Spring — March to May
Spring is one of the two best times to visit Tbilisi. The city sits in a bowl surrounded by hills, and its climate is a transitional mix of continental and subtropical influences carried up from the Black Sea — which means spring arrives earlier and more gently here than in most of the Caucasus. March is still cool and unpredictable (7–14°C, with cold snaps and occasional rain), but by April the city is genuinely blooming: 13–20°C, blossom along Rustaveli Avenue and in the parks, and the old town's balconies draped in new greenery. May pushes into warm territory (18–25°C) with long, comfortable days.
This is when Tbilisi feels most alive without being overwhelmed by visitors — restaurant terraces reopen, the sulphur baths are pleasant rather than essential, and walking the old town's hilly lanes is comfortable rather than punishing.
Key events: the New Wine Festival in May brings natural wine producers from across Georgia's regions into the city for tastings — one of the best low-key food-and-drink events in the country. Easter (dates vary, following the Orthodox calendar) is marked with services at Sioni Cathedral and Holy Trinity Cathedral and a noticeably festive mood in the old town.
What to pack: layers for March, lighter clothing by late April. A light jacket for cool evenings even in May, since Tbilisi's elevation (around 490m) keeps nights cooler than the daytime temperatures suggest. Comfortable shoes — the old town and fortress paths are steep and cobbled.
Summer — June to August
Summer in Tbilisi is hot and dry, more Mediterranean in character than the rest of the Caucasus. June is warm and still bearable (24–30°C), while July and August are the peak of the heat, regularly hitting 32–37°C with little rainfall and strong sun. Humidity is generally lower than in Central Europe, which makes the heat more tolerable, but afternoons in the old town's stone lanes can still feel punishing.
The city adapts: locals shift life to the evenings, when rooftop bars and terraces around Fabrika and the old town fill up as the temperature drops into the low-to-mid 20s°C. The sulphur baths remain a year-round pleasure regardless of the heat outside. Many Tbilisi residents leave the city for the mountains (Kazbegi, Bakuriani) or the Black Sea coast (Batumi) during the hottest weeks of July and August, which can make the city feel slightly quieter even as tourist numbers rise.
Key events: Tbilisi Open Air (June) is Georgia's biggest music festival, drawing international and regional acts to an outdoor site near the city. Art Gene Festival (July) celebrates Georgian folk music, crafts, and traditional culture with performances across multiple old town venues. Wine bars run extended evening hours to catch the after-dark crowds.
What to pack: light breathable clothing, sunscreen, a hat, and sunglasses. A light layer for air-conditioned interiors and for the cooler evening breeze once the sun drops. Good walking shoes despite the heat — the fortress climb and old town stairs don't get easier because it's summer.
Autumn — September to November
Autumn is the other peak season and, for many visitors, the most rewarding time to be in Tbilisi. September holds onto summer warmth (22–28°C) while the light turns gentler and the crowds thin. October is the sweet spot — 15–22°C, clear skies, and the grape harvest in full swing across the country. November brings a sharper drop (7–14°C) with more frequent rain, signalling the approach of winter.
This is harvest season, and it matters enormously here: Georgia's wine culture, built on 8,000 years of qvevri fermentation, peaks in September and October as the new vintage comes in. Kakheti, the wine region two hours east of Tbilisi, is worth visiting specifically for this — but even in the city, wine bars fill with new-vintage tastings and the atmosphere turns celebratory.
Key events: Rtveli, the grape harvest festival, runs through September and October across Kakheti's wine villages, with open cellars, music, and communal feasting — day trips from Tbilisi during this window are especially worthwhile. Tbilisoba, the city's autumn festival held in early-to-mid October, fills the old town and Rike Park with folk performances, craft stalls, and food for an entire weekend — it's the single best event to plan a visit around. Tbilisi International Film Festival runs in November for those staying into the colder month.
What to pack: layers for the temperature swing between September and November. A medium-weight jacket becomes necessary by late October. An umbrella for November's more frequent rain.
Winter — December to February
Winter in Tbilisi is mild by Caucasus standards — the city's low elevation and position in the Mtkvari valley shelter it from the harshest continental cold that grips the high mountains just a few hours' drive north. Daytime temperatures typically sit between 2–9°C, with nights dropping close to or just below freezing. Snow falls occasionally but rarely settles for long in the city centre, though the mountains around Kazbegi and Gudauri turn into a serious ski destination during these same months.
Grey, overcast days are common, and December in particular can feel damp. But winter is when the sulphur baths make the most sense — soaking in 40°C natural spring water while the air outside sits near freezing is one of Tbilisi's best cold-weather experiences, and Abanotubani is far less crowded than in peak season.
Low season brings real advantages: cheaper accommodation, empty museums, and a more local, unhurried old town. The city doesn't put on the same scale of Christmas market seen in Central Europe, but Rustaveli Avenue and Freedom Square are decorated, and Orthodox Christmas (7 January, following the Julian calendar) and New Year are celebrated with real intensity — fireworks, family gatherings, and church services at Holy Trinity Cathedral that draw large crowds.
What to pack: a warm coat, hat, and gloves for December and January especially. Waterproof shoes for wet cobblestones. Layers, since indoor spaces are generally well-heated and the temperature swing between outside and in can be significant.