The climate in the city can be categorized as mild: with gentle winters and hot, breezy, almost rain- free summer months, especially during July, August and September.The rainiest days tend to be April, May and June. The mean maximum daily temperatures in May, June, July, August and September are: 25.3°C, 27.4°C, 30.2°C,
30.0°C and 26.4°C respectively. However, the summer season is quite long and lasts from May until the end of September and enjoys the good summer weather. Although it can get fairly hot, the summer breeze keeps this region cooler than others in the country.
      The coldest month of the year on average is January with mean daily temperatures of 5.9 °C and although temperatures sometimes drop below zero and snow does fall, especially in the Strandja Mountian, it rarely piles up and lasts long in this region of the country.
Overall, the rare combination of mountain, plains, sea and rivers produces a particularly beneficial blend of clean, crisp air which is known to be beneficial to people with respiratory ailments.