Sliven, Bulgaria Weather

  1. Sliven, Bulgaria Weather
  2. Current conditions
  3. Weather forecast
  4. Averages and extremes
  5. Yesterday's Data
  6. Temperature and possibility of rain in Sliven over the next 12 hours
  7. Temperature and possibility of rain in Sliven in the coming days
  8. Rainfall in Sliven in the coming days
  9. Sliven Weather Summary
  10. Weather averages by month
  11. Sliven's weather
  12. Frequently asked questions
  13. Comments
Sliven, Weather
(Photo by NIKLAS LINIGER on Unsplash)

Current conditions

Updated:
14°C
57.2°F
°C °F

Condition: Overcast

Pressure: 985 hPa

Feel like: 14 °C

Temperature: 14°C

Cloud: 100%

Humidity: 95%

Wind: ENE - 7 km/h

Visibility: 5.6 km

Weather forecast

Sun
09 Nov
13°C / 16°C
Slight Thunderstorm
Mon
10 Nov
9°C / 14°C
Slight Thunderstorm
Tue
11 Nov
8°C / 13°C
Slight Rain
Wed
12 Nov
7°C / 11°C
Overcast
Thu
13 Nov
7°C / 12°C
Overcast
Hourly forecast today:
18:00 PM
13° / 14°
13° / 14°
Overcast
95% 16 km/h
19:00 PM
13° / 13°
13° / 13°
Overcast
95% 21 km/h
20:00 PM
13° / 13°
13° / 13°
Overcast
96% 21 km/h
21:00 PM
13° / 13°
13° / 13°
Overcast
97% 20 km/h
22:00 PM
12° / 13°
12° / 13°
Overcast
98% 12 km/h
23:00 PM
12° / 13°
12° / 13°
Fog
99% 10 km/h
00:00 AM
12° / 12°
12° / 12°
Fog
99% 10 km/h
01:00 AM
12° / 12°
12° / 12°
Fog
99% 9 km/h
02:00 AM
12° / 12°
12° / 12°
Fog
99% 7 km/h
03:00 AM
12° / 12°
12° / 12°
Fog
99% 6 km/h
04:00 AM
12° / 12°
12° / 12°
Fog
98% 4 km/h

30 Day Averages and Extremes

  • Average high 14.07°C
  • Average low 7.6°C
  • Hottest day 19°C (31 October 2025)
  • Coldest day 0°C (21 November 2025)
  • Average humidity 77.13%
  • Days with precipitation 21 days
  • Highest precipitation 61 mm (05 November 2025)

Yesterday's Data

  • Max: 16°C
  • Min: 11°C
  • Total Precipitation: 2 mm

Temperature and possibility of rain in Sliven over the next 12 hours

Temperature and possibility of rain in Sliven in the coming days

Rainfall in Sliven in the coming days

Sliven Climate Summary

Sliven features a Marine west coast, warm summer (Köppen classification: Cfb), with an average annual temperature of 14.16ºC (57.49ºF), which is about 0.76% higher than the national average for Bulgaria. Annually, the city experiences approximately 39.26 millimeters (1.55 inches) of rainfall, spread across 96.91 rainy days, accounting for 26.55% of the year.

Longitude 42.6816536
Latitude 26.3228685
Yearly high temperature 17.23ºC (63.01ºF)
Yearly low temperature 7.77ºC (45.99ºF)
Hottest month July 29.0ºC (84.2ºF)
Coldest month January -2.52ºC (27.46ºF)
Yearly precip 39.26mm (1.55in)
Days with rainfall 96.91 days (26.55%)
Driest month September (57.81%)
Wettest month June (68.92%)

Weather averages by month

Month High / Low (°C) Rain
January 3.88° / -2.52° 7.82 days
February 6.77° / 0.0° 7.09 days
March 11.57° / 2.97° 8.09 days
April 16.58° / 5.75° 9.64 days
May 21.43° / 9.69° 14.27 days
June 25.84° / 14.21° 13.64 days
July 29.0° / 16.64° 9.27 days
August 30.08° / 17.36° 4.73 days
September 25.29° / 14.02° 4.36 days
October 17.7° / 9.15° 6.27 days
November 12.32° / 5.54° 5.18 days
December 6.32° / 0.41° 6.55 days

Sliven's weather

Frequently asked questions

1. What is the hottest month in Sliven?

July has the highest average monthly temperature (daily mean of 29.0ºC) and January are the coolest (daily mean of -2.52ºC).

2. What should I wear in Sliven today?

For today's mild weather in Sliven, with temperatures between 12ºC to 15ºC (53.6ºF to 59.0ºF), consider wearing:
- Lightweight sweater or cardigan
- Scarf (optional)
- Comfortable jeans or slacks
- Light jacket (for cooler periods)

Temperature

Early
10°C / 11°C
Morning
12°C / 14°C
Afternoon
13°C / 15°C
Evening
13°C / 13°C

Air quality

Moderate

Acceptable air quality, some pollutants present, minor health concerns for sensitive individuals

  • CO2 452
  • CO 157
  • NH3 0
  • NO2 6
  • O3 40
  • PM10 25
  • PM25 20
  • SO2 2
  • CH4 1,447

Sunrise / Sunset

04:59
14:58