Sveti Vlas Weather in August
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.
Rainfall in Sveti Vlas in August
With the least rainfall of the year, this month offers good conditions for outdoor exploration. Take advantage of the dry weather to plan your activities. Records from the past 30 years suggest around 4 days of rain, with 33 mm (1.3 in) average for the month. Rainfall tends to arrive in short, intense showers this month. Rain days are few, but the showers can be surprisingly heavy.
Temperature in Sveti Vlas in August
August is one of the better months to visit Sveti Vlas. Expect 28°C (82°F) during the day and 21°C (70°F) at night. Overall, the month follows a fairly predictable daily temperature pattern. With overnight lows of 21°C (70°F), evenings stay pleasantly warm. This is typically the warmest month of the year, so light summer clothing is a good idea.
Sunshine in Sveti Vlas in August
The city usually sees around 338 hours of sunlight, indicating many sunny days — a great month for sightseeing.
Average water temperature in August
With water at 27°C (81°F), you can expect warm, pleasant conditions for any water activity. There's no adjustment period — it feels comfortable straight away.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.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Bulgaria, check out our Sveti Vlas's climate page.
Sveti Vlas Temperature in August
Min Temperature
21°C (70°F)
Max Temperature
28°C (82°F)
Water Temperature
27°C (81°F) *
Chance of Rain
13%
Precipitation
33 mm (1.3 in)
Rainy days
4 days
Humidity
72% *
Sunshine
338 hours *
Percentage Sunshine
*
Daily Historical Temperatures
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).
Average temperatures in August
Daily Historical Precipitation
49-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in August
Historical weather for Sveti Vlas in August
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.
Sveti Vlas historical weather extremes in August
Based on 28 years of weather observations in Sveti Vlas between 1997 and 2025, these are the recorded extremes.
- The hottest August day on record in Sveti Vlas reached 37°C (99°F) (August 21, 2023).
- Sveti Vlas experienced its chilliest August day on August 13, 1997, reaching only 19°C (66°F).
- Sveti Vlas registered its coldest August night on August 31, 2017, with temperatures dropping to 12°C (54°F).
Best Places in Bulgaria in August
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
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What to Wear in Sveti Vlas in August
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.What To Do in Sveti Vlas in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Bulgaria, check out our Sveti Vlas's climate page.
Temperature Rainfall Sunshine Humidity Water Temp
See the full Sveti Vlas climate overview or explore weather in Bulgaria.
