Climate averages 1991–2020
Sliven weather
in June.
A warm, wet month: the 3rd warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
June is a warm month in Sliven: daytime highs average 25.3°C and nights cool to about 15.8°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 100 mm of rain on roughly 14 days, which makes June a wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 15 h 16 min on an average June day.
The nearest other city in this atlas is Stara Zagora (63 km away). In June its highs average 26.1°C, 0.8°C warmer than Sliven, with 68 mm of rain.
Among the 10 cities listed in Bulgaria, Sliven ranks 5th of 10 for the warmest June highs and 10th of 10 for the driest June (rainfall, lowest first). The mean June high of those 10 cities is 25.2°C; Sliven is 0.1°C warmer than that mean.
From June to July, average highs rise by 2.4°C to 27.7°C, and monthly rainfall falls from 100 mm to 88 mm.
The annual picture
June in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Sliven climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 5.4°C-1.4°C | -1.4°C | 53 | 7.7 | 9.49 h |
| February | 7.4°C-0.5°C | -0.5°C | 54 | 8.1 | 10.511 h |
| March | 11.2°C2.2°C | 2.2°C | 67 | 10.7 | 11.912 h |
| April | 16.4°C6.6°C | 6.6°C | 75 | 12.2 | 13.413 h |
| May | 21.4°C11.6°C | 11.6°C | 106 | 14.5 | 14.615 h |
| June, selected | 25.3°C15.8°C | 15.8°C | 100 | 14.0 | 15.315 h |
| July | 27.7°C17.9°C | 17.9°C | 88 | 11.6 | 15.015 h |
| August | 28.1°C17.9°C | 17.9°C | 56 | 8.0 | 13.914 h |
| September | 23.4°C14.1°C | 14.1°C | 58 | 7.8 | 12.513 h |
| October | 17.6°C9.6°C | 9.6°C | 63 | 7.8 | 11.111 h |
| November | 11.8°C4.8°C | 4.8°C | 58 | 7.4 | 9.810 h |
| December | 6.5°C0.2°C | 0.2°C | 63 | 8.6 | 9.19 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
June in nearby cities
- Stara Zagora in JuneBulgaria · 63 kmHigh 26.1°C · Low 15.6°C · 68 mm rain
- Shumen in JuneBulgaria · 81 kmHigh 24.8°C · Low 14.8°C · 63 mm rain
- Burgas in JuneBulgaria · 96 kmHigh 25.2°C · Low 16.6°C · 50 mm rain
- Edirne in JuneTurkey · 114 kmHigh 28.4°C · Low 16.4°C · 37 mm rain
- Ruse in JuneBulgaria · 133 kmHigh 26.7°C · Low 16.8°C · 79 mm rain
- Varna in JuneBulgaria · 142 kmHigh 24.5°C · Low 17.1°C · 49 mm rain
- Plovdiv in JuneBulgaria · 142 kmHigh 26.0°C · Low 15.3°C · 46 mm rain
- Pleven in JuneBulgaria · 161 kmHigh 26.7°C · Low 16.6°C · 80 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Sliven) is explained once on the Sliven year overview and on the Sources, method and limits page.