Climate averages 1991–2020
Sliven weather
in October.
A mild, moderately wet month: the 6th warmest and the joint 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a mild month in Sliven: daytime highs average 17.6°C and nights cool to about 9.6°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 63 mm of rain on roughly 8 days, which makes October a moderately wet month (the joint 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 06 min on an average October day.
The nearest other city in this atlas is Stara Zagora (63 km away). In October its highs average 18.3°C, 0.6°C warmer than Sliven, with 57 mm of rain.
Among the 10 cities listed in Bulgaria, Sliven ranks 6th of 10 for the warmest October highs and 10th of 10 for the driest October (rainfall, lowest first). The mean October high of those 10 cities is 17.4°C; Sliven is 0.2°C warmer than that mean.
From October to November, average highs fall by 5.9°C to 11.8°C, and monthly rainfall falls from 63 mm to 58 mm.
The annual picture
October 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 | 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, selected | 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
October in nearby cities
- Stara Zagora in OctoberBulgaria · 63 kmHigh 18.3°C · Low 9.1°C · 57 mm rain
- Shumen in OctoberBulgaria · 81 kmHigh 16.7°C · Low 8.0°C · 51 mm rain
- Burgas in OctoberBulgaria · 96 kmHigh 18.1°C · Low 10.7°C · 61 mm rain
- Edirne in OctoberTurkey · 114 kmHigh 20.2°C · Low 10.4°C · 60 mm rain
- Ruse in OctoberBulgaria · 133 kmHigh 17.9°C · Low 9.1°C · 51 mm rain
- Varna in OctoberBulgaria · 142 kmHigh 17.2°C · Low 11.1°C · 56 mm rain
- Plovdiv in OctoberBulgaria · 142 kmHigh 17.9°C · Low 8.6°C · 42 mm rain
- Pleven in OctoberBulgaria · 161 kmHigh 18.3°C · Low 9.1°C · 45 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.