September Weather in Bolzano, Italy

Last updated: March 24, 2025

In Bolzano, Italy, September ushers in a delightful transition from summer to autumn, characterized by an average temperature of 15°C (59°F) and maximum highs reaching 26°C (78°F). Visitors can expect a crisp atmosphere, with nighttime lows dipping to 0°C (32°F). While the month experiences 11 days of precipitation totaling 78 mm (3.1 in), the 83% humidity adds a refreshing element to the air. This blend of moderate warmth and occasional rain creates a picturesque setting for exploring the scenic beauty of the region, making September an enchanting time to visit Bolzano.

September Temperature in Bolzano

In September, Bolzano, Italy, begins to transition from the warmth of summer to the crispness of autumn. With nightly temperatures dipping to a cool 0°C (32°F), the days still embrace a pleasant warmth, averaging around 15°C (59°F), and peaking at a comfortable 26°C (78°F). This month is marked by a gradual decrease in temperatures, as it shifts from the summer highs experienced in July and August, where the max reached 32°C (89°F). The changing landscape, with hints of fall colors emerging, complements the decrease in heat, creating a delightful atmosphere for outdoor activities and exploration in this charming alpine town. As September unfolds, the balance of warmth and coolness invites visitors to relish the fading summer while preparing for the beauty of autumn.

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

The chart illustrates September temperature patterns in Bolzano, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec303641485564666659514133
Data source: Temperature data for Bolzano 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 Bolzano

In September, Bolzano experiences a moderate level of precipitation, receiving 78 mm (3.1 inches) of rain over 11 days. This marks a slight decrease from August's wetter conditions, which totalled 94 mm with the same number of rainy days, signaling a transition towards the drier autumn months. With September's rainfall largely consistent with summer patterns, it sets the stage for October, which typically witnesses a significant uptick in precipitation at 141 mm. As the season shifts, the gradual change in both rainfall amounts and days indicates a move towards the crisper and wetter conditions of fall, making September a bridge month between the warm summer and the chilly, wet autumn ahead.

September Precipitation Trends in Bolzano

The chart displays monthly precipitation patterns in Bolzano, 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.
JanFebMarAprMayJunJulAugSepOctNovDec50627210212471739478141143105
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Bolzano

In Bolzano, Italy, September marks a transitional period in humidity levels as the summer warmth begins to wane. With an average humidity of 83%, September offers a slight increase from August's 80%, reflecting the shift towards the wetter autumn months. This trend continues into autumn, with humidity gradually rising as the year progresses, peaking at 93% in January and 90% in both October and December. Comparatively, the overall pattern reveals a gradual decrease in humidity during the spring and early summer months, from January's high of 93% down to a low of 78% in May, before starting to climb again as the seasons change. This rhythmic fluctuation showcases Bolzano's unique climate, where the interplay of seasons affects humidity in a predictable yet captivating manner.

September Average Humidity in Bolzano

This chart illustrates the average monthly humidity levels in Bolzano, 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 Bolzano

In September, Bolzano, Italy, experiences a high UV Index of 7, indicating a shift from the intense summer sun. With a burn time of 25 minutes, it's essential to practice sun safety if you're planning to enjoy outdoor activities. This marks a gradual decrease from the peak months of June and July, where UV levels soared to 10, creating a very high exposure category with only 15 minutes of safety. As summer transitions to autumn, September maintains a strong UV presence, slightly tapering from the previous months while encouraging outdoor enthusiasts to stay aware. For more details and a comprehensive overview, visit the Bolzano UV Index.

Maximum UV Index Levels in Bolzano for September

The chart shows the monthly maximum UV Index (UVI) for Bolzano 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.
JanFebMarAprMayJunJulAugSepOctNovDec23679101097532
Data source: Bolzano 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 Bolzano

September in Bolzano, Italy, offers a delightful blend of warmth and sunlight, with 319 hours of sunshine that reflect the lingering summer vibes. As summer transitions into autumn, the sun-soaked days begin to wane from July's peak of 417 hours. This gradual decline, symptomatic of the changing seasons, showcases a vibrant tapestry of late bloomers as nature readies itself for the cooler months ahead. While sunlight hours decrease compared to the bustling summer, September still boasts more sunshine than the approaching months, creating the perfect backdrop for outdoor exploration and enjoying the stunning alpine scenery. Embrace the golden hues of September while they last, as Bolzano transitions gracefully into the heart of autumn.

Monthly Sunshine Duration in Bolzano: September Highlighted

The September sunshine duration represents the total number of hours Bolzano 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.
JanFebMarAprMayJunJulAugSepOctNovDec190h251h320h343h358h398h417h379h319h289h221h211h
Data source: Bolzano September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Bolzano During September

September in Bolzano, Italy, showcases a noteworthy chance of sunny weather, with a 47% likelihood of clear skies. This marks an increase compared to the cooler months of July and August, where the chances hovered around 39% to 44%. Following the vibrant warmth of summer, September presents a transitional phase where the weather remains relatively favorable, rivaling the sunniest days seen earlier in the year, like March, which boasts a 59% chance of sunshine. As the month progresses, the likelihood aligns closely with October's 49%, hinting at a comforting balance between summer's lingering warmth and the approaching autumn chill. Thus, for those hoping to bask in the sun during their September visit, Bolzano proves to be a promising destination.

Percentage of Sunny Days in September in Bolzano

The chart illustrates the percentage of sunny days in Bolzano 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 Bolzano experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec34%49%59%48%35%44%39%44%47%49%41%48%
Data source: Bolzano September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Bolzano in September

As summer gives way to autumn, September in Bolzano, Italy, witnesses a gentle decline in daylight, offering around 12 hours of sunlight each day. This marks a noticeable dip from the peak of 15 hours experienced in the height of summer months like June and July. However, September still retains a precious balance, allowing residents to enjoy the stunning landscapes bathed in a warm, golden glow. The gradual shortening of days this month foreshadows the cozy atmosphere of fall, setting the stage for the enchanting colors of October and the crispness of winter ahead. Overall, September is a transitional phase, bridging the vibrant energy of summer with the introspective beauty of the coming seasons.

Average Daylight Hours in Bolzano for September

The chart illustrates the variation in daylight duration in Bolzano throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 2m10h 19m11h 56m13h 35m15h 1m15h 44m15h 21m14h 5m12h 30m10h 51m9h 23m8h 38m
Data source: Bolzano daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Bolzano

As September arrives in Bolzano, Italy, the gentle caress of the wind continues its tranquil rhythm, with an average speed of just 0.9 m/s (2 mph). This subtle breeze marks a slight decline from the more lively winds of the summer months, reflecting a transitional period as the town prepares for the changing seasons. Throughout the year, wind speeds are relatively consistent, hovering primarily around 1.0 to 1.2 m/s, with only minor fluctuations. The autumnal months see a gradual return to these softer winds, suggesting a cozy atmosphere as nature begins to shift. This calming, almost whispering breeze of September invites residents and visitors alike to embrace the serene beauty of Bolzano's landscape as it prepares for the more brisk days ahead.

Average September Wind Speed in Bolzano

The chart displays monthly wind speed patterns in Bolzano, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.00.91.01.21.21.11.21.00.9 m/s1.11.01.1
Data source: Bolzano September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Bolzano Compares to Other Months

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

In September, the weather experiences a comfortable transition from summer to autumn, with average temperatures ranging from a cool 15°C (59°F) to a warm 26°C (78°F) and relatively high humidity at 83%. This month is marked by moderate precipitation totaling 78 mm (3.1 in) over about 11 days, making it a lush time of year. In contrast, January is characterized by a much colder climate, with temperatures dipping as low as -23°C (-10°F) and averaging around -1°C (30°F). The precipitation decreases to 50 mm (2.0 in) across just 7 days, while humidity levels rise slightly to 93%. For more details about the January climate, you can check Bolzano weather in January.

In September, the weather tends to be much warmer and more temperate, with average temperatures hovering around 15°C (59°F) and highs reaching up to 26°C (78°F). The month sees approximately 78 mm (3.1 in) of precipitation over about 11 days but maintains a relatively lower humidity of 83%. In stark contrast, February experiences colder conditions, as reflected by its average temperature of only 2°C (36°F), with minimums plunging to -17°C (1°F) and highs around 17°C (63°F). While February has less precipitation at 62 mm (2.4 in) across 9 days, the humidity rises to 89%, creating a chillier and more damp atmosphere. For more detailed insights, you can check Bolzano weather in February.

When comparing the weather in September and March, notable differences emerge. September typically enjoys a milder climate, with average temperatures around 15°C (59°F) and highs reaching up to 26°C (78°F), accompanied by relatively high humidity at 83%. In contrast, March is significantly cooler, with average temperatures plummeting to around 5°C (41°F) and lows dropping as low as -15°C (5°F). While precipitation levels are somewhat similar, with September receiving about 78 mm (3.1 in) over 11 days and March slightly less at 72 mm (2.8 in) over 10 days, March tends to feel much colder and has a humidity level of 86%. For a more detailed look at March weather, you can check Bolzano weather in March.

When comparing the weather in September and April, significant differences arise in temperature and precipitation. September tends to be warmer, with average temperatures ranging from a minimum of 0°C (32°F) to a maximum of 26°C (78°F), while April's temperatures are cooler, averaging between -4°C (25°F) and 23°C (74°F). Additionally, April experiences slightly more precipitation, at 102 mm (4.0 in) over 13 days compared to September's 78 mm (3.1 in) over 11 days. Despite the variations in temperature and rainfall, both months maintain a comparable humidity level of 83%. For a detailed look at April weather in Bolzano, you can visit Bolzano weather in April.

When comparing the weather in September and May, we see distinct differences despite some similarities. September tends to be slightly warmer, with average temperatures around 15°C (59°F) and a maximum reaching 26°C (78°F), while May has a lower average of 13°C (55°F), although both months share the same maximum temperature. However, May experiences more precipitation, totaling 124 mm (4.9 in) over 16 days compared to September's 78 mm (3.1 in) over 11 days. Additionally, September has higher humidity at 83%, while May sits at a comfortable 78%. For a more detailed look at the weather specifics in May, you can refer to Bolzano weather in May.

The weather in September presents a cooler climate compared to June, with temperatures ranging from a minimum of 0°C (32°F) to a maximum of 26°C (78°F) and an average of 15°C (59°F). This month also experiences higher humidity at 83% and a total of 78 mm (3.1 in) of precipitation over 11 days. In contrast, June boasts a warmer range, with temperatures ranging from a minimum of 7°C (44°F) to a maximum of 34°C (93°F) and an average of 18°C (64°F). June has slightly lower precipitation at 71 mm (2.8 in) over 10 days and a humidity level of 79%. For more detailed insights, you can explore Bolzano weather in June.

In comparing the weather of September and July, it is evident that July generally offers warmer temperatures, with average highs reaching up to 32°C (89°F) compared to September's maximum of 26°C (78°F). The minimum temperatures also reflect this trend, with July starting at 8°C (46°F) versus September's brisk 0°C (32°F). Precipitation levels are similar, with July experiencing 73 mm (2.9 in) over 12 days and September slightly higher at 78 mm (3.1 in) over 11 days. Interestingly, while both months have comparable humidity levels, September is marginally more humid at 83% compared to July’s 82%. For more detailed information, you can check Bolzano weather in July.

In comparing the weather of September and August, September presents a notable shift towards cooler temperatures with a minimum of 0°C (32°F) and an average of 15°C (59°F), in stark contrast to August's minimum of 7°C (45°F) and an average of 19°C (66°F). While September sees a maximum temperature of 26°C (78°F), August reaches higher peaks of 32°C (91°F). Precipitation in September is slightly lower at 78 mm (3.1 in) over 11 days, compared to August's 94 mm (3.7 in) over 10 days. Humidity remains high in both months, with September at 83% and August at 80%. For more detailed information on August's climate, you can visit Bolzano weather in August.

September and October present distinct shifts in weather patterns. In September, temperatures range from a minimum of 0°C (32°F) to a maximum of 26°C (78°F), with an average of 15°C (59°F), providing relatively mild conditions. However, this month experiences moderate rainfall, totaling 78 mm (3.1 in) over 11 days, coupled with a humidity level of 83%.

In contrast, October brings cooler temperatures, with a minimum of -2°C (29°F) and a maximum of 22°C (73°F), and an average of 11°C (51°F). This month sees a significant increase in precipitation, reaching 141 mm (5.6 in) over the same 11 days, and humidity rises to 90%. Overall, October is marked by cooler weather and more frequent rain compared to September. For more details, check out Bolzano weather in October.

September and November present contrasting weather patterns, with September featuring milder temperatures ranging from a minimum of 0°C (32°F) to a maximum of 26°C (78°F) and an average of 15°C (59°F). It experiences 78 mm (3.1 in) of precipitation over 11 days, coupled with a humidity of 83%. In contrast, November sees a significant drop in temperature, with a minimum of -11°C (13°F) and an average of 5°C (41°F), peaking at 18°C (64°F). The month is wetter, accumulating 143 mm (5.6 in) of precipitation across 13 days, and the humidity rises to 89%. For more insights into November weather, you can check Bolzano weather in November.

In September, the weather in Bolzano is relatively mild, featuring temperatures that range from a minimum of 0°C (32°F) to a maximum of 26°C (78°F), with an average temperature of 15°C (59°F). The month experiences about 78 mm (3.1 in) of precipitation over 11 days, along with a humidity level of 83%. In contrast, December brings much colder weather, where temperatures drop significantly, with a minimum of -16°C (3°F) and a maximum of only 12°C (54°F), averaging around 0°C (33°F). This month also sees an increase in precipitation to 105 mm (4.1 in) across 10 days and higher humidity at 90%. For more details about the December weather in Bolzano, visit Bolzano weather in December.

Compare Bolzano's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Bolzano

As summer yields to autumn, September in Bolzano offers a delightful transition with moderate temperatures that provide a refreshing escape from the heat of the previous months. While the average temperature hovers around a comfortable 15°C (59°F), the landscape is adorned with the last blooms of summer amidst increasing humidity levels at 83%. This month experiences more frequent rains than its drier counterparts, with precipitation occurring across about 11 days, making it the wettest month in the late summer season. The charming atmosphere, punctuated by cooler nights that can plunge to 0°C (32°F), sets September apart, inviting visitors to explore the enchanting beauty of Bolzano. For more insights on the yearly climate patterns in this picturesque region, check out Bolzano Climate.