Two types of air masses and atmospheric motion penetrate into Baku: tropical air masses and air masses of Central Asia. Tropical air masses mainly permeate from the South in summer and cause hot and dry weather, and promote rise in air temperature during cold period of the year. And air masses of Central Asia penetrate from the East through the Caspian Sea. These air masses raise the temperature in summer and reduce in winter and often form east and south-east winds. At the same time the weather is stably less cloudy and dry.
Prevailing winds are north and north-east winds, called “Khazri” in public. Sometimes their speed reaches 35-40 m/sec that causes serious damage to national economy. Enough frequent strong winds “Khazri” make weather unstable, embarrassing work of seamen, oilmen, fishermen. On hot summer days “Khazri” reduces the temperature of air and brings cool.
“Gilavar” winds, penetrating from south and south-east promote softening of weather in winter, and cause more heat in summer. Khazri and Gilavar play important role in purification of air from industrial pollution in Baku.
On the coast of the Caspian Sea coastal winds (night and daytime breezes) blow.