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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the WordPatch weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
For a UK traveller checking sunny beach weather, the best months are June through September, when daytime highs typically reach the mid-20s to low 30s °C and sea temperatures are warm enough for swimming. The live forecast above shows the current conditions, but planning around school holidays (July–August) means higher crowds and prices; May and September offer quieter, still-warm stays.
What is the weather like in Sunny Beach month by month?
May opens the season with averages around 20–24°C, ideal for exploring without the peak heat. June and July deliver consistent sun, with August being the hottest month (often exceeding 30°C). September stays pleasant, usually in the mid-20s, while October cools quickly. For a 21 day weather forecast Sunny Beach Bulgaria, late June to early September is most reliable for wall‑to‑wall sunshine.
What should I pack for Sunny Beach?
Light cotton clothing, a sun hat, high‑factor sunscreen and swimwear are essentials from May to September. Evenings can cool slightly, so a light jacket or cardigan is useful for beachfront restaurants. A reusable water bottle helps with the dry heat. If you’re checking sunny beach weather BBC or 10 day weather forecast UK equivalents, remember that Bulgarian UV levels are higher than in Britain.
Is Sunny Beach windy?
Generally not, but a light breeze often picks up in the afternoon, which can be refreshing on hot days. Strong winds are rare in summer, so you can expect calm conditions for sunbathing.
Does Sunny Beach have reliable weather for a two-week holiday?
Yes – summer patterns are very settled. A 10 day weather forecast usually stays consistent, and 21 day weather forecast Sunny Beach Bulgaria shows high pressure dominating. Occasional short showers can occur in late May or early September.
What is the water temperature like in May?
In May the Black Sea averages around 16–18°C – still cool for all‑day swimming. By early June it warms to 20–22°C, making it comfortable for most visitors. Check weather in Sunny Beach 10 days ahead for the latest sea conditions.