmest month above 22°C and the coldest month between 18°C and -3°C. The climate further inland can be classified as BSh climate, a hot, dry Climate with the annual average Teperature above 18°C. The regions in eastern Syria have a >b>Bwh Climate; a hot Desert climate with the annual average Temperature above 18°C.