Tbilisi and the Southeast: Rain You Can Walk Out Of
Tbilisi is a dry city by regional standards. May and June carry the most rain, usually as short afternoon thunderstorms that clear within an hour, while July and August often deliver whole weeks without a drop. Winter is grey rather than wet: drizzle, occasional snow, temperatures hovering near freezing in January. That pattern makes the capital the easiest place in Georgia to absorb bad weather, because the old town is compact and almost everything worth seeing sits within a fifteen-minute walk of Freedom Square or the Avlabari metro stop.
When the sky opens, head indoors and stay there. The sulphur baths in Abanotubani are open year-round and cost far less than a spa in Europe; the National Museum on Rustaveli has the gold treasury and the Soviet occupation hall, easily three hours. The Dry Bridge antiques market runs daily but packs up in heavy rain. For a wet Sunday, the covered Deserter Market near the station is a genuine experience. I would book a hotel in Sololaki or the old town for a rain-prone week, not the outer suburbs, so you can retreat without a taxi.
Batumi and the Black Sea Coast: Plan Around the Downpour
The Adjaran coast is the wettest corner of Georgia, and it is not close. Batumi averages well over 2,000mm of rain a year, with the heaviest falls between October and March; the city's nickname, the Las Vegas of the Black Sea, hides the fact that November can bring a solid week of downpour. Summer is drier but not dry. From June to September you get warm sea, long evenings on the boulevard, and rain that arrives as dramatic overnight storms. If you want a beach holiday with weather insurance, aim for late June through August and accept one or two washed-out days.
Build indoor plans before you arrive. The Batumi Archaeological Museum and the Adjara Museum of Art are both solid two-hour stops, and the aquarium on the waterfront is purpose-built for rainy afternoons. The covered market near Chavchavadze Street is worth an hour for Adjarian cheeses and spice stalls. Skip the cable car in poor visibility, since the point of the ride is the panorama. Between October and April I would not book a coastal hotel for a short break without checking the forecast; instead base in Tbilisi, where most of the top-demand bookings in our data cluster, and take the coast as a two-day trip by train.
Kazbegi and Svaneti: When Rain Becomes a Route Problem
In the Greater Caucasus the wet-weather question is not comfort but access. The Georgian Military Highway to Kazbegi climbs through the Dariali gorge and can be slowed by rockfall or fog at any time of year; the road is usually clear from May to October. Svaneti, reached by a long drive from Zugdidi or a short flight to Mestia when the airstrip is open, gets heavy snow rather than rain from November to April. Late spring and early autumn are the sweet spots: July and August are busiest, September is quieter and often clearer, and October brings early snow on the passes.
Treat a bad-weather day here as a reason to sit still. In Mestia the Svaneti Museum of History and Ethnography holds icons and manuscripts that justify a morning, and the tower houses themselves are the attraction. In Kazbegi, the Rooms Hotel terrace is a fine place to wait out cloud, and the Gergeti Trinity walk should be skipped in fog. I would build one buffer day into any mountain itinerary and book a hotel with a working fireplace and a kitchen, because mountain roads close early and you may not want to go out for dinner.
Kakheti and the Lowlands: The Safest Bet in a Wet Week
Kakheti, the wine region east of Tbilisi, is one of the driest parts of Georgia, with Signagi and Telavi receiving modest annual rainfall and the wettest months falling in late spring. That makes it the region I would choose for a trip booked weeks in advance with no weather flexibility. The Alazani valley is a two-hour drive from the capital; marshrutkas run from Samgori station, but a hired car with a driver is worth it for winery visits. Rain here rarely lasts, and the vineyards and monasteries stay open.
Indoor options carry the day: almost every winery in the region offers a cellar tour and tasting under cover, and the tunnels at Khareba near Kvareli are a rain-proof walk whatever the sky is doing. Telavi's old town and the Gremi citadel are short visits between showers. For hotels, Signagi has the densest cluster of small guesthouses with views, and Telavi is better for reaching estates. A wet day in Kakheti is a long lunch with a qvevri tasting; a wet day on the coast is a cancelled plan.