Sliven Weather Averages
Climate averages for Sliven based on 10 years of historical data.
Annual avg temp
12.9°C
Annual avg high
18.0°C
Annual avg low
8.4°C
Record high
39°C
Record low
-17°C
Annual rainfall
655 mm
Rainy days
94
Sunshine
4.9h/day
Vlhkosť
68%
Average Sliven temperatures by month
Avg high
Avg low
Average rainfall in Sliven by month
Rainfall (mm)
Sunshine hours in Sliven by month
Sunshine (h/day)
Humidity in Sliven by month
Average humidity
Month-by-month averages
| Month | Avg High | Avg Low | Rainfall | Sunshine |
|---|---|---|---|---|
| Počasie v januári | 5°C | -1°C | 74 mm | 3.2h |
| Počasie vo februári | 9°C | 1°C | 53 mm | 3.7h |
| Počasie v marci | 12°C | 3°C | 61 mm | 3.3h |
| Počasie v apríli | 17°C | 6°C | 63 mm | 4.7h |
| Počasie v máji | 21°C | 11°C | 59 mm | 4.3h |
| Počasie v júni | 26°C | 15°C | 59 mm | 4.8h |
| Počasie v júli | 30°C | 18°C | 27 mm | 7.1h |
| Počasie v auguste | 31°C | 18°C | 22 mm | 7.9h |
| Počasie v septembri | 26°C | 14°C | 27 mm | 6.4h |
| Počasie v októbri | 19°C | 9°C | 53 mm | 5.5h |
| Počasie v novembri | 13°C | 5°C | 82 mm | 4.0h |
| Počasie v decembri | 8°C | 1°C | 75 mm | 3.3h |