The climate in Slivnitsa during September can be summarized as mild and reasonably dry.
September is in the fall / autumn in Slivnitsa and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 21°C (70°F), whilst at night 10°C (49°F) is normal.
| Daytime temperature | 21.3°C 70.3°F |
|---|---|
| Nightly temperature | 9.6°C 49.2°F |
| Average temperature | 15.4°C 59.7°F |
| Daily sunshine | 7.7 hrs |
| Avg rainfall | 47 mm 1.9 ins |
| Rainy days | 6 days |
| Sea temperature | 22.9°C 73.3°F |
| Humidity | 67% |
| Windspeed | 9.4kph 6 mph |
On average September is the 5th driest month of the year in Slivnitsa with around 47mm 1.9 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 6 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.7 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Slivnitsa in September 2025.
Best places to visit in September
| Hottest month: | July | 24.3°C 75.7°F |
|---|---|---|
| Driest month: | January | 40mm 1.6ins |
| Sunniest month: | August | 9.4hrs |
| Coldest month: | January | 0.6°C 33.1°F |
| Wettest month: | May | 88mm 3.5ins |