Mean annual precipitation is 510 mm in the city centre, only 450 mm in Digomi Valley, and 525 mm in Ortachala. Another maximum is usually in September, when monthly amounts of average precipitation are almost half of May levels. Distribution of cloudy days does not coincide with maximum precipitation periods. It more depends on orographical circumstances and common circulation processes. The general wind direction in East Georgia is from west to east, although high mountains around the city and other topographic characteristics sometimes changes them.
Southeast winds are less.
References Javakhishvili, Sh. Monthly Characteristic of Climate Types of Georgia. Climate of Georgia. Physical Geography of Georgia. Physical Geographical Division of Eastern Georgia.