Weather In Bulgaria In September
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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Leeds Wire weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
September in Bulgaria is warm and mostly sunny, with daytime highs in the mid‑20s Celsius along the Black Sea coast and slightly cooler inland. It’s a solid month for beach holidays, especially at Sunny Beach, with low humidity and occasional showers.
What temperatures can you expect in September?
Daytime highs average 24–28°C in coastal resorts like Sunny Beach and 20–24°C in inland cities such as Sofia. Sea temperatures remain pleasant at around 22–24°C, ideal for swimming. Evenings cool down to 12–16°C, so a light jacket is useful.
How does September compare with other months?
September is drier than May and warmer than October. The live forecast above shows the immediate outlook, but historically this month offers a sweet spot: less crowded than July and August, yet with similar sunshine hours. If you’re comparing weather in Bulgaria in September to weather in Bulgaria in June or weather in Bulgaria in July, September typically sees fewer thunderstorms and lower humidity. For those considering later trips, weather in Bulgaria in September and October differs mainly in October’s cooler nights and shorter days.
Is September a good time to visit Bulgaria?
Yes. It offers warm beach weather without the peak‑season crowds. The combination of sunshine, warm sea and affordable accommodation makes it one of the best months for a holiday.
What should I pack for Bulgaria in September?
Light clothing for daytime, a jumper or jacket for cooler evenings, sunscreen, and a light raincoat. Comfortable walking shoes are useful for exploring historic towns.
How does September compare to weather in Bulgaria in October?
September is 3–5°C warmer than October, with more sunshine and less rain. October is still mild but the beach season winds down, and many coastal resorts close by mid‑month.
Sources
For the latest updates across the UK, visit our weather hub or check the 10‑day forecast.
