Last updated: February 26, 2025
September in Austria is a month of transition, characterized by temperatures that range from a maximum of 27°C (81°F) to a chilly minimum of -2°C (28°F). The average temperature settles at a comfortable 13°C (56°F), making it an ideal time for outdoor exploration. However, be prepared for precipitation—with 156 mm (6.2 in) of rain falling over approximately 15 days, humidity lingers around 74%, creating a distinctively fresh atmosphere. Whether you’re enjoying the early autumn scenery or preparing for a rain shower, September offers a unique blend of experiences in the heart of Austria.
As September rolls into Austria, the landscape begins to transition from the warmth of summer to the crispness of autumn. Temperatures range from a minimum of -2°C (28°F) to a pleasant maximum of 27°C (81°F), showcasing a mild average of 13°C (56°F). This month marks a significant shift, with warm days still allowing for outdoor activities while cool nights signal the approaching winter. The gradual cooling trend is evident, as September's temperatures are a gentle reminder of the cold months to come, providing a perfect backdrop for enjoying the stunning autumn foliage that the region is famous for.
September in Au, Austria, experiences a notable shift as summer transitions to autumn, marked by precipitation totaling 156 mm (6.2 in) over 15 days. This increase builds on the substantial rainfall seen in August (208 mm), reflecting a trend of higher precipitation leading into the fall months. The frequency of rainy days holds steady compared to the previous month, indicating an active weather pattern as the region prepares for the cooler seasons. This month stands out not only for its total rainfall but also as a bridge between the lush greenery of summer and the crispness of fall, embodying the dynamic nature of Au’s climate.
In September, Au, Austria experiences a respite from the summer's warmth, with humidity levels settling at 74%. This marks a slight increase from the drier months of July and August, which recorded 74% and 68% respectively. As the season transitions into autumn, it’s evident that humidity begins to rise once more, setting the stage for the cooler months ahead. Interestingly, while September's humidity is lower than the lofty heights of January (91%) and February (87%), it lays the groundwork for October’s noticeable spike to 88%, indicating a trend of increasing moisture as the year draws to a close. Thus, September serves as a pivotal bridge, with conditions that offer a balance before the deeper embrace of autumn's humidity.
As summer transitions to autumn in Au, Austria, September witnesses a notable shift in the UV Index, dropping to 6, which places it in the high exposure category. This change reflects a gradual decrease in the sun’s intensity compared to the peak summer months, where values reached a high of 9. With a burn time of 25 minutes, it’s vital to remain mindful of sun exposure, especially during midday hours. The trend over the months reveals that while the UV Index begins to decline, protective measures are still essential as sunny days persist. For more detailed information on UV exposure throughout the year, check out Au UV Index.
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In Au, Austria, September experiences a delightful transition as it basks in an impressive 298 hours of sunshine. This month stands as a notable peak in the late summer sun, gracefully following the sun-soaked days of July and August. As autumn approaches, the daylight begins to wane, with hours dipping from the summer highs but still providing ample opportunity to enjoy the vibrant colors of the changing leaves. With September's sunshine reflecting just below the summer averages, it captures a unique balance—a time when the warmth lingers while the crispness of fall begins to hint at its arrival. This enchanting light draws visitors and locals alike to relish the breathtaking landscapes, making it an ideal month for outdoor adventures in this beautiful Austrian haven.
As September rolls into Au, Austria, the likelihood of sunny weather begins to brighten up, with a notable 48% chance of sunshine. This marks a significant improvement from the summer months, where July and August see chances of sun hovering around 34% and 31%, respectively. The transition from the peak summer season to early autumn reveals a fascinating trend – while earlier months like May and June grapple with lower sun probabilities of 26% and 39%, September emerges as one of the sunnier months of the year. This upward shift suggests that autumn in Au may offer delightful days as the landscape begins to don its seasonal hues, inviting both locals and visitors to bask in the warmth of early fall.
As summer gently fades into autumn, September in Au, Austria offers a delightful transition with approximately 12 hours of daylight. This month marks a gradual decline from the sun-drenched days of July and August, which basked in 15 hours of light, heralding the onset of shorter days. While the brightness begins to subside, September still retains the warmth of late summer, allowing locals and visitors alike to enjoy the lingering sunshine as nature prepares for the cooler months ahead. Reflecting on the year, September stands as a pivotal point, bridging the vibrant long days of summer to the cozy, shorter days of fall, enriching the landscape with a warm glow as it marches toward winter.
As September arrives in Au, Austria, the winds take a gentle turn, maintaining an average speed of 1.5 m/s (3 mph), akin to the calmer summer months. This subtle breeze is characteristic of the transitional autumn season, where the air carries a refreshing crispness, yet remains mild. Reflecting on the yearly trends, it's evident that while September joins the ranks of the calmest months, its wind patterns stand in contrast to the slightly stronger gusts recorded in both April and May. The progressive drop from the earlier summer winds also hints at the approaching chill of winter, foreshadowing the slight increase expected in October. This gentle shift in September’s winds invites both introspection and anticipation, as the landscape prepares for the vibrant hues of fall.
The weather in Au 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 Au and find detailed weather information for every month.
In September, the weather presents a mild transition from summer to autumn, with temperatures ranging from a minimum of -2°C (28°F) to a pleasant average of 13°C (56°F) and highs reaching up to 27°C (81°F). This month experiences moderate rainfall, totaling 156 mm (6.2 in) over approximately 15 days, and a humidity level of 74%. In contrast, January brings much colder conditions, with temperatures plummeting to a minimum of -21°C (-6°F) and averaging around -2°C (28°F), while the maximum rarely exceeds 10°C (51°F). Although January sees slightly less precipitation at 135 mm (5.3 in) over 13 days, the humidity level is notably higher at 91%. For a detailed look at January weather patterns, visit Au weather in January.
September's weather is generally milder, with temperatures ranging from a minimum of -2°C (28°F) to a maximum of 27°C (81°F) and an average of 13°C (56°F). In contrast, February experiences colder conditions, with temperatures dropping as low as -19°C (-2°F) and averaging around 0°C (33°F), peaking at 16°C (61°F). While September sees more precipitation, totaling 156 mm (6.2 in) over 15 days, February has less moisture at 112 mm (4.4 in) across 14 days, but with higher humidity at 87%. For more detailed information, you can check Au weather in February.
In September, the weather is generally milder, with average temperatures around 13°C (56°F) and a maximum reaching up to 27°C (81°F), providing a pleasant atmosphere for outdoor activities. However, it does have considerable rainfall, with 156 mm (6.2 in) across 15 days, contributing to a humidity level of 74%. In contrast, March experiences colder temperatures, with an average of 3°C (38°F) and a maximum of 18°C (64°F), yet it comes with slightly less precipitation at 125 mm (4.9 in) over 17 days, leading to a higher humidity level of 82%. This stark contrast reflects the transition from late summer warmth in September to the still-chilly, early spring conditions found in March. For more detailed information on the weather in March, check out Au weather in March.
When comparing the weather in September and April, notable differences in temperature and precipitation emerge. September tends to be warmer, with an average temperature of 13°C (56°F) and a maximum that can reach up to 27°C (81°F), while April is cooler, averaging 8°C (46°F) and peaking at 25°C (77°F). Additionally, September experiences more precipitation, totaling 156 mm (6.2 in) over 15 days, compared to April's 103 mm (4.0 in) over 13 days. Humidity levels are quite similar in both months, with September at 74% and April slightly higher at 79%. For more detailed information on the weather during April, you can check Au weather in April.
When comparing the weather in September and May, we find notable differences in temperature and precipitation patterns. September typically has a milder temperature range with a minimum of -2°C (28°F) and a maximum of 27°C (81°F), resulting in an average of 13°C (56°F). In contrast, May experiences slightly cooler temperatures, with a minimum of -7°C (20°F) and a maximum of 28°C (83°F), averaging 11°C (53°F). Rainfall is more prominent in May, with 216 mm (8.5 in) occurring across 22 days, compared to September's 156 mm (6.2 in) over 15 days. Both months share similar humidity levels at 74%, contributing to a damp, cool atmosphere. For further details, you can explore Au weather in May.
When comparing the weather in September and June, it's evident that June generally offers warmer temperatures, with minimums around 3°C (37°F) and average highs reaching up to 32°C (90°F). In contrast, September experiences cooler conditions, particularly with minimum temperatures dipping to -2°C (28°F) and an average high of 27°C (81°F). Precipitation levels are slightly higher in June, totaling 186 mm (7.3 in) over 17 days compared to September's 156 mm (6.2 in) across 15 days. Humidity levels remain similar in both months, with September at 74% and June at 75%. For more detailed information about the climate during this time, check out Au weather in June.
When comparing the weather in September and July, notable differences emerge. September features a broader temperature range, with minimums dipping to -2°C (28°F) and maximums reaching 27°C (81°F), while July presents warmer conditions, with minimums at 7°C (45°F) and maximums soaring to 33°C (92°F). Despite September having a lower average temperature of 13°C (56°F) compared to July's 17°C (63°F), both months share a consistent humidity level of 74%. Rainfall in July is also more significant, with 230 mm (9.1 in) over 20 days, compared to September's 156 mm (6.2 in) over 15 days. For a more detailed look at July's climate, visit Au weather in July.
In September, the weather takes a noticeable turn as temperatures drop significantly compared to August. The average temperature in September is around 13°C (56°F), with a minimum of -2°C (28°F) at night, while August enjoys a warmer average of 17°C (64°F) and can reach highs of 33°C (92°F). Additionally, September experiences more frequent rainfall, totaling 156 mm (6.2 in) over 15 days, compared to August's 208 mm (8.2 in) spread over 18 days. Despite the increase in precipitation, September's humidity is slightly higher at 74% compared to 68% in August. For a detailed look at the weather conditions in August, check out Au weather in August.
In September, temperatures range from a chilly -2°C (28°F) at night to a warm 27°C (81°F) during the day, with an average temperature of 13°C (56°F). The month experiences significant rainfall, with 156 mm (6.2 in) spread over 15 days and a humidity level of 74%. In contrast, October sees a decrease in average temperature to 9°C (48°F) and a maximum of 22°C (73°F), while maintaining the same minimum temperature of -2°C (29°F). Precipitation slightly decreases to 140 mm (5.5 in) over 14 days, accompanied by a rise in humidity to 88%. This shift marks a transition towards cooler conditions as the season progresses. For more details, visit Au weather in October.
September and November exhibit distinct differences in weather patterns. In September, temperatures range from a chilly minimum of -2°C to a pleasant maximum of 27°C, with an average temperature of 13°C. The month sees significant precipitation, totaling 156 mm over 15 days, and a humidity level of 74%. In contrast, November brings colder conditions, with temperatures dipping to a minimum of -10°C and averaging only 3°C, while the maximum reaches 18°C. Precipitation decreases to 86 mm, occurring over 10 days, and humidity rises considerably to 90%. For more insight into November weather, you can explore Au weather in November.
September and December present stark contrasts in weather conditions. In September, temperatures range from a minimum of -2°C (28°F) to a maximum of 27°C (81°F), with an average temperature of 13°C (56°F). The month sees a fair amount of precipitation, totaling 156 mm (6.2 in) over about 15 days, combined with a humidity level of 74%. Conversely, December is significantly colder, with a temperature range from -15°C (6°F) to 13°C (55°F), and an average of 0°C (31°F). Precipitation increases slightly to 165 mm (6.5 in) spread over 18 days, and the humidity also rises to 89%. For more detailed insights on December weather, you can visit Au weather in December.
September in Au marks a notable transition from the warmth of summer to the crispness of autumn. With a maximum temperature reaching a mild 27°C, it invites lingering days outdoors, yet the average cools to a refreshing 13°C, revealing a shift in the season. The 74% humidity adds a touch of moisture to the air, while precipitation becomes more frequent, with about 15 days of light rain totaling 156 mm. This blend of warmth and rain paints a picturesque backdrop for the vibrant foliage that begins to emerge, setting September apart from the hotter summer months. For a deeper dive into how the weather evolves throughout the year, explore Au Climate.