About 80% of the country is mountainous. The Great Caucasus mountain range protects Georgia from cold north winds. Its Ice-clad flanks supply many rivers and streams.
In the relatively small territory of Georgia, a great variety of regional and local climates exist, humid subtropical climate, permanent snow, and glaciers and dry subcontinental climate in southern Georgia.
The climate in eastern Georgia is dry and continental, with hot summers and mild winters, in the east of Georgia the humidity and precipitation are low and so is cloudiness. The temperature variations are considerable. Western Georgia situated on the eastern coast of the Black Sea and surrounded by the mountains has a humid subtropical climate with a small difference in temperatures, with high precipitation and high humidity. Warm, moist air from the Black Sea moves effortlessly into the coastal lowlands from the west.