Home › Weather › Weather In Bulgaria In September
Live forecasts update automatically; written guidance last reviewed 20 June 2026 by the Civic Affairs weather desk. Data from national met services via Open-Meteo.
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September in Bulgaria is warm and largely settled, with daytime highs averaging 25–28°C along the coast and a little cooler inland, making it an ideal shoulder month for beach holidays before autumn arrives.
What is the typical weather in Bulgaria in September?
September sees the tail end of summer heat, especially in the first two weeks. The Black Sea coast, including Sunny Beach and Burgas, stays pleasantly warm with sea temperatures around 22°C. Inland cities such as Sofia and Plovdiv are slightly cooler but still see plenty of sunshine. Rain is infrequent – typically 5–7 rainy days across the month – and humidity is lower than in July or August. Evenings can feel noticeably cooler, so a light jacket is useful after sunset.
How does September compare with other months?
Compared with weather in Bulgaria in June and July, September is less humid and more comfortable for sightseeing. It is noticeably warmer than weather in Bulgaria in October, when highs drop to 18–21°C and rain becomes more likely. Travelers looking at weather in Bulgaria in September and October side-by-side will find September the safer bet for sunbathing and outdoor dining. (Those considering weather in Bulgaria in May will see similar averages, though September has warmer sea temperatures.)
Is September a good time to visit Bulgaria?
Yes – the weather remains warm but less intense than mid-summer, crowds thin out, and accommodation prices often drop. It is one of the best months for a balanced holiday.
What is the weather like at Sunny Beach in September?
Sunny Beach sees daytime highs around 26°C with sea temperatures still swimmable at 22°C. Sunshine hours are still high, though a few cooler, overcast days can occur later in the month.
How does September 2024 compare with previous years?
Long-term records show little variation; September 2022 was slightly warmer than average, with highs near 29°C in the first week. Check the live forecast above for up-to-date trends.
For broader comparisons, see our UK weather hub or check the 10 day weather forecast UK if you’re planning a trip from Britain.