With its coastline facing the Adriatic and Ionian seas, its highlands backed upon the elevated Balkan landmass, and the entire country lying at a latitude subject to a variety of weather patterns during the winter and summer seasons, Albania has a high number of climatic regions for so small an area. The coastal lowlands have typically Mediterranean weather; the highlands have a Mediterranean continental climate. In both the lowlands and the interior, the weather varies markedly from north to south.

The lowlands have mild winters, averaging about 7° C. Summer temperatures average 24° C, humidity is high, and the weather tends to be oppressively uncomfortable. In the southern lowlands, temperatures average about five degrees higher throughout the year. The difference is greater than five degrees during the summer and somewhat less during the winter.

Inland temperatures are affected more by differences in elevation than by latitude or any other factor. Low winter temperatures in the mountains are caused by the continental air mass that dominates the weather in Eastern Europe and the Balkans. Northerly and northeasterly winds blow much of the time. Average summer temperatures are lower than in the coastal areas and much lower at higher elevations, but daily fluctuations are greater. Daytime maximum temperatures in the interior basins and river valleys are very high, but the nights are almost always cool.

Average precipitation is heavy, a result of the convergence of the prevailing airflow from the Mediterranean Sea and the continental air mass. Because they usually meet at the point where the terrain rises, the heaviest rain falls in the central uplands. Vertical currents initiated when the Mediterranean air is uplifted also cause frequent thunderstorms. Many of these storms are accompanied by high local winds and torrential downpours.

When the continental air mass is weak, Mediterranean winds drop their moisture farther inland. When there is a dominant continental air mass, cold air spills onto the lowland areas, which occurs most frequently in the winter. Because the season's lower temperatures damage olive trees and citrus fruits, groves and orchards are restricted to sheltered places with southern and western exposures, even in areas with high average winter temperatures.

Lowland rainfall averages from 1,000 millimeters to more than 1,500 millimeters annually, with the higher levels in the north. Nearly 95 percent of the rain falls in the winter.

Rainfall in the upland mountain ranges is heavier. Adequate records are not available, and estimates vary widely, but annual averages are probably about 1,800 millimeters and are as high as 2,550 millimeters in some northern areas. The seasonal variation is not quite as great in the coastal area.

The higher inland mountains receive less precipitation then the intermediate uplands. Terrain differences cause wide local variations, but the seasonal distribution is the most consistent of any area.

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Source: U.S. Library of Congress