Average annual temperature is 14.0 °C
Absolute maximum temperature: 39.3 °C
Absolute minimum temperature: -5.9 °C
Number of sunny days: 170 days
Number of rainy days: 190 days
Number of snow days: 5 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) | 17.4 | 19.1 | 20.3 | 20.4 | 24.0 | 29.2 | 39.3 | 33.7 | 29.9 | 27.5 | 26.3 | 20.1 |
| Average daytime temperature (°C) | 10.4 | 8.8 | 12.2 | 14.9 | 17.8 | 23.8 | 30.0 | 28.9 | 24.5 | 22.0 | 16.1 | 12.1 |
| Average temperature (°C) | 6.8 | 4.7 | 8.1 | 10.7 | 13.8 | 19.1 | 24.1 | 23.8 | 20.1 | 16.7 | 11.7 | 8.1 |
| Average night temperature (°C) | 3.6 | 1.0 | 4.1 | 7.0 | 10.1 | 14.4 | 18.1 | 19.2 | 16.2 | 12.2 | 7.4 | 4.1 |
| Absolute minimum temperature (°C) | -4.2 | -5.9 | -3.7 | 2.2 | 5.7 | 11.1 | 13.6 | 15.7 | 12.3 | 7.0 | -0.2 | -2.7 |
| 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) | 4.3 | 6.4 | 6.3 | 8.5 | 10.3 | 12.8 | 13.4 | 12.4 | 10.6 | 9.0 | 5.5 | 5.0 |
| Precipitation (mm) | 34 | 38 | 78 | 145 | 88 | 51 | 36 | 21 | 91 | 12 | 142 | 83 |
| Sunny days | 13 | 16 | 8 | 7 | 9 | 14 | 20 | 23 | 12 | 24 | 9 | 15 |
| Rainy days | 17 | 8 | 23 | 23 | 22 | 16 | 11 | 8 | 18 | 7 | 21 | 16 |
| Snow days | 1 | 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