Sliven Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Sliven.
Climate overview of Sliven
Sliven, Sliven, Bulgaria, sees big temperature differences between seasons, with August peaking at 29°C (84°F) and January dropping to 5°C (41°F).
Sliven sees a moderate amount of rain/snowfall, totalling around 815 mm (32 in) per year. It experiences warm summers and cold winters, creating some seasonal variation.
Sliven Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Sliven - and find the best time to visit.
Monthly Temperature in Sliven
Visitors to Sliven can expect significant temperature changes throughout the year. Average maximum daytime temperatures range from a comfortable 29°C (84°F) in August, the warmest time of the year, to a chilly 5°C (41°F) during cooler months like January.
At night, you can expect temperatures ranging from 17°C (63°F) in August to around -2°C (28°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Sliven
Generally, Sliven experiences moderate precipitation patterns, averaging 815 mm (32 in) yearly. While rainfall varies throughout the year, each season offers its own charm. May brings wetter days averaging 95 mm (3.7 in) of precipitation, spread over 11 rainy days.
In contrast, the driest month August experiences a drier climate, with about 49 mm (1.9 in) of rainfall spread across 6 rainy days. For more details, please visit our Sliven Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Sliven
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, June, July, August and September
- Warmest weather: July and August
- Fewest rainy days: July, August, September and October
- Seasonal pattern: Warm summers and cold winters
- Coldest conditions: January, with freezing nights around -2°C (28°F).
Frequently asked questions about the climate in Sliven
What is the best time to visit Sliven?
May, June, July, August and September typically offer the most optimal weather in Sliven. In contrast, January, February and December tend to have less optimal conditions. Sliven has warm summers and cold winters.
What temperatures can I expect in Sliven?
Daytime highs range from 5°C (41°F) in January to 29°C (84°F) in August. Nighttime lows range from -2°C (28°F) to 17°C (63°F). Temperatures vary considerably through the year.
How much rain does Sliven get?
Annual rainfall is around 815 mm (32 in). May is the wettest month with 95 mm (3.7 in), while August is the driest with 49 mm (1.9 in).
Sliven 3-Day Forecast
Sliven on the map
Sliven is highlighted - select any city to see its climate.
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