September Weather in Blagoevgrad, Bulgaria

Last updated: August 21, 2025

September in Blagoevgrad, Bulgaria offers a delightful blend of warm temperatures and refreshing breezes. With maximum highs reaching 32°C (90°F) and an average of 18°C (64°F), the month invites outdoor exploration under mostly sunny skies. However, as the days shorten, a gentle reminder of fall approaches with minimum lows dipping to -1°C (31°F). While precipitation is limited to 28 mm (1.1 in) over three days, the humidity remains comfortable at 57%, making September an ideal time to enjoy the vibrant colors of the transitioning season in this picturesque town.

September Temperature in Blagoevgrad

September in Blagoevgrad, Bulgaria, marks a notable transition as summer gracefully yields to autumn. With minimum temperatures dipping to around -1°C (31°F) and average highs reaching 32°C (90°F), this month offers a delightful balance between warmth and the crispness of approaching fall. The average temperature settles at a comfortable 18°C (64°F), making it an ideal time for outdoor activities and enjoying the stunning natural landscapes. As the vibrant hues of autumn begin to emerge, September invites both locals and visitors to savor the mild weather before the chill of winter sets in, showcasing a time when the region's beauty is particularly enchanting.

September Weather in Blagoevgrad: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Blagoevgrad, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Blagoevgrad, September typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec323943505966707264534537
Data source: Temperature data for Blagoevgrad generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Blagoevgrad

September in Blagoevgrad, Bulgaria, ushers in the early whispers of autumn with a modest precipitation amount of 28 mm (1.1 in), marking a transition from the summer's drier spell. Only three days of rain contribute to this cumulative total, continuing a trend of decreasing rainfall that began in the heart of summer. This drop-off in precipitation from August, which experienced only 23 mm (0.9 in), suggests a shift towards drier conditions as the year progresses. As the landscape begins to change color, the sporadic showers of September serve to nourish the earth while signaling the end of the warmer months, embodying a delicate balance of moisture in a generally tranquil climate.

September Precipitation Trends in Blagoevgrad

The chart displays monthly precipitation patterns in Blagoevgrad, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Blagoevgrad, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec635593655758372328545398
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Blagoevgrad

In Blagoevgrad, Bulgaria, September marks a noticeable transition in humidity levels, settling at 57% as the summer warmth begins to wane. This slight increase from the drier summer months—where humidity dipped to 47% in August—reflects the gradual shift towards autumn. The trend showcases a steady decline in humidity from the winter peak at 88% in January, tapering off to a low in summer before starting its ascent again. As the year progresses into October, humidity surges back up to 76%, hinting at the return of the dampness characteristic of the colder months. Overall, September serves as a bridge between the arid summer and the wetter months ahead, creating a comfortable balance in Blagoevgrad's atmospheric conditions.

September Average Humidity in Blagoevgrad

This chart illustrates the average monthly humidity levels in Blagoevgrad, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Blagoevgrad is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%83%81%71%74%63%60%47%57%76%85%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Blagoevgrad

As summer transitions into autumn in Blagoevgrad, Bulgaria, September continues to experience a very high UV Index of 8, reflecting the lingering warmth of the season. Following the peak summer months of June and July, where the UV Index soared to 10, September sees a slight decline while maintaining a burn time of just 15 minutes. This trend indicates that sun safety remains crucial, as the strength of the sun still poses risks for skin damage. With a notable UV Index decrease compared to the sweltering summer, it is essential to remain vigilant, especially during midday hours. For those interested in tracking UV levels throughout the year, detailed information can be found at Blagoevgrad UV Index.

Maximum UV Index Levels in Blagoevgrad for September

The chart shows the monthly maximum UV Index (UVI) for Blagoevgrad in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Blagoevgrad typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24789101098642
Data source: Blagoevgrad September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Blagoevgrad

As summer gently gives way to autumn, September in Blagoevgrad bathes in a delightful 342 hours of sunshine, continuing the trend of glorious weather that peaks in July with an impressive 424 hours. The warm glow of the sun begins to soften, reflecting a slight decline from August’s 399 hours, yet September still stands as a radiant transition month. With days gradually shortening, this month bridges the vibrant energy of summer with the cozy charm of fall, allowing residents and visitors alike to relish the lingering warmth in their outdoor activities. Overall, the sunshine bounty in Blagoevgrad showcases a distinctive pattern of abundance from spring through summer, followed by a gradual retreat as the year edges closer to winter's embrace.

Monthly Sunshine Duration in Blagoevgrad: September Highlighted

The September sunshine duration represents the total number of hours Blagoevgrad experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec178h235h292h332h397h394h424h399h342h294h229h209h
Data source: Blagoevgrad September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Blagoevgrad During September

As summer transitions into autumn, Blagoevgrad, Bulgaria enjoys a pleasant blend of sun and warmth in September. With a 56% chance of sunny weather, the month showcases a delightful balance, reminiscent of the vibrant conditions seen in the peak summer months of July and August, which boast rates of 77% and 80% respectively. This sunny outlook signifies a continued radiance as September bridges the gap between the intense summer heat and the cooler, cloudier days of October, which dips back to 50%. Thus, if you're planning a visit, September offers a charming opportunity to soak up some sun before the chill arrives, making it a favorable time for outdoor activities amid the tail-end of summer's warmth.

Percentage of Sunny Days in September in Blagoevgrad

The chart illustrates the percentage of sunny days in Blagoevgrad throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Blagoevgrad experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec28%53%51%47%50%56%77%80%56%50%35%36%
Data source: Blagoevgrad September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Blagoevgrad in September

As summer gracefully transitions into autumn, September in Blagoevgrad, Bulgaria, offers a delightful balance of daylight, with 12 hours of sunshine illuminating the days. Following the peak of 15 hours in June, daylight gradually wanes, reflecting a natural rhythm that marks the changing seasons. While the days shorten compared to the vibrant 14 hours of July and 13 hours in August, September still embraces a generous amount of light for outdoor activities and exploration. This gentle decline continues into October with 11 hours, hinting at the approaching chill of winter, yet September's warm glow remains a cherished time for both locals and visitors to enjoy before the days grow shorter.

Average Daylight Hours in Blagoevgrad for September

The chart illustrates the variation in daylight duration in Blagoevgrad throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 29m10h 34m11h 57m13h 22m14h 34m15h 11m14h 51m13h 48m12h 26m11h 1m9h 47m9h 8m
Data source: Blagoevgrad daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Blagoevgrad

As autumn begins to settle over Blagoevgrad, September brings a gentle breeze, with average wind speeds dipping to 1.6 m/s (4 mph). This slight decrease continues the trend observed throughout the summer months, where a gradual reduction in wind speed has been noted since June. The winds remain mild, creating a serene atmosphere ideal for enjoying the vibrant fall foliage. Interestingly, September's calmness contrasts with the typically brisker winds of spring and winter months, where speed averages reach up to 2.3 m/s (5 mph) in January and 2.0 m/s (4 mph) in November. Thus, September stands as a tranquil transition, inviting residents and visitors alike to embrace the beauty of the changing season.

Average September Wind Speed in Blagoevgrad

The chart displays monthly wind speed patterns in Blagoevgrad, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.32.12.01.92.01.71.71.81.6 m/s1.62.02.2
Data source: Blagoevgrad September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Blagoevgrad Compares to Other Months

Weather in Blagoevgrad varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Blagoevgrad, focusing on differences in temperature, rainfall, humidity, and UV levels.

September and January present stark contrasts in weather conditions. In September, temperatures range from a chilly minimum of -1°C (31°F) to a warm maximum of 32°C (90°F), with an average temperature of 18°C (64°F). The month sees relatively low precipitation, totaling 28 mm (1.1 in) over just 3 days, and the humidity sits at a moderate 57%. In contrast, January is characterized by much colder weather, with temperatures plummeting to a minimum of -23°C (-9°F) and only reaching a maximum of 13°C (55°F), yielding an average temperature of 0°C (33°F). Additionally, January experiences significantly higher precipitation of 63 mm (2.5 in) spread over 9 days, and the humidity rises to 88%, creating a damp and frigid environment. For more detailed insights, check out Blagoevgrad weather in January.

September and February offer distinctly different weather experiences. In September, temperatures range from a low of -1°C (31°F) to a high of 32°C (90°F), with an average of 18°C (64°F). This month sees relatively low precipitation, totaling 28 mm (1.1 in) over just 3 days and a moderate humidity of 57%. In contrast, February is much colder, with temperatures dipping to -20°C (-4°F) at night, reaching a maximum of 18°C (64°F) during the day, and averaging only 4°C (39°F). This month experiences more precipitation, totaling 55 mm (2.2 in) over 8 days, accompanied by higher humidity at 83%. For more details, check out Blagoevgrad weather in February.

The contrast between September and March weather is quite striking. In September, temperatures can range from a chilly minimum of -1°C (31°F) to a warm maximum of 32°C (90°F), with an average of 18°C (64°F). The month usually sees about 28 mm (1.1 in) of precipitation over just three days, along with a moderate humidity level of 57%. In contrast, March experiences much colder temperatures, starting as low as -17°C (2°F) and peaking at 23°C (73°F) for an average of 6°C (43°F). This month is also significantly wetter, with 93 mm (3.6 in) of precipitation spread across 11 days and a higher humidity of 81%. For more specific details on March weather, check out Blagoevgrad weather in March.

When comparing the weather in September and April, it’s evident that September tends to be warmer and drier. In September, temperatures range from a minimum of -1°C (31°F) to a maximum of 32°C (90°F), with an average of 18°C (64°F) and only 28 mm of precipitation over about 3 days. In contrast, April experiences cooler temperatures, with a minimum of -5°C (23°F) and a maximum of 26°C (79°F), averaging just 10°C (51°F). Additionally, April sees more rainfall, totaling 64 mm over approximately 9 days, and higher humidity levels at 71%. For more detailed insights, you can check Blagoevgrad weather in April.

When comparing the weather in September and May, September tends to offer a broader temperature range, with minimums dropping to -1°C (31°F) and highs reaching up to 32°C (90°F), while May experiences slightly milder temperatures with a minimum of 2°C (35°F) and a maximum of 29°C (85°F). Precipitation is notably lower in September, averaging only 28 mm (1.1 in) over about 3 days, compared to May's higher rainfall of 57 mm (2.3 in) spread over 10 days. Additionally, humidity levels are higher in May at 74%, contrasting with September's more comfortable 57%. For a detailed look at the weather specifics, you can check Blagoevgrad weather in May.

In comparing the weather of September and June, we see notable differences in temperatures and precipitation patterns. September experiences a broader temperature range with a minimum of -1°C (31°F) and a maximum of 32°C (90°F), while June's temperatures are slightly milder, ranging from 5°C (41°F) to a maximum of 34°C (93°F). The average temperature in September is around 18°C (64°F), just slightly lower than June's average of 19°C (66°F). In terms of precipitation, September is relatively drier with 28 mm (1.1 in) over just 3 days, compared to June's 58 mm (2.3 in) spread over 9 days. Additionally, June tends to be more humid, with a humidity level of 63% versus September's 57%. For a more detailed look at the climate in June, you can check Blagoevgrad weather in June.

In comparing the weather of September and July, it’s clear that July tends to be warmer overall, with average temperatures around 21°C (71°F) compared to September's average of 18°C (64°F). July also experiences higher maximum temperatures, peaking at 35°C (96°F) versus September's maximum of 32°C (90°F). However, September offers a wider range of temperatures, swinging from a chilly minimum of -1°C (31°F) at night, while July starts noticeably warmer with a minimum of 10°C (50°F). Precipitation is slightly higher in July, with 37 mm (1.4 in) falling over 5 days compared to September's 28 mm (1.1 in) across only 3 days. Humidity levels are relatively similar, with July at 60% and September at 57%. For a detailed overview of July's weather, you can check Blagoevgrad weather in July.

In comparing the weather patterns of September and August, it’s evident that September experiences a broader range of temperatures, with a minimum of -1°C (31°F) and a maximum of 32°C (90°F), compared to August, which has a milder minimum of 9°C (49°F) and a higher maximum of 36°C (97°F). The average temperature in September is 18°C (64°F), while August maintains a warmer average of 22°C (72°F). Additionally, September receives slightly more precipitation at 28 mm (1.1 in) over 3 days, compared to August’s 23 mm (0.9 in) over 4 days, and the humidity in September is notably higher at 57% compared to August's 47%. For a more detailed look at August's weather, check out Blagoevgrad weather in August.

September and October present notable shifts in weather patterns. In September, temperatures range from a minimum of -1°C (31°F) to a maximum of 32°C (90°F), with an average temperature of 18°C (64°F). The month sees relatively low precipitation at 28 mm (1.1 in) over just 3 days and a humidity level of 57%. In contrast, October experiences cooler temperatures, with a minimum of -2°C (29°F), an average of 12°C (54°F), and a maximum of 27°C (82°F). This month also brings increased rainfall, totaling 54 mm (2.1 in) over 5 days and a higher humidity of 76%. For more details, you can check the Blagoevgrad weather in October.

September and November present contrasting weather patterns. In September, temperatures range from a minimum of -1°C (31°F) to a maximum of 32°C (90°F), with an average of 18°C (64°F). The month sees only 28 mm (1.1 in) of precipitation over just 3 days and a moderate humidity of 57%. In contrast, November has colder temperatures, with a minimum of -10°C (15°F), an average of 7°C (46°F), and a maximum of 24°C (75°F). This month experiences increased precipitation of 53 mm (2.1 in) over 7 days and a significantly higher humidity level of 85%. For more detailed insights, you can check out Blagoevgrad weather in November.

September and December present stark contrasts in weather patterns. In September, temperatures range from a minimum of -1°C (31°F) to an average of 18°C (64°F), peaking at 32°C (90°F), promoting a pleasant outdoor environment. Precipitation is relatively low at 28 mm (1.1 in) over just three days, and humidity averages around 57%. In contrast, December is characterized by much cooler temperatures, with a minimum of -12°C (11°F) and an average temperature of only 3°C (38°F), reaching a maximum of 13°C (57°F). The month sees significantly more precipitation, totaling 98 mm (3.9 in) across 11 days, alongside a higher humidity level of 87%. For a closer look at December's conditions, visit Blagoevgrad weather in December.

Compare Blagoevgrad's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Blagoevgrad

As September arrives in Blagoevgrad, a noticeable shift in weather patterns marks the transition from summer to autumn. The warmth of the earlier months lingers, with temperatures reaching a comfortable 32°C on some days, while the average cools down to a pleasant 18°C, providing an ideal climate for outdoor activities. Unlike the high humidity of summer, September experiences a milder 57% humidity, making the air feel fresher. Additionally, the slight increase in rainfall, averaging 28 mm over just three days, hints at the approaching fall season without overwhelming the sunny days that still grace the region. To explore more about what to expect throughout the year, visit Blagoevgrad Climate.