Last updated: August 21, 2025
Troyan, Bulgaria, in September offers a dynamic climate with temperatures ranging from a chilly 0°C (31°F) at night to a warm 34°C (93°F) during the day, averaging around 17°C (64°F). This transitional month experiences moderate humidity at 59% and sees approximately 39 mm (1.5 in) of precipitation over five days, making it a balance of refreshing coolness and occasional rain. Visitors can expect a mix of sunny days and cloudy intervals, perfect for enjoying the stunning natural beauty of the region.
In Troyan, Bulgaria, September marks a delightful transition into fall, with temperatures offering a pleasant reprieve from the summer heat. The month begins with minimums around 0°C (31°F), hinting at the cooling days ahead, while average temperatures hover at a comfortable 17°C (64°F). As summer lingers, the daytime highs can still reach an invigorating 34°C (93°F), creating a perfect backdrop for outdoor adventures. Interestingly, this blend of warmth and chill illustrates a gradual downward trend as the fall approaches, much like the vibrant foliage that begins to emerge. Whether soaking in the last rays of warmth or enjoying the crisp evenings, September in Troyan presents a charming invitation to savor nature’s changing palette.
As summer transitions into autumn, September in Troyan, Bulgaria, brings a noticeable decrease in precipitation, with only 39 mm (1.5 in) of rainfall spread over just 5 days. This marks a significant drop from the lush, wet months of June and July, which received 143 mm (5.6 in) and 139 mm (5.5 in), respectively. The drier conditions of September create a pleasant respite, setting the stage for harvest season. With fewer rainy days and diminished rainfall, outdoor activities are more enjoyable, and the landscape begins to shift into its autumn hues. This trend indicates a gradual drying trend as the region prepares for the wetter months ahead in October and November.
In September, Troyan, Bulgaria, experiences a noticeable shift in humidity compared to the sweltering summer months, with levels averaging around 59%. This decrease follows the stark contrast of August's 50%, marking a transition as the region begins to embrace the cooler fall weather. While humidity levels remain relatively elevated compared to the spring months, which saw a high of 73% in May, September's environment is characterized by a more comfortable balance. This slight increase from late summer suggests a gradual return to the higher humidity levels typical of autumn — a trend that culminates in October's rise back to 79%. As the season progresses, residents of Troyan can expect the crispness of autumn air to be accompanied by the familiar embrace of higher humidity in the coming months.
As September rolls into Troyan, Bulgaria, the UV Index drops to 7, indicating a high exposure category, with a burn time of 25 minutes. This marks a slight decline from the intense summer months, where July and August reached UV levels of 9. However, it's still crucial to remain vigilant, as the September sun can be quite potent. Comparatively, May and June saw even higher UV levels of 8 and 10, urging sun protection for just 15 minutes. As the year transitions into cooler months, the UV Index will gradually decrease, with October expected to sit at 5. For those planning outdoor activities in September, it's a good idea to check the Troyan UV Index for a safe and enjoyable experience.
UV Risk Categories
As the summer months draw to a close, September in Troyan, Bulgaria continues to bask in a generous 346 hours of sunshine. This marks a slight decline from the peak of July, which boasts an impressive 428 hours, but still offers a vibrant continuation of summer's warmth. Following the sun-drenched days of August, with 405 hours, September’s golden hues serve as a gentle reminder of the fading season, providing a charming backdrop for outdoor activities and leisurely strolls. While the transition into autumn sees decreasing daylight, the lingering sunlight invites both locals and visitors to savor the beauty of nature before the cooler months set in.
In Troyan, Bulgaria, September offers a pleasant 55% chance of sunny weather, marking a transition as summer gradually gives way to autumn. Following the peak sunshine months of July and August, which boast impressive probabilities of 76% and 74% respectively, September retains a notable share of bright days, outpacing the earlier months of the year, such as April and May. This favorable statistic highlights September as an optimal time for outdoor activities, complemented by milder temperatures that enhance the enjoyment of the lingering sunshine before the cooler fall sets in. As such, September stands out as a wonderful opportunity to bask in the glow of late summer while enjoying the vibrant colors of a changing season.
As September arrives in Troyan, Bulgaria, the days begin to subtly shorten, offering 12 hours of daylight. This month sits comfortably between the long, sun-soaked days of summer and the more austere daylight hours of autumn. Following the peak of June, when daylight reached a generous 15 hours, September’s daylight serves as a gentle reminder of the changing seasons. The gradual decline from the vibrancy of summer, where July and August also enjoyed 14 and 13 hours of daylight respectively, reflects nature's transition towards October, when daylight is expected to drop to 10 hours. This shift captures the essence of autumn, as the landscape begins to embrace the hues of fall while still basking in the lingering warmth of late summer days.
In Troyan, Bulgaria, September ushers in a gentle breeze with an average wind speed of 1.9 m/s (4 mph). This slight uptick from the summer months reflects a transition accompanying the onset of autumn. Throughout the year, wind speeds in Troyan generally hover between 1.6 m/s and 2.3 m/s, peaking in the colder months, particularly January and December, when they reach 2.3 m/s (5 mph). The late summer lull is characterized by notably calmer days, as evidenced by August's low 1.8 m/s (4 mph) winds, providing a serene backdrop to the scenic beauty of the region. As the seasons change, the September winds subtly signal a shift, offering a tranquil ambiance perfect for enjoying the natural landscapes that surround this charming town.
Weather in Troyan varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Troyan, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, temperatures range from a cool 0°C (31°F) to a warm 34°C (93°F), with an average of 17°C (64°F), making it a pleasant month characterized by moderate humidity at 59%. The precipitation is relatively low at 39 mm (1.5 in) over about 5 days. In contrast, January presents a stark difference, featuring much colder temperatures with a minimum of -16°C (3°F) and a maximum of only 16°C (61°F), averaging around 0°C (32°F). This winter month experiences higher precipitation of 58 mm (2.3 in) over 8 days and significantly increased humidity at 89%. For more details, you can check Troyan weather in January.
The weather in September is generally warmer and more variable, with temperatures ranging from a minimum of 0°C (31°F) to a maximum of 34°C (93°F) and an average of 17°C (64°F). In contrast, February is much colder, featuring temperatures that dip as low as -12°C (11°F) with an average of 3°C (37°F) and a maximum of 19°C (66°F). Additionally, February sees more precipitation, totaling 60 mm (2.4 in) across about 10 days, compared to September's 39 mm (1.5 in) over 5 days. The humidity levels are also higher in February at 85%, compared to September's 59%. For more insights on the February climate, visit Troyan weather in February.
When comparing the weather in September and March, significant differences emerge. September is characterized by a pleasant average temperature of 17°C (64°F) and can reach a high of 34°C (93°F), while March sees a cooler average of 5°C (42°F), with maximum temperatures only reaching 23°C (74°F). Additionally, precipitation in September is relatively low at 39 mm (1.5 in) over about 5 days, compared to March, which experiences much wetter conditions with 91 mm (3.6 in) over approximately 13 days. Humidity levels are also higher in March at 83% compared to 59% in September. For a more detailed look at March weather in Troyan, you can check this link: Troyan weather in March.
September and April present contrasting weather conditions, showcasing the transition from summer to autumn. In September, temperatures range from a cool 0°C (31°F) at night to a warm 34°C (93°F) during the day, with an average of 17°C (64°F), and only about 39 mm (1.5 in) of precipitation spread over five days. In contrast, April experiences chillier nights with temperatures plummeting to -4°C (24°F), while daytime highs reach a mild 26°C (79°F), averaging around 10°C (50°F). April is also wetter, receiving 63 mm (2.5 in) of rain over ten days and higher humidity at 71%. For more details, check Troyan weather in April.
September and May exhibit notable differences in weather patterns. In September, temperatures range from a cool 0°C (31°F) at night to a warm 34°C (93°F) during the day, averaging around 17°C (64°F). The month typically experiences lower precipitation, with only 39 mm (1.5 in) spread over about 5 days and a humidity level of 59%. In contrast, May sees milder temperatures, with a minimum of 3°C (37°F) and a maximum of 30°C (86°F), averaging 15°C (60°F). However, it is marked by significantly higher rainfall, totaling 113 mm (4.5 in) over approximately 16 days, and a higher humidity percentage at 73%. For more details on the weather in May, you can visit Troyan weather in May.
September and June offer distinct weather experiences, with September generally presenting a broader range of temperatures. In September, temperatures can range from a chilly 0°C (31°F) to a warm max of 34°C (93°F), with an average of 17°C (64°F). Conversely, June has milder minimum and average temperatures of 6°C (43°F) and 19°C (66°F), while still reaching highs of 34°C (93°F). However, June is notably wetter, with total precipitation of 143 mm (5.6 in) over 17 days, compared to September's 39 mm (1.5 in) over just 5 days. The humidity is higher in June at 67%, compared to September's 59%. For more detailed insights, you can check Troyan weather in June.
When comparing the weather in September to July, it's clear that both months offer distinct experiences. In September, temperatures range from a chilly 0°C (31°F) at night to a maximum of 34°C (93°F) during the day, with an average of 17°C (64°F). This month sees lower humidity at 59% and less precipitation, totaling 39 mm (1.5 in) over about 5 days. In contrast, July features milder nighttime temperatures with a minimum of 10°C (50°F) and hotter daytime highs, peaking at 36°C (97°F) with an average of 21°C (70°F). However, July is also much wetter, experiencing 139 mm (5.5 in) of rain across 13 days and higher humidity at 68%. For a more detailed look at July weather, check out Troyan weather in July.
In August, the weather is generally warmer, with average temperatures around 22°C (71°F) and maximums reaching up to 37°C (99°F). However, September sees a notable drop in temperatures, with an average of 17°C (64°F) and maximums of 34°C (93°F). While both months experience a fair amount of precipitation, August has slightly higher rainfall at 46 mm (1.8 in) compared to September's 39 mm (1.5 in), and both months see rainfall on six and five days, respectively. Additionally, September's humidity is higher at 59% compared to August's more comfortable 50%. For a deeper look into August's weather, you can visit Troyan weather in August.
September and October present a notable shift in weather patterns. In September, temperatures range from a minimum of 0°C (31°F) to a maximum of 34°C (93°F), with a comfortable average of 17°C (64°F). The month sees relatively low precipitation at 39 mm (1.5 in) over 5 days, accompanied by moderate humidity levels of 59%. In contrast, October experiences cooler temperatures, with a minimum of -1°C (30°F) and an average of just 12°C (53°F), peaking at 30°C (86°F). Precipitation increases to 72 mm (2.8 in) spread over 8 days, and humidity rises significantly to 79%. This transition indicates a shift toward a wetter and colder climate as autumn deepens. For more details, you can visit Troyan weather in October.
In September, the weather is generally warmer, with temperatures ranging from a minimum of 0°C (31°F) to a maximum of 34°C (93°F), and an average of 17°C (64°F). The month sees relatively low precipitation of 39 mm (1.5 in) over about 5 days, accompanied by a moderate humidity level of 59%. In contrast, November experiences cooler temperatures, with a minimum of -9°C (15°F) and a maximum of 24°C (75°F), resulting in an average temperature of 7°C (44°F). This month has more precipitation, totaling 56 mm (2.2 in) across 7 days, and higher humidity at 87%. For more details on the weather in November, you can check out Troyan weather in November.
September and December present stark contrasts in weather conditions. In September, temperatures range from a mild 0°C (31°F) at night to a warm average of 17°C (64°F) during the day, peaking at 34°C (93°F). The month experiences relatively low precipitation, totaling 39 mm (1.5 in) over about 5 days, with a humidity level of 59%. In contrast, December's chill sets in with temperatures dropping to a minimum of -13°C (10°F) and only averaging around 2°C (36°F), reaching a maximum of 15°C (59°F). This month is notably wetter, with 79 mm (3.1 in) of precipitation over 12 days and a higher humidity of 89%. For more details, check out Troyan weather in December.
As September transitions into autumn, Troyan's weather offers a refreshing change from the summer heat, showcasing a comfortable average temperature and pleasant humidity levels. With maximum temperatures dipping and the chill of the season beginning to creep in, it's a perfect time for outdoor activities. Rainfall is manageable, with only a few days of precipitation, which contributes to the lush landscapes and vibrant colors that characterize this beautiful region. For those looking to plan a trip, understanding the unique climate patterns of September compared to other months can enhance your experience. For more detailed insights, check out Troyan Climate.