Last updated: August 27, 2025
September in Konstancin-Jeziorna, Poland is marked by a diverse range of temperatures, with a maximum of 31°C (87°F) offering warm days, while the average hovers around a pleasant 15°C (59°F). The evenings can be crisp, dipping to a minimum of 1°C (35°F). This month also witnesses 79 mm (3.1 in) of precipitation, spread over 12 days, contributing to a humidity level of 68%. Whether you’re enjoying the lingering warmth or refreshing bursts of rain, September unfolds a captivating tapestry of weather that beautifully transitions toward autumn.
As September arrives in Konstancin-Jeziorna, the lingering warmth of summer begins to wane, ushering in a notable change in temperatures. With minimums dipping to 1°C (35°F), the month reflects a crispness that hints at the approaching autumn. By day, the average temperature reaches a comfortable 15°C (59°F), perfect for exploring the charming local scenery. The highs can soar up to 31°C (87°F), reminiscent of summer's last hurrah, allowing residents and visitors alike to enjoy sunny days outdoors. This transitional period sets the stage for October's cooler embrace, creating a delightful balance for those savoring the season's shift. Overall, September in Konstancin-Jeziorna is a time where summer's warmth meets the refreshing chill of fall, offering a perfect blend of temperatures for a variety of activities.
September in Konstancin-Jeziorna typically features moderate precipitation, with an average rainfall of 79 mm (3.1 in) spread over 12 days. This rainfall is a slight decrease from the summer months, reflecting a transition from the heavy downpours of August, which recorded 94 mm (3.7 in). The consistent number of rainy days in September suggests a gentle continuation of the wet season, maintaining the lush greenery of the area. As autumn approaches, the precipitation tends to stabilize, providing a balance between the vibrant summer rains and the drier conditions that characterize the following months.
September in Konstancin-Jeziorna marks a noticeable transition in humidity levels, shifting from the summer's relative dryness back towards the dampness of autumn. With humidity reaching 68%, September serves as a bridge between the milder, drier months of July and August, which hovered around 55-56%, and the wetter conditions that follow in October at 84%. This uptick in humidity reflects the changing season, as the warm summer air begins to cool, allowing for increased moisture content. As such, September stands out as a month of rejuvenation, where the lingering warmth begins to intertwine with the onset of autumn's embrace.
As summer fades into autumn, September in Konstancin-Jeziorna sees a notable shift in the UV Index, which drops to 5—reflecting a moderate exposure category. This change provides a welcome respite from the intense sun experienced in July and August, where the index reached a peak of 8. With a suggested burn time of 30 minutes, it’s essential to remain vigilant during outdoor activities while enjoying the beautiful early fall weather. As the year progresses, the UV Index continues to decline, signaling the transition into the cooler months ahead. To stay informed about safe sun exposure, check out the detailed information available at Konstancin-Jeziorna UV Index.
UV Risk Categories
September in Konstancin-Jeziorna brings a warm farewell to summer, boasting 299 hours of sunshine that softly transitions into the autumn season. As the days shorten, sunlight still lingers noticeably longer than in the cooler months to come, notably outshining October's 241 hours and November's 170 hours. This seventh month of the year encapsulates the gradual decline from peak summer brightness, seen in June's impressive 422 hours and July's 421 hours. With a backdrop of colorful foliage, the golden sunshine of September invites visitors to savor the last hints of warmth before the crisp chill of fall settles in.
In September, Konstancin-Jeziorna experiences a noticeable shift in sunny weather, with a 39% chance of sunshine that marks a transition from the warmer summer months. This figure aligns more closely with the sunny probabilities observed in April and May, showcasing a resilience in pleasant weather as the season begins to cool. As the chance of sun starts to climb after a dip in August, September stands out as a promising time for outdoor activities, just before the sunniness peaks again in October at 45%. Overall, while a mix of sun and clouds is to be expected, September offers a delightful blend of warmth and sunlight, perfect for enjoying the early autumn colors.
As summer fades into autumn, September in Konstancin-Jeziorna offers a balanced 12 hours of daylight, a gentle decline from the sun-drenched 16 hours of June and July. This month acts as a bridge, gracefully transitioning from the long, vibrant days of summer toward the shorter, cozier hours of fall. Following the peak of daylight in mid-summer, September's sunlight remains generous, providing ample time for outdoor activities and enjoying the changing colors of nature. However, as the month progresses, daylight begins its retreat, hinting at the approaching chill of October, which will see only 10 hours of sunshine. This rhythmic ebb and flow of sunlight not only marks the passage of seasons but also enriches the local landscape with the warm hues of early autumn.
As September graces Konstancin-Jeziorna, the wind begins to pick up slightly, averaging 3.2 m/s (7 mph)—a gentle breeze that hints at the changing seasons. This increase marks a transition from the calmer winds of summer, where July and August both lingered around 2.6 m/s (6 mph), to the more invigorating gusts that October promises with an uptick to 3.8 m/s (9 mph). Notably, September's wind speed reflects a gradual increase from the summer months, indicating a shift towards the vibrant autumn air that invigorates the landscape. As the year progresses, wind speeds remain relatively stable, hovering around the 3.3 to 3.9 m/s range in the final months. Thus, September serves as a refreshing prelude to the brisk winds of fall, making it an ideal time for outdoor explorations in this picturesque Polish town.
Weather in Konstancin-Jeziorna varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Konstancin-Jeziorna, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January in Konstancin-Jeziorna present stark contrasts in weather. September experiences milder temperatures, with lows around 1°C (35°F), an average of 15°C (59°F), and highs reaching up to 31°C (87°F). The month also sees a moderate amount of rainfall, totaling 79 mm (3.1 in) over 12 days, accompanied by a relatively comfortable humidity level of 68%.
In comparison, January is marked by much colder conditions, featuring minimum temperatures plummeting to -21°C (-5°F), an average of 0°C (32°F), and a maximum of only 11°C (52°F). Precipitation is lower at 41 mm (1.6 in) over 10 days, but humidity is significantly higher at 91%, contributing to a chillier atmosphere. For more detailed insights, you can check out Konstancin-Jeziorna weather in January.
September and February present stark contrasts in weather conditions. In September, temperatures range from a minimum of 1°C (35°F) to a maximum of 31°C (87°F), with an average of 15°C (59°F). This month sees about 79 mm (3.1 in) of precipitation over 12 days and a humidity level of 68%. In contrast, February experiences much colder temperatures, with a minimum of -19°C (-1°F) and a maximum of 18°C (64°F), leading to an average of just 1°C (34°F). Precipitation decreases to 44 mm (1.7 in) across 10 days, accompanied by a higher humidity of 89%. For more detailed information, you can check the Konstancin-Jeziorna weather in February.
September and March present notably contrasting weather patterns. In September, temperatures range from a minimum of 1°C (35°F) to a maximum of 31°C (87°F), with an average of 15°C (59°F). This month experiences about 79 mm (3.1 in) of precipitation over 12 days, making it a relatively wetter time with a humidity level of 68%. In contrast, March sees colder temperatures, dipping as low as -17°C (1°F) and peaking at 19°C (67°F), while averaging only 4°C (39°F). Precipitation is significantly lower at 40 mm (1.6 in) over 11 days, but the humidity is higher at 86%. For more detailed information about March weather, you can visit Konstancin-Jeziorna weather in March.
When comparing the weather in September to that in April, notable differences emerge in both temperature and precipitation patterns. September features a warmer temperature range, with minimums around 1°C (35°F) and maximums peaking at 31°C (87°F), averaging 15°C (59°F). In contrast, April is cooler, starting with a minimum of -5°C (24°F) and averaging only 9°C (48°F), while maximums reach 28°C (82°F). Precipitation levels also differ, as September sees 79 mm (3.1 in) over 12 days, compared to April’s lower 39 mm (1.5 in) over 9 days. Humidity is slightly higher in April at 76%, compared to 68% in September. For more detailed insights about April weather, you can visit Konstancin-Jeziorna weather in April.
In comparing the weather between September and May, September generally exhibits a wider temperature range, with minimums of 1°C and maximums reaching up to 31°C, averaging around 15°C. Meanwhile, May starts off with cooler temperatures, experiencing minimums of -3°C and a slightly lower maximum of 30°C, averaging 14°C. Both months experience similar precipitation levels, with September having 79 mm over approximately 12 days and May slightly higher at 81 mm over 13 days. Additionally, September's humidity is notably higher at 68%, compared to May's 58%. For more insights on weather trends, you can check Konstancin-Jeziorna weather in May.
In comparing the weather of September and June, we see distinct differences in temperature, precipitation, and humidity. September typically experiences a wider temperature range, with minimums dropping to around 1°C (35°F) and maximums reaching up to 31°C (87°F), resulting in an average temperature of 15°C (59°F). In contrast, June offers warmer conditions, with minimums around 6°C (43°F) and maximums peaking at 35°C (96°F), leading to a higher average temperature of 20°C (68°F). Rainfall is also notable, with September seeing 79 mm (3.1 in) of precipitation over 12 days, while June has slightly less at 65 mm (2.5 in) over 10 days. Furthermore, humidity is higher in September at 68%, compared to June’s 56%, contributing to a more humid feel during the early autumn month. For more detailed insights, check out Konstancin-Jeziorna weather in June.
When comparing the weather in September and July, we notice some distinct differences. September experiences a wider temperature range with a minimum of 1°C (35°F) and a maximum of 31°C (87°F), averaging 15°C (59°F). In contrast, July typically has milder temperatures, with a minimum of 8°C (47°F) and a maximum of 34°C (94°F), averaging 20°C (68°F). Precipitation levels are quite similar, with September receiving 79 mm (3.1 in) over 12 days and July slightly higher at 82 mm (3.2 in) across 14 days. Additionally, September's humidity is higher at 68%, compared to July's 56%. For a more detailed look at July's weather, visit Konstancin-Jeziorna weather in July.
In September, temperatures range from a chilly 1°C (35°F) at night to a warm 31°C (87°F) during the day, with an average of 15°C (59°F). This month brings about 79 mm (3.1 in) of precipitation over 12 days, contributing to a higher humidity level of 68%. In contrast, August offers significantly milder temperatures, with a minimum of 8°C (46°F), an average of 20°C (68°F), and a maximum of 35°C (95°F). Precipitation in August is slightly higher at 94 mm (3.7 in) across 11 days, but the humidity remains lower at 55%. For more detailed insights into the weather trends, visit Konstancin-Jeziorna weather in August.
September and October weather demonstrate a distinct transition from the warmth of late summer to the chill of autumn. In September, temperatures range from a minimum of 1°C (35°F) to a maximum of 31°C (87°F), with an average of 15°C (59°F). The month experiences 79 mm (3.1 in) of precipitation over 12 days, alongside a moderate humidity level of 68%. In contrast, October sees cooler temperatures, with a minimum of -1°C (30°F) and a maximum of 24°C (75°F), averaging around 10°C (51°F). While precipitation is slightly lower at 71 mm (2.8 in), it still falls over the same number of rainy days, but humidity rises to 84%, creating a crisper and more humid atmosphere. For more detailed insights, you can check Konstancin-Jeziorna weather in October.
September and November present quite different weather patterns. In September, temperatures can range from a chilly 1°C (35°F) at night to a warm 31°C (87°F) during the day, with an average of 15°C (59°F). This month experiences significant humidity at 68% and receives about 79 mm (3.1 inches) of precipitation over 12 days. In contrast, November sees a drop in temperatures, with nighttime lows plummeting to -6°C (21°F) and daytime highs reaching only 19°C (67°F), averaging just 5°C (42°F). The month is much drier, with only 33 mm (1.3 inches) of rain over 7 days, but the humidity rises to a notable 89%. For more detailed insights, check out Konstancin-Jeziorna weather in November.
In September, the weather in Konstancin-Jeziorna is marked by a significant temperature range, with minimums hitting 1°C (35°F) and maximums reaching up to 31°C (87°F). The average temperature sits comfortably at around 15°C (59°F), and the month experiences 79 mm (3.1 in) of precipitation over 12 days, coupled with a humidity level of 68%. In contrast, December ushers in much colder conditions, with temperatures plummeting to a minimum of -14°C (7°F) and averaging just 2°C (35°F). The maximum temperature in December only reaches 13°C (55°F), and the total precipitation decreases to 50 mm (2.0 in) over 11 days, although humidity rises significantly to 91%. This stark difference in weather is emblematic of the transitioning seasons, making September a month of warmth and activity while December brings a chill and often a stillness to the atmosphere. For more details, check out Konstancin-Jeziorna weather in December.
As summer gives way to autumn, September in Konstancin-Jeziorna presents a unique blend of warm days and cool evenings. Unlike the peak heat of summer, temperatures can dip significantly, offering a refreshing contrast, while rainfall becomes more frequent, resulting in increased humidity. The month brings an average of 12 days of precipitation, making it one of the wetter periods of the year. This transition not only influences the local landscape, bringing vibrant autumn colors, but also invites residents and visitors to enjoy the beauty of a changing season. For a comprehensive overview of the region's climate throughout the year, visit Konstancin-Jeziorna Climate.