Tbilisi: Encyclopedia II - Tbilisi - Geography

Tbilisi - Geography

Tbilisi is located in Eastern Georgia within the Tbilisi Depression along both banks of the Kura (Mtkvari) River. The elevation of the city ranges from 380-600 meters above sea level (1246-1968 feet). To the north, Tbilisi is bounded by the Saguramo Range, to the east and south-east by the Iori Plain, to the south and west by various endings (sub-ranges) of the Trialeti Range.

The relief of Tbilisi is quite complex. The part of the city which lies on the left bank of the Mtkvari (Kura) River extends for more than 30km (19 miles) from the Avchala District to River Lochini. The part of the city which lies on the right side of the Mtkvari River on the other hand is built along the foothills of the Trialeti Range, the slopes of which in many cases descend all the way to the edges of the river Mtkvari. The mountains, therefore, are a significant barrier to urban development on the right bank of the Mtkvari River. This type of a geographic environment creates pockets of very densely developed areas while other parts of the city are left undeveloped due to the complex topographic relief.

North of the city is a large reservoir (commonly known as the Tbilisi Sea) fed by irrigation canals.

Tbilisi - Climate

The climate of Tbilisi is transitional from humid subtropical to relatively mild continental. The climate of the city is influenced both by dry (Central Asian/Siberian) air masses from the east and humid subtropical (Atlantic/Black Sea) air masses from the west. Tbilisi experiences relatively cold winters and hot summers. Due to the fact that Tbilisi is bounded on most sides by mountain ranges, the close proximity to large bodies of water (Black and Caspian Seas) and the fact that the Greater Caucasus Mountain Range (further to the north) blocks the intrusion of cold air masses from Russia, Tbilisi has a relatively mild micro-climate compared to other cities that possess a similar continental climate along the same latitudes (i.e. Chicago or Pittsburgh).

Average annual temperature in Tbilisi is 12.7 degrees Celsius. January is the coldest month with an average temperature of 0.9 degrees Celsius. July is the hottest month with an average temperature of 24.4 degrees Celsius. The absolute minimum recorded temperature is -23 degrees Celsius and the absolute maximum is 40 degrees Celsius. Average annual precipitation is 568mm (22.4 inches). May is the wettest month (90mm) while January is the driest (20mm). Snow may fall on average for 15-25 days per year. The surrounding mountains often trap the clouds within and around the city mainly during the Spring and Autumn months, resulting in prolonged rainy and/or cloudy weather. Northwesterly winds dominate in most parts of Tbilisi throughout the year. Southeasterly winds are common as well.

Adapted from the Wikipedia article "Geography", under the G.N U Free Docmentation License. Please also see http://en.wikipedia.org/wiki