Weather in Sliven - 14-day forecast

Detailed weather forecast for Sliven, Bulgaria: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.

Forecast for the next days in Sliven

today🌧️ 28°💧 0.2 mm

Thu☁️ 25°💧 0.4 mm

Fri🌤️ 27°💧 0.6 mm

Sat☀️ 28°💧 1 mm

Sun☀️ 30°💧 0.1 mm

Mon☁️ 28°💧 0.2 mm

Tue☀️ 29°💧 1.3 mm

Wed🌧️ 28°💧 2 mm

⚠️ Weather warnings - Sliven

✅ No active weather warnings for Sliven (region: Sliven). The national weather service is not forecasting dangerous conditions.

14-day forecast - Sliven

📅 Sliven 30 & 45-day weather - long-range outlook

Next 16 days · forecast

29°

around 22° at night · days with rain: 8

Weeks 3-4 · avg for July

29°

around 19° at night · rain chance 27%

Weeks 5-7 · avg for August

29°

around 19° at night · rain chance 14%

The 30 & 45-day outlook for Sliven: the next 16 days are a numerical forecast updated daily - on average 29° by day and 22° at night. Further out we rely on multi-year climate averages: around 29° in July, and about 29° in August. Forecasts beyond two weeks are indicative only.

Day-by-day forecast for Sliven

Wednesday8 July 2026

🌧️28°light rain

sunrise 05:44 · sunset 20:55 · night 21° · evening 21° · rain 0.17 mm · humidity 37% · wind 9 m/s · clouds 1%

Thursday9 July 2026

☁️25°broken clouds

sunrise 05:45 · sunset 20:54 · night 17° · evening 25° · rain 0.36 mm · humidity 37% · wind 6 m/s · clouds 83%

Friday10 July 2026

🌤️27°a few clouds

sunrise 05:46 · sunset 20:54 · night 19° · evening 27° · rain 0.6 mm · humidity 28% · wind 3 m/s · clouds 11%

Saturday11 July 2026

☀️28°clear sky

sunrise 05:47 · sunset 20:53 · night 24° · evening 31° · rain 0.96 mm · humidity 32% · wind 2 m/s · clouds 3%

Sunday12 July 2026

☀️30°clear sky

sunrise 05:47 · sunset 20:53 · night 23° · evening 32° · rain 0.12 mm · humidity 36% · wind 5 m/s · clouds 9%

Monday13 July 2026

☁️28°broken clouds

sunrise 05:48 · sunset 20:52 · night 22° · evening 31° · rain 0.15 mm · humidity 34% · wind 4 m/s · clouds 80%

Tuesday14 July 2026

☀️29°clear sky

sunrise 05:49 · sunset 20:52 · night 22° · evening 26° · rain 1.26 mm · humidity 34% · wind 3 m/s · clouds 2%

Wednesday15 July 2026

🌧️28°light rain

sunrise 05:50 · sunset 20:51 · night 19° · evening 24° · rain 2.04 mm · humidity 37% · wind 4 m/s · clouds 100%

Thursday16 July 2026

🌧️26°light rain

sunrise 05:51 · sunset 20:50 · night 21° · evening 25° · rain 4.14 mm · humidity 49% · wind 6 m/s · clouds 34%

Friday17 July 2026

🌧️28°light rain

sunrise 05:51 · sunset 20:50 · night 24° · evening 30° · rain 2.49 mm · humidity 44% · wind 3 m/s · clouds 1%

Saturday18 July 2026

☀️30°clear sky

sunrise 05:52 · sunset 20:49 · night 25° · evening 34° · rain 2.91 mm · humidity 40% · wind 5 m/s · clouds 99%

Sunday19 July 2026

🌧️28°moderate rain

sunrise 05:53 · sunset 20:48 · night 20° · evening 29° · rain 6.99 mm · humidity 47% · wind 7 m/s · clouds 30%

Monday20 July 2026

🌧️29°light rain

sunrise 05:54 · sunset 20:47 · night 24° · evening 28° · rain 2.13 mm · humidity 47% · wind 4 m/s · clouds 29%

Tuesday21 July 2026

☀️30°clear sky

sunrise 05:55 · sunset 20:47 · night 25° · evening 30° · rain 1.41 mm · humidity 39% · wind 4 m/s · clouds 63%

Wednesday22 July 2026

☀️32°clear sky

sunrise 05:56 · sunset 20:46 · night 25° · evening 34° · humidity 38% · wind 4 m/s

Thursday23 July 2026

☀️32°clear sky

sunrise 05:57 · sunset 20:45 · night 23° · evening 34° · humidity 33% · wind 8 m/s

☀️ UV index in Sliven - is it safe to sunbathe?

Today the UV index in Sliven is 7 (high) - unprotected fair skin can burn in about 30 minutes. SPF 30-50, a hat and sunglasses are a must. Better stay in shade between 11:00 and 15:00.

🌿 Pollen in Sliven - info for allergy sufferers

Today grasses pollen is highest in Sliven - about 16 grains/m³, moderate level. Most allergy sufferers should not feel strong symptoms. Pollen levels are a CAMS model forecast and are indicative.

Air quality and smog in Sliven

City	PM2.5 (µg/m³)	PM10 (µg/m³)	Air quality
Sofia	14.2	15.7	good
Ruse	10.5	12.8	very good
Plewen	8.1	10.5	very good
Burgas	7.5	10.3	very good
Warna	7	10.1	very good
Stara Zagora	6.9	8.8	very good
Plowdiw	6.5	9.8	very good

Based on PM2.5 thresholds. Station readings, updated daily (last reading: 2026-07-08, 04:00).

Sliven weather through the year

Warmest, driest months on average: April, May, June, July.

🎉 Public holidays in Sliven - when are the long weekends?

Next long weekend in Sliven: Unification Day (7 September, Monday) - Saturday–Monday (3 days off).

7 SeptemberMonday

Unification Day

🎈 long weekend

22 SeptemberTuesday

Independence Day

🎈 long weekend + bridge day

24 DecemberThursday

Christmas Eve

🎈 long weekend + bridge day

25 DecemberFriday

Christmas Day

🎈 long weekend

26 DecemberSaturday

Second day of Christmas

falls on a weekend

1 JanuaryFriday 2027

New Year's Day

🎈 long weekend

3 MarchWednesday 2027

Liberation Day

30 AprilFriday 2027

Good Friday

🎈 long weekend

1 MaySaturday 2027

International Workers' Day

falls on a weekend

2 MaySunday 2027

Easter Sunday

falls on a weekend

3 MayMonday 2027

Easter Monday

🎈 long weekend

6 MayThursday 2027

Saint George's Day

🎈 long weekend + bridge day

Public holidays (statutory days off) - shops, offices and some attractions may be closed. A "bridge day" is a workday between a holiday and the weekend worth taking as leave.

Nearby places

VelikoturnovoShumenGabrovoBurgas

FAQ - Sliven weather

What is the weather like in Sliven today?

Today it is about 28° during the day and 21° at night, light rain.

How far ahead can I check the forecast for Sliven?

This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.