Georgia's crossroads capital — sulfur baths, wine bars, and 1,500 years of history.
May–June and September–October are Tbilisi's sweet spots: 20–26°C days, 15°C evenings, outdoor terrace weather, and long light until 21:00. July–August routinely hits 35°C+ with humid smog trapped in the river valley — locals leave for Kazbegi or Bakuriani.
November through March is atmospheric rather than pretty: cafés and wine bars in full swing, mountain views on clear days, occasional dusting of snow, and hotel rates 30–40% lower. December in Tbilisi is genuinely lovely if you don't mind bundling up.