Last updated: August 21, 2025
In September, Plovdiv, Bulgaria, experiences a dynamic climate perfect for enjoying the transition from summer to autumn. With maximum temperatures soaring up to 37°C (99°F), and an average of 21°C (69°F), visitors can revel in warm sunshine. However, the month also presents a refreshing contrast, where temperatures can dip as low as 2°C (37°F) at night. Rainfall is minimal, averaging just 17 mm (0.7 in) over a couple of days, while the humidity hovers around 59%, providing a pleasant balance. This month is ideal for outdoor activities, allowing both locals and tourists to soak in the stunning landscapes and rich history of this vibrant city.
In September, Plovdiv, Bulgaria, experiences a delightful transition as summer gradually yields to autumn. With temperatures ranging from a comfortable 2°C (37°F) at night to a warm 37°C (99°F) during the day, the month offers a pleasing average of 21°C (69°F). This makes it an ideal time for outdoor activities, as the heat of the peak summer months begins to recede. Visitors can enjoy cooler evenings without the sweltering daytime heat that characterizes August, while still basking in plenty of sunshine. The gradual drop in temperatures heralds the arrival of autumn, creating a charming atmosphere for exploring Plovdiv's rich history and vibrant culture.
September in Plovdiv, Bulgaria, marks a significant dip in precipitation, with only 17 mm (0.7 in) of rainfall spread over just 2 days. This trend illustrates the transition from the wet summer months to the drier fall season, as rainfall peaks in June with 77 mm (3.0 in) before steadily declining into late summer and early autumn. The month is characterized by clearer skies and warmer temperatures, making it a pleasant time for outdoor activities. In contrast to the wetter months preceding it, September's limited precipitation highlights the gradual shift in the region's climate, setting the stage for the rainfall increases that occur again as winter approaches.
In September, Plovdiv experiences a noticeable shift in humidity, with levels averaging around 59%. This period marks a transition from the summer months, where humidity dips to a remarkably low 50% in August, toward the more humid fall season. As the months progress into October, humidity rises sharply to 79%, signaling the onset of the wetter season. Overall, the trend illustrates how Plovdiv's climate shifts from higher humidity levels in winter—peaking at 89% in January—down to the relatively drier, summer months before returning to increased moisture in the fall. This cyclical pattern creates a diverse and dynamic climate experience for both residents and visitors alike.
As September rolls into Plovdiv, Bulgaria, residents can expect a moderate UV Index of 7, which falls into the high exposure category. This marks a noteworthy decrease from the peak summer months, providing a brief respite from the intense sun. With a burn time of approximately 25 minutes, it’s essential to remain vigilant about sun protection during this time. The UV Index is gradually tapering from the previous months’ highs, indicating the seasonal shift towards cooler days, while still reminding everyone to stay cautious. For more insights on UV levels throughout the year, check out Plovdiv UV Index.
UV Risk Categories
As summer winds down, September in Plovdiv, Bulgaria, still basks in the glow of 344 hours of sunshine, ensuring a warm and inviting atmosphere. The sunshine hours reflect a gradual decline from the peak of 427 hours in July, transitioning the vibrant energy of summer into the crispness of autumn. This month showcases a delightful balance, retaining enough light for leisurely strolls through its historic streets while hinting at the approaching cooler days. While the sunshine diminishes, the golden hues of early fall create a picturesque backdrop, inviting locals and visitors alike to celebrate the season's beauty.
September in Plovdiv, Bulgaria, brings a 54% chance of sunny weather, making it a delightful month for outdoor activities. This figure reflects a notable decline from the peak summer months of July and August, which boast impressive sunshine probabilities of 80% and 77%, respectively. As the summer heat wanes, September offers an inviting balance of warm, sunny days and cooler evenings, appealing to those looking to experience the city's vibrant culture and picturesque landscapes. With a greater likelihood of sun than the months that follow—like October at 41%—September stands out as an ideal time to relish Plovdiv's charm before autumn fully sets in.
As September rolls in, Plovdiv, Bulgaria welcomes a gentle transition in daylight hours, with the sun gracing the skies for approximately 12 hours each day. This marks a slight decrease from the vibrant summer months of June and July, where daylight peaked at 15 hours and 14 hours respectively. In September, the days shorten, hinting at the impending autumn, yet still providing plenty of light for outdoor activities and exploration. This gradual shift continues into October, where daylight decreases further to 11 hours. Overall, September serves as a delightful bridge between the long, sun-drenched days of summer and the cozy ambiance of fall, allowing residents and visitors alike to enjoy the last warm rays of the season.
As September rolls into Plovdiv, the gentle breezes of late summer linger, bringing an average wind speed of 1.9 m/s (4 mph). This slight shift from August’s 1.8 m/s indicates a subtle increase in air movement, reflecting the seasonal transition towards autumn. Notably, throughout the year, wind speeds in Plovdiv have remained relatively stable, fluctuating between 1.8 m/s to 2.3 m/s. However, September’s calm weather is a precursor to the crisp, cooler winds of October, setting the stage for the invigorating gusts that herald the changing season.
Weather in Plovdiv varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Plovdiv, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January in Plovdiv present starkly contrasting weather conditions. In September, temperatures fluctuate from a mild minimum of 2°C (37°F) to a warm average of 21°C (69°F), peaking at a scorching 37°C (99°F). The month is relatively dry, with only 17 mm (0.7 in) of precipitation over 2 days and a comfortable humidity level of 59%. In contrast, January is marked by much colder temperatures, with a minimum of -20°C (-5°F), an average of just 2°C (35°F), and a maximum of 16°C (61°F). This month experiences significantly more precipitation, totaling 41 mm (1.6 in) over 7 days, coupled with a higher humidity of 89%. For more detailed information on the winter conditions, you can check Plovdiv weather in January.
September and February present strikingly different weather patterns. In September, temperatures can vary significantly, ranging from a cool 2°C (37°F) at night to a scorching 37°C (99°F) during the day, with an average temperature of 21°C (69°F). Precipitation is minimal, with only 17 mm (0.7 in) expected over just two days. Humidity levels sit at a comfortable 59%, making it a pleasant month overall.
In contrast, February is much cooler, characterized by temperatures that drop to a minimum of -13°C (8°F) and peak at 20°C (69°F), with an average of just 5°C (41°F). This month is also wetter, receiving 44 mm (1.7 in) of precipitation spread over eight days, resulting in a higher humidity of 85%. For more detailed information, you can check out Plovdiv weather in February.
September and March present stark contrasts in weather. September boasts warmer temperatures, with a minimum of 2°C (37°F), an average of 21°C (69°F), and a maximum of 37°C (99°F), alongside relatively low precipitation of 17 mm (0.7 in) over just 2 days, resulting in a comfortable humidity level of 59%. In contrast, March sees much colder conditions, featuring a minimum temperature of -18°C (0°F) and an average of 8°C (46°F), peaking at 24°C (76°F). Precipitation is significantly higher at 64 mm (2.5 in), distributed over 11 days, and the humidity rises to 83%. For a detailed overview of March weather, visit Plovdiv weather in March.
When comparing the weather in September and April, significant differences emerge. September experiences a broader temperature range, with minimums around 2°C (37°F) and maximums soaring up to 37°C (99°F), leading to an average temperature of 21°C (69°F). In contrast, April is cooler overall, with temperatures ranging from a chilly -3°C (27°F) to a pleasant maximum of 29°C (84°F) and an average of only 12°C (55°F). Precipitation is also more prevalent in April, with 49 mm (1.9 in) over nine days compared to September's 17 mm (0.7 in) over just two days. Additionally, humidity is higher in April at 71%, compared to 59% in September. For more detailed information on April's conditions, check out Plovdiv weather in April.
September typically offers a warm climate with an average temperature of 21°C (69°F) and a maximum that can soar up to 37°C (99°F). This month sees relatively low precipitation, averaging just 17 mm (0.7 in) over about 2 days, and the humidity hovers around 59%. In contrast, May features a slightly cooler average temperature of 18°C (65°F), with lows of 4°C (40°F) and highs reaching 34°C (93°F). However, it experiences greater moisture, with precipitation totaling 51 mm (2.0 in) spread over 11 days, leading to higher humidity levels at 73%. For more detailed insights into May's climate, you can visit Plovdiv weather in May.
In comparing the weather of September and June, September tends to be cooler overall, with average temperatures ranging from a minimum of 2°C (37°F) to a maximum of 37°C (99°F), while June features a milder range with minimums at 9°C (49°F) and maximums reaching up to 39°C (102°F). June experiences significantly more rainfall, with 77 mm (3.0 in) over 12 days, compared to just 17 mm (0.7 in) across 2 days in September. Additionally, humidity levels are slightly higher in June at 67%, compared to September's 59%. For more detailed insights, you can visit Plovdiv weather in June.
In comparing the weather of September and July, September features a broader range of temperatures, with a minimum of 2°C (37°F) and a maximum of 37°C (99°F), resulting in an average temperature of 21°C (69°F). In contrast, July maintains consistently warmer temperatures with a minimum of 12°C (54°F), an average of 25°C (77°F), and peaks at 40°C (105°F). Additionally, September experiences significantly less precipitation, with only 17 mm (0.7 in) over just 2 days, while July sees much heavier rainfall at 47 mm (1.8 in) over 7 days. Humidity levels are also higher in July at 68%, compared to September's 59%. For more details on July’s weather, you can check Plovdiv weather in July.
In August, the weather is typically warmer compared to September, with average temperatures reaching 25°C (78°F) and maximums soaring up to 42°C (107°F). The month also experiences higher precipitation levels, totaling 28 mm (1.1 in) over four days, and a lower humidity of 50%. In contrast, September sees a significant drop in both temperature and humidity, with an average of 21°C (69°F), maximums capping at 37°C (99°F), and only 17 mm (0.7 in) of rain over just two days. For more details, check out Plovdiv weather in August.
September typically offers a warmer climate with average temperatures around 21°C (69°F) and a maximum reaching up to 37°C (99°F). It experiences less precipitation, averaging 17 mm (0.7 in) over just 2 days and maintaining a humidity level of 59%. In contrast, October ushers in cooler temperatures, with an average of 14°C (57°F) and a minimum dropping to 0°C (33°F). The month is marked by increased rainfall, totaling 51 mm (2.0 in) over 5 days, and higher humidity at 79%. This shift highlights the transition from the warm late summer to the more settled autumn climate. For more detailed information, you can check Plovdiv weather in October.
September and November showcase a striking contrast in weather patterns. September boasts a pleasant average temperature of 21°C (69°F), with highs reaching up to 37°C (99°F) and only a slight chance of precipitation, totaling just 17 mm (0.7 in) over two days. In contrast, November brings cooler conditions, with temperatures dropping to an average of 9°C (48°F) and nighttime lows dipping to -5°C (23°F). This month also experiences significantly higher precipitation levels, totaling 54 mm (2.1 in) over seven days, along with increased humidity at 87%. For more details, check out Plovdiv weather in November.
September and December showcase stark contrasts in weather conditions. September typically enjoys warmer temperatures with an average of 21°C (69°F), peaking at a sweltering 37°C (99°F), while December's temperatures drop significantly, averaging just 4°C (40°F) and reaching a maximum of 18°C (65°F). Additionally, September experiences limited rainfall, averaging only 17 mm over just 2 days, compared to December, which sees substantially more precipitation at 60 mm across 9 days. Humidity levels also rise notably in December, reaching 89%, compared to September's 59%. For more details on December conditions in Plovdiv, you can visit Plovdiv weather in December.
As summer draws to a close, September in Plovdiv offers a delightful transition with mild temperatures and relatively low humidity, creating a comfortable atmosphere for outdoor activities. Compared to the peak summer months, the average temperature of 21°C allows for pleasant evenings, while the maximum and minimum temperatures showcase a more forgiving range. With just 17 mm of precipitation over a couple of days, this month remains largely dry, making it an ideal time to explore the city's rich history and culture. For a deeper understanding of the changing weather patterns throughout the year, check out Plovdiv Climate.