Smolyan Weather in September
September in Smolyan averages 21°C (70°F) during the day and 10°C (50°F) at night. With just 68 mm (2.7 in) of rainfall on average, it doesn't get much drier than this.
Rainfall in Smolyan in September
Known for its least rainfall, this month is the best of the year for people who like to spend time outdoors. The climate data from previous years indicates about 5 days of rain, averaging 68 mm (2.7 in) for the month. When rain does fall this month, it tends to come down hard. The low number of rain days makes each shower more significant.
Temperature in Smolyan in September
Smolyan in September is worth a visit. The temperature is perfect, with 21°C (70°F) during the day and 10°C (50°F) at night. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. At 10°C (50°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.
Sunshine in Smolyan in September
The month enjoys around 228 hours of sunshine, creating mostly sunny days with good weather conditions.If your ideal day consists of dry skies and pleasant temperatures, August and September typically offer the best circumstances for Smolyan.
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 Smolyan's climate page.
Smolyan Temperature in September
Min Temperature
10°C (50°F)
Max Temperature
21°C (70°F)
Chance of Rain
17%
Precipitation
68 mm (2.7 in)
Rainy days
5 days
Humidity
48% *
Sunshine
228 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Smolyan typically drop from around 27°C (81°F) at the start of September to approximately 23°C (73°F) by the end. Nights are cool, with lows typically ranging from 9°C (48°F) to 12°C (54°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Smolyan in September
Browse day-by-day weather records for Smolyan spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Smolyan historical weather extremes in September
The extremes listed below come from historical weather data collected in Smolyan from 1976 through 2025.
- The warmest day in September was on September 15, 1987, with a maximum of 36°C (97°F).
- On September 28, 1977, Smolyan saw its coldest September day with temperatures maxing out at 6°C (43°F).
- The lowest overnight temperature recorded in September was -3°C (27°F) (September 29, 1977).
Best Places in Bulgaria in September
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
pleasant
tolerable
unpleasant
poor
What to Wear in Smolyan in September
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. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Smolyan in September
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 Smolyan's climate page.
Temperature Rainfall Sunshine Humidity
See the full Smolyan climate overview or explore weather in Bulgaria.
