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August in Sveti Vlas typically sees daytime highs of 28°C (82°F) and nighttime lows of 21°C (70°F). With the least rainfall of the year, it's a reliably dry month.
Our weather planner can help you find worldwide destinations with pleasant weather during this period. May, June, July, August and September typically offer the best weather for Sveti Vlas.
Pick a month to see the average temperature, rainfall and sunshine in Sveti Vlas - and find the best time to visit.
49-year average (1976-2025)
Based on our historical records, temperatures in Sveti Vlas typically stay consistent throughout August, with daily highs averaging around 28°C (82°F). Nights are pleasant, with lows typically ranging from 16°C (61°F) to 19°C (66°F).
49-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Browse day-by-day weather records for Sveti Vlas spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Based on 29 years of weather observations in Sveti Vlas between 1997 and 2026, these are the recorded extremes.
Find out more about the weather in Bulgaria and which places have the best travel conditions in this month. See all of Bulgaria in August →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Warm weather calls for comfortable, breathable clothing in August. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Some rain is possible, so pack something to handle light showers. Expect water temperatures of around 27°C (81°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity Water Temp
See the full Sveti Vlas climate overview or explore weather in Bulgaria.
Where to go in August - average daytime high across popular destinations.
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