Last updated: August 27, 2025
In September, the weather in Sibiu, Romania showcases a delightful transition from summer to autumn. Daytime temperatures can reach a maximum of 30°C (87°F), providing warm conditions, while the average temperature settles comfortably at 15°C (59°F). However, as the month progresses, nighttime can get chilly, dropping to a minimum of -2°C (28°F). With 62 mm (2.4 inches) of precipitation spread over 10 days, occasional rain contributes to the region's vibrant autumn landscape. The humidity level hovers around 58%, adding a crispness to the air and enhancing the enchanting atmosphere of this historic city.
In Sibiu, Romania, September ushers in a refreshing transition as summer wanes, but warmth still lingers. With daily temperatures ranging from a minimum of -2°C (28°F) to a maximum of 30°C (87°F), this month offers a delightful average of 15°C (59°F). As the countryside begins to don its autumn hues, the cooler early mornings give way to pleasantly warm afternoons, making it an ideal time for exploration. The move from the sizzling August heat to the gentler September climate marks a significant seasonal shift, inviting both locals and visitors to enjoy outdoor activities amid more comfortable conditions. As the cool nights set in, they hint at the approaching chill of fall, yet the warmth of the day still calls for sunlit adventures, creating a perfect blend of summer's end and autumn's beginning.
In September, Sibiu, Romania experiences a transition toward autumn, marked by a moderate precipitation level of 62 mm (2.4 in) over 10 days. This amount is consistent with the drier summer months, particularly following the heavier downpours of May and June, which recorded 147 mm (5.8 in) and 148 mm (5.8 in) respectively. The rains in September, while slightly less than those of April, still provide much-needed moisture to the landscape, ensuring a vibrant backdrop as the leaves start to change. As the season progresses, precipitation begins to taper off, with October receiving just 56 mm (2.2 in), suggesting a gradual shift toward the cooler and often drier months ahead. This trend highlights the climatic rhythm of the region, where September serves as a balance between the lushness of summer and the crispness of autumn.
In September, Sibiu, Romania experiences a noticeable shift in humidity, with levels at 58%. This marks a slight increase from the drier summer months of July and August, where humidity dropped significantly to 65% and 51%, respectively. As the warmth of summer gives way to the crispness of autumn, residents and visitors alike can expect a more comfortable atmosphere. This trend continues into October, where humidity rises again to 80%, heralding the approach of colder months. Overall, September's humidity strikes a balance that is distinctly more pleasant than the preceding summer, providing a refreshing transition into fall.
As summer fades into autumn in Sibiu, Romania, the September UV Index marks a transition toward milder sunshine. With a UV Index of 7, classified as high, the sun still delivers a strong dose of ultraviolet rays, necessitating caution during outdoor activities. This month’s burn time of 25 minutes encourages sun protection, reminiscent of the peak summer months, yet a slight dip from August's intense levels of 9. Following the patterns of the previous months, September serves as a reminder to enjoy the outdoors while being mindful of UV exposure. For more detailed information, visit the Sibiu UV Index.
UV Risk Categories
September in Sibiu, Romania, embraces an inviting warmth with 331 hours of sunshine, making it a delightful transition into autumn. This month showcases a slight decline from the summer peak, reflecting a natural ebb in daylight as the days grow shorter. Following a vibrant July, which boasts 409 hours of bright skies, September maintains a substantial glow, creating perfect conditions for outdoor exploration and cultural festivities. As the lush green of summer begins to fade, the city bathes in golden light, offering a picturesque backdrop for both locals and visitors to enjoy before the chill of October sets in. With sunshine hours gradually tapering off, September stands as a charming reminder of summer's lingering embrace.
September in Sibiu, Romania, marks a delightful transition into autumn, with a 51% chance of sunny weather. This percentage reflects a slight dip from the warmer summer months of July and August, which boast sun chances of 56% and 54% respectively. Interestingly, September maintains a more favorable outlook than the fluctuating probabilities seen earlier in the year, particularly when compared to the cold winter months, where the likelihood can plummet to as low as 19% in January. With the sun peeking out more often in September, it presents a wonderful opportunity to enjoy the city's charming scenery before autumn fully sets in.
As summer fades into autumn, September in Sibiu, Romania brings a gentle transition with about 12 hours of daylight. This marks a noticeable decline from the peak daylight of 15 hours in June and July, following a gradual tapering that begins in May. The days remain relatively long compared to the winter months, but the shift signals the approach of cooler temperatures and shorter days ahead. As the vibrant hues of autumn begin to paint the landscape, residents and visitors alike can still enjoy ample time outdoors before daylight dwindles further into October’s 10 hours.
As September settles in Sibiu, Romania, a subtle shift in the breeze can be felt, with an average wind speed of 1.6 m/s (4 mph), mirroring the gentle gusts of the previous summer months. This consistent wind speed reflects a transition, maintaining a balmy touch while hinting at the advent of autumn. Interestingly, after a slight dip in summer, the wind begins to gather strength again in October, inching up to 1.8 m/s (4 mph). Overall, the trend reveals a serene wind pattern throughout the year, punctuated by a comforting constancy that invites locals and visitors alike to enjoy the beautiful outdoor scenery of this enchanting city.
Weather in Sibiu varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Sibiu, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, temperatures in the region range from a chilly minimum of -2°C (28°F) to a warm maximum of 30°C (87°F), with an average of 15°C (59°F). This month experiences moderate precipitation of 62 mm (2.4 in) over about 10 days, accompanied by a humidity level of 58%. In contrast, January presents a much harsher climate, with temperatures plunging as low as -26°C (-15°F) and averaging -3°C (27°F), peaking at just 13°C (56°F). January also sees less precipitation at 44 mm (1.7 in) over 9 days, but the humidity skyrockets to a high of 91%. For more details, you can visit Sibiu weather in January.
September and February present stark contrasts in weather conditions. In September, temperatures range from a chilly minimum of -2°C (28°F) to an inviting maximum of 30°C (87°F), with an average of 15°C (59°F). The month experiences moderate precipitation levels of 62 mm (2.4 in) over approximately 10 days, accompanied by a relatively comfortable humidity of 58%. In contrast, February brings much colder temperatures, with a minimum of -17°C (2°F) and a maximum of only 16°C (61°F), averaging around 0°C (33°F). Although precipitation is slightly lower at 58 mm (2.3 in) over about 11 days, the humidity spikes to a steamy 86%. For more detailed information on February weather conditions, check out Sibiu weather in February.
In September, the weather tends to be much milder, with temperatures ranging from a minimum of -2°C (28°F) to a maximum of 30°C (87°F), and an average of 15°C (59°F). This month sees about 62 mm (2.4 in) of precipitation over approximately 10 days, and the humidity level is around 58%. In contrast, March is noticeably colder, with minimum temperatures plummeting to -14°C (8°F) and a maximum of 21°C (70°F), averaging just 3°C (38°F). Additionally, March experiences slightly more precipitation at 76 mm (3.0 in) over 13 days, alongside higher humidity levels at 83%. For a more detailed look at weather patterns, check out Sibiu weather in March.
When comparing the weather in September and April, notable differences emerge in temperature and humidity. September typically boasts a more moderate range, with minimums around -2°C (28°F), average temperatures of 15°C (59°F), and maximums reaching up to 30°C (87°F). In contrast, April is chillier, featuring minimum temperatures of -8°C (18°F) and an average of only 8°C (47°F), with highs peaking at 24°C (75°F).
Both months receive similar levels of precipitation, averaging 62 mm (2.4 in) over a comparable number of rainy days—10 in September and 11 in April. However, April experiences higher humidity at 74%, compared to September’s 58%. This higher humidity in April contributes to a cooler, more humid feel, while September tends to provide warmer days, making it more pleasant overall. For a closer look at April's conditions, you can visit Sibiu weather in April.
When comparing the weather in September and May, several notable differences emerge. September typically features a wider temperature range, with minimums dipping to -2°C (28°F) and maximums reaching up to 30°C (87°F), while May offers a milder range from 0°C (33°F) to a maximum of 27°C (80°F). In terms of precipitation, May is significantly wetter, receiving 147 mm (5.8 in) over 19 days compared to September's 62 mm (2.4 in) over 10 days. Additionally, humidity levels are higher in May at 70%, compared to September's 58%. For a deeper look into specific weather patterns for May, you can check this link: Sibiu weather in May.
September and June exhibit notable differences in weather patterns. September presents a wider temperature range, with minimums dipping as low as -2°C (28°F) and maximums reaching 30°C (87°F), while June generally maintains a milder temperature range from 5°C (41°F) to 30°C (86°F). Rainfall also varies significantly; September experiences 62 mm (2.4 in) of precipitation over about 10 days, whereas June sees a much higher total of 148 mm (5.8 in) across 17 rainy days. Additionally, humidity levels in June are a bit higher at 67%, compared to September’s 58%. For a closer look at June weather specifics, you can visit Sibiu weather in June.
September and July present contrasting weather experiences. In September, temperatures range from a chilly minimum of -2°C (28°F) to a warm maximum of 30°C (87°F), with an average of 15°C (59°F). This month sees moderate precipitation of 62 mm (2.4 in) over about 10 days, accompanied by a humidity level of 58%. In contrast, July boasts milder temperatures, with a minimum of 7°C (45°F), an average of 19°C (66°F), and a peak of 31°C (88°F). However, it experiences significantly higher rainfall, accumulating 128 mm (5.0 in) across 17 days, along with increased humidity at 65%. For more details on July weather, visit Sibiu weather in July.
In September, the weather tends to be cooler than in August, with minimum temperatures dropping to -2°C (28°F) compared to August's milder low of 7°C (45°F). While September's average temperature is a comfortable 15°C (59°F), it trails behind August's warmer average of 20°C (67°F). Maximum temperatures in September reach 30°C (87°F), which is slightly lower than August’s peak of 33°C (92°F). Additionally, September experiences a bit more precipitation, averaging 62 mm (2.4 inches) over 10 days, while August sees 97 mm (3.8 inches) over 11 days. Notably, September's humidity is higher at 58%, compared to August's 51%. For more detailed information, you can check Sibiu weather in August.
In September, temperatures range from a chilly minimum of -2°C (28°F) to a warm maximum of 30°C (87°F), with an average temperature of 15°C (59°F). The month experiences 62 mm (2.4 in) of precipitation over 10 days, and humidity levels sit at around 58%.
In contrast, October sees a slight drop in temperatures, with a minimum of -3°C (27°F), an average of 10°C (50°F), and a maximum of 25°C (78°F). The total precipitation is somewhat lower at 56 mm (2.2 in) over 8 days, but the humidity rises to 80%. For more details on October weather, you can visit Sibiu weather in October.
September and November exhibit distinct weather characteristics that reflect the transition from late summer to early winter. In September, temperatures range from a minimum of -2°C (28°F) to a maximum of 30°C (87°F), with an average of 15°C (59°F), providing relatively warm conditions. The month sees about 62 mm (2.4 in) of precipitation over 10 days, alongside a moderate humidity level of 58%. In contrast, November brings significantly cooler temperatures, with a minimum of -7°C (20°F) and an average of just 5°C (42°F). The maximum temperature reaches only 22°C (72°F), and while November experiences slightly less precipitation at 50 mm (2.0 in) over 10 days, the humidity rises notably to 88%. Overall, the shift from September to November highlights a marked decline in temperatures and an increase in humidity, setting a starkly different atmosphere. For more specific information, you can check Sibiu weather in November.
September weather in Sibiu features a wide range of temperatures, with minimums dropping to -2°C (28°F) and highs reaching up to 30°C (87°F), resulting in an average of 15°C (59°F). The month sees a moderate amount of precipitation at 62 mm (2.4 in) spread over about 10 days, coupled with a relatively comfortable humidity level of 58%. In contrast, December brings colder conditions, with temperatures plummeting to a minimum of -15°C (5°F) and an average temperature of around 0°C (33°F). The month experiences increased precipitation totaling 87 mm (3.4 in) over approximately 16 days, accompanied by a higher humidity level of 90%. For more details on December weather specifics, you can check Sibiu weather in December.
As September rolls in, Sibiu's weather begins to shift, presenting a delightful blend of early autumn charm while still holding onto the tail end of summer warmth. Unlike the peaking temperatures of July and August, September brings a comforting average of 15°C (59°F), with occasional highs reaching up to 30°C (87°F). The cooler nights and a few rainy days—averaging about 62 mm of precipitation—create a refreshing contrast to the dry heat of summer. Additionally, with a humidity level around 58%, the air carries a crispness that invites outdoor exploration. For those curious about how this month fits into the broader climate landscape, check out Sibiu Climate.