Average temperature in Sliven
The mean minimum and maximum temperatures over the year in Sliven (Sliven), Bulgaria.
- The months of May, June, July, August and September have nice average temperatures.
- On average, the warmest month(s) are July and August.
- On average, the warmest month is August with 29°C.
- On average, the coolest month is January with 5°C.
- The average annual maximum temperature is 17°C.
- The average annual minimum temperature is 7°C.
Weather Forecasts for Sliven
broken clouds and rain
clear and no rain
broken clouds and no rain