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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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Legend very warm warm pleasant moderate cold very cold
Very warm means maximum temperatures above 30°C. Warm: 22°C to 30°C. Pleasant: 18°C to 22°C Moderate: 12°C to 18°C. Cold: 2°C to 12°C. Very cold: lower than 2°C

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Check the conditions for any month of the year.

For a detailed overview over the year and the best time to visit Bulgaria, check out our Sliven's climate page.

  • What is the warmest city in September in Sliven?
  • According to our recent database analysis, Nova Zagora is the warmest city. It experiences an average maximum daytime temperature of approximately 26°C and rarely drops below 14°C during the night.

  • What is the coldest city in September in Sliven?
  • For the month of September, Kotel is the most temperate city in Sliven based on our records. With highs averaging 24°C and nighttime temperatures dipping to around 13°C.

    Interested in more climate information?

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