September Weather in Borsec, Romania

Last updated: August 27, 2025

In Borsec, Romania, September showcases a diverse range of temperatures, peaking at a pleasant 27°C (81°F) during the day, while dipping to a cool -5°C (24°F) at night, resulting in an average of 12°C (53°F). The month experiences a total precipitation of 61 mm (2.4 in) across 10 days, contributing to the region's lush landscapes. With a moderate humidity level of 62%, visitors can enjoy the refreshing autumn air while embracing the natural beauty that Borsec has to offer.

September Temperature in Borsec

In September, Borsec, Romania begins to transition from the warmth of summer to the cooler embrace of autumn. With minimum temperatures dipping to -5°C (24°F) and averages settling at 12°C (53°F), there’s a noticeable shift in the weather. While the maximum temperatures can still reach a pleasant 27°C (81°F), hinting at the remnants of summer, the overall climate becomes more refreshing and invigorating. This month often heralds the arrival of vibrant autumn foliage, making it an ideal time for exploring the scenic beauty of the region amidst comfortably crisp air. As the days shorten and temperatures cool, the enchanting landscape of Borsec offers a unique charm that invites both adventure and relaxation.

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

The chart illustrates September temperature patterns in Borsec, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Borsec, 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).
JanFebMarAprMayJunJulAugSepOctNovDec212631415058606253443626
Data source: Temperature data for Borsec 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 Borsec

In September, Borsec experiences a noticeable shift in precipitation patterns, receiving 61 mm (2.4 in) of rainfall over 10 days. While this marks a decline from the summer's peak, particularly June's significant 156 mm, it still showcases the region's characteristic moderate moisture, typical for the transition into autumn. The distribution of rainfall offers a gentle reprieve from the heavier summer downpours, allowing for lush greenery to persist while preparing for the drier months ahead. This gradual decrease in both precipitation volume and days highlights the changing seasons, setting the stage for October's arrival and a further dip to 45 mm of rain. Overall, September serves as a bridge, merging the vibrant summer with the crisp onset of fall, making it a unique time for both nature and visitors alike.

September Precipitation Trends in Borsec

The chart displays monthly precipitation patterns in Borsec, 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 Borsec, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec3160595713715613310661453266
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Borsec

In September, Borsec, Romania, experiences a notable shift in humidity levels as the summer warmth begins to wane. With humidity dipping to 62%, it marks a transition from the drier, more comfortable days of August, which had seen a low of 56%. This gradual increase from the late summer months indicates a returning moisture in the air, paving the way for the crisper autumn months ahead. In fact, this rise in humidity is part of a broader trend where the humidity levels see a resurgence in October (80%) and again in the cooler months, reminding residents that while the temperatures may cool, the moisture content in the atmosphere remains a defining aspect of Borsec's climate throughout the year.

September Average Humidity in Borsec

This chart illustrates the average monthly humidity levels in Borsec, 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 Borsec is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%88%86%79%73%73%69%56%62%81%89%90%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Borsec

As summer fades into autumn, September in Borsec, Romania presents a notable shift in the UV Index, dropping to 7, which falls into the high exposure category. This translates to a burn time of approximately 25 minutes for fair-skinned individuals, indicating that while it's safer than the peak summer months, caution is still warranted. The trend shows a gradual decline from the very high indices of July and August, which peaked at 9. As the landscape transitions to vibrant autumn colors, it's important to remain mindful of sun exposure, particularly during midday hours. For more detailed insights about UV levels throughout the year, check out Borsec UV Index.

Maximum UV Index Levels in Borsec for September

The chart shows the monthly maximum UV Index (UVI) for Borsec 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 Borsec typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec236789987532
Data source: Borsec 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 Borsec

As summer gracefully bids farewell, September in Borsec, Romania, embraces a transition marked by an abundance of daylight, boasting an impressive 334 hours of sunshine. This month stands in contrast to the preceding summer, where July reached its peak with 417 hours of sun, followed closely by August at 404 hours. While September's hours slightly dip from the summer highs, they still hold their own against the cooler months ahead. The gradual decrease in daylight from the vibrant celebration of light experienced in the peak summer months reflects nature's rhythm, preparing the landscape for the tranquil beauty of autumn. With its gentle sun-soaked days, September invites visitors to revel in the lingering warmth before the charm of the fall sets in.

Monthly Sunshine Duration in Borsec: September Highlighted

The September sunshine duration represents the total number of hours Borsec 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.
JanFebMarAprMayJunJulAugSepOctNovDec165h215h290h342h383h389h417h404h334h284h229h178h
Data source: Borsec September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Borsec During September

As September unfolds in Borsec, Romania, the likelihood of sunshine shows a notable decline compared to the vibrant summer months, with a chance of sun hovering around 27%. This transition marks a shift from the 36% likelihood of sun experienced in both July and August, indicating a return to more variable weather patterns as autumn approaches. Interestingly, the chance of sunny days in September is still notably higher than the winter months, particularly January's mere 15%. Thus, while September may not boast the sun-kissed reliability of summer, it still offers a sliver of brightness before the cooler, cloudier days set in.

Percentage of Sunny Days in September in Borsec

The chart illustrates the percentage of sunny days in Borsec 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 Borsec experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec15%28%32%32%32%29%36%36%27%47%38%14%
Data source: Borsec September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Borsec in September

As summer transitions into autumn, September in Borsec, Romania, offers a gentle reduction in daylight, with approximately 12 hours of sunlight gracing the day. This marks a shift from the peak of summer, where daylight reached a full 15 hours in June, July, and early August. The progressive decline in daylight hours highlights the changing seasons, providing a beautiful backdrop for the vibrant fall foliage. As the days become shorter, September still retains a generous amount of light, allowing residents and visitors to enjoy the tail end of outdoor activities while anticipating the cozy, shorter days of October. Overall, this month serves as a bridge, blending the warmth of summer with the crispness of autumn.

Average Daylight Hours in Borsec for September

The chart illustrates the variation in daylight duration in Borsec throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 59m10h 17m11h 56m13h 36m15h 3m15h 48m15h 24m14h 7m12h 30m10h 50m9h 21m8h 34m
Data source: Borsec daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Borsec

In September, Borsec, Romania, experiences a gentle breeze, with an average wind speed of 1.9 m/s (4 mph). This slight uptick from the summer months, where the winds dwindled to their annual lows of 1.7 m/s in August, suggests a subtle transition as autumn begins to weave its way into the landscape. As the year progresses into the cooler months, the wind speeds gradually stabilize, hovering between 1.9 m/s and 2.1 m/s, reflecting a consistent patter that brings a refreshing touch to the crisp September air. These gentle winds provide the perfect backdrop for outdoor activities and leisurely strolls, embracing the serene beauty of Borsec as the leaves begin to change.

Average September Wind Speed in Borsec

The chart displays monthly wind speed patterns in Borsec, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.32.42.42.12.42.11.81.71.9 m/s1.92.02.1
Data source: Borsec September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Borsec Compares to Other Months

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

September and January present starkly contrasting weather patterns. In September, temperatures fluctuate between a minimum of -5°C (24°F) and a pleasant maximum of 27°C (81°F), averaging around 12°C (53°F). This month also sees moderate precipitation at 61 mm (2.4 in) over about 10 days, with a humidity level of 62%. In stark contrast, January experiences much colder temperatures, with a minimum of -26°C (-14°F) and a maximum of only 7°C (44°F), averaging a chilly -6°C (21°F). The precipitation in January is lower at 31 mm (1.2 in) across 9 days, but the humidity is significantly higher at 92%. For those interested in specific January conditions, you can check out Borsec weather in January.

September and February present stark contrasts in weather conditions. September enjoys milder temperatures, ranging from a chilly minimum of -5°C (24°F) to a pleasant maximum of 27°C (81°F) with an average of 12°C (53°F), alongside moderate humidity at 62%. In contrast, February sees much colder temperatures, with lows plunging to -22°C (-7°F) and a maximum reaching only 12°C (53°F), resulting in a significantly lower average of -3°C (26°F). February also experiences slightly more precipitation spread across 13 days compared to September's 10 days, along with higher humidity levels at 88%. For more on February weather specifics, check out Borsec weather in February.

In comparing the weather of September and March, we see significant differences in temperature and humidity. September boasts a more temperate climate with average highs of 12°C (53°F) and maximums reaching up to 27°C (81°F), while March experiences much colder conditions, with average temperatures around -1°C (31°F) and minimums plummeting to -22°C (-7°F). Both months receive similar amounts of precipitation, with September at 61 mm and March at 59 mm, but March has slightly more rainy days, totaling 13 compared to September’s 10 days. Humidity also varies considerably: September has a moderate 62%, while March is notably more humid at 86%. For a detailed look at March weather, you can visit Borsec weather in March.

September and April present markedly different weather patterns. In September, temperatures range from a chilly -5°C (24°F) to a warm 27°C (81°F), with an average temperature of 12°C (53°F). This month experiences 61 mm (2.4 in) of precipitation over about 10 days and a moderate humidity level of 62%. In contrast, April has cooler temperatures, with a minimum of -11°C (12°F) and a maximum of 23°C (73°F), leading to an average of 5°C (41°F). Precipitation in April is slightly less, at 57 mm (2.3 in) over 12 days, but the humidity is higher at 79%. For more detailed insights, you can check Borsec weather in April.

September and May showcase notable differences in weather patterns. In September, temperatures range from a chilly -5°C (24°F) at night to a pleasant 27°C (81°F) during the day, averaging around 12°C (53°F). The month sees about 61 mm (2.4 in) of precipitation over 10 days, with humidity levels at 62%. In contrast, May experiences slightly milder temperatures, with minimums of -4°C (25°F) and maximums reaching 24°C (75°F), averaging 10°C (50°F). Additionally, May is rainier, accumulating 137 mm (5.4 in) of precipitation over 20 days and higher humidity at 73%. For more detailed insights, you can check Borsec weather in May.

In comparing the weather between September and June, we find notable differences in temperature and precipitation. September experiences a wide temperature range with a minimum of -5°C (24°F) and a maximum of 27°C (81°F), averaging around 12°C (53°F). In contrast, June typically has milder temperatures, with a minimum of 2°C (36°F) and a maximum also reaching 27°C (81°F), but with a higher average of 15°C (58°F).

Precipitation levels reveal more rainfall in June, totaling 156 mm (6.1 in) across 21 days, compared to September's 61 mm (2.4 in) over 10 days. This contributes to June's higher humidity at 73%, compared to September's 62%. For more details on the weather conditions in June, you can check Borsec weather in June.

The weather in September shows a broader temperature range, with minimums dipping to -5°C (24°F) and average highs reaching 27°C (81°F), compared to July's milder minimum of 3°C (38°F) and an average high of 27°C (81°F). While both months experience the same maximum temperature, September tends to be drier with 61 mm (2.4 in) of precipitation over 10 days, as opposed to July's much wetter conditions, which see 133 mm (5.2 in) of rainfall across 18 days. Additionally, September's average humidity of 62% is slightly lower than July's 68%, contributing to a more comfortable feeling in late summer. For a more detailed look at July weather, check Borsec weather in July.

In comparing the weather of September to August, we see some notable differences in temperature and precipitation. September boasts a minimum temperature of -5°C (24°F) and an average of 12°C (53°F), significantly cooler than August's minimum of 3°C (38°F) and average of 16°C (62°F). The maximum temperatures are also slightly lower in September, peaking at 27°C (81°F) compared to August's 29°C (85°F). Additionally, September experiences increased precipitation with 61 mm (2.4 in) across 10 days, though it is less than August's total of 106 mm (4.2 in) over 14 days. Humidity levels are also higher in September at 62%, compared to 56% in August. For a deeper understanding of August's weather specifics, you can view more details at Borsec weather in August.

September and October exhibit notable differences in weather patterns. In September, temperatures range from a minimum of -5°C (24°F) to a warm maximum of 27°C (81°F), with an average of 12°C (53°F). The month sees a total precipitation of 61 mm (2.4 in) over approximately 10 days, while humidity levels are around 62%. In contrast, October brings cooler weather, with a lower average temperature of 7°C (44°F) and a max of 22°C (72°F), although it shares the same minimum temperature of -5°C (24°F). Precipitation decreases to 45 mm (1.8 in) over just 7 days, accompanied by an increase in humidity to 80%. For more detailed information on October weather, you can visit Borsec weather in October.

September and November showcase a stark contrast in weather conditions. In September, temperatures range from a chilly minimum of -5°C (24°F) to a warm maximum of 27°C (81°F), with an average of 12°C (53°F). The month experiences around 61 mm (2.4 in) of precipitation over 10 days and maintains a humidity level of 62%. In comparison, November brings colder temperatures, with a minimum of -16°C (3°F), an average of just 2°C (36°F), and a maximum of 19°C (67°F). Precipitation decreases to 32 mm (1.3 in) across 8 days, yet the humidity rises significantly to 89%. For more specific details on November weather, check this link: Borsec weather in November.

In September, the weather is relatively mild, with temperatures ranging from a minimum of -5°C (24°F) to an average of 12°C (53°F) and a maximum of 27°C (81°F). The month experiences moderate precipitation of 61 mm (2.4 in) over about 10 days, accompanied by a humidity level of 62%. In contrast, December brings a significant drop in temperatures, with a minimum of -25°C (-13°F) and an average of -3°C (26°F), while the maximum reaches only 9°C (48°F). Precipitation in December is slightly higher at 66 mm (2.6 in) and occurs over 13 days, with much higher humidity at 90%. For more specific details about the weather during this month, check out Borsec weather in December.

Compare Borsec's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Borsec

As September unfolds in Borsec, the weather transitions into a refreshing but varied experience. With maximum temperatures reaching 27°C (81°F), the early part of the month still embraces the warmth of summer, yet evenings can be surprisingly cool, dipping down to low temperatures around -5°C (24°F). This blend of warm days and crisp nights, coupled with an average humidity of 62%, creates a unique atmosphere. While precipitation is not overly abundant with about 61 mm (2.4 in) over 10 days, it adds a refreshing touch to the lush landscape, distinguishing September from the drier, more stable conditions of summer. For those looking to understand more about the climate nuances in this charming region, visit Borsec Climate.