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With daytime temperatures of 24°C (75°F) and nighttime lows of 18°C (64°F), September in Chernomorets brings high temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 61 mm (2.4 in) falls on average.
If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit Chernomorets.
Pick a month to see the average temperature, rainfall and sunshine in Chernomorets - and find the best time to visit.
49-year average (1976-2025)
Based on our historical records, temperatures in Chernomorets typically drop from around 26°C (79°F) at the start of September to approximately 23°C (73°F) by the end. Nights are pleasant, with lows typically ranging from 13°C (55°F) to 17°C (63°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 Chernomorets spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
According to our 29 years of weather records for Chernomorets, the following extremes were recorded between 1997 and 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 September →
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).
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days. The water temperature sits at about 21°C (70°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.
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 Chernomorets climate overview or explore weather in Bulgaria.
Where to go in September - average daytime high across popular destinations.
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