Sliven Climate by Month
Sliven, Bulgaria
Warm summers and cold winters, with rain spread through the year.
Sliven has warm summers and cold winters, with rain spread through the year. Afternoon highs range from 41°F (5°C) in January to 86°F (30°C) in August, and January nights average 29°F (-2°C). It gets 24 in (608 mm) of rain a year, spread across the months.
- Warmest month
- 86°F(30°C)
- Average high, August
- Coldest nights
- 29°F(-2°C)
- Average low, January
- Rain per year
- 24 in(608 mm)
- No clear rainy season
- Humidity
- 66%
- Sunniest: July
Best and worst months in Sliven
Best for weatherThe most comfortable weather comes in September, with highs around 75°F (24°C) and about 2.0 in (50 mm) of rain a month.
Least pleasantDecember and January are the least pleasant; January is the coldest, with highs of only 41°F (5°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in September.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Sliven weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 41°F(5°C) | 29°F(-2°C) | 1.8 in(45 mm) | 73% | 1.6 |
| FebFebruary | 46°F(8°C) | 31°F(-1°C) | 1.7 in(42 mm) | 76% | 2.4 |
| MarMarch | 53°F(12°C) | 36°F(2°C) | 1.9 in(47 mm) | 60% | 3.4 |
| AprApril | 62°F(17°C) | 42°F(6°C) | 2.0 in(50 mm) | 60% | 4.8 |
| MayMay | 73°F(23°C) | 52°F(11°C) | 2.6 in(66 mm) | 63% | 5.8 |
| JunJune | 80°F(27°C) | 59°F(15°C) | 2.4 in(61 mm) | 61% | 6.4 |
| JulJuly | 85°F(29°C) | 64°F(18°C) | 1.9 in(48 mm) | 56% | 6.5 |
| AugAugust | 86°F(30°C) | 64°F(18°C) | 1.4 in(35 mm) | 55% | 5.9 |
| SepSeptemberBest | 75°F(24°C) | 55°F(13°C) | 2.0 in(50 mm) | 61% | 4.4 |
| OctOctober | 65°F(18°C) | 48°F(9°C) | 2.2 in(56 mm) | 72% | 2.9 |
| NovNovember | 54°F(12°C) | 40°F(5°C) | 2.0 in(51 mm) | 72% | 1.8 |
| DecDecember | 44°F(7°C) | 32°F(0°C) | 2.2 in(57 mm) | 78% | 1.3 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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