Sofia
Bulgaria
| Season | Autumn | Winter | Spring | Summer | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Year |
| Record high, °C | 36 | 32 | 25 | 21 | 18 | 20 | 25 | 27 | 33 | 34 | 33 | 37 | 37 |
| Average high, °C | 24 | 18 | 13 | 8 | 6 | 6 | 9 | 15 | 20 | 25 | 27 | 27 | 16 |
| Average temperature, °C | 19 | 14 | 9 | 5 | 3 | 3 | 6 | 11 | 16 | 21 | 23 | 23 | 13 |
| Average low, °C | 14 | 10 | 5 | 2 | -1 | 0 | 2 | 7 | 12 | 16 | 18 | 18 | 9 |
| Record low, °C | 3 | -7 | -10 | -12 | -15 | -15 | -13 | 0 | 2 | 7 | 10 | 10 | -15 |
| Rain, days | 5 | 7 | 9 | 8 | 6 | 6 | 8 | 9 | 7 | 7 | 5 | 4 | 81 |
| Snow, days | 0 | 0 | 1 | 2 | 5 | 5 | 2 | 0 | 0 | 0 | 0 | 0 | 15 |
| Fog, days | 19 | 20 | 21 | 23 | 22 | 20 | 23 | 21 | 22 | 20 | 22 | 19 | 252 |
| Thunderstorms, days | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 5 | 4 | 3 | 18 |
| Average precipitation, mm. | 31 | 36 | 50 | 42 | 38 | 41 | 34 | 44 | 40 | 46 | 37 | 32 | 471 |
| Relative humidity morning, % | 83 | 83 | 84 | 85 | 84 | 84 | 85 | 83 | 85 | 85 | 82 | 80 | 84 |
| Relative humidity evening, % | 68 | 72 | 76 | 78 | 77 | 75 | 76 | 74 | 74 | 71 | 69 | 66 | 73 |
| Wind speed, km/h | 9 | 22 | 16 | 17 | 16 | 25 | 19 | 9 | 9 | 9 | 9 | 9 | 14 |
| Day Length, часов | 13 | 12 | 10 | 10 | 10 | 11 | 13 | 14 | 15 | 16 | 16 | 14 | 13 |
| Dew point, °C | 13 | 9 | 4 | 1 | -1 | 0 | 2 | 6 | 11 | 15 | 16 | 16 | 92 |
| Growing degree-day, °C | 117 | 0 | 0 | 84 | 0 | 0 | 34 | 183 | 344 | 384 | 397 | 276 | 1819 |
| Solar radiation, global, Mj/m2 | 15 | 9 | 6 | 5 | 5 | 8 | 12 | 16 | 20 | 22 | 22 | 20 | 13 |