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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Playlister UK weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Check the live forecast above for the latest conditions in Sunny Beach, Bulgaria. For a relaxing beach holiday, aim for June to September when sea temperatures are warm and rainfall is low, though spring and autumn can also offer pleasant days with fewer crowds.
When is the best time to visit Sunny Beach for guaranteed sunshine?
Late June through early September delivers the most reliable sunny beach weather, with daytime highs averaging 27–30°C and sea temperatures peaking around 25°C. July and August are peak season, offering long, bright days ideal for swimming and sunbathing.
- Summer (June–August) sees 10–12 hours of sunshine daily and very little rain.
- Late May and early June are warmer than spring, with fewer tourists and still plenty of sun.
- September remains warm enough for swimming, though evenings cool down more quickly.
- For the lowest rainfall and highest UV, book between mid-July and mid-August.
How does Sunny Beach weather change month by month?
Sunny beach weather by month shows a clear shift from mild spring to hot summer and then a gradual cooling through autumn. If you’re after the hottest days, July and August are your best bet; if you prefer moderate heat, May and September offer comfortable conditions.
- May: average high 22°C, sea around 18°C, increasing sunshine.
- June: high 27°C, sea 22°C, long days and low rain.
- July & August: highs 29–30°C, sea 24–25°C, almost no rain.
- September: high 26°C, sea 23°C, still plenty of sunshine but more chance of showers.
Frequently Asked Questions
Is Sunny Beach windy?
Sunny Beach is known for light breezes rather than strong winds. On occasion, a moderate sea breeze picks up in the afternoon, but it rarely disrupts beach days. The coast is sheltered, so wind speeds stay comfortable for sunbathing and swimming.
What water temperature can I expect in May?
In May, the Black Sea at Sunny Beach warms to around 18°C – still cool for many swimmers. By late May early June it reaches 20–22°C, which most people find pleasant for a dip. The warmest water is in August at 24–26°C.
Are 30-day forecasts reliable for Sunny Beach?
Long-range forecasts for sunny beach weather 30 days ahead give a general trend, not exact daily conditions. Use them to spot heatwaves or cooler spells, but check the 10-day and 14-day outlooks for more accurate planning. The 21 day weather forecast sunny beach bulgaria is best treated as a guide.
Sources
For more UK-specific forecasts, explore our UK weather hub or check the 10 Day Weather Forecast UK. If you’re comparing conditions at home, see Birmingham Weather, Glasgow Weather, or Bristol Weather.