Last updated: March 2, 2024
The weather in Sliven, Bulgaria, during April is characterized by an average temperature of 10°C (50°F). Highs can soar to 22°C (72°F), while lows may dip to -1°C (31°F). Typically, the humidity level in Sliven throughout April hovers around 70%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In April, Sliven averages 58 mm (2.3 inches) of rainfall, typically over the course of 10 rainy days. The month enjoys an average of 13 hours 24 minutes of daylight, with the sun shining for approximately 11 hours 22 minutes each day. Additionally, there is a 42% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In April, the UV Index in Sliven reaches a maximum of 8, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 15 minutes.
| 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UVI | 1 | 1 | 2 | 4 | 6 | 7 | 8 | 7 | 6 | 4 | 2 | 1 | 1 |
| Exposure | Low | Moderate | High | VeryHigh | High | Moderate | Low | ||||||
| Time to burn | 45 min | 30 min | 25 min | 15 min | 25 min | 30 min | 45 min | ||||||