Bulgaria climate
Monthly averages for Sofia, 2021–2025
In Sofia, the warmest month is July, with an average high of 30°C, and the coldest is January, when nights average −2°C.
About 656 mm of rain falls in a year, on roughly 98 days. May is the wettest month (84 mm) and July the driest (16 mm).
Wind is strongest in January (8 km/h on average) and lightest in June (6 km/h).
Compared with Dublin, July afternoons are 11°C warmer, and January afternoons 2°C colder.
The hottest day in 2021–2025 reached 38.2°C (5 August 2021), and the coldest night fell to −17.5°C (15 February 2021).
Temperature
Bars run from the average night-time low to the average daytime high, in °C.
Rainfall
Average total rainfall each month, in millimetres.
Wind
Average wind speed at 10 metres each month, in km/h.
| Month | High °C | Low °C | Rain mm | Rain days | Sun h/day | Wind km/h |
|---|---|---|---|---|---|---|
| January | 6 | −2 | 67 | 8 | 6.4 | 8 |
| February | 9 | −2 | 20 | 5 | 7.9 | 8 |
| March | 12 | 1 | 48 | 10 | 8.3 | 8 |
| April | 16 | 5 | 64 | 11 | 9.9 | 8 |
| May | 21 | 10 | 84 | 13 | 11.2 | 8 |
| June | 26 | 15 | 65 | 9 | 13.6 | 6 |
| July | 30 | 17 | 16 | 4 | 14.2 | 7 |
| August | 30 | 17 | 41 | 7 | 12.4 | 7 |
| September | 24 | 13 | 34 | 5 | 10.6 | 8 |
| October | 18 | 7 | 70 | 6 | 8.6 | 8 |
| November | 12 | 3 | 81 | 10 | 6.3 | 8 |
| December | 7 | 0 | 66 | 10 | 5.9 | 8 |