Tbilisi weather in September
September in Tbilisi: warm, a little rain, with clean air — one of the best months to visit.
#2 of 12 months in Tbilisi · #80 of 604 destinations to visit in September · comfort 90/100 (tier S)
Updated June 2026 · climate normals from ERA5 reanalysis
Tbilisi climate normals — September
| Daytime high | 25°C / 77°F | 🌤 warm |
|---|---|---|
| Nighttime low | 15°C / 58°F | |
| Feels like (high) | 25°C / 77°F | |
| Rainfall | 51 mm / 2 in | 🌦 some rain |
| Rainy days | 10 days | |
| Humidity | 64% | 💧 humid |
| Dew point | 12°C / 54°F | |
| Sunshine | 9.2 h/day | |
| Daylight | 12.5 h | |
| Wind | 12 km/h / 7 mph | |
| Air quality (US AQI) | 49 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Tbilisi in September — FAQ
- Is September a good time to visit Tbilisi?
- September in Tbilisi: warm, a little rain, with clean air — one of the best months to visit. It ranks #2 of 12 months for Tbilisi on SeasonMap's comfort score (90/100).
- What is the weather like in Tbilisi in September?
- In September, Tbilisi averages a daily high of 25°C and a low of 14.6°C, with about 50.5 mm of rain over roughly 9.8 rainy days.
- What is the air quality in Tbilisi in September?
- Tbilisi has a mean US Air Quality Index of about 49 in September.