Temperature in Sliven in September
Sliven is a region in Bulgaria. In September the average maximum daytime temperatures are high and range from 24°C in Kotel to 26°C in Nova Zagora. Nighttime temperatures generally drop to 14°C in Nova Zagora and 13°C in Kotel.
What is the temperature of the different cities in Sliven in September?
Explore the map below to discover average September temperatures at the top destinations in Sliven. For a deeper dive, simply click on any destination dot.
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For a detailed overview over the year and the best time to visit Bulgaria, check out our Sliven's climate page.
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