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Tbilisi, Georgia climate
Csa Hot-summer Mediterranean
Tbilisi has a seasonal mild-temperate climate (Hot-summer Mediterranean, Köppen Csa). The hottest month is August with an average daily high near 89°F, while the coldest is January averaging around 26°F at night. Precipitation totals about 21 inches a year and is strongly seasonal — June alone averages 4.3 inches while August barely receives 0.56 inches.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Tbilisi climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 45 | 47 | 56 | 66 | 75 | 84 | 89 | 89 | 80 | 69 | 56 | 47 |
| Avg temp (°F) | 36 | 37 | 45 | 54 | 63 | 72 | 77 | 77 | 69 | 58 | 46 | 38 |
| Avg low (°F) | 26 | 27 | 33 | 42 | 51 | 60 | 66 | 66 | 57 | 48 | 36 | 29 |
| Precipitation (in) | 1.0 | 0.7 | 1.2 | 3.0 | 2.6 | 4.3 | 0.9 | 0.6 | 1.9 | 1.5 | 1.1 | 2.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 45 | 47 | 56 | 66 | 75 | 84 |
| Avg temp (°F) | 36 | 37 | 45 | 54 | 63 | 72 |
| Avg low (°F) | 26 | 27 | 33 | 42 | 51 | 60 |
| Precipitation (in) | 1.0 | 0.7 | 1.2 | 3.0 | 2.6 | 4.3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 89 | 89 | 80 | 69 | 56 | 47 |
| Avg temp (°F) | 77 | 77 | 69 | 58 | 46 | 38 |
| Avg low (°F) | 66 | 66 | 57 | 48 | 36 | 29 |
| Precipitation (in) | 0.9 | 0.6 | 1.9 | 1.5 | 1.1 | 2.0 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 2 | 2 | 2 | 4 | 4 | 3 | 2 | 2 | 2 | 2 | 2 | 2 |
| Days with high ≥ 90°F (days) | — | — | — | 0.1 | 0.5 | 6 | 13 | 14 | 3 | 0.0 | — | — |
| Days with low ≤ 32°F (days) | 5 | 4 | 2 | 0.2 | — | — | — | — | — | — | 1 | 3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 2 | 2 | 2 | 4 | 4 | 3 |
| Days with high ≥ 90°F (days) | — | — | — | 0.1 | 0.5 | 6 |
| Days with low ≤ 32°F (days) | 5 | 4 | 2 | 0.2 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 2 | 2 | 2 | 2 | 2 | 2 |
| Days with high ≥ 90°F (days) | 13 | 14 | 3 | 0.0 | — | — |
| Days with low ≤ 32°F (days) | — | — | — | — | 1 | 3 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 64 | 67 | 70 | 71 | 69 | 62 | 58 | 57 | 58 | 61 | 61 | 63 |
| Relative humidity (%) | 69 | 67 | 62 | 60 | 58 | 53 | 47 | 47 | 56 | 66 | 71 | 73 |
| Wind speed (mph) | 3.8 | 4.6 | 5.0 | 4.5 | 4.1 | 4.4 | 4.4 | 4.3 | 4.1 | 3.5 | 3.3 | 3.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 64 | 67 | 70 | 71 | 69 | 62 |
| Relative humidity (%) | 69 | 67 | 62 | 60 | 58 | 53 |
| Wind speed (mph) | 3.8 | 4.6 | 5.0 | 4.5 | 4.1 | 4.4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 58 | 57 | 58 | 61 | 61 | 63 |
| Relative humidity (%) | 47 | 47 | 56 | 66 | 71 | 73 |
| Wind speed (mph) | 4.4 | 4.3 | 4.1 | 3.5 | 3.3 | 3.3 |
Methodology & sources
Temperature — modelled for this location from ERA5-Land reanalysis, a ~9 km global grid, because no long-record weather station is close enough to use.
Precipitation — 1991–2020 normals computed from 2 years of daily observations at Tbilisi, a weather station, about 10 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.