Last updated: February 26, 2025
In September, Passau, Germany experiences a vibrant transition into autumn, marked by a maximum temperature reaching 30°C (87°F) and an average of 15°C (59°F). However, the month can start off quite cool, with minimum temperatures dipping to 3°C (37°F). Despite this fluctuation, the humidity remains notably high at 82%, contributing to a feeling of crispness in the air. Rainfall is a common occurrence, as the city records about 70 mm (2.7 in) of precipitation over 11 days, making it essential to carry an umbrella while enjoying the early fall scenery.
In September, Passau, Germany, begins to reflect the transition from summer's warmth to autumn's embrace. With minimum temperatures hovering around 3°C (37°F) and averages reaching a comfortable 15°C (59°F), the city enjoys mild days perfect for outdoor exploration. Daytime highs can still soar to a pleasant 30°C (87°F), making it one of the last chances to savor the lingering sun. As the month progresses, the crispness in the air becomes more pronounced, indicating the forthcoming change of seasons. This blend of warmth and cooler evenings creates a captivating atmosphere, ideal for enjoying Passau’s picturesque landscapes and vibrant cultural scene before winter sets in.
September in Passau, Germany, sees a moderate precipitation level, averaging 70 mm (2.7 in) over 11 days. This marks a continuation of the relatively wet summer months, with rainfall comparable to January and March. As summer transitions into autumn, September's precipitation reflects a seasonal shift, tapering off slightly from the summer highs in May and August, which both recorded around 97 mm (3.8 in). With its balanced moisture, September sets the stage for autumn's vibrant foliage while hinting at the wetter months ahead, particularly as December often peaks at 100 mm (3.9 in). The distribution of rainy days demonstrates a consistent pattern throughout the year, creating a reliable rhythm of precipitation that enriches the region's lush landscapes.
As September rolls into Passau, Germany, the humidity settles at a comfortable 82%, marking a steadiness that mirrors the summer's end. Following a pattern established over the warmer months, the humidity levels remain relatively stable, making the transition into autumn feel mild and pleasant. While the preceding months of June, July, and August showcased identical humidity rates, September's figures maintain that softness before a notable increase in October back to 87%. This gradual fluctuation hints at the impending chill of winter, as the air begins to hold more moisture, gradually creeping back up to the higher levels experienced in the earlier winter months. Overall, September's humidity encapsulates a picturesque balance, inviting residents and visitors to enjoy the lingering warmth before the season shifts dramatically.
As summer transitions to fall, the UV Index in Passau, Germany begins to decline, reflecting a noticeable shift in sun exposure. September sees a UV Index of 6, categorized as high, which allows for about 25 minutes of safe sun exposure before the risk of burning increases. This marks a decrease from the peak summer months of June and July, where the UV Index reached 9, necessitating caution during outdoor activities. While the sun's intensity lessens, it's still important to stay vigilant as the weather remains pleasant, reminding residents and visitors alike to check the UV Index regularly for safe sun practices. For more detailed information, visit Passau UV Index.
UV Risk Categories
September in Passau, Germany, offers a delightful transition from the sultry summer months to the cooler embrace of autumn. With 298 hours of sunshine, this month enjoys a noticeable decrease compared to the peak of 420 hours in July, but still boasts a generous glow, making it an attractive time for outdoor activities. Following the vibrant summer, September’s ample daylight invites lingering strolls along the Danube and picturesque trails, highlighted by the early hints of fall foliage. As the days grow shorter, the sun transforms the historic city into a canvas of warm hues, providing a perfect backdrop for both locals and visitors alike to savor the lingering warmth before the seasonal shift.
In September, Passau, Germany, experiences a promising 51% chance of sunny weather, marking it as one of the sunniest months of the year. This notable increase in sunshine compared to the summer months of July and August, both at 37%, suggests a transition that many residents and visitors alike can appreciate. As autumn approaches, the likelihood of clear skies outshines the earlier months, notably April and May, where opportunities for sun dip to 40% and 26%, respectively. Overall, September emerges as a delightful time to bask in the sun-drenched beauty of Passau before the colder months set in, inviting all to enjoy the vibrant autumn colors under brighter skies.
As September unfolds in Passau, Germany, the days begin to transition towards shorter daylight durations, offering a gentle reminder of the approaching autumn. With 12 hours of daylight, September serves as a bridge between the long, sun-soaked days of summer and the cozy, dimly lit evenings of fall. Following the peak of 16 hours in June, daylight gradually wanes, down to 14 hours in August before tapering off further this month. This trend showcases nature's cyclical rhythm, where the vibrant energy of summer gives way to the serene beauty of autumn, creating an inviting atmosphere for reflection and appreciation of the changing seasons.
In September, Passau experiences a gentle breeze with an average wind speed of 2.1 m/s (5 mph), marking it as one of the calmer months of the year. This slight dip from August aligns with a broader trend of decreasing wind speeds as summer wanes. Throughout the year, Passau's winds generally remain moderate, with May standing out as the windiest month at 3.1 m/s (7 mph). As autumn approaches, the expected tranquility of September prepares the city for the transitional whispers of fall, with only a modest increase in wind speed anticipated as the year progresses into the crisper months of October and November.
The weather in Passau changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of September's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Passau and find detailed weather information for every month.
September and January present starkly contrasting weather conditions. In September, temperatures range from a minimum of 3°C (37°F) to a maximum of 30°C (87°F), with an average of 15°C (59°F). This month experiences about 70 mm (2.7 in) of precipitation over 11 days, accompanied by relatively high humidity at 82%. In contrast, January features a much colder climate, with temperatures dropping to a minimum of -14°C (7°F) and capping at a maximum of 13°C (55°F), averaging around 0°C (33°F). Similar to September, January sees around 70 mm (2.7 in) of precipitation, but just over 10 days, and the humidity increases to 91%. For more detailed insights, visit Passau weather in January.
September and February present distinctly different weather patterns. In September, temperatures range from a minimum of 3°C (37°F) to a maximum of 30°C (87°F), with an average temperature of 15°C (59°F). This month experiences about 70 mm (2.7 inches) of precipitation over approximately 11 days and maintains a humidity level of 82%. In contrast, February is much colder, with temperatures ranging from -14°C (7°F) to 18°C (64°F) and an average temperature of just 2°C (37°F). February sees slightly less precipitation at 61 mm (2.4 inches) over 12 days, accompanied by a higher humidity of 89%. For more detailed insights into the weather during this month, you can check Passau weather in February.
September and March display contrasting weather conditions that reflect the transition between summer and spring. In September, temperatures can range from a cool 3°C (37°F) at night to a warm 30°C (87°F) during the day, with an average of 15°C (59°F). The month experiences around 70 mm (2.7 in) of precipitation over approximately 11 days, accompanied by a relatively high humidity of 82%. In contrast, March offers a much chillier climate, with minimum temperatures dipping to -17°C (2°F) and a typical daily maximum of 21°C (70°F), averaging around 5°C (42°F). Precipitation is slightly higher at 71 mm (2.8 in) over about 13 days, while humidity edges up to 87%. For a deeper look into the weather patterns, you can visit Passau weather in March.
September and April present contrasting weather patterns, with September showcasing warmer temperatures and more variability. In September, temperatures range from a cool 3°C (37°F) to a warm 30°C (87°F), with an average of 15°C (59°F). This month experiences around 70 mm (2.7 in) of precipitation over 11 days, maintaining a high humidity level of 82%. In contrast, April has cooler temperatures that vary from a chilly -5°C (23°F) to a pleasant 27°C (80°F), with an average of 10°C (50°F). Precipitation in April is lower at 41 mm (1.6 in) over just 7 days, yet it shares the same humidity level of 82%. For more insights on April weather, you can visit Passau weather in April.
When comparing the weather in September and May, we observe some notable differences. September tends to have a wider temperature range, with minimums of 3°C (37°F) and maximums reaching up to 30°C (87°F), while May's temperatures vary from a minimum of 0°C (33°F) to a maximum of 31°C (87°F). Precipitation is also more frequent in May, with an average of 97 mm (3.8 in) across 15 days, compared to September's 70 mm (2.7 in) over 11 days. Despite this, September has a slightly higher humidity level at 82%, compared to May's 76%. For more detailed insights into May's weather, you can check Passau weather in May.
In comparing the weather between September and June, we notice distinct differences in temperature and precipitation. September experiences a wider temperature range, with minimums dropping to 3°C (37°F) and maximums reaching up to 30°C (87°F), resulting in an average temperature of 15°C (59°F). Conversely, June tends to be warmer, with minimums at 5°C (41°F) and maximums peaking at 34°C (94°F), leading to a higher average of 19°C (67°F). While both months see a similar number of rainy days—11 in September and 10 in June—June has greater overall precipitation at 97 mm (3.8 in) compared to September's 70 mm (2.7 in). Humidity levels are another point of comparison, with September slightly more humid at 82%, while June is at 80%. For more detailed insights into June weather, check out Passau weather in June.
In comparing the weather of September and July, we see notable differences in both temperature and precipitation. September experiences cooler temperatures, with a minimum of 3°C (37°F), an average of 15°C (59°F), and a maximum of 30°C (87°F), while July typically sees milder conditions with a minimum of 10°C (50°F), an average of 20°C (68°F), and a maximum of 35°C (95°F). Additionally, September has an average precipitation of 70 mm (2.7 in) over 11 days, compared to July's higher precipitation of 89 mm (3.5 in) over 14 days. Despite September’s slightly higher humidity at 82%, July remains relatively humid at 80%. For more detailed insights, you can check the information on Passau weather in July.
In comparing the weather of September and August, September experiences a wider temperature range, with minimums dropping to 3°C (37°F) and maximums reaching up to 30°C (87°F), resulting in an average temperature of 15°C (59°F). In contrast, August enjoys warmer conditions, with minimum temperatures at 8°C (46°F), average temperatures around 20°C (68°F), and maximums peaking at 35°C (95°F). August also sees slightly higher precipitation levels at 96 mm (3.8 in) over 13 days, compared to September's 70 mm (2.7 in) across 11 days. Both months share the same humidity level of 82%, indicating that despite the temperature differences, the air remains consistently moist. For more details on August weather, check out Passau weather in August.
September showcases a wider range of temperatures, with a minimum of 3°C (37°F) and a maximum that peaks at 30°C (87°F), resulting in an average of 15°C (59°F). This month sees 70 mm (2.7 in) of rainfall over 11 days, combined with a humidity level of 82%. In contrast, October experiences cooler conditions, with a minimum drop to 1°C (34°F) and a maximum of 23°C (74°F), leading to an average temperature of 10°C (51°F). The precipitation is slightly less at 67 mm (2.6 in) over the same number of days, and humidity increases to 87%. For a detailed look at October weather, visit Passau weather in October.
In September, weather conditions are notably warmer, with average temperatures around 15°C (59°F) and maximum highs reaching up to 30°C (87°F). The month experiences increased humidity at 82% and receives about 70 mm (2.7 inches) of precipitation over approximately 11 days. In contrast, November brings a significant drop in temperatures, with an average of only 5°C (41°F) and lows dipping to -4°C (25°F). Although it is drier than September, with 52 mm (2.1 inches) of precipitation over 8 days, the humidity levels rise slightly to 89%. For a more detailed look at November weather, you can check Passau weather in November.
September weather typically presents a milder range, with temperatures fluctuating from a minimum of 3°C (37°F) to a maximum of 30°C (87°F), and an average of 15°C (59°F). Rainfall is moderate at 70 mm (2.7 in) over about 11 days, accompanied by relatively high humidity at 82%. In contrast, December brings much colder conditions, with temperatures dipping to a minimum of -6°C (21°F) and a maximum of 13°C (56°F), averaging only 2°C (36°F). Rainfall increases to 100 mm (3.9 in) over 15 days, and humidity rises slightly to 92%. For more detailed insights, you can refer to Passau weather in December.
September in Passau presents a fascinating transition from the warm embrace of summer to the cooler tones of autumn. With average temperatures settling around a refreshing 15°C (59°F), it's a month that offers comfortable days blended with the crispness of early fall nights. The higher humidity at 82% coupled with occasional rainfall, averaging 70 mm over 11 days, adds a hint of moisture to the air, making it distinct from the drier summer months. As the landscape begins to shift, September beckons with its unique charm, inviting visitors to explore the rich colors and tranquility of Passau. For more details on the area's climate, check out Passau Climate.