Last updated: August 21, 2025
In September, the weather in Stara Zagora, Bulgaria offers a delightful mix of summer warmth and the gentle onset of autumn. With maximum temperatures reaching 35°C (95°F) and an average of 20°C (68°F), residents and visitors alike can enjoy plenty of sunshine. However, the month also brings cooler nights, with temperatures dipping as low as 3°C (38°F). Rainfall is minimal, averaging 18 mm (0.7 in) over just 4 days, while humidity remains moderate at 58%, creating a comfortable atmosphere. This transitional period showcases the region's charm as summer gives way to fall, making it an ideal time to experience Stara Zagora's picturesque landscapes and vibrant culture.
As September rolls into Stara Zagora, temperatures start to reflect the transition from summer's heat to the cooler embrace of autumn. With a minimum of 3°C (38°F) and an average of 20°C (68°F), the city experiences notably milder days compared to the sweltering months of July and August, which see highs of 38°C (100°F) and 39°C (103°F). By the end of the month, thermometers can still peak at 35°C (95°F), offering plenty of warm sunshine for outdoor pursuits. This month is characterized by comfortable afternoons and refreshing evenings, signaling a vibrant shift in the seasonal palette as the landscape begins to don hues of gold and red. Transitioning from late summer warmth to the cooler tones of fall, September in Stara Zagora presents an inviting climate for both locals and visitors alike.
In September, Stara Zagora experiences a noticeable decline in precipitation, with only 18 mm (0.7 in) of rainfall recorded over just 4 days. This marks a significant drop from the wetter months preceding it, particularly June with its peak of 104 mm (4.1 in). As summer yields to autumn, September's typically dry conditions are marked by fewer rainfall days compared to the seasonal average, indicating a transition towards less humid weather. This trend reflects an overall pattern of diminishing precipitation as the year progresses, leading into the wetter months of October and November. With September's typical warmth and declining moisture, it's a month of change, offering a glimpse of the cooler, more variable conditions of the approaching fall season.
In September, Stara Zagora experiences a notable shift in humidity as it transitions from the dry summer months. After the peak of 48% in August, the humidity begins to rise again, settling at 58%. This increase reflects the onset of autumn, signaling a departure from the parched conditions of summer. The trend of rising humidity continues into the fall, with October seeing a significant leap to 78%. Overall, September serves as a bridge between the warm, dry days of summer and the cooler, more humid conditions of the approaching winter, highlighting the dynamic weather patterns characteristic of this Bulgarian city.
As September arrives in Stara Zagora, Bulgaria, the UV Index begins to decrease from its summertime peaks, settling at a moderate 7, categorizing the exposure as high. This shift is a welcome transition from the intense summer months, where the UV Index typically soared to 9 or 10, demanding cautious outdoor activities. In September, the recommended burn time extends back to 25 minutes, offering a safer window to enjoy the outdoors. This trend of gradually declining UV levels continues into October, making it an ideal time for outdoor enthusiasts to take advantage of the pleasant weather while being mindful of sun exposure. For more detailed information, visit the Stara Zagora UV Index.
UV Risk Categories
September in Stara Zagora, Bulgaria, continues the trend of abundant sunshine, offering 342 hours of radiant light. This month signals a shift as the summer's peak warmth begins to wane, yet it still showcases a generous amount of sun compared to the cooler months ahead. Following the sun-drenched days of July and August, which saw over 400 hours of sunshine, September retains a vibrant charm, making it an ideal time for outdoor adventures and leisurely strolls. As daylight diminishes into October’s 289 hours, September serves as a beautiful reminder of the summer’s lingering glow before the autumn hues set in.
As September rolls into Stara Zagora, the likelihood of sunny weather begins to shift, offering a refreshing balance after the summer months. With a 54% chance of sunshine, this charming city enjoys a notable increase in clear days compared to the earlier months like January and October, which often see only 28% and 38% chances, respectively. Interestingly, September's sunny disposition stands out amidst the gradual decline of clear weather leading into autumn. This transition hints at a season of vibrant colors and pleasant temperatures, making it an ideal time for outdoor explorations under the blissful sun.
As summer fades into autumn, September in Stara Zagora, Bulgaria, offers a graceful transition with approximately 12 hours of daylight. This month marks a gentle decline from June’s peak of 15 hours, reflecting nature’s rhythmic shift. The gradual reduction in daylight from the vibrant 14 hours in May to a cozy 12 hours invites longer evenings and a cooler ambiance, setting the stage for autumn activities. As daylight continues to wane towards October, the days become shorter, yet September stands as a reminder of summer’s warmth while hinting at the charming coziness of the upcoming fall.
As September rolls into Stara Zagora, Bulgaria, the gentle breeze brings a refreshing shift before autumn settles in. With an average wind speed of 2.1 m/s (5 mph), the month mirrors the calm winds of late spring and early summer, showcasing a slight increase from the previous months. While the summer peaks hint at occasional gusts, September maintains a consistent breeze, reminiscent of the wind patterns experienced throughout the year. This subtle yet persistent airflow not only keeps the air crisp but also underscores the region's characteristic tranquility, inviting both locals and visitors to enjoy the scenic beauty of the changing seasons.
Weather in Stara Zagora varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Stara Zagora, focusing on differences in temperature, rainfall, humidity, and UV levels.
When comparing the weather in September and January, there’s a stark contrast in temperatures and overall conditions. In September, temperatures range from a mild minimum of 3°C (38°F) to a warm maximum of 35°C (95°F), with an average around 20°C (68°F). The humidity sits at a comfortable 58%, and there is relatively little precipitation, totaling just 18 mm (0.7 in) over about four days. In contrast, January brings much colder weather, with temperatures plummeting to a minimum of -15°C (6°F) and averaging only 1°C (35°F); the maximum reaches only 15°C (60°F). This month sees a substantial increase in precipitation, measuring 50 mm (2.0 in) across eight days, alongside a much higher humidity level of 88%. For more specific details, you can check Stara Zagora weather in January.
September and February present dramatically different weather conditions. In September, temperatures range from a minimum of 3°C (38°F) to a maximum of 35°C (95°F), with an average around 20°C (68°F). The month sees relatively low precipitation at 18 mm (0.7 in) over just four days, and humidity levels are moderate at 58%. In stark contrast, February experiences much colder conditions, with temperatures dipping as low as -10°C (14°F), peaking at 19°C (66°F) and averaging only 4°C (40°F). This month is also wetter, recording 48 mm (1.9 in) of precipitation over eight days, with a significantly higher humidity of 84%. These differences illustrate the transition from late summer warmth to the chill of winter. For more details, check out Stara Zagora weather in February.
September and March present stark contrasts in weather. September boasts a mild average temperature of 20°C (68°F), with maximums reaching up to 35°C (95°F) and minimal precipitation of only 18 mm (0.7 in) over about 4 days, providing a relatively dry experience at 58% humidity. In contrast, March is much cooler, with an average temperature of 7°C (44°F) and maximums of 22°C (72°F). It also sees significantly more rainfall, totaling 69 mm (2.7 in) across 11 days, accompanied by higher humidity at 81%. For a more detailed look at March's weather specifics, you can check Stara Zagora weather in March.
In comparing the weather between September and April, one can see significant variations in temperature and precipitation. September tends to be warmer, with average temperatures reaching around 20°C (68°F) and maximums soaring to 35°C (95°F). In contrast, April's average is much cooler at 11°C (53°F), with maximums peaking at 27°C (81°F). Additionally, April experiences more precipitation, totaling 47 mm (1.9 in) over 9 days, compared to September's lighter rainfall of 18 mm (0.7 in) across just 4 days. Furthermore, April's humidity is slightly higher at 70%, while September holds a more comfortable level of 58%. For more detailed information, you can check Stara Zagora weather in April.
In comparing the weather of September and May, we can see distinct differences in temperature and precipitation. September typically experiences warmer temperatures, with a minimum of 3°C and a maximum reaching up to 35°C, leading to an average of 20°C. In contrast, May starts slightly warmer with a minimum of 4°C and a maximum of 32°C, resulting in a lower average of 17°C.
However, May is characterized by significantly higher precipitation, receiving about 66 mm over 12 days, compared to September's 18 mm over just 4 days. Additionally, May has a higher humidity level at 72% compared to September's 58%. For more detailed insights on May weather, check out Stara Zagora weather in May.
September and June exhibit notable differences in weather conditions. September generally experiences a wider temperature range with minimums dropping to 3°C (38°F), an average of 20°C (68°F), and maximums reaching up to 35°C (95°F). In contrast, June starts warmer, with minimum temperatures around 8°C (46°F), an average of 21°C (69°F), and peaks at 36°C (96°F). Moreover, September has significantly less precipitation, averaging only 18 mm (0.7 in) over just four days, while June sees a much wetter climate, with 104 mm (4.1 in) of rain spread across 16 days. The humidity is also slightly higher in June at 66%, compared to September's 58%. For more detailed insights, you can refer to Stara Zagora weather in June.
When comparing the weather in September and July, it’s evident that July tends to be warmer and wetter. July boasts an average temperature of 23°C (74°F), with maximums reaching up to 38°C (100°F), while September’s average is cooler at 20°C (68°F), peaking at 35°C (95°F). Additionally, July experiences significantly more precipitation, recording 66 mm (2.6 in) over 10 days, compared to September's 18 mm (0.7 in) spread over only 4 days. Humidity levels are slightly higher in July at 62%, contrasted with September's 58%. For more detailed insights, you can check Stara Zagora weather in July.
In September, the weather begins to cool down from the heat of summer, with minimum temperatures dropping to 3°C (38°F) and an average of 20°C (68°F), compared to August's warmer minimum of 12°C (53°F) and an average of 24°C (76°F). The maximum temperatures in September reach up to 35°C (95°F), slightly lower than August’s peak of 39°C (103°F). Precipitation is also less frequent in September, with only 18 mm (0.7 in) over 4 days, whereas August experiences 23 mm (0.9 in) over 6 days. Additionally, September has a higher humidity level at 58% compared to August's more comfortable 48%. For more details on the August weather, you can check Stara Zagora weather in August.
September typically features warmer temperatures, with an average of 20°C (68°F) and highs reaching up to 35°C (95°F). The month experiences relatively low precipitation of 18 mm (0.7 in) over about 4 days, contributing to a moderate humidity level of 58%. In contrast, October sees a notable drop in temperatures, averaging around 14°C (57°F), with minimums dipping to 1°C (34°F) and maximums reaching 32°C (90°F). Precipitation increases significantly during October, totaling 70 mm (2.7 in) spread across approximately 7 days, leading to higher humidity levels at 78%. For more detailed information, visit Stara Zagora weather in October.
In September, the weather is typically warm with average temperatures around 20°C (68°F), reaching highs of up to 35°C (95°F). This month sees relatively low precipitation, with only 18 mm (0.7 in) over about 4 days and a comfortable humidity level of 58%. In contrast, November brings a marked drop in temperature, with average highs of just 8°C (47°F) and lows plummeting to -3°C (26°F). Additionally, November experiences significantly more rainfall, totaling 60 mm (2.4 in) over 8 days, and the humidity rises to 85%, making the weather feel much colder and damp. For more detailed insights, check out Stara Zagora weather in November.
September and December present strikingly different weather patterns. In September, temperatures range from a pleasant 3°C (38°F) at night to a warm 35°C (95°F) during the day, with an average of 20°C (68°F). The month is relatively dry, with only 18 mm (0.7 in) of precipitation occurring over just four days, and humidity sits at a comfortable 58%. In contrast, December brings much colder temperatures, with a minimum of -8°C (18°F) and a maximum of 17°C (63°F), averaging just 4°C (40°F). This month is characterized by significantly higher precipitation levels at 86 mm (3.4 in) spread across 11 days, alongside increased humidity at 87%. For more specific insights on December weather patterns, you can visit Stara Zagora weather in December.
As September unfolds in Stara Zagora, the weather showcases a delightful transition from the sweltering heat of summer to a more moderate climate. With warm days averaging around 20°C, this month offers a pleasant break, inviting residents and visitors alike to enjoy the outdoors without the intense summer sun. Unlike the sunny months that precede it, September typically brings about a few rainy days, contributing to a lush environment while maintaining a comfortable humidity level of 58%. This combination of cooler temperatures and sporadic rain not only refreshes the landscape but also signifies the approach of autumn. To delve deeper into the monthly nuances of Stara Zagora's weather, explore Stara Zagora Climate.