Last updated: August 27, 2025
In September, Bydgoszcz, Poland experiences a diverse range of weather conditions. Temperatures can soar to a maximum of 33°C (92°F), while the average hovers around 15°C (59°F), providing a pleasant transition into autumn. However, cooler spells are not unusual, with minimum temperatures dipping to 2°C (36°F). The month is characterized by 64 mm (2.5 in) of precipitation, spread over about 10 days, resulting in a humidity level of 75% that enhances the crisp feel of the air. This blend of warmth and moisture creates a dynamic weather tapestry, inviting both outdoor adventures and cozy indoor retreats.
September in Bydgoszcz, Poland marks a transitional phase as summer gradually gives way to autumn. With temperatures ranging from a chilly 2°C (36°F) to a warm high of 33°C (92°F), the month offers a delightful mix of mild days and cool evenings. The average temperature settles around 15°C (59°F), providing a comfortable backdrop for outdoor activities. As the month progresses, you may notice a decline in the mercury, signaling the impending cooler months, yet September remains a vibrant time with potential for warm spells. Enjoy the lingering warmth while it lasts, as the crisp embrace of autumn is just around the corner.
September in Bydgoszcz, Poland, marks a noteworthy transition in the weather patterns, bringing an average precipitation of 64 mm (2.5 in) over 10 days. This amount aligns closely with the rainfall observed in the previous month of August, which recorded 63 mm (2.5 in). However, September's precipitation is notably higher than the 36 mm seen in April and reflects a gradual increase from the drier earlier months of the year. As autumn sets in, the precipitation tends to stabilize, often hovering around 60 mm to 70 mm in the subsequent months, indicating a shift toward wetter conditions. This trend hints at an impending seasonal change, as the lush greens of summer give way to the crisp chill of fall, while the frequency of rain remains fairly consistent across the month.
As summer gives way to autumn in Bydgoszcz, September marks a notable shift in humidity levels, averaging 75%. This month sees a moderate increase compared to the drier midsummer months of June and July, which hovered around 61% and 63% respectively. However, September’s humidity is still significantly lower than the winter months, where figures climb back to the high 80s and early 90s. This transitional period highlights the beginning of a shift towards greater moisture in the air as the city prepares for the cooler, more humid conditions of autumn and winter. The general trend from May’s comfortable 63% to September’s more substantial levels reflects the interplay of seasonal changes, with residents experiencing a gradual embrace of the crisper, yet more humid, fall climate.
As September rolls into Bydgoszcz, Poland, the UV Index reflects a transition to more moderate sun exposure, registering at 5. This marks a slight decline from the peak summer months, where UV levels reached a blazing 8 in June and July. With a moderate exposure category, residents and visitors can expect a burn time of about 30 minutes in the sun—a reminder to enjoy the outdoors while still taking precautions. As we shift towards autumn, the UV Index trends downward, signaling an end to the intense sun exposure of summer. For more details on the UV Index throughout the year, check out Bydgoszcz UV Index.
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As summer wanes, September in Bydgoszcz, Poland, brings a delightful 292 hours of sunshine, continuing the trend of bright and vibrant days characteristic of the late summer months. While this marks a slight drop from the peak sunshine of June and July, with their impressive 424 and 415 hours respectively, it's still a well-lit month that fosters a pleasant transition into autumn. May and June set the stage for radiant days, and although the sunlight decreases in October to 244 hours, September still benefits from a generous amount of daylight, offering ample opportunities to enjoy the city's scenic beauty as the leaves begin to turn. This gradual decline through the fall months reflects a natural rhythm, inviting residents and visitors alike to savor the last golden days of the season.
In Bydgoszcz, Poland, September experiences a 36% chance of sunny weather, making it a moderately bright month as summer transitions into autumn. This figure aligns closely with the sunny probabilities observed in April and July, both hovering around the low to mid-30s. As the summer sun begins to wane, September offers a blend of lingering warmth and increasing cloud cover, creating a pleasant yet unpredictable climate. This trend highlights a gradual shift from the more robust sunshine in June, which boasts a peak 56%, indicating that while sunny days remain possible, they are becoming less frequent as autumn approaches. Overall, September's weather embodies a delicate balance, appealing to those who enjoy milder temperatures with occasional sunny spells.
As September unfolds in Bydgoszcz, Poland, daylight begins to wane, offering around 12 hours of sunlight. This marks a notable decrease from the peak summer months of June and July, which bask in 16 hours of glorious daylight. The transition is a clear reminder of the seasonal shift, with September's hours sliding down from the vibrant, sun-drenched days of August that provide 14 hours. Although the days are still considerably longer than those in the depths of winter, with January and November barely mustering 8 hours, the gradual reduction signals the impending arrival of autumn. As nature prepares for its seasonal change, the balance of light and darkness begins to reshape Bydgoszcz's enchanting landscape.
As the summer winds down, September in Bydgoszcz, Poland, welcomes a gentle breeze with an average wind speed of 3.3 m/s (7 mph). This slight drop follows a balmy August, mirroring the transition from warmer days to the crispness of autumn. The wind speed stays consistent, reflecting a sense of calm before the seasonal shift, but it's a precursor to the stronger winds of October, which pick up to 4.0 m/s (9 mph). This pattern underscores September’s role as a bridge between the warm, lazy days of summer and the invigorating gusts of fall, inviting residents and visitors alike to enjoy the changing landscape with a refreshing breath of fresh air.
Weather in Bydgoszcz varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Bydgoszcz, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present contrasting weather patterns. September sees a wide temperature range, from a chilly 2°C (36°F) at night to a warm 33°C (92°F) during the day, with an average of 15°C (59°F). While it experiences significant rainfall, totaling 64 mm (2.5 in) over 10 days, the humidity levels stand at a moderate 75%. In stark opposition, January is characterized by its frigid temperatures, with a minimum of -18°C (-1°F) and a maximum of only 12°C (53°F), resulting in an average of 1°C (33°F). Despite having less precipitation at 41 mm (1.6 in) over the same number of days, the humidity is higher at 91%. This dramatic shift in weather underscores the transition from the warmth of late summer to the depths of winter. For more detailed insights, you can check Bydgoszcz weather in January.
September and February present stark contrasts in weather conditions. In September, temperatures range from a mild 2°C (36°F) at night to a warm 33°C (92°F) during the day, with an average of 15°C (59°F). The month experiences 64 mm (2.5 inches) of precipitation over approximately 10 days, coupled with a humidity level of 75%. In contrast, February is much colder, with nighttime lows plummeting to -17°C (2°F) and daytime highs reaching only up to 17°C (62°F), resulting in an average of just 1°C (34°F). This month sees less precipitation, at 40 mm (1.6 inches) over about 8 days, but the humidity is higher, at 90%. For more details, check out Bydgoszcz weather in February.
In September, the weather tends to be much warmer than in March, with temperatures ranging from a minimum of 2°C (36°F) to a maximum of 33°C (92°F), resulting in an average of 15°C (59°F). The month experiences moderate precipitation of 64 mm (2.5 in) over about 10 days, along with a humidity level of 75%. In contrast, March is significantly cooler, with temperatures ranging from a chilly -16°C (4°F) to a milder 18°C (65°F), and an average temperature of only 4°C (39°F). Precipitation is lower at 41 mm (1.6 in) over approximately 11 days, but the humidity is slightly higher at 87%. For a detailed overview of the climate, you can check Bydgoszcz weather in March.
When comparing the weather in September and April, notable differences emerge. September tends to be warmer, with average temperatures reaching 15°C (59°F) and a maximum of 33°C (92°F), while April sees cooler averages, peaking at 26°C (79°F) with a lower average of 8°C (47°F). Additionally, September experiences higher precipitation levels at 64 mm (2.5 in) over about 10 days, compared to April's 36 mm (1.4 in) over 9 days. Humidity levels are slightly higher in April at 79%, while September maintains a humidity of 75%. For more detailed information, you can visit Bydgoszcz weather in April.
September weather is characterized by a wider temperature range, with minimums reaching 2°C (36°F) and maximums soaring up to 33°C (92°F), making it feel quite warm at times. In contrast, May typically experiences cooler temperatures, with minimums around 0°C (31°F) and a maximum of 28°C (84°F). While September has an average rainfall of 64 mm (2.5 in) over approximately 10 days, May sees slightly more precipitation at 76 mm (3.0 in) across about 13 days. Additionally, September has higher humidity levels at 75%, compared to the 63% humidity typically found in May. For more detailed information, you can visit Bydgoszcz weather in May.
When comparing the weather in September and June, we notice distinct differences in temperature, precipitation, and humidity. September experiences a wider temperature range, with a minimum of 2°C (36°F) and a maximum of 33°C (92°F), leading to an average of 15°C (59°F). In contrast, June tends to be warmer overall, starting at a minimum of 5°C (41°F) and peaking at 35°C (94°F), resulting in a higher average of 19°C (66°F). Rainfall is fairly similar in both months; September sees approximately 64 mm (2.5 in) over 10 days, while June has slightly more precipitation at 69 mm (2.7 in) over just 9 days. Additionally, the humidity in September is notably higher at 75%, compared to the 61% in June. For more detailed information about the weather in June, you can visit Bydgoszcz weather in June.
In comparing the weather of September and July, notable differences emerge in temperature and precipitation patterns. September experiences a wider range of temperatures, with a minimum of 2°C (36°F) and a maximum of 33°C (92°F), averaging 15°C (59°F). In contrast, July has a milder minimum temperature of 8°C (46°F) and a slightly higher maximum of 35°C (96°F), averaging 19°C (67°F). Additionally, July sees more rainfall, with 100 mm (3.9 in) over 12 days, compared to September's 64 mm (2.5 in) spread across 10 days. Furthermore, humidity is higher in September at 75%, while July maintains it at a lower 63%. For more detailed information, you can visit Bydgoszcz weather in July.
In comparing the weather of September to August, we observe a notable shift in temperatures and humidity levels. September experiences a wider temperature range, with a minimum of 2°C and an average of 15°C, compared to August's minimum of 6°C and average of 19°C. Both months see similar maximum temperatures, peaking at 33°C (91°F in August and 92°F in September). However, September is slightly wetter, with 64 mm of precipitation over 10 days, mirroring August's 63 mm in the same duration but with lower humidity at 75% compared to 65% in August. For more details, you can check Bydgoszcz weather in August.
September weather in Bydgoszcz tends to be warmer, with average temperatures around 15°C (59°F) and maximums reaching up to 33°C (92°F). The month experiences a moderate level of precipitation at 64 mm (2.5 in) over about 10 days, with humidity around 75%. In contrast, October marks a noticeable shift towards cooler conditions, with average temperatures dropping to 10°C (51°F) and maximums peaking at 23°C (73°F). Precipitation is slightly lower at 62 mm (2.5 in), but it occurs over an additional day, resulting in increased humidity at 85%. For more details on October's specific weather patterns, you can visit Bydgoszcz weather in October.
September and November showcase striking contrasts in weather conditions. In September, temperatures range from a mild 2°C (36°F) minimum to a warm 33°C (92°F) maximum, with an average of 15°C (59°F), making it a month that often feels like summer's last hurrah. Meanwhile, November sees a notable drop in temperature, with minimums plunging to -5°C (24°F) and a maximum of only 18°C (64°F), averaging around 6°C (43°F). Additionally, September experiences a higher precipitation amount of 64 mm (2.5 in) over 10 days, while November is slightly drier with 39 mm (1.5 in) over 8 days, though the humidity rises to 90%. For more detailed information, you can check Bydgoszcz weather in November.
September brings a warm and varied climate, with temperatures ranging from a cool 2°C (36°F) at night to a sweltering 33°C (92°F) during the day. The average temperature sits at a comfortable 15°C (59°F), alongside a moderate level of humidity at 75%. Rainfall is fairly common, with 10 days of precipitation totaling 64 mm (2.5 in).
In contrast, December ushers in much colder weather, characterized by minimum temperatures plummeting to -18°C (0°F) and a maximum of just 12°C (55°F). The average temperature drops significantly to 2°C (35°F), and humidity rises to a high 93%. While December experiences slightly less precipitation at 44 mm (1.7 in), it has an additional rainy day, totaling 11 days of precipitation. For more detailed information, you can check Bydgoszcz weather in December.
As September rolls into Bydgoszcz, the weather begins to shift significantly from the summer months. Temperatures cool down, offering a refreshing contrast to the heat of August, with mild days and crisp evenings becoming the norm. While precipitation increases slightly, bringing occasional rainy days that nourish the lush landscapes, the air remains humbly humid. This month invites a transition into autumn, where vibrant foliage starts to paint the city in warm hues. For those interested in a detailed look at the conditions throughout the year, you can explore Bydgoszcz's climate further at Bydgoszcz Climate.