Year-round weather and climate in Sliven, Bulgaria
Average temperatures in Sliven run from an average low of 0°C32°F in February up to an average high of 32°C90°F in July. February is the driest month at 5 rainy days; November the wettest at 13 rainy days. Here is the annual climate data, so you know what you are packing for.
Good to know
- Population
- 84K
- Currency
- BGN
- Language
- Bulgarian
- Time zone
- Sofia
Best time to visit
The most pleasant weather falls in July, August, and September, offering a perfect balance of comfortable temperatures and clear skies.
Rain character
Moderate Showers: Rainfall is standard and manageable. A compact travel umbrella or light rain jacket will easily get you through any wet days.
Day-to-night swing
The Daypack Trap: Beware the "noon illusion". In months like July, crisp sunny days drop off a cliff by <span class="val-c">13°C</span><span class="val-f">23°F</span> at sunset. Always carry an evening layer.
Seasonality Profile
True Four Seasons: Dramatic contrasts. Freezing winters, transitional shoulders, and blazing summers.
Evening vibe
Seasonal Terraces: During the more temperate months, the city opens up with lively outdoor terraces. For the rest of the year, expect to dine indoors.
Sightseeing stamina
Summer Heat Fatigue: Midday heat in July and August is intense. Pack high-SPF sunscreen and a wide-brimmed hat.
Average temperatures, sunshine, and rainfall
Average monthly weather in Sliven, based on recent historical data. Essential insights on temperature swings, expected rainfall, and daily sunshine.
Bars span the average daily low to high. Feb is typically driest at 5 rainy days (34mm); Nov the wettest at 13 rainy days (123mm).
| Month | Average high | Average low | Daily sunshine | Rainy days | Total rainfall |
|---|---|---|---|---|---|
| Jan | 8°C / 46°F | 1°C / 33°F | 6h | 9 | 64mm |
| Feb | 9°C / 48°F | 0°C / 32°F | 7h | 5 | 34mm |
| Mar | 14°C / 57°F | 4°C / 40°F | 8h | 9 | 46mm |
| Apr | 17°C / 63°F | 7°C / 44°F | 10h | 12 | 83mm |
| May | 20°C / 69°F | 11°C / 51°F | 11h | 12 | 71mm |
| Jun | 29°C / 84°F | 16°C / 62°F | 14h | 6 | 27mm |
| Jul | 32°C / 90°F | 19°C / 67°F | 14h | 5 | 26mm |
| Aug | 31°C / 88°F | 18°C / 65°F | 12h | 5 | 32mm |
| Sep | 26°C / 79°F | 15°C / 59°F | 11h | 5 | 27mm |
| Oct | 19°C / 67°F | 9°C / 48°F | 9h | 6 | 56mm |
| Nov | 13°C / 56°F | 5°C / 41°F | 6h | 13 | 123mm |
| Dec | 9°C / 48°F | 2°C / 35°F | 5h | 7 | 72mm |
Weather data by Open-Meteo.com (opens in a new tab)
Frequently Asked Questions
When is the sunniest time of year to visit Sliven?
July is the sunniest month in Sliven, averaging 14 hours of sunshine a day. Pack sunglasses and high-SPF sunscreen.
What clothes should I pack for Sliven?
Your packing list depends entirely on when you travel. Temperatures in Sliven swing from an average low of 0°C32°F in February up to 32°C90°F in July. The Packola app builds a tailored packing list for you based on the live weather forecast for your exact travel dates.
Do I need to pack an umbrella for Sliven?
Sliven gets rain on about 94 days a year, with November being the wettest. If you're traveling then, pack an umbrella and a light rain jacket.
Pack smarter.
Averages get you close, but the week you travel is what matters. Get the live forecast, a smart packing list, and discover the best local spots and activities in Sliven with Packola.
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