Sofia · Bulgaria · 1995–2024 averages
Sofia weather, month by month. September is the pick.
Thirty years of averages for Sofia, Bulgaria — how hot it really feels, when the rain arrives, and what the air is like. September comes out on top; December is the one to skip.
The year at a glance
Tap a month for its full breakdown.
September
bestscore 91.1/100Mild, sticky and dryish, with moderate air.
- Feels like
- 21°
- mild
- Real temp
- 22°
- mild
- Humidity
- 66%
- sticky
- Rain
- 38mm
- dryish
- Cloud cover
- 46%
- bright
- Air quality
- 57
- moderate
- Daylight
- 12.5h
- even
Month by month, metric by metric
Each strip covers the same twelve months, so you can see where the rain lands and how the air shifts with it.
Feels like
peaks at 28° in July
Real temp
4–27° in the shade across the year
Humidity
62% at its driest, 80% at its most oppressive
Rain
71mm in May, 38mm in February
Cloud cover
31% at its clearest, 65% at its greyest
Air quality
worst in January, cleanest in May
Daylight
9.1h to 15.3h of daylight across the year
Sofia's air, month by month
The air is at its worst in January at 73 AQI (moderate), and at its cleanest in May at 55 (moderate). It tracks the seasons closely.
Every month in full
All twelve months, all seven measures.
| Month | Feels like | Real temp | Humidity | Rain | Cloud cover | Air quality | Daylight |
|---|---|---|---|---|---|---|---|
| January | 0° freezing | 4° freezing | 78% sweaty | 49mm dryish | 63% mixed | 73 moderate | 9.4h short |
| February | 3° freezing | 7° cold | 74% sticky | 38mm dryish | 61% mixed | 71 moderate | 10.5h shortish |
| March | 7° cold | 10° cold | 70% sticky | 57mm dryish | 60% mixed | 67 moderate | 11.9h shortish |
| April | 13° cold | 16° cool | 68% sticky | 59mm dryish | 57% mixed | 62 moderate | 13.4h even |
| May | 20° cool | 20° cool | 69% sticky | 71mm dryish | 56% mixed | 55 moderate | 14.6h long days |
| June | 25° mild | 24° mild | 69% sticky | 64mm dryish | 44% bright | 56 moderate | 15.3h long days |
| July | 28° warm | 27° mild | 63% comfy | 46mm dryish | 32% clear | 55 moderate | 15h long days |
| August | 28° warm | 27° mild | 62% comfy | 38mm dryish | 31% clear | 57 moderate | 13.9h even |
| September | 21° mild | 22° mild | 66% sticky | 38mm dryish | 46% bright | 57 moderate | 12.5h even |
| October | 15° cool | 17° cool | 73% sticky | 52mm dryish | 52% bright | 63 moderate | 11h shortish |
| November | 8° cold | 11° cold | 78% sweaty | 43mm dryish | 60% mixed | 68 moderate | 9.8h short |
| December | 2° freezing | 5° cold | 80% sweaty | 53mm dryish | 65% mixed | 72 moderate | 9.1h short |
Sofia weather questions
- What is the best time to visit Sofia?
- September scores best across temperature, rain, humidity and air quality — 21° feels-like, 38mm of rain and 66% humidity. December is the month to avoid: 53mm of rain and 72 AQI.
- How hot does Sofia get?
- July is the peak, at 28° feels-like (27° in the shade) — warm. Even in September it reaches 21°.
- When is the rainy season in Sofia?
- May is the wettest month at 71mm, and February the driest at just 38mm.
- Is air quality a problem in Sofia?
- January is the worst month at 73 AQI (moderate), and May the best at 55 (moderate).
Weather normals from Open-Meteo (ERA5 reanalysis, 1995–2024) and CAMS air quality (2015–2024), licensed CC-BY-4.0. Contains modified Copernicus Climate Change Service information. These are long-run averages, not forecasts — any given year will differ.
Going in September? You won't be the only one.
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