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Saints Constantine and Helena in August sees high daytime temperatures of 27°C (81°F) and nighttime lows of 21°C (70°F). With just 35 mm (1.4 in) of rainfall on average, it's the driest month of the year.
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 Saints Constantine and Helena.
Pick a month to see the average temperature, rainfall and sunshine in Saints Constantine and Helena - and find the best time to visit.
49-year average (1976-2025)
Based on our historical records, temperatures in Saints Constantine and Helena typically stay consistent throughout August, with daily highs averaging around 27°C (81°F). Nights are pleasant, with lows typically ranging from 16°C (61°F) to 18°C (64°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 Saints Constantine and Helena spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
The extremes listed below come from historical weather data collected in Saints Constantine and Helena from 1997 through 2026.
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 temperatures in August make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Pack a light rain jacket or compact umbrella for occasional showers. The water temperature sits at about 25°C (77°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Saints Constantine and Helena climate overview or explore weather in Bulgaria.
Where to go in August - average daytime high across popular destinations.
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