September weather forecast and climate
Tbilisi, Georgia

Narikala castle seen on the slope of the mountain in Tbilisi, Georgia
Narikala castle seen on the slope of the mountain in Tbilisi, Georgia
The first month of the autumn, September, is still a warm month in Tbilisi, Georgia, with temperature in the range of an average high of 23.7°C (74.7°F) and an average low of 12.9°C (55.2°F).

Temperature

In Tbilisi, the average high-temperature in September decreases, from 29.1°C (84.4°F) in August, to a still warm 23.7°C (74.7°F). In September, in Tbilisi, Georgia, the average low-temperature is 12.9°C (55.2°F).

Humidity

The average relative humidity is 63%.

Rainfall

In Tbilisi, during September, the rain falls for 11.4 days and regularly aggregates up to 29mm (1.14") of precipitation. In Tbilisi, during the entire year, the rain falls for 136.8 days and collects up to 360mm (14.17") of precipitation.

Snowfall

In Tbilisi snow does not fall in May through September.

Daylight

The average length of the day in September is 12.5h.

Sunshine

The average sunshine in Tbilisi is 9.2h.

UV index

In September, the average daily maximum UV index in Tbilisi is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from the exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 4 interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in September in Tbilisi?

The average high-temperature, in September, is 23.7°C (74.7°F), while the average low-temperature is 12.9°C (55.2°F).

What is the average humidity in September in Tbilisi?

The average relative humidity in September in Tbilisi, Georgia, is 63%.

How many days does it rain in September in Tbilisi?

In September, in Tbilisi, the rain falls for 11.4 days. Throughout September, 29mm (1.14") of precipitation is accumulated.

Does it snow in Tbilisi in September?

In Tbilisi, in September, it doesn't snow. In October, it regularly snows.

When it does not snow in Tbilisi?

In Tbilisi snow does not fall in May through September.

What is the average length of the day in September in Tbilisi?

In September, the average length of the day in Tbilisi is 12.5h.

How many hours of sunshine does Tbilisi have in September?

In September, the average sunshine in Tbilisi is 9.2h.

What is the UV index intensity in September in Tbilisi?

In Tbilisi, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in September - Tbilisi, Georgia
  • Average high temperature in September: 23.7°C

The warmest month (with the highest average high temperature) is July (29.9°C).
The month with the lowest average high temperature is January (4.2°C).

  • Average low temperature in September: 12.9°C

The month with the highest average low temperature is July (17.6°C).
The coldest month (with the lowest average low temperature) is January (-2.4°C).

Average pressure in September - Tbilisi, Georgia
  • Average pressure in September: 1016.1mbar

The month with the highest atmospheric pressure is December (1022.4mbar).
The month with the lowest atmospheric pressure is July (1011.9mbar).

Average wind speed in September - Tbilisi, Georgia
  • Average wind speed in September: 7km/h

The windiest month (with the highest average wind speed) is March (9.1km/h).
The calmest month (with the lowest average wind speed) is November (6.5km/h).

Average humidity in September - Tbilisi, Georgia
  • Average humidity in September: 63%

Months with the highest relative humidity are January and February (71%).
The month with the lowest relative humidity is August (52%).

Average rainfall in September - Tbilisi, Georgia
  • Average rainfall in September: 29mm

The wettest month (with the highest rainfall) is May (70mm).
The driest months (with the least rainfall) are January, February and December (13mm).

Average rainfall days in September - Tbilisi, Georgia
  • Average rainfall days in September: 11.4 days

The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is January (5.3 days).

Average snowfall in September - Tbilisi, Georgia
  • Average snowfall in September: 0mm

The month with the highest snowfall is March (72mm).
Months with the least snowfall are May, June, July, August and September (0mm).

Average snowfall days in September - Tbilisi, Georgia
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (6.6 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in September / Average sunshine in September - Tbilisi, Georgia
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in September: 9.2h

The month with the most sunshine is June (Average sunshine: 11.7h).
The month with the least sunshine is November (Average sunshine: 6.4h).

Average sunshine days in September - Tbilisi, Georgia
  • Average sunshine days in September: 14.6 days

The month with the most sunshine days is December (22.6 days).
The month with the least sunshine days is May (9.3 days).

Average UV index in September - Tbilisi, Georgia
  • Average UV index in September: 4

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in September - Tbilisi, Georgia
  • Average cloud cover in September: 25

Months with the most cloud cover are February and March (Cloud cover 36).
The month with the least cloud cover is August (Cloud cover 19).

Average visibility in September - Tbilisi, Georgia
  • Average visibility in September: 10km

Months with the highest visibility are June, July, August, September and December (10km).
Months with the lowest visibility are January, February, March, April, May, October and November (9km).