September Weather in Boleslawiec, Poland

Last updated: August 27, 2025

September in Boleslawiec, Poland offers a captivating mix of weather, where the temperatures range from a cozy 2°C (35°F) at night to a warm 33°C (92°F) during the day, providing a delightful experience for residents and visitors alike. The average temperature hovers around a comfortable 15°C (60°F), perfect for outdoor activities. However, September also brings some moisture, with 76 mm (3.0 in) of rain distributed over 10 days, resulting in a relatively humid atmosphere at about 72%. This combination of warmth and occasional showers paints a vibrant picture of late summer transitioning into fall, making it an intriguing month for enjoying the picturesque landscapes of the region.

September Temperature in Boleslawiec

In Boleslawiec, Poland, the temperatures of September usher in a transition from the summer heat to the crispness of autumn. With minimums around 2°C (35°F) and average highs reaching 33°C (92°F), this month showcases a delightful blend of lingering warmth and cooler nights. The average temperature settles at a comfortable 15°C (60°F), inviting outdoor activities to savor the changing foliage. Compared to the peak summer months, September offers a pleasant respite from the sweltering heat, making it an ideal time for exploring the town's rich culture and scenic landscapes before the chill of October descends.

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

The chart illustrates September temperature patterns in Boleslawiec, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Boleslawiec, 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).
JanFebMarAprMayJunJulAugSepOctNovDec323440485768686959514336
Data source: Temperature data for Boleslawiec 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 Boleslawiec

In September, Boleslawiec experiences a moderate precipitation level of 76 mm (3.0 in), marking a slight decrease from the previous month's significant rainfalls. With rainfall occurring over 10 days, September continues the wet trends established during the summer months. This consistent precipitation contributes to the region's lush landscapes, bridging the gap between the dying summer and the crisp autumn air. As the month unfolds, rain ensures the earth remains well-nourished, setting the stage for the changing seasons ahead.

September Precipitation Trends in Boleslawiec

The chart displays monthly precipitation patterns in Boleslawiec, 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 Boleslawiec, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec414640448078738776663550
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Boleslawiec

In September, Boleslawiec experiences a notable shift in humidity levels, with the average at 72%—a moderate increase from the summer months. This transition marks a departure from the relatively stable humidity that characterizes the summer, where levels hovered around 67% in both July and August. As autumn approaches, the rising humidity signals the onset of cooler temperatures and a gradual return to the wetter conditions typical of the fall and winter months. The noticeable dip from 65% in May emphasizes how the lushness of summer gives way to the crispness of the season ahead, creating a unique atmospheric charm for this historic Polish town.

September Average Humidity in Boleslawiec

This chart illustrates the average monthly humidity levels in Boleslawiec, 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 Boleslawiec is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%88%86%79%65%66%67%67%72%83%90%92%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Boleslawiec

In September, Boleslawiec, Poland experiences a UV Index of 6, placing it in the high exposure category with a burn time of just 25 minutes. This marks a slight decline from the intense summer months of July and August, where the UV Index peaked at 8 and 7, respectively. As autumn approaches, sun protection remains essential, especially as the days grow shorter but still boast significant sunlight. This trend reminds residents and visitors alike to remain vigilant about UV exposure, even as the temperatures begin to cool. For more detailed information, you can check the Boleslawiec UV Index.

Maximum UV Index Levels in Boleslawiec for September

The chart shows the monthly maximum UV Index (UVI) for Boleslawiec 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 Boleslawiec typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124577876321
Data source: Boleslawiec 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 Boleslawiec

In Boleslawiec, Poland, September offers a delightful transition into autumn, showcasing 299 hours of sunshine. This marks a significant dip from the sun-drenched height of summer, exemplified by July's impressive 423 hours, yet still maintains a vibrant warmth that lingers from the hotter months. As the calendar turns towards cooler weather, the gradual decline in daylight hours becomes evident; however, September's sunshine is a joyful reminder of summer's lingering embrace before the shorter days of October, with its 255 hours of sunlight, fully set in. The month serves as a beautiful bridge, blending the vitality of summer with the approaching crispness of fall, inviting both residents and visitors to relish the golden hues of early autumn.

Monthly Sunshine Duration in Boleslawiec: September Highlighted

The September sunshine duration represents the total number of hours Boleslawiec 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.
JanFebMarAprMayJunJulAugSepOctNovDec121h192h276h324h379h410h423h384h299h255h176h132h
Data source: Boleslawiec September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Boleslawiec During September

In Boleslawiec, Poland, the likelihood of sunny weather in September reaches a promising 38%, aligning with the trend of increased sunshine that begins in the summer months. Following a peak of 50% in June, the chances dip slightly in July and August but remain stable into early autumn. This consistency suggests that while September might not offer the unrelenting sunshine found in summer, it still provides ample opportunities for sunny days as the weather begins to transition. As the year progresses, a notable rise occurs again in October, with a 47% chance of sun, indicating that Boleslawiec's residents can expect a delightful mix of sun and mild weather as summer fades and fall arrives.

Percentage of Sunny Days in September in Boleslawiec

The chart illustrates the percentage of sunny days in Boleslawiec 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 Boleslawiec experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec16%29%38%36%38%50%33%29%38%47%25%23%
Data source: Boleslawiec September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Boleslawiec in September

As summer transitions into autumn, September in Boleslawiec, Poland, brings a gentle decline in daylight, with an average of 12 hours illuminating the day. This marks a noticeable shift from the vibrant, sun-soaked days of June and July, each basking in 16 hours of sunlight. Following the peak of summer, August sees a gradual decrease to 14 hours, paving the way for September's softer glow. The daylight hours gradually diminish, setting the stage for the shorter days of October and November, which offer only 10 and 8 hours respectively. This natural ebb and flow of daylight underscores the steady transition into autumn, inviting residents and visitors alike to embrace the seasonal change.

Average Daylight Hours in Boleslawiec for September

The chart illustrates the variation in daylight duration in Boleslawiec throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 25m9h 59m11h 54m13h 53m15h 36m16h 30m16h 1m14h 29m12h 35m10h 37m8h 52m7h 55m
Data source: Boleslawiec daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Boleslawiec

In September, Boleslawiec experiences a gentle breeze with an average wind speed of 3.4 m/s (8 mph), marking a slight uptick from the calmer summer months. As the season shifts, the winds begin to pick up, hinting at the approaching autumn. This transitional period follows the subdued breezes of June and July, both averaging just 2.9 m/s (6 mph), and paves the way for a more dynamic October, which sees a notable increase to 4.4 m/s (10 mph). The gradual rise in wind speeds from late summer into early autumn reflects the changing climate patterns in the region, setting the stage for the invigorating gusts that characterize the fall months in Boleslawiec.

Average September Wind Speed in Boleslawiec

The chart displays monthly wind speed patterns in Boleslawiec, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.63.93.63.84.02.92.93.23.4 m/s4.44.24.0
Data source: Boleslawiec September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Boleslawiec Compares to Other Months

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

In September, the weather is warmer and more variable, with temperatures ranging from a chilly 2°C (35°F) at night to a scorching 33°C (92°F) during the day. The average temperature hovers around a comfortable 15°C (60°F), accompanied by relatively high humidity at 72% and 76 mm (3.0 in) of precipitation over approximately 10 days. In contrast, January brings a stark chill, with temperatures plummeting to a minimum of -22°C (-7°F) and a maximum of just 12°C (53°F), averaging around 0°C (32°F). The month is characterized by increased humidity at 90%, yet it experiences less precipitation, totaling 41 mm (1.6 in) over about 11 days. For a more detailed look at winter conditions, check out the link: Boleslawiec weather in January.

September and February weather present a striking contrast in both temperature and humidity. September enjoys a wide temperature range with average highs reaching up to 33°C (92°F), while February experiences much colder conditions, with average temperatures hovering around 1°C (34°F) and nighttime lows plummeting to -15°C (5°F). Despite having the same number of precipitation days, February receives less rainfall overall, totaling 46 mm (1.8 in) compared to September's 76 mm (3.0 in). Additionally, February's humidity is notably higher at 88%, contributing to the chill in the air, whereas September's average humidity stands at 72%, lending a warmth to the late summer atmosphere. For those interested in the specifics, you can find more details on Boleslawiec weather in February.

September and March exhibit contrasting weather patterns, characterized by significant differences in temperature and humidity. In September, temperatures can range from a cool 2°C (35°F) at night to a warm 33°C (92°F) during the day, with an average of 15°C (60°F). The month is relatively humid, with an average humidity of 72% and 76 mm of precipitation over about 10 days. In stark contrast, March typically experiences colder conditions, with nighttime lows plunging to -15°C (5°F) and daytime highs reaching 21°C (69°F), averaging just 4°C (40°F). Additionally, March has higher humidity levels at 86% but receives less precipitation, totaling 40 mm over 11 days. For detailed insights, you can explore Boleslawiec weather in March.

September and April present contrasting weather patterns, highlighting the shift from cool spring to late summer warmth. In September, temperatures range from a minimum of 2°C (35°F) to a maximum of 33°C (92°F), with an average of 15°C (60°F), while April sees cooler temperatures, with a minimum of -6°C (22°F) and a maximum of 28°C (82°F), averaging 9°C (49°F). Precipitation levels are higher in September at 76 mm (3.0 in) over 10 days, compared to April's 44 mm (1.7 in) across 9 days, indicating a slightly drier spring. Additionally, September's humidity stands at 72%, while April is slightly more humid at 79%, contributing to the overall feel of each month. For a detailed overview of April's conditions, you can check Boleslawiec weather in April.

When comparing the weather of September and May, notable differences can be observed in both temperature and precipitation patterns. September boasts a wider temperature range, with minimums around 2°C (35°F) and maximums reaching up to 33°C (92°F), creating a warm average of 15°C (60°F). In contrast, May has slightly cooler temperatures, where the minimum can drop to -1°C (30°F), with an average of 14°C (57°F) and a maximum of 30°C (86°F).

In terms of precipitation, September sees around 76 mm (3.0 in) over approximately 10 days, while May has a slightly higher total of 80 mm (3.2 in) spread over 12 days. Additionally, September experiences a higher humidity level at 72%, compared to May’s 65%. For more details on May weather patterns, you can check Boleslawiec weather in May.

September and June present quite different weather patterns, despite having similar levels of precipitation and the number of rainy days. In September, temperatures range from a chilly minimum of 2°C (35°F) to a warm maximum of 33°C (92°F), with an average of 15°C (60°F). The humidity level in September is relatively high at 72%, contributing to a more humid feel. In contrast, June shows a more moderate temperature range, with a minimum of 4°C (40°F) and a maximum of 37°C (98°F), yielding an average of 20°C (68°F). The humidity in June is slightly lower at 66%, making the warmth feel more comfortable. For more details on the weather in June, check out Boleslawiec weather in June.

In September, the weather experiences a wider temperature range, with a minimum of 2°C (35°F) and a maximum of 33°C (92°F), averaging around 15°C (60°F). In contrast, July tends to be warmer overall, with temperatures ranging from a minimum of 7°C (45°F) to a maximum of 37°C (99°F), averaging 20°C (68°F). Both months see similar levels of precipitation, with September receiving 76 mm (3.0 in) over about 10 days, while July has slightly less at 73 mm (2.9 in) but wetter conditions over 13 days. Additionally, humidity is higher in September at 72% compared to July's 67%. For more insights on July weather, you can refer to Boleslawiec weather in July.

September weather in Boleslawiec is marked by a wider temperature range, with minimums dipping to 2°C (35°F) and maximums reaching up to 33°C (92°F), compared to August's milder range of 7°C (44°F) to 34°C (94°F). While both months experience precipitation on about 10 days, September sees slightly less rainfall at 76 mm (3.0 in) compared to August's 87 mm (3.4 in). Additionally, September has a higher humidity level at 72%, compared to 67% in August. Overall, September can feel cooler and more humid as summer transitions into autumn. For more details, check Boleslawiec weather in August.

In September, the weather offers a wide range of temperatures, with daytime highs reaching up to 33°C (92°F) and lows settling around 2°C (35°F). This month experiences an average temperature of 15°C (60°F) and sees about 76 mm (3.0 in) of precipitation over 10 days, with humidity levels at 72%. In contrast, October brings a notable shift, with average temperatures dropping to 11°C (52°F) and maximums peaking at 25°C (77°F). The minimum temperatures can dip to -2°C (28°F), making it feel much cooler. While precipitation slightly decreases to 66 mm (2.6 in), humidity rises to 83%, creating a damp atmosphere. For more information, check out Boleslawiec weather in October.

In September, the weather is generally warmer and more variable, with temperatures ranging from a minimum of 2°C (35°F) to a maximum of 33°C (92°F), and an average of 15°C (60°F). The month sees about 76 mm (3.0 in) of precipitation over approximately 10 days, while humidity levels hover around 72%.

In contrast, November brings colder temperatures, with a minimum of -7°C (20°F) and a maximum of 19°C (67°F), resulting in a cooler average of 6°C (43°F). Precipitation decreases significantly to 35 mm (1.4 in) over 7 days, and humidity rises to a higher 90%. This notable shift from the warmth of September to the chill of November can be explored further in the context of local conditions: Boleslawiec weather in November.

When comparing the weather in September to December, it's clear that a significant transformation occurs. September brings more warmth, with average temperatures around 15°C (60°F), and highs reaching up to 33°C (92°F). The month also experiences 76 mm (3.0 in) of precipitation over about 10 days, showcasing a relatively humid climate with 72% humidity. In stark contrast, December sees much colder temperatures, with averages dropping to just 2°C (36°F) and nighttime lows dipping to -14°C (6°F). Precipitation decreases to 49 mm (1.9 in) spread over 13 days, but humidity rises to 92%, making the air feel colder and more saturated. For a closer look at what to expect, check out Boleslawiec weather in December.

Compare Boleslawiec's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Boleslawiec

As September unfolds in Boleslawiec, the transition to autumn becomes evident with moderate temperatures that provide a welcome reprieve from the summer heat. While daytime highs can reach a sweltering 33°C, the average cools down to a comfortable 15°C, offering a pleasant balance for outdoor activities. With about 10 days of rain bringing a total of 76 mm, this month introduces a hint of humidity, typically around 72%, marking a significant shift from the drier summer months. This blend of warmth and moisture creates a refreshing atmosphere, making it a perfect time to enjoy the vibrant landscapes of Boleslawiec. For a deeper dive into the local climate nuances, visit Boleslawiec Climate.