Tbilisi experiences a humid subtropical climate with hot summers, mild winters, and distinct seasonal transitions that demand wardrobe versatility.

Rainfall peaks in May and October, meaning spring and autumn require waterproof layers more than the relatively dry summer and winter months.

Summer temperatures regularly exceed 30°C while winter occasionally dips below freezing, though snow is infrequent and rarely lingers in the city proper.

The Mtkvari River valley traps humidity during summer months, making the heat feel more oppressive than the thermometer suggests.

Tbilisi's microclimates between the old town's narrow streets and exposed hilltop neighborhoods mean layering matters even within a single afternoon.