Climate averages 1991–2020
Weather in Bulgaria in September
In September, average daytime highs across the 10 cities listed in Bulgaria range from 21.1°C in Pernik to 24.3°C in Pleven. Monthly rainfall ranges from 32 mm in Pernik to 58 mm in Sliven.
Long-term climate patterns, not a forecast for a particular trip.
City by city
September in Bulgaria
| City | Average highHigh / low | Average low | Rainfall mm | Rain days |
|---|---|---|---|---|
| Sofia | 21.9°C12.3°C | 12.3°C | 35 | 6.5 |
| Plovdiv | 23.9°C13.8°C | 13.8°C | 42 | 5.4 |
| Varna | 22.6°C15.8°C | 15.8°C | 48 | 5.9 |
| Burgas | 23.5°C15.2°C | 15.2°C | 50 | 6.0 |
| Stara Zagora | 24.3°C14.0°C | 14.0°C | 47 | 6.9 |
| Ruse | 24.1°C14.5°C | 14.5°C | 55 | 6.1 |
| Pleven | 24.3°C14.4°C | 14.4°C | 47 | 6.4 |
| Sliven | 23.4°C14.1°C | 14.1°C | 58 | 7.8 |
| Pernik | 21.1°C11.0°C | 11.0°C | 32 | 5.8 |
| Shumen | 22.5°C12.9°C | 12.9°C | 50 | 6.4 |
A rain day is a local calendar day with at least 1 mm of precipitation.