Average annual temperature is 13.6 °C
Absolute maximum temperature: 34.4 °C
Absolute minimum temperature: -8.1 °C
Number of sunny days: 198 days
Number of rainy days: 163 days
Number of snow days: 4 days
Look at detailed online map of Klyuch
* Weather data for Klyuch 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) | 15.6 | 16.3 | 19.0 | 18.5 | 22.9 | 28.7 | 34.4 | 33.3 | 31.2 | 26.1 | 21.3 | 16.9 |
| Average daytime temperature (°C) | 8.5 | 9.3 | 12.8 | 14.4 | 18.9 | 24.5 | 30.6 | 29.5 | 26.4 | 22.0 | 13.7 | 10.1 |
| Average temperature (°C) | 4.6 | 4.4 | 8.3 | 9.8 | 14.8 | 19.9 | 24.9 | 24.0 | 20.7 | 16.3 | 9.1 | 5.3 |
| Average night temperature (°C) | 1.4 | -0.4 | 3.4 | 4.7 | 10.2 | 14.2 | 18.0 | 18.0 | 15.1 | 11.1 | 4.6 | 1.1 |
| Absolute minimum temperature (°C) | -3.8 | -8.1 | -2.1 | -1.8 | 7.0 | 11.5 | 11.7 | 11.8 | 11.6 | 6.2 | -7.1 | -4.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.6 | 11.9 | 13.3 | 14.5 | 15.1 | 14.8 | 13.8 | 12.5 | 11.1 | 9.9 | 9.2 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 5.7 | 8.6 | 8.6 | 9.8 | 9.8 | 12.0 | 13.3 | 12.6 | 10.4 | 8.9 | 6.2 | 6.3 |
| Precipitation (mm) | 97 | 27 | 64 | 98 | 110 | 90 | 5 | 40 | 19 | 18 | 123 | 75 |
| Sunny days | 17 | 22 | 17 | 10 | 7 | 9 | 20 | 19 | 20 | 24 | 13 | 20 |
| Rainy days | 13 | 5 | 14 | 19 | 24 | 21 | 11 | 12 | 10 | 7 | 16 | 11 |
| Snow days | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
The best time to visit Klyuch during the most sunny months:
The largest precipitation sum in Klyuch is at