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Weather and seasons

Temperatures month by month, the rainy and hot seasons, and air quality in winter.

Checked 21 Oct 2026. Rules change, so open the source before you act.

Tbilisi month by month

Average daily high and low in °C.

Source: Wikipedia.

  • Normals are 1991 to 2020. Temperatures come from Pogoda.ru.net and precipitation from NOAA, as cited in the Wikipedia table. rain_days means days with at least 1 mm.
  • We did not find a table that cites the Georgian National Environmental Agency directly.
  • Tbilisi is dry. It gets about 512 mm of rain a year. May and June are the wettest months (about 83 to 84 mm). January is the driest.
  • July and August are hot: the average high is about 31 to 32 C.
  • Winters are mild but grey. January averages 6.9 C by day and just under 0 C at night. Sunshine is lowest in December and January (about 93 to 99 hours a month).
  • Batumi is very wet: about 2,519 mm a year and about 139 rain days. September to January are the wettest months, each with about 230 to 330 mm. Wikipedia calls Batumi the wettest city in Georgia and the Caucasus.
  • Kutaisi is in between: about 1,358 mm a year and about 120 rain days. Winters are milder than in Tbilisi (January high 9.7 C) and summers are a little cooler (August high 30.2 C).

Air quality

  • 20 ug/m3Tbilisi PM2.5 averages about 20 micrograms per cubic metre

    A 2023 World Bank paper gives an average monthly PM2.5 of 20 ug/m3 for Tbilisi. That is four times the WHO annual guideline of 5 ug/m3. Traffic and industry are named as the main drivers.

    Source: openknowledge.worldbank.org (2023).

  • Dec to Feb worstWinter and autumn are the worst seasons

    A satellite study by Arnika and Green Pole links winter and autumn particle peaks around Tbilisi and Rustavi to home heating. Spring and summer get dust blown in from the east. An expat guide puts winter PM2.5 at about 20 to 50 ug/m3 and summer at about 8 to 15 ug/m3 (not an official source).

    Sources: Arnika and Green Pole, Georgia Expats (2026-03).

  • AQI 66 on 2026-10-21Live readings vary day to day

    On 21 October 2026 at 17:00, IQAir showed Tbilisi at US AQI 66 (Moderate). PM2.5 was 17 ug/m3, the main pollutant, and 3.4 times the WHO annual guideline. This is one reading, not an average.

    Source: IQAir.

  • air.gov.geThe official source is the National Environmental Agency portal

    air.gov.ge shows hourly data from automatic stations, about 10 minutes behind real time. They measure PM2.5, PM10, NO2, O3, SO2 and CO. Automatic data is unverified; checked data is in the Reports section.

    Source: National Environmental Agency of Georgia.

  • Some spikes come from outside Georgia

    In February 2024, the NEA said a rise in PM10 and PM2.5 in Tbilisi and other regions came mainly from pollution from outside the country. It happens in certain weather conditions on certain days.

    Source: 1TV Georgia (2024-02-16).

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