Average annual temperature is 15.1 °C
Absolute maximum temperature: 39.4 °C
Absolute minimum temperature: -2.8 °C
Number of sunny days: 176 days
Number of rainy days: 185 days
Number of snow days: 4 days
Look at detailed online map of Kosti
* Weather data for Kosti Bulgaria is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 18.2 | 19.1 | 19.9 | 21.4 | 22.1 | 28.6 | 39.4 | 32.0 | 28.5 | 29.3 | 27.2 | 21.2 |
| Average daytime temperature (°C) | 10.6 | 9.2 | 11.8 | 14.1 | 16.8 | 23.1 | 28.6 | 28.0 | 24.7 | 22.2 | 17.0 | 12.4 |
| Average temperature (°C) | 7.9 | 6.0 | 8.8 | 11.3 | 14.5 | 20.2 | 24.6 | 24.8 | 22.0 | 18.3 | 13.1 | 9.1 |
| Average night temperature (°C) | 5.2 | 2.8 | 5.5 | 8.4 | 12.1 | 17.0 | 19.9 | 21.7 | 19.3 | 14.3 | 9.2 | 5.5 |
| Absolute minimum temperature (°C) | -1.0 | -2.8 | 0.9 | 3.9 | 7.4 | 14.2 | 15.9 | 18.3 | 14.5 | 9.4 | 1.8 | -0.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 13.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.5 | 10.6 | 11.9 | 13.4 | 14.6 | 15.2 | 14.9 | 13.8 | 12.5 | 11.1 | 9.8 | 9.2 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 4.5 | 6.2 | 6.7 | 9.1 | 10.9 | 13.3 | 13.5 | 12.4 | 10.8 | 9.0 | 5.5 | 4.8 |
| Precipitation (mm) | 25 | 42 | 78 | 104 | 76 | 36 | 34 | 18 | 86 | 13 | 141 | 88 |
| Sunny days | 13 | 14 | 9 | 9 | 9 | 17 | 23 | 22 | 13 | 23 | 10 | 14 |
| Rainy days | 18 | 10 | 22 | 21 | 22 | 13 | 8 | 9 | 17 | 8 | 20 | 17 |
| Snow days | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Kosti during the most sunny months:
The largest precipitation sum in Kosti is at