Tbilisi has a humid continental climate, classified as Dfb in the Köppen system. The warmest month is August with an average high of 30°C, while the coldest month is January with lows dropping to -4°C. The annual temperature range of 34°C is typical of continental climates with distinct seasons.
The driest month is December with only 6 rain days and 29mm of precipitation. For travellers, December through to the following month typically offers the best balance of warm temperatures and dry conditions. Average humidity ranges from 65% to 65% throughout the year.
Best Time to Visit Tbilisi
Based on temperature and rainfall data, the best months to visit Tbilisi are September, April, May. These months offer the most comfortable temperatures with relatively low rainfall, ideal for sightseeing and outdoor activities.
In August, Tbilisi experiences average highs of 30°C (86°F) and lows of 19°C (66°F). Expect around 7 rainy days and 11 hours of sunshine per day, with humidity averaging 65%. The 11°C gap between daytime and overnight temperatures is worth planning around: light layers work for most visitors during the day, but an overshirt or cardigan handles the cooler evenings. UV index averages 9, so sun protection is advisable on clear days.
Tbilisi typically sees 7 rainy days in August, with total precipitation of around 47mm. This makes August one of the drier months of the year, and a reliable window for outdoor sightseeing and day trips. Rain showers tend to be brief when they do occur. For context, the driest month in Tbilisi typically sees 4-6 fewer rain days than August.
Pack lightweight, breathable clothing (linen or cotton), a wide-brim sun hat, SPF 50+ sunscreen, and a refillable water bottle for Tbilisi in August. The 30°C daytime heat demands sun protection during midday hours, typically 11am to 4pm. Rain is unlikely with only 7 wet days, so leave the umbrella at home and use the bag space for sunscreen. Quick-dry synthetic fabrics are preferable to cotton in 65% humidity.
Yes, August is an excellent time to visit Tbilisi. With 11 daily sunshine hours and only 7 rainy days, conditions are ideal for sightseeing and outdoor activities. Temperatures averaging 30°C during the day are comfortable for long walks and outdoor dining. This is peak travel season, so booking accommodation in advance and arriving at popular attractions early in the morning helps avoid the busiest periods.
The average high temperature in Tbilisi in August is 30°C (86°F), and the average low is 19°C (66°F). The mean daily temperature is approximately 25°C (76°F). The day-to-night range of 11°C is moderate, meaning a single light jacket covers most situations. These are 30-year climate normals based on the 1991 to 2020 reference period; individual years will vary, particularly in transitional months like spring and autumn.
The best month to visit Tbilisi is generally June. June offers the most sunshine at 12 hours per day and only 11 rainy days. Average temperatures reach 26°C, making it comfortable for sightseeing, outdoor dining, and exploring the city. If your travel dates are flexible, planning your trip around June gives you the best chance of dry, bright weather.
August is shoulder or low season in Tbilisi, meaning fewer tourists and generally lower prices than peak months. With 11 sunshine hours and 7 rainy days, the weather is less of a draw for mass tourism. This is an advantage for travellers who prefer a quieter, more relaxed experience with shorter queues and easier accommodation availability.
In August, Tbilisi suits a range of activities thanks to warm temperatures of 30°C. With few rainy days, outdoor activities are highly recommended. Top options include exploring historic neighbourhoods, visiting museums and galleries, local food markets, and day trips to surrounding areas. With 11 hours of sunshine, parks and waterfront walks are particularly enjoyable.