Weather in Tbilisi in September 2025
Average weather
Average temperature in Tbilisi in September
Going from a maximum of +32°C during the day to a minimum of +8°C during the night, the temperature in September averages around +24°C.
The average maximum temperature goes down 37% by the end of the month, compared with the beginning of the month, from +30°C to +21°C.
Is Tbilisi warm or cold in September?
Tbilisi is typically warm in September.
Maximum temperatures go down compared to the previous month from +29°C to +24°C. The minimum temperature also goes down from +18°C to +14°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how September is compared to other months in Tbilisi:
Climate in Tbilisi in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +29°C | +24°C | +18°C | ||||
| Min. temperature | ||||||
| +10°C | +4°C | -2°C | ||||
| Max. temperature | ||||||
| +39°C | +36°C | +29°C | ||||
| Rainfall | ||||||
| 17 mm | 25 mm | 47 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 2 m/s | ||||
| Humidity | ||||||
| 55% | 62% | 71% | ||||
| Air pressure | ||||||
| 1012 HPa | 1016 HPa | 1020 HPa | ||||
| Sunny days | ||||||
| 10 | 9 | 8 | ||||
| Cloudy days | ||||||
| 9 | 9 | 9 | ||||
| Rainy days | ||||||
| 8 | 10 | 13 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September typically has worse weather conditions compared to August. It’s getting colder in September. From +29°C in the day, the average maximum temperature lowers to +24°C. Prepare for more rain. Average rainfall goes from 17 mm to 25 mm. Humidity rises from 55% to 62%. The average wind speed doesn’t change much during September, staying around 3 m/s. The days becoming less sunny, going from 10 sunny days in August to 9 in September.
October brings much the same weather, it remains good.
Wind
The average wind speed is 2 m/s getting up to 10 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Tbilisi is gradually increasing during September, going from 1 m/s to 1 m/s over the course of the month.
Rain
How was the weather last September in Tbilisi?
Climate Change over Years
The climate in Tbilisi in September has not changed much over the last 43 years.
The average temperature was the lowest in 1993 (+14°C) and the highest in 2019 (+19°C). The driest year was 1997 with only 232 mm of rainfall, and the wettest year was 2023 with 689 mm.
FAQ
Is September a good time to visit Tbilisi?
Can you sunbathe in Tbilisi in September?
Is Tbilisi rainy in September?
Is it sunny in Tbilisi in September?
Other cities in Georgia
Monthly weather in Tbilisi
Source of the data
For this page, we’ve looked at the typical weather in Tbilisi, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.