The plains of eastern Georgia are shielded from the influence of the Black Sea by mountains of Likhi that provide a more continental climate. 2-4C. Humidity is lower. Alpine and highland regions in the east and west, as well as semiarid region on the Iori Plateau to the southeast have distinct microclimates. In general, the best time to visit is from mid April through October, when days are warm or hot. Tbilisi can be very hot in July and August.
Evenings tend to be cool, even in the summer.
The western part of Georgia, near the Black Sea, has a more moderate climate. No matter when you go, be sure to take along a sweater for the cool evenings.