Last updated: August 21, 2025
September in Smolyan, Bulgaria offers a delightful transition into autumn, with temperatures ranging from a pleasant 1°C (34°F) at night to a maximum of 29°C (85°F) during the day. The average temperature settles at a comfortable 16°C (60°F), making it an ideal time for outdoor activities. While this month sees about 50 mm (2.0 in) of precipitation spread over 6 days, the 57% humidity keeps the air crisp and refreshing. Nature lovers and adventure enthusiasts alike will find the cool, invigorating weather perfect for exploring the beauty of this picturesque region.
As September unfolds in Smolyan, Bulgaria, temperatures begin to transition from the warmth of summer to the cooler embrace of autumn. With a minimum temperature of 1°C (34°F), the nights start to hint at the chill to come. However, daytime revelers can still enjoy a pleasant average of 16°C (60°F) and a delightful maximum of 29°C (85°F), making it an ideal month for outdoor activities and exploring the stunning surrounding landscapes. This shift marks a notable decrease from the peak summer temperatures, yet the lingering warmth ensures that September remains a favored time for visitors and locals alike. The gradual cool-down is a gentle reminder of the changing seasons, offering a beautiful blend of warm days and crisp evenings.
September in Smolyan, Bulgaria, brings a notable shift in precipitation patterns, as the month averages 50 mm (2.0 in) of rainfall over just 6 days. This marks a significant decrease from the summer months, particularly June, which boasts the highest precipitation at 212 mm (8.3 in) across 23 days. Following the dry spell of August, where only 39 mm (1.6 in) fell over 9 days, September's rainfall is a reminder of the approaching autumn. As the days shorten and temperatures begin to dip, this moderate rainfall helps sustain the vibrant greenery characteristic of the region, setting the stage for a picturesque fall landscape.
September in Smolyan, Bulgaria, marks a noticeable shift in humidity, sitting at 57%. This represents a slight increase from the dry summer months of July and August, where humidity levels dipped to 60% and 47%, respectively. As the season transitions into autumn, the air becomes more saturated, reminiscent of the springtime months that enjoyed much higher humidity levels. Compared to the beginning of the year, when January peaks at a consistently high 88%, September serves as a bridge between the dry warmth of summer and the damp chill that winter brings. Overall, the trend reflects a dynamic climatic rhythm, as Smolyan gracefully navigates its seasonal changes.
As summer fades into autumn in Smolyan, Bulgaria, September brings a notable shift in UV exposure, with the UV Index at 8, categorized as very high. This signals a continued need for sun protection during outdoor activities, as the burn time remains a brisk 15 minutes. The trend during the warmer months shows a peak in June with an extreme index of 11, followed by consistent highs in July and August. However, September marks the transition towards milder UV conditions, leading to a drop in intensity as we approach fall. As the weather cools, it's crucial to stay informed about the UV Index to ensure safe sun exposure. For an in-depth look at the UV levels throughout the year, visit Smolyan UV Index.
UV Risk Categories
As September rolls in, Smolyan, Bulgaria bids farewell to the long, sun-drenched days of summer, yet still delights in a generous 348 hours of sunshine. Following a peak in July, the sunlight begins to wane, but September offers a warm embrace of golden rays that linger just enough to make outdoor adventures irresistible. The month stands as a gentle transition, wedged between the lushness of August and the crispness of October, ensuring that whether you’re hiking in the mountains or enjoying the local culture, the sun remains a steadfast companion. With each hour of daylight diminishing slightly, September captures the essence of late summer, inviting both residents and visitors to savor the last warm days of the year.
As September rolls into Smolyan, Bulgaria, the chances of basking in sunny weather stand at a moderate 49%, suggesting a pleasant transition from the summer's warmth. This figure marks a slight decline from August's robust 75%, yet it still reflects a significant likelihood of sunshine compared to the earlier months of the year. With the summer's peak behind us, September strikes a balance, offering a refreshing reprieve while retaining enough sunny days for outdoor enthusiasts. As autumn approaches, residents and visitors alike can still expect a fair share of sunshine, making it an ideal time to explore the region's natural beauty before the cooler months set in.
As summer transitions into autumn, September brings a gradual shift in daylight duration in Smolyan, Bulgaria. With approximately 12 hours of daylight, the month reflects a subtle decrease from the bright, expansive days of summer—where June and July each enjoyed 15 and 14 hours of natural light. This decrease continues the trend established from the earlier months of the year; after peaking in May, daylight hours begin to wane, suggesting a gentle embrace of the upcoming fall. With each passing day in September, residents can savor the last remnants of summer before the nights extend further, echoing the seasonal rhythm of this picturesque region.
As September arrives in Smolyan, Bulgaria, the average wind speed picks up slightly, reaching 2.0 m/s (5 mph). This marks a subtle shift from the summer months, where the winds tended to be a bit gentler, averaging around 1.8 m/s (4 mph) in August. Interestingly, the autumn breeze begins to whisper through the valleys, signaling the transition into cooler seasons. Compared to the spring months, which exhibited relatively low wind speeds, September maintains a more consistent flow reminiscent of January and December's breezier conditions, often peaking at 2.3 m/s (5 mph). This gentle yet refreshing gust offers a hint of what's to come, inviting residents and visitors alike to enjoy the serene beauty of the changing landscape.
Weather in Smolyan varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Smolyan, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present starkly contrasting weather conditions. In September, temperatures range from a mild 1°C (34°F) at night to a warm 29°C (85°F) during the day, with average temperatures around 16°C (60°F). The month experiences about 50 mm (2.0 in) of precipitation over approximately 6 days, with humidity hovering around 57%. In contrast, January delivers a much colder climate, with temperatures plummeting as low as -18°C (0°F) and averaging at -1°C (31°F). The month also sees more precipitation, totaling 84 mm (3.3 in) over about 8 days, with humidity significantly higher at 88%. For more detailed information, you can check Smolyan weather in January.
September and February present contrasting weather patterns. In September, temperatures range from a minimum of 1°C (34°F) to a maximum of 29°C (85°F), offering a pleasant average of 16°C (60°F). With 50 mm (2.0 in) of precipitation over about 6 days, humidity sits around 57%, creating a comfortable atmosphere. In stark contrast, February is much colder, with temperatures dipping as low as -17°C (1°F) and averaging just 2°C (35°F). The maximum temperature only reaches 16°C (61°F), but the month sees increased precipitation of 69 mm (2.7 in) across approximately 9 days, while humidity rises to 83%. For a detailed look at February weather in this region, visit Smolyan weather in February.
September and March showcase strikingly different weather patterns. In September, temperatures range from a chilly 1°C (34°F) at night to a warm 29°C (85°F) during the day, with an average of 16°C (60°F). The month brings moderate rainfall of 50 mm (2.0 in) over about 6 days, accompanied by a relatively comfortable humidity level of 57%. In contrast, March experiences much colder conditions, with nighttime lows plummeting to -18°C (-1°F) and daytime highs reaching only 19°C (67°F), resulting in a much lower average temperature of 4°C (39°F). This month is also wetter, receiving 106 mm (4.2 in) of precipitation over 14 days and significantly higher humidity at 81%. For a closer look at March weather specifics, visit Smolyan weather in March.
When comparing the weather in September and April, we see distinct differences in temperature and precipitation patterns. September boasts a more moderate temperature range, with a minimum of 1°C (34°F) and a maximum of 29°C (85°F), while April experiences cooler temperatures, ranging from a minimum of -9°C (15°F) to a maximum of 22°C (72°F). Additionally, September has less precipitation, totaling 50 mm (2.0 in) over 6 days, compared to April's higher precipitation of 99 mm (3.9 in) spread over 15 days. Humidity levels also vary, with September at 57%, and April slightly higher at 71%. For more detailed information, check out Smolyan weather in April.
September and May present contrasting weather experiences. In September, temperatures typically range from a cool 1°C (34°F) at night to a warm 29°C (85°F) during the day, with an average temperature of 16°C (60°F). The month enjoys relatively low precipitation, totaling 50 mm (2.0 in) over about 6 days, and features a comfortable humidity level of 57%. In contrast, May has a slightly cooler temperature range, with a minimum of 1°C (33°F), an average of 13°C (55°F), and a maximum of 27°C (80°F). However, May is much wetter, receiving 123 mm (4.9 in) of rain over 17 days, coupled with higher humidity at 74%. For more details, you can check Smolyan weather in May.
When comparing the weather in September and June, we observe some distinct differences. September experiences a wider temperature range, with minimums dipping to 1°C (34°F) and maximums reaching up to 29°C (85°F), whereas June tends to be slightly milder overall, with minimums at 4°C (39°F) and maximums soaring to 31°C (88°F). In addition, precipitation levels in June are significantly higher at 212 mm (8.3 in) over 23 days, compared to September, which averages 50 mm (2.0 in) over just 6 days. Humidity is also slightly elevated in June at 63%, compared to September's 57%. For a more detailed look at the specific conditions during June, check out Smolyan weather in June.
In comparing the weather of September and July, we see notable differences in temperature and precipitation. September experiences a broader temperature range with a minimum of 1°C (34°F), an average of 16°C (60°F), and a maximum of 29°C (85°F). In contrast, July is warmer, with temperatures ranging from a minimum of 8°C (47°F) up to 32°C (90°F), averaging 19°C (66°F). While September has a relatively moderate precipitation level of 50 mm (2.0 in) over 6 days, July is much wetter, receiving 136 mm (5.4 in) of rain across 13 days. Humidity levels are slightly lower in September at 57% compared to July’s 60%. For more detailed information about July weather, you can visit Smolyan weather in July.
September experiences a notable shift in weather compared to August. While temperatures in August reach a high of 33°C (91°F), September sees a maximum peak of 29°C (85°F) and a more moderate average of 16°C (60°F). The minimum temperature also drops significantly from 8°C (47°F) in August to just 1°C (34°F) in September. Additionally, September has slightly higher precipitation, with 50 mm (2.0 in) over 6 days, compared to August's 39 mm (1.6 in) across 9 days. Interestingly, humidity increases from 47% in August to 57% in September, adding to the overall change in the weather pattern. For more details about August conditions, you can visit Smolyan weather in August.
In September, temperatures ranged from a chilly 1°C (34°F) at night to a warm 29°C (85°F) during the day, with an average of 16°C (60°F). The month experienced moderate precipitation of 50 mm (2.0 in) over six days, and humidity levels were at a comfortable 57%. In contrast, October brings a notable drop in average temperatures, with minimums falling to -2°C (29°F) and an average of just 10°C (51°F), peaking at 25°C (77°F). Rainfall increases to 78 mm (3.1 in) across seven days, and humidity rises significantly to 76%. For more details about the October weather in Smolyan, you can check Smolyan weather in October.
September and November present distinct weather contrasts. In September, temperatures range from a cool 1°C (34°F) to a warm 29°C (85°F), with an average around 16°C (60°F). This month typically sees about 50 mm (2.0 in) of precipitation over six days, accompanied by a moderate humidity of 57%. In comparison, November experiences colder temperatures, with lows dropping to -7°C (20°F) and an average of 6°C (43°F), while the maximum reaches 21°C (69°F). Precipitation increases to 82 mm (3.2 in) across nine days, and humidity rises significantly to 85%. The shift from September's mild fall days to November's chilly and wet conditions is quite pronounced. For more detailed weather insights, check Smolyan weather in November.
September and December present contrasting weather patterns. In September, temperatures range from a cool 1°C (34°F) at night to a warm 29°C (85°F) during the day, with an average of 16°C (60°F). The month experiences mild precipitation totaling 50 mm (2.0 in) over just 6 days, accompanied by a moderate humidity level of 57%. In stark contrast, December brings much colder temperatures, with nighttime lows plunging to -14°C (8°F) and daytime highs averaging around 13°C (55°F). This month sees significantly more precipitation, totaling 140 mm (5.5 in) across 13 days, and higher humidity levels at 87%. To learn more about specific conditions, check out Smolyan weather in December.
As September unfolds in Smolyan, visitors experience a remarkable transition from the bustling warmth of summer toward the crispness of autumn. The month boasts a comfortable average temperature, but the notable swing between highs and lows creates a dynamic climate, blending sunny days with the potential for cooler evenings. While precipitation and humidity levels indicate a gradual shift towards wetter conditions, the still pleasant atmosphere allows for an enjoyable outdoor experience. This blend of warmth and emerging autumnal changes sets September apart, making it a unique time to explore the rich landscape of the region. For a deeper dive into Smolyan's weather patterns, visit Smolyan Climate.