September Weather in Innsbruck, Austria

Last updated: February 26, 2025

In September, Innsbruck experiences a delightful transition into autumn, with temperatures typically peaking at 22°C (72°F) and dipping to a brisk -7°C (20°F) at night. The average temperature hovers around a comfortable 9°C (49°F), inviting visitors to enjoy the city's stunning landscapes. However, be prepared for the rainy days ahead, as the month brings about 164 mm (6.5 in) of precipitation spread over 16 days. With an humidity level of 83%, the air carries a crisp, fresh scent, making it an ideal time for leisurely strolls through the picturesque streets of Innsbruck, framed by the majestic Alps.

September Temperature in Innsbruck

In September, Innsbruck begins to transition from the warmth of summer to the crispness of fall, reflected in its temperatures. With a minimum of around -7°C (20°F), the mornings can feel quite chilly, while the average temperature settles at a comfortable 9°C (49°F), making it ideal for outdoor exploration. The afternoons see a pleasant maximum of 22°C (72°F), inviting both locals and tourists to enjoy the stunning alpine scenery. As the month progresses, these temperatures hint at the cooler days ahead, marking a shift from the vibrant heat of July and August, while still offering a glimpse of warmth that makes early autumn in Innsbruck delightful.

September Weather in Innsbruck: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Innsbruck, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec212630384454555649413224
Data source: Temperature data for Innsbruck generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Innsbruck

September in Innsbruck, Austria typically marks a transition in the weather, with precipitation measuring an average of 164 mm (6.5 in) over 16 days of rain. This month experiences a considerable drop in rainfall compared to the peak of summer in August, which sees a hefty 233 mm (9.2 in). However, September still maintains a significant wetness, highlighting the region's shifting climate as it prepares for fall. Notably, after the heavy deluge of the previous month, the rainfall in September is part of a gradual decline leading into the drier months of October and November, making it a pivotal time for changing landscapes and preparing for the cooler seasons ahead.

September Precipitation Trends in Innsbruck

The chart displays monthly precipitation patterns in Innsbruck, with values for each month alongside September's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec1038210494202191205233164134104140
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Innsbruck

In September, Innsbruck experiences a notable transition in humidity levels, averaging 83%, which reflects a slight uptick from the summer months. After the peak humidity of 82% in July and 80% in August, September marks a return to more temperate conditions, easily embracing the crispness of early autumn. This gradual shift hints at the onset of the wetter season ahead, as humidity begins to climb back towards the 90% mark that characterizes the upcoming months. Overall, the data reveals a steady decline from the damp chill of winter through spring, followed by a gentle increase as autumn looms, showcasing Innsbruck's unique climatic rhythm that harmonizes the seasons.

September Average Humidity in Innsbruck

This chart illustrates the average monthly humidity levels in Innsbruck, with September's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how September's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec93%89%86%83%78%79%82%80%83%90%89%90%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Innsbruck

As September rolls in, Innsbruck, Austria, experiences a high UV Index of 7, making sun protection more important as the summer months begin to fade. After the peak very high readings of 9 and 10 in July and August, this slight decline still necessitates caution, as the burn time is notably shorter at just 25 minutes. Interestingly, the UV exposure pattern throughout the year reveals a clear trend: while winter months offer low UV levels with burn times extending to 45 minutes, the summer months require vigilance, with significant cuts in burn time to just 15 minutes. As the seasons transition, those enjoying the outdoors in September should remain aware of their sun exposure. For detailed information on the UV Index throughout the year, explore Innsbruck UV Index.

Maximum UV Index Levels in Innsbruck for September

The chart shows the monthly maximum UV Index (UVI) for Innsbruck in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec24779101097532
Data source: Innsbruck September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Innsbruck

As summer fades, September shines with an impressive 309 hours of sunshine in Innsbruck, Austria, marking a gentle transition from the peak warmth of July and August. The month offers a delightful respite, with daylight hours gradually declining but still providing ample opportunities to explore the breathtaking alpine landscape. With sunshine tapering from the 409 hours seen in July, September maintains a vibrant glow, bridging the gap to autumn while hinting at the coziness of the upcoming months. This balance of daylight not only enhances the beauty of Innsbruck’s stunning surroundings but also invites residents and visitors alike to savor the lingering warmth before the chill of October, which brings just 289 hours of sun.

Monthly Sunshine Duration in Innsbruck: September Highlighted

The September sunshine duration represents the total number of hours Innsbruck experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec188h249h314h348h361h387h409h371h309h289h232h213h
Data source: Innsbruck September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Innsbruck During September

Innsbruck enjoys a noticeable upswing in sunshine as September approaches, boasting a 42% chance of sunny days. This trend marks a significant improvement from the summer months, where sunshine dipped to the low 30s, especially in July and August. Compared to the earlier part of the year, September's likelihood of sun sits comfortably above the averages of both spring and summer, offering an enticing glimpse of autumn's golden hues. With temperatures still mild and the scenery breathtaking, September stands out as a delightful month for those seeking to bask in the beauty of the Tyrolean landscape.

Percentage of Sunny Days in September in Innsbruck

The chart illustrates the percentage of sunny days in Innsbruck throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Innsbruck experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec20%43%40%35%26%35%29%28%42%36%36%34%
Data source: Innsbruck September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Innsbruck in September

As summer wanes in Innsbruck, Austria, daylight begins its gradual retreat in September, offering approximately 12 hours of sunlight. This marks a notable decline from the summer peak of 15 hours experienced from May through August. The transition into autumn is characterized by a slowing pace, as daylight diminishes steadily towards the 10 hours typical of October. Interestingly, the trend reveals a clear seasonal rhythm: longer days in spring and summer give way to the diminishing light of autumn and winter. This ebb and flow not only shapes daily activities but also imbues the landscape with a changing ambience, inviting locals and visitors alike to savor the last golden rays of the year.

Average Daylight Hours in Innsbruck for September

The chart illustrates the variation in daylight duration in Innsbruck throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 57m10h 17m11h 56m13h 37m15h 5m15h 49m15h 26m14h 8m12h 30m10h 49m9h 19m8h 32m
Data source: Innsbruck daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Innsbruck

As summer transitions to autumn in Innsbruck, September brings a gentle breeze with an average wind speed of 1.2 m/s (3 mph), mirroring the softer gusts felt in August. This decrease signals a shift in the seasonal rhythm, where the briskness of spring and summer gives way to a more tranquil atmosphere. Notably, while September's winds are among the softest of the year, the months preceding it—particularly June and July—record slightly higher speeds, perhaps hinting at the lingering warmth of summer. As the days grow shorter, this subtle reduction in wind offers a calm invitation to enjoy the enchanting landscapes of Innsbruck as fall begins to unfold.

Average September Wind Speed in Innsbruck

The chart displays monthly wind speed patterns in Innsbruck, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec1.51.51.41.61.51.31.31.21.2 m/s1.51.31.5
Data source: Innsbruck September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Innsbruck Compares to Other Months

The weather in Innsbruck 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 Innsbruck and find detailed weather information for every month.

September and January in Innsbruck present a stark contrast in weather conditions. September typically enjoys milder temperatures, ranging from a chilly -7°C (20°F) at night to a comfortable 22°C (72°F) during the day, with an average of 9°C (49°F) and a humidity of 83%. However, it also experiences significant rainfall, with 164 mm (6.5 in) of precipitation over approximately 16 days.

Conversely, January is much colder, with temperatures plummeting to a minimum of -30°C (-22°F) and reaching a maximum of just 7°C (46°F). The average temperature sits around -6°C (22°F), accompanied by higher humidity levels at 93%. Although January sees less precipitation overall, totaling 103 mm (4.1 in), it occurs over fewer days—around 11. For a more detailed perspective on the weather during this time, visit Innsbruck weather in January.

September and February present starkly contrasting weather conditions. In September, temperatures range from a chilly -7°C (20°F) at night to a pleasant 22°C (72°F) during the day, with an average of 9°C (49°F). The month is relatively wet, recording 164 mm (6.5 in) of precipitation over 16 days, and maintains a humidity level of 83%. In contrast, February experiences much colder temperatures, with a minimum of -24°C (-11°F) and an average of -3°C (27°F), peaking at 10°C (49°F). This month is drier, with 82 mm (3.2 in) of precipitation spread over 13 days and slightly higher humidity at 89%. For more details, check out Innsbruck weather in February.

When comparing the weather in September and March, it's clear that March tends to be colder and has a deeper chill. In September, temperatures range from a minimum of -7°C (20°F) to an average of 9°C (49°F), peaking at a comfortable 22°C (72°F). The month sees considerable precipitation, with 164 mm (6.5 in) over 16 days, accompanied by a humidity level of 83%. In contrast, March features much colder temperatures, with a minimum of -24°C (-11°F) and an average of -1°C (31°F), reaching a maximum of only 14°C (58°F). Precipitation in March is lower at 104 mm (4.1 in), occurring over the same number of days, but with slightly higher humidity at 86%. For more details about March weather in Innsbruck, you can check Innsbruck weather in March.

September and April present contrasting weather patterns, reflecting the transition between seasons. In September, temperatures range from a minimum of -7°C (20°F) to a maximum of 22°C (72°F), with an average of 9°C (49°F). The month sees an average of 164 mm (6.5 in) of precipitation over 16 days, maintaining a consistent humidity level of 83%. In contrast, April experiences colder temperatures, with a minimum of -17°C (2°F) and an average of 3°C (38°F), peaking at 18°C (65°F). Although April has less rainfall at 94 mm (3.7 in) over 14 days, the humidity remains the same at 83%. For more specific insights into April weather, you can check Innsbruck weather in April.

When comparing the weather in September and May, we see notable differences despite both months experiencing chilly temperatures. September features a minimum temperature of -7°C (20°F) and an average of 9°C (49°F), with maximums reaching 22°C (72°F). It also tends to be wetter, with a total precipitation of 164 mm (6.5 in) spread over 16 days, leading to a higher humidity level of 83%. In contrast, May is slightly colder overall, with minimums dropping to -11°C (13°F) and an average of 7°C (45°F), peaking at 24°C (76°F). It receives more precipitation at 202 mm (8.0 in) over 24 days, though with somewhat lower humidity at 78%. For more details about May weather specifically, you can check out Innsbruck weather in May.

September and June showcase distinct differences in weather patterns. In June, temperatures range from a minimum of -2°C (28°F) to a maximum of 28°C (83°F), with an average of 12°C (54°F), while September experiences a broader temperature range from -7°C (20°F) to 22°C (72°F) and an average of 9°C (49°F). Both months see considerable precipitation, with June receiving 190 mm (7.5 in) over 20 days and September, 164 mm (6.5 in) over 16 days. Interestingly, while September has a slightly higher humidity level at 83%, June's humidity is also notable at 79%. For more detailed information on June's weather in Innsbruck, you can refer to Innsbruck weather in June.

In comparing the weather of September and July, September presents a cooler climate with average temperatures ranging from a minimum of -7°C (20°F) to a maximum of 22°C (72°F), while July enjoys warmer conditions, with temperatures varying from a minimum of 3°C (38°F) to a maximum of 29°C (84°F). During September, the humidity remains relatively high at 83%, closely resembling July's 82%, even though July experiences more precipitation at 205 mm (8.1 in) over 22 days compared to September's 164 mm (6.5 in) over 16 days. For more details on the July climate, you can check this link: Innsbruck weather in July.

September weather in Innsbruck is characterized by cooler temperatures compared to August, with minimums reaching -7°C (20°F) and an average of 9°C (49°F), while August enjoys milder conditions with a minimum of -1°C (31°F) and an average of 13°C (56°F). Additionally, September experiences higher precipitation levels, accumulating 164 mm (6.5 in) over 16 days, compared to August's 233 mm (9.2 in) over 22 days. While humidity remains relatively high in both months, September sees a slight increase to 83%, compared to August's 80%. For more detailed insights, visit Innsbruck weather in August.

September and October showcase a notable transition in weather patterns. September tends to be milder, with average temperatures reaching up to 9°C (49°F) and a maximum of 22°C (72°F), making it feel more pleasant overall. In contrast, October brings cooler temperatures, with averages dropping to 5°C (42°F) and a maximum of 18°C (65°F). While both months experience significant rainfall, October sees a decrease in precipitation days to 13, resulting in 134 mm (5.3 in) of rain compared to September's 164 mm (6.5 in) across 16 days. Furthermore, the humidity rises slightly in October to 90%, compared to September's 83%. For a detailed look at the weather during this month, check out Innsbruck weather in October.

September in Innsbruck experiences a milder climate with average temperatures around 9°C (49°F), while November ushers in colder conditions, with average temperatures dropping to 0°C (33°F). The maximum temperature in September reaches a pleasant 22°C (72°F), contrasting sharply with November’s upper limit of 14°C (58°F). While September sees higher precipitation levels of 164 mm (6.5 in) over 16 days, November has a reduced rainfall of 104 mm (4.1 in) over just 11 days. Additionally, humidity levels rise slightly in November to 89%, compared to 83% in September. For a deeper look at November weather specifics, visit Innsbruck weather in November.

September and December present stark contrasts in weather conditions. In September, the temperatures range from a chilly -7°C (20°F) at night to a pleasant 22°C (72°F) during the day, with an average of 9°C (49°F). This month sees a significant amount of rain, with 164 mm (6.5 in) of precipitation spread over 16 days, and humidity averaging around 83%.

In contrast, December experiences much colder temperatures, with lows plunging to -23°C (-10°F) and an average temperature of -5°C (24°F), peaking at just 8°C (46°F). Precipitation is slightly less, totaling 140 mm (5.5 in) over 17 days, but humidity is higher at 90%. For more detailed insights into December's climate, you can visit Innsbruck weather in December.

Compare Innsbruck's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Innsbruck

As September rolls into Innsbruck, the city experiences a charming transition from the warmth of summer to the crispness of autumn. With temperatures cooling and an average dipping to a refreshing level, this month showcases a delightful blend of sunny days and cooler nights, making it perfect for outdoor activities. However, visitors should prepare for a noticeable increase in rainfall, as precipitation becomes more frequent during this period. The relatively high humidity adds to the atmosphere, creating a cozy feel that envelops the breathtaking alpine landscape. For those looking to explore the unique offerings of Innsbruck during this season, the weather presents a beautiful backdrop that contrasts sharply with the warmer, drier conditions of the preceding months. For a more detailed outlook, check the comprehensive information on Innsbruck Climate.