Home › Weather › Weather In Bulgaria In September
Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the MarketUK weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Expect daytime highs of 24–28°C along the coast and 22–26°C inland, with sea temperatures around 22–24°C — September is one of the best months for a beach holiday before the autumn chill arrives.
What is the typical weather in Bulgaria in September?
September brings warm, settled conditions across Bulgaria. The Black Sea coast, including Sunny Beach, averages 25–28°C with nine hours of sunshine daily, while inland cities like Sofia see 22–25°C. Rainfall is low, typically 40–60mm for the month, with only 5–7 wet days. Evenings cool to 12–16°C, so pack a light jacket.
Is September a good time for Sunny Beach or a city break?
Yes, for both. Sunny Beach in September sees fewer crowds and still-warm sea swimming, with daily highs near 27°C. Inland, Sofia and Plovdiv offer pleasant sightseeing weather. For comparison, weather in Bulgaria in June is hotter (30°C+) and more humid, while weather in Bulgaria in October drops to 15–19°C with more rain. The weather in Bulgaria in September 2022 was typical: warm and mostly dry, matching the long-term averages.
Does it rain much in Bulgaria in September?
No. September is one of the driest months, averaging 40–60mm of rain spread over 5–7 days. Showers are usually brief, and long dry spells are common, especially along the coast.
What should I pack for Bulgaria in September?
Pack summer clothing for daytime, plus a light sweater or jacket for cooler evenings. Swimwear is essential for the coast. Comfortable walking shoes are advisable for city exploration, and an umbrella or light raincoat handles the occasional shower.
How does September compare to other autumn months?
September is significantly warmer and drier than October. Weather in Bulgaria in September and October differs by about 6–8°C in average highs. For reference, weather in Bulgaria in May is cooler (20–24°C), while weather in Bulgaria in July peaks at 30–35°C, making September a milder alternative.
Sources
For UK comparisons, see our UK weather hub or check the 10 day weather forecast UK. Regional pages like Birmingham Weather and Glasgow Weather also provide local data.