September Weather in Altmuenster, Austria

Last updated: February 26, 2025

Experience the captivating weather of Altmünster, Austria, in September, where temperatures can soar up to a stunning 30°C (86°F), while averaging a pleasant 15°C (59°F). As autumn begins to whisper in, the mercury dips to a cool 2°C (35°F) during the night. Expect 108 mm (4.3 inches) of rain spread over about 11 days, creating a refreshing ambiance amid the lush landscapes. With an average humidity of 74%, this month offers a unique blend of warm days and crisp evenings, perfect for exploring the scenic beauty of this charming region.

September Temperature in Altmuenster

In September, Altmünster experiences a delightful transition as summer gives way to autumn. With temperatures ranging from a mild 2°C (35°F) to a pleasant maximum of 30°C (86°F), the month strikes a lovely balance between warmth and coolness. The average temperature settles around 15°C (59°F), inviting outdoor activities and scenic strolls as the foliage begins to change. This month marks a noticeable cool-down compared to the sweltering heights of August, yet still retains enough warmth for late-season adventures. It's a perfect time to appreciate the beautiful landscapes as they transition into their autumn glory.

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

The chart illustrates September temperature patterns in Altmuenster, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec323641495666666758504135
Data source: Temperature data for Altmuenster generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Altmuenster

In September, Altmuenster experiences a noticeable shift in precipitation, receiving 108 mm (4.3 in) over 11 days, marking a transition from the wetter summer months to the drier autumn season. While this amount is significant, it is slightly less than the preceding months of August and July, which recorded 134 mm and 128 mm, respectively. This reduction in rainfall, paired with fewer precipitation days, suggests that the region is beginning to prepare for the crispness of fall. Interestingly, September's precipitation levels closely resemble January's, hinting at a seasonal cycle where both months share a similar moisture profile. As the year progresses, the balance of precipitation continues to fluctuate, with October expected to bring 100 mm (3.9 in) over 13 days, indicating that while September sets the stage for autumn, the weather remains dynamic as Altmuenster transitions into the latter part of the year.

September Precipitation Trends in Altmuenster

The chart displays monthly precipitation patterns in Altmuenster, 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.
JanFebMarAprMayJunJulAugSepOctNovDec10083875913812412813410910068122
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Altmuenster

In September, Altmünster experiences a relative humidity of 74%, which reflects a slight increase from the summer months. As the year transitions from the warmer, drier air of August (68%), the air in September begins to moisten, foreshadowing the wetter months ahead. This upward trend is evident as humidity levels gradually rise, culminating in the much higher figures of October (88%) and beyond. The shift in humidity after the summer not only signals a change in weather patterns but also adds a refreshing crispness to the air, preparing the region for autumn's embrace.

September Average Humidity in Altmuenster

This chart illustrates the average monthly humidity levels in Altmuenster, 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.
JanFebMarAprMayJunJulAugSepOctNovDec91%87%82%79%74%75%74%69%74%88%90%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Altmuenster

As summer fades into autumn in Altmuenster, Austria, the UV Index takes a noticeable dip in September, dropping to 6, which falls under the high exposure category. This reduction from the very high levels experienced during the peak summer months serves as a reminder to stay vigilant about sun protection. With a burn time of 25 minutes, it’s essential to take precautions even as the days begin to shorten. This trend of gradually decreasing UV intensity continues into autumn, with October seeing an index of 4. For those enjoying the early fall sunshine, understanding these shifts is crucial to ensure safety while basking in the beautiful landscapes of Altmuenster. For more detailed information, visit Altmuenster UV Index.

Maximum UV Index Levels in Altmuenster for September

The chart shows the monthly maximum UV Index (UVI) for Altmuenster 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.
JanFebMarAprMayJunJulAugSepOctNovDec235689986421
Data source: Altmuenster 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 Altmuenster

As September rolls into Altmuenster, the sun illuminates the early signs of autumn, offering a pleasant 294 hours of sunshine. This month strikes a harmonious balance between the vibrant summer days of July and August, which boast the highest sunshine totals at 411 and 366 hours, respectively. Although September marks a decline from the summer peak, it still showcases a significant amount of sun before the cooler months take hold. Comparatively, the month holds more sunshine than the brisk October, with just 268 hours. As nature transitions, September's golden rays provide the perfect backdrop for outdoor adventures, making it an ideal time to embrace the beauty of Altmuenster before the landscape shifts to winter's embrace.

Monthly Sunshine Duration in Altmuenster: September Highlighted

The September sunshine duration represents the total number of hours Altmuenster 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.
JanFebMarAprMayJunJulAugSepOctNovDec146h228h281h339h349h386h411h366h294h268h221h168h
Data source: Altmuenster September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Altmuenster During September

In Altmünster, Austria, September stands out as a promising month for sunshine, boasting a 53% chance of clear skies. This substantial increase in sunny days is noteworthy when compared to the earlier summer months, where the chances hovered around the 34% to 42% range. As the season transitions from summer to autumn, September offers a delightful opportunity to enjoy outdoor activities under the sun, making it one of the brighter months of the year. Following September, the likelihood of sunny days decreases again, dropping to 39% in October, hinting at the gradual onset of the cloudier autumn weather. Thus, if you're planning a visit, September could be your best bet for enjoying radiant days in this picturesque region.

Percentage of Sunny Days in September in Altmuenster

The chart illustrates the percentage of sunny days in Altmuenster 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 Altmuenster experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec16%42%43%41%28%42%39%34%53%39%28%21%
Data source: Altmuenster September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Altmuenster in September

As summer gives way to autumn in Altmuenster, September brings about a gradual shift in daylight hours, with the sun gracing the skies for an average of 12 hours. This decline is part of a larger trend that begins in the peak of summer, where the region enjoys up to 15 hours of daylight in June and July. Post-September, daylight continues to wane, dipping to 10 hours in October and further to 9 hours by November. This steady cycle reflects the natural rhythm of the seasons, highlighting the transition from the vibrant, long days of summer to the shorter, cozy days of fall. As the days noticeably shorten, this signals a time for reflection and preparation for the colder months ahead.

Average Daylight Hours in Altmuenster for September

The chart illustrates the variation in daylight duration in Altmuenster throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 50m10h 13m11h 55m13h 41m15h 11m15h 58m15h 33m14h 12m12h 31m10h 46m9h 13m8h 24m
Data source: Altmuenster daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Altmuenster

As September arrives in Altmünster, Austria, the gentle whispers of the wind begin to wane, with an average speed of only 1.9 m/s (4 mph), marking the annual low. This decline in wind intensity contrasts sharply with the early summer months, which typically boast slightly stronger breezes, peaking at 2.6 m/s (6 mph) in May. Following the energetic spring, the summer months exhibit a gentle lull, and September continues this trend, ushering in a calm that perfectly complements the serene landscapes of autumn. As the seasonal shift progresses, one can expect the winds to pick up slightly in October, reaffirming their cyclical nature in this picturesque region.

Average September Wind Speed in Altmuenster

The chart displays monthly wind speed patterns in Altmuenster, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.52.12.32.42.62.12.02.11.9 m/s2.02.02.3
Data source: Altmuenster September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Altmuenster Compares to Other Months

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

In comparing the weather of September and January, there's a stark contrast both in temperature and humidity. September boasts warmer temperatures, with lows around 2°C (35°F) and highs reaching up to 30°C (86°F), while January experiences much colder conditions with minimum temperatures plummeting to -14°C (8°F) and averages hovering around freezing at 0°C (32°F). Additionally, September has a relatively moderate humidity of 74%, compared to January's high humidity level of 91%, which can make the cold feel even more biting. Precipitation in September totals 108 mm over 11 days, slightly higher than January's 100 mm over 13 days, indicating a similarly wet climate but with different temperature dynamics. For more detailed insights into January weather, check out Altmuenster weather in January.

September and February present contrasting weather patterns. In September, temperatures range from a minimum of 2°C (35°F) to a maximum of 30°C (86°F), with an average of 15°C (59°F). This month typically sees about 108 mm (4.3 in) of precipitation over 11 days, accompanied by a humidity level of 74%. In stark contrast, February experiences much cooler temperatures, with a minimum of -12°C (11°F) and a maximum of 19°C (66°F), averaging around 2°C (36°F). Precipitation in February is slightly lower at 83 mm (3.3 in) over 14 days, along with a higher humidity level of 87%. For more detailed information, you can check Altmuenster weather in February.

When comparing the weather in September and March, significant differences can be observed. September typically enjoys milder temperatures, with a minimum of 2°C (35°F), an average of 15°C (59°F), and a maximum of 30°C (86°F). In contrast, March experiences much cooler conditions, starting with a minimum of -12°C (10°F) and peaking at 20°C (69°F) on warmer days, with an average of 5°C (41°F). Additionally, September sees more precipitation with 108 mm (4.3 in) over 11 days, while March has slightly less, at 87 mm (3.4 in) over 16 days. Humidity levels are also higher in March at 82%, compared to 74% in September. For a more detailed look at the weather patterns, you can visit Altmuenster weather in March.

September and April present distinct weather patterns, each with its own characteristics. In September, temperatures range from a minimum of 2°C (35°F) to a maximum of 30°C (86°F), with an average of 15°C (59°F), while April experiences a cooler spectrum, with temperatures dipping to -6°C (22°F) and peaking at 27°C (80°F), averaging 9°C (49°F). Despite September having warmer averages, it also sees more precipitation, totaling 108 mm (4.3 in) over 11 days, compared to April's 59 mm (2.3 in) over 10 days. Additionally, humidity levels are slightly higher in April at 79%, compared to September's 74%. For more detailed information about weather in April, you can refer to Altmuenster weather in April.

September and May exhibit distinct weather patterns despite sharing a similar maximum temperature of 30°C (86°F). In September, temperatures range from a minimum of 2°C (35°F) to an average of 15°C (59°F), while in May, the minimum temperature is slightly lower at 0°C (33°F) with an average of 13°C (56°F). Additionally, September experiences less precipitation with 108 mm (4.3 in) over 11 days, compared to May's higher rainfall of 138 mm (5.4 in) spread across 18 days. Both months share the same humidity level of 74%, contributing to their overall climate character. For more specific insights, you can refer to the detailed overview at Altmuenster weather in May.

When comparing the weather in September and June, notable differences in temperature and precipitation emerge. In September, temperatures range from a minimum of 2°C (35°F) to a maximum of 30°C (86°F), with an average of 15°C (59°F), while June sees slightly warmer conditions with a minimum of 4°C (40°F) and a maximum of 33°C (92°F), averaging at 19°C (66°F). Precipitation levels are similar in both months, with September receiving 108 mm (4.3 in) over 11 days, compared to June's 124 mm (4.9 in) over 14 days. Humidity remains relatively consistent, with September at 74% and June at 75%. For more detailed weather insights in June, you can check Altmuenster weather in June.

In comparing the weather of September and July, we see notable differences in temperature and precipitation patterns. September typically has cooler temperatures, with a minimum of 2°C (35°F) and a maximum of 30°C (86°F), averaging around 15°C (59°F). In contrast, July is warmer, featuring a minimum of 9°C (48°F) and a maximum of 34°C (94°F), with an average temperature of 19°C (67°F). While both months experience high humidity levels of 74%, September tends to be slightly drier, with 108 mm (4.3 in) of precipitation over 11 days, compared to July's 128 mm (5.0 in) over 16 days. For more detailed information, you can check the Altmuenster weather in July.

In comparing the weather of September to August, September generally experiences cooler temperatures, with a minimum of 2°C (35°F) and an average of 15°C (59°F), compared to August's milder minimum of 7°C (45°F) and average of 19°C (67°F). The maximum temperature in September reaches 30°C (86°F), which is lower than August's peak of 35°C (95°F). Precipitation is also less frequent in September, with 108 mm (4.3 in) over 11 days, whereas August sees higher precipitation at 134 mm (5.3 in) across 14 days. Additionally, September has a higher humidity level at 74%, compared to August's 68%. To explore more about August weather, visit Altmuenster weather in August.

In September, temperatures ranged from a chilly 2°C (35°F) at night to a warm maximum of 30°C (86°F) during the day, with an average of 15°C (59°F). The month saw significant rainfall, totaling 108 mm (4.3 in) over 11 days, and humidity levels averaged 74%. In contrast, October brings cooler temperatures, with minimums dipping to -1°C (31°F) and an average of 10°C (51°F), peaking at 23°C (74°F). The month also experiences frequent rainfall, accumulating 100 mm (3.9 in) across 13 days, and higher humidity levels reaching 88%. For more detailed information about the weather in Altmuenster during October, you can visit Altmuenster weather in October.

In September, temperatures range from a chilly 2°C (35°F) at night to a warm 30°C (86°F) during the day, with an average of 15°C (59°F). The month experiences moderate rainfall, with a total of 108 mm (4.3 in) spread over 11 days and humidity levels around 74%. In contrast, November brings cooler temperatures, dipping to a minimum of -6°C (22°F) and peaking at 20°C (68°F), with an average temperature of 5°C (41°F). Precipitation decreases to 68 mm (2.7 in) over 10 days, but humidity rises to a higher 90%. For more detailed insights into November weather, you can visit Altmuenster weather in November.

In September, the weather is characterized by milder temperatures, with averages around 15°C (59°F) and highs reaching up to 30°C (86°F). This month typically experiences 108 mm (4.3 in) of precipitation over 11 days, coupled with a humidity level of 74%. Conversely, December brings much colder conditions, with temperatures dropping to an average of 2°C (35°F) and nighttime lows plummeting to -10°C (15°F). Precipitation slightly increases to 122 mm (4.8 in) over 17 days, and humidity rises to 89%, creating a notably damp and chilly atmosphere. For more details on December weather, visit Altmuenster weather in December.

Compare Altmuenster's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Altmuenster

As September unfolds in Altmünster, the weather offers a delightful blend of summer warmth and the approaching chill of autumn. With temperatures reaching a balmy 30°C, this month can still feel quite summery, yet it also sees cooler averages and brisk nighttime dips. Compared to other months, September experiences significant rainfall, with 11 days of precipitation contributing to a lush landscape. The elevated humidity levels add a muggy feel early in the month, a stark contrast to the drier summer days. This transitional period not only showcases the beauty of nature as it begins to shift towards autumn but also invites visitors to enjoy the serene atmosphere. For a deeper understanding of the varied weather patterns throughout the year, visit Altmuenster Climate.