The average annual temperature in Tbilisi is . January is the coldest month with an average temperature of . July is the hottest month with an average temperature of . Daytime high temperatures reach or exceed  on an average of 22 days during a typical year.  The absolute minimum recorded temperature is  in January 1883 and the absolute maximum is  on 17 July 1882. Average annual precipitation is . May is the wettest month (averaging  of precipitation) while January is the driest (averaging  of precipitation). Snow falls on average 15–25 days per year. The surrounding mountains often trap the clouds within and around the city, mainly during the Spring and Autumn months, resulting in prolonged rainy and/or cloudy weather. Northwesterly winds dominate in most parts of Tbilisi throughout the year. Southeasterly winds are common as well.