Average temperature in May is 15.1 °C
Average daytime temperature is 19.6 °C
Average night temperature is 11.2 °C
Absolute maximum temperature: 23.3 °C
Absolute minimum temperature: 6 °C
Number of sunny days: 10
Number of rainy days: 21
Number of snow days:
Precipitation sum: 63 mm
* Weather data for Sliven Bulgaria is based on climate observations for 2023 year
| May (°C) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperature | 19.1 | 18.7 | 17.5 | 18.1 | 17.7 | 19.5 | 20.6 | 20.3 | 13.4 | 14.6 | 14.9 | 16.1 | 18.1 | 18.5 | 20.8 | 23 | 17.5 | 16 | 21.7 | 21.4 | 22.9 | 21.9 | 21.7 | 21.3 | 21.9 | 22.7 | 21.3 | 19.7 | 21.1 | 23.3 | 23.3 |
| Apparent max temperature | 17.6 | 17.4 | 16.1 | 18.5 | 15.3 | 17.2 | 19.6 | 19.4 | 10.7 | 11.8 | 12.3 | 13.6 | 17.5 | 17.3 | 22.1 | 22.1 | 17.2 | 14.3 | 21.4 | 21.1 | 20 | 22.5 | 21.5 | 22.5 | 22.8 | 23.6 | 20.4 | 19.3 | 21.4 | 24.6 | 23.9 |
| Mean temperature | 13.9 | 13.5 | 12.5 | 12.9 | 14.2 | 15.2 | 14.6 | 13.9 | 10.6 | 10 | 10 | 11.2 | 12.5 | 14.2 | 15.6 | 17.8 | 13.9 | 13.5 | 17.1 | 17.2 | 18.1 | 16.9 | 16.5 | 16.7 | 17.5 | 18 | 17.8 | 17.2 | 17.6 | 18.3 | 19.3 |
| Apparent mean temperature | 6.2 | 5.9 | 6.4 | 7.4 | 8.7 | 8.5 | 7.1 | 6.2 | 5.3 | 3.7 | 3.6 | 4.4 | 4.2 | 7.8 | 10.9 | 11.8 | 10 | 9.3 | 10.5 | 11.5 | 12.1 | 11.8 | 11.2 | 11.8 | 12.1 | 13.6 | 14.5 | 15 | 14.6 | 14.5 | 13.9 |
| Minimum temperature | 8.5 | 8.8 | 8.9 | 9.2 | 11.2 | 10.9 | 9.1 | 8.7 | 7.4 | 6.3 | 6 | 7 | 6.6 | 10.3 | 11.6 | 12.9 | 11.5 | 11.9 | 13.3 | 13.4 | 14.6 | 13.2 | 12 | 12.6 | 12.5 | 14.4 | 15.3 | 14.9 | 15.4 | 15 | 14 |
| Apparent min temperature | 12.1 | 10.9 | 10.1 | 12.1 | 12.1 | 12.8 | 12.8 | 12.5 | 8.4 | 7.4 | 7.1 | 8.2 | 10.8 | 12.7 | 15.2 | 16.9 | 12.8 | 11.8 | 15 | 15.5 | 15.8 | 15.7 | 15.8 | 17.1 | 17.5 | 17.8 | 17.2 | 16.8 | 17.3 | 18.9 | 19.3 |
| May | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight duration (h) | 14.1 | 14.1 | 14.2 | 14.2 | 14.2 | 14.3 | 14.3 | 14.4 | 14.4 | 14.4 | 14.5 | 14.5 | 14.6 | 14.6 | 14.6 | 14.7 | 14.7 | 14.7 | 14.8 | 14.8 | 14.8 | 14.8 | 14.9 | 14.9 | 14.9 | 15 | 15 | 15 | 15 | 15.1 | 15.1 |
| Sunshine duration (h) | 12.8 | 12.8 | 9.5 | 10.6 | 12.5 | 13.1 | 13.1 | 11.4 | 1.4 | 9.2 | 11.5 | 12.4 | 13.5 | 11.6 | 9.8 | 8.6 | 1.9 | 0 | 13 | 12 | 13.6 | 12 | 12.4 | 12.2 | 13.8 | 13.6 | 12.3 | 11.1 | 10.9 | 10.4 | 13.8 |
| Precipitation (mm) | 0 | 0 | 2.9 | 3 | 0 | 0.6 | 0 | 7.5 | 0 | 0.2 | 0 | 0 | 0 | 0.1 | 0 | 0.9 | 8.7 | 2.3 | 0.4 | 0.3 | 0 | 5.6 | 1.5 | 4.8 | 5.5 | 4.8 | 2.2 | 6.2 | 1.1 | 3.8 | 0.5 |
| Precipitation hours | 0 | 0 | 2 | 11 | 0 | 2 | 0 | 8 | 0 | 2 | 0 | 0 | 0 | 1 | 0 | 1 | 13 | 6 | 2 | 3 | 0 | 6 | 7 | 5 | 4 | 11 | 9 | 11 | 6 | 6 | 5 |
| Wind speed (m/s) | 11.9 | 15.3 | 16.1 | 11.1 | 17.1 | 20.2 | 12.8 | 13 | 14.1 | 14.6 | 17.1 | 16.6 | 9.6 | 13.2 | 9.8 | 13.7 | 16.1 | 24.5 | 23.7 | 21.8 | 21.1 | 17.3 | 16.7 | 10.5 | 12 | 15.2 | 15.6 | 17.7 | 16.8 | 14 | 10.9 |
In May 2023, the highest daytime temperature in Sliven was 23.3°C.
While the minimum temperature at night dropped to 6°C.
The average nighttime and daytime temperatures during May in Sliven are 11.2°C and 19.6°C respectively.
The precipitation sum in May is about 63 mm.