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Sofia Weather by Month
Average temperatures, rainfall and humidity for Sofia, Bulgaria, month by month, built from OpenWeather's historical records. Use it to see what a typical Sofia month looks like before you travel — then check the live Sofia forecast for the days ahead.
Warmest month
August
29°C average high
Coolest month
January
-4°C average low
Wettest month
December
69 mm of rain
Driest month
January
11 mm of rain
Average temperature and rainfall in Sofia by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 4°C | -4°C | -23°C / 19°C | 11 mm | 83% | 10 km/h |
| February | 8°C | -2°C | -18°C / 23°C | 12 mm | 77% | 11 km/h |
| March | 12°C | 1°C | -19°C / 28°C | 23 mm | 69% | 12 km/h |
| April | 17°C | 5°C | -4°C / 30°C | 31 mm | 66% | 11 km/h |
| May | 21°C | 9°C | -1°C / 34°C | 47 mm | 69% | 11 km/h |
| June | 26°C | 13°C | 5°C / 38°C | 53 mm | 69% | 9 km/h |
| July | 29°C | 15°C | 6°C / 40°C | 19 mm | 60% | 10 km/h |
| August | 29°C | 15°C | 5°C / 39°C | 21 mm | 59% | 10 km/h |
| September | 24°C | 11°C | -1°C / 35°C | 41 mm | 65% | 10 km/h |
| October | 18°C | 5°C | -8°C / 31°C | 30 mm | 73% | 9 km/h |
| November | 12°C | 2°C | -11°C / 25°C | 19 mm | 80% | 9 km/h |
| December | 6°C | -2°C | -18°C / 20°C | 69 mm | 83% | 10 km/h |
Best time to visit Sofia
The most comfortable time to visit Sofia is generally May to June and September, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around December, totalling about 375 mm a year.
Travellers who prefer heat should aim for August, when highs average 29°C. December is the month to avoid if rain would spoil your plans — it averages 69 mm, roughly 6× the rainfall of January.
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Sofia forecast for what is happening now.