Last updated: February 26, 2025
September in Vienna, Austria offers a delightful blend of mild temperatures and occasional rain, making it a perfect time to explore the city. With maximum daytime highs reaching 32°C (89°F) and cooler nights dipping to 2°C (35°F), visitors can experience a refreshing range of weather. The average temperature settles at a comfortable 17°C (62°F), ideal for strolls along the Danube or through the historic streets. Expect about 77 mm (3.0 in) of precipitation over 10 days, contributing to the city's lush scenery, while a humidity level of 75% adds a hint of freshness to the air. Whether soaking in the culture or enjoying the vibrant outdoor cafés, September provides a charming backdrop for any traveler.
September in Vienna marks the transition from summer's warmth to the cooler embrace of autumn. With minimum temperatures around 2°C (35°F) and averages peaking at 17°C (62°F), the month invites a comfortable atmosphere ideal for outdoor activities. Daytime highs can still reach a pleasant 32°C (89°F), reminiscent of summer, allowing locals and tourists alike to enjoy the city's scenic parks and vibrant streets. However, as the month progresses, there's a noticeable drop in temperature compared to the sizzling summer months of July and August, indicating the approaching chill of fall. Overall, September offers a delightful blend of warmth and coolness, painting Vienna in beautiful hues as it prepares for its colorful autumn.
September in Vienna marks a transitional period as summer yields to autumn, reflected in the precipitation patterns of the month. With 77 mm (3.0 in) of rainfall accumulating over 10 days, this marks a slight increase from the drier months of July and August, setting the stage for the upcoming wetter season. The arrival of cooler temperatures often brings more frequent showers, which can be seen as the city prepares for October's 47 mm (1.8 in). Interestingly, September's rainfall aligns with the monthly average for the year, suggesting a consistency in Vienna's climate as seasonal changes occur. This month often provides a refreshing contrast, as the gentle rain rejuvenates outdoor spaces, inviting residents and visitors alike to enjoy the picturesque scenery blanketed in autumn hues.
As summer transitions to autumn, September in Vienna reveals a gentle decline in humidity, averaging around 75%. This gradual decrease from the warmer months highlights a shift in the climate, as July and August maintain a steady 76% humidity. The trend continues into October, where moisture levels rise again, reaching 85%. Notably, the year begins with high humidity levels, peaking at 90% in January, before generally descending until September. As the city prepares for cooler months ahead, this slight drop in humidity offers a refreshing reprieve, paving the way for the cozier, more humid conditions of fall.
As summer transitions to autumn in Vienna, the UV Index in September reflects a slight decline, registering at 6 and indicating a high exposure category. This suggests that while the sun's intensity is tapering off from the recent months, caution is still warranted for outdoor activities, with a recommended burn time of 25 minutes. Notably, the UV Index has steadily dropped from the peaks of 8 in the summer months, presenting a trend towards milder light exposure as the year progresses. As you enjoy Vienna's beautiful early autumn days, it's wise to stay informed and protect your skin. For more details, check the full Vienna UV Index.
UV Risk Categories
As summer fades and autumn begins to whisper in, September in Vienna still basks in a generous 316 hours of sunshine. This marks a delightful transition from the peak summer warmth of July (with 427 hours) and August (which enjoyed 384 hours) to a more subdued yet still radiant brightness. The sun’s presence begins to wane as October approaches, where it will yield just 274 hours, but September offers a lovely compromise, allowing locals and visitors to relish the last lingering rays before the cooler months. This month not only embraces the golden hues of early fall but also signifies a gentle, sun-kissed farewell to summer in the enchanting city of Vienna.
As summer transitions into autumn, September in Vienna boasts a 50% chance of sunny weather, making it a delightful time to explore the city. This month strikes an interesting balance, as it aligns closely with July's 46% and October's 49%, indicating a gradual shift in weather patterns. The sunny probability in September represents a notable recovery from the lower percentages seen in previous months, such as April and May, which fluctuated around the mid-30s. With a fair likelihood for sun-soaked days, September invites both locals and tourists to enjoy Vienna’s stunning parks, vibrant streets, and outdoor cafés under a pleasant sky.
As September arrives in Vienna, the summer's twilight begins to yield to the crisp embrace of autumn, bringing with it a gradual decline in daylight. The city basks in 12 hours of daylight this month, a noteworthy drop from the sun-drenched heights of 16 hours in June and 15 hours in July. However, this decrease is less steep compared to the dramatic shifts seen in the winter months, where daylight dwindles to just 8 hours by January. September serves as a gentle transition, inviting residents and visitors alike to savor the lingering warmth and beauty of early fall, while still enjoying a substantial amount of sunlight before the days shorten further.
As summer transitions to autumn in Vienna, September brings with it a notable drop in average wind speed, settling at a gentle 2.7 m/s (6 mph). This fresh breeze contrasts with the brisker gusts of earlier months like May, which peaks at 4.2 m/s (9 mph). The city's climate begins to cool, mirroring the waning warmth of summer while maintaining a charming, airy atmosphere. In fact, September's tranquil winds set a serene backdrop for exploring Vienna's vibrant streets, ushering in a period where the city’s rich history and stunning architecture can be enjoyed at a leisurely pace. As the year progresses, wind speeds gradually pick up again in October, creating a rhythm that reflects the changing seasons and the enduring charm of this beautiful city.
The weather in Vienna 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 Vienna and find detailed weather information for every month.
September and January in Vienna showcase strikingly different weather patterns. September enjoys a mild temperature range from a minimum of 2°C (35°F) to a maximum of 32°C (89°F), with an average of 17°C (62°F). In contrast, January is much colder, with temperatures dipping between -12°C (10°F) and a high of 16°C (60°F), averaging just 1°C (34°F). While September experiences a higher level of warmth and slightly more precipitation at 77 mm (3.0 in) over 10 days, January has considerably less rainfall at 36 mm (1.4 in), yet it tends to be more humid with a humidity level of 90%. For those interested in a closer look at the January weather, you can find more details here: Vienna weather in January.
The weather in September and February presents a stark contrast in Vienna. September experiences a wide temperature range, with minimums around 2°C (35°F) and maximums reaching up to 32°C (89°F), averaging at 17°C (62°F). It also sees higher precipitation levels, totaling 77 mm (3.0 in) across approximately 10 days, accompanied by a humidity of 75%. In contrast, February is much colder, with temperatures ranging from a chilly -11°C (12°F) to a mild 18°C (65°F), averaging only around 3°C (38°F). Precipitation drops significantly to 31 mm (1.2 in) over about 9 days, and humidity is higher at 87%. For more detailed insights on the weather during this month, you can check Vienna weather in February.
In September, the weather in Vienna is notably warmer, with average temperatures around 17°C (62°F) and highs reaching up to 32°C (89°F). The month is characterized by higher humidity levels at 75% and more substantial rainfall, totaling 77 mm (3.0 in) over about 10 days. In contrast, March brings cooler conditions, with temperatures ranging from a chilly -13°C (9°F) to a more moderate 22°C (73°F), and an average of just 6°C (43°F). Although it experiences slightly less precipitation at 37 mm (1.5 in) over 9 days, humidity is higher at 85%. For detailed insights into March weather in Vienna, you can visit Vienna weather in March.
September and April present contrasting weather patterns, with each month showcasing unique characteristics. In September, temperatures range from a mild 2°C (35°F) to a warm maximum of 32°C (89°F), accompanied by average highs of 17°C (62°F). This month experiences more rainfall, with 77 mm (3.0 in) over approximately 10 days, while humidity hovers around 75%. In contrast, April brings cooler temperatures, with a minimum of -5°C (23°F) and a maximum of 28°C (83°F), averaging 11°C (52°F). It has less precipitation, totaling 38 mm (1.5 in) over 8 days and slightly higher humidity at 78%. For a closer look at the specific conditions in April, you can visit Vienna weather in April.
When comparing the weather in September and May, both months exhibit mild to warm temperatures, but with some notable differences. September offers a wider temperature range, with minimums dipping to 2°C and maximums peaking at 32°C, making it feel quite summery despite averaging 17°C. In contrast, May has slightly cooler average temperatures at 15°C, with minimums around 0°C and maximums reaching up to 31°C.
In terms of precipitation, May is wetter with 84 mm spread over 15 days, compared to September's 77 mm over 10 days, suggesting that May might experience more frequent rain showers. However, both months maintain relatively high humidity levels, with September at 75% and May at 73%. For more detailed insights, you can visit this link: Vienna weather in May.
In comparing the weather of September and June, we observe distinct differences in temperature and climate. September experiences a broader temperature range, with a minimum of 2°C (35°F) and a maximum of 32°C (89°F), resulting in an average temperature of 17°C (62°F). This month also sees slightly more precipitation at 77 mm (3.0 in) over 10 days, accompanied by a humidity level of 75%.
In contrast, June offers milder minimum temperatures at 8°C (46°F) and a high of 34°C (94°F), leading to a warmer average of 21°C (70°F). The precipitation is slightly less in June at 70 mm (2.8 in), also spread over 10 days, with humidity levels remaining similar at 77%. For a more detailed look at the weather patterns in June, you can check Vienna weather in June. Overall, June tends to be warmer and slightly drier than September, making it a more appealing month for outdoor activities.
September weather in Vienna exhibits a wider temperature range, with minimums dropping to 2°C (35°F) and maximums reaching up to 32°C (89°F), compared to July's milder lows of 9°C (48°F) and highs of 36°C (97°F). While both months receive similar amounts of precipitation—77 mm (3.0 in) for September and 74 mm (2.9 in) for July—the number of rainy days is slightly higher in July, with 13 days of rain compared to September's 10. Humidity levels remain comparable between the two months, with July experiencing 76% humidity and September at 75%. For more details on July's weather patterns, you can visit Vienna weather in July.
In comparing the weather between August and September, we observe notable differences in temperature and overall comfort. September experiences cooler temperatures, with a minimum of 2°C and an average of 17°C, significantly lower than August's minimum of 9°C and average of 22°C. While both months receive similar amounts of precipitation—77 mm in September and 76 mm in August—September has slightly fewer rainy days at 10 compared to August's 11. Humidity remains high in both months, with September at 75% and August at 76%. For a more detailed look at August weather, you can visit Vienna weather in August.
In September, the weather is characterized by a wider temperature range, with minimums around 2°C (35°F) and maximums reaching up to 32°C (89°F), resulting in a warm average of 17°C (62°F). In addition, the month experiences significant rainfall, totaling 77 mm (3.0 inches) over about 10 days, with humidity levels around 75%.
In contrast, October sees a noticeable drop in temperatures, with minimums dropping to 0°C (32°F) and an average temperature of only 12°C (53°F). The overall maximum temperature in October reaches 25°C (78°F). Rainfall is also less frequent, with only 47 mm (1.8 inches) over about 8 days, accompanied by a slight increase in humidity to 85%. For more detailed insights, you can check Vienna weather in October.
September tends to be much warmer than November, with temperatures ranging from a minimum of 2°C (35°F) to a maximum of 32°C (89°F) and an average of 17°C (62°F). In contrast, November sees cooler temperatures, with a range from -5°C (22°F) to a maximum of 19°C (67°F) and an average of 6°C (43°F). Additionally, September experiences more precipitation, totaling 77 mm (3.0 in) over approximately 10 days, while November has less rainfall at 46 mm (1.8 in) across 9 days. The humidity also increases in November, reaching 90%, compared to 75% in September. For more detailed information, check out Vienna weather in November.
September offers a wide range of temperatures, with a minimum of 2°C (35°F) and an average of 17°C (62°F), peaking at 32°C (89°F). This month sees relatively moderate precipitation of 77 mm (3.0 in) over about 10 days, with humidity levels at 75%. In contrast, December's weather is much cooler, featuring temperatures that range from a minimum of -5°C (22°F) to a maximum of 14°C (57°F), with an average of just 3°C (37°F). While December experiences slightly less precipitation at 57 mm (2.2 in) over 11 days, the humidity is notably higher at 91%. For a deeper understanding of what to expect during this chilly month, check out Vienna weather in December.
As September unfolds in Vienna, the city experiences a fascinating transition marked by warm days and cooler nights. While the maximum temperature can reach a balmy 32°C, the average settles around a comfortable 17°C, nudging residents and visitors alike to enjoy outdoor activities. Unlike the summer months, where heat prevails, September introduces a refreshing change with occasional rainfall—about 77 mm spread across 10 days—coupled with a moderate humidity of 75%. This blend of warmth and crispness creates a perfect backdrop for exploring the city's rich cultural gems. For a more in-depth understanding, visit Vienna Climate.