September Weather in Sirmione, Italy

Last updated: March 24, 2025

September in Sirmione, Italy offers a delightful blend of warm days and cooler evenings, with maximum temperatures reaching an inviting 30°C (86°F) and an average temperature of 20°C (68°F). Visitors can expect the evenings to cool down to a minimum of 10°C (50°F), making it ideal for outdoor activities. Although the month brings an average precipitation of 119 mm (4.7 in) over approximately 11 days, the humidity remains comfortable at 66%, allowing for pleasant explorations of this scenic lakeside town. Enjoy the balance of sunshine and occasional rain as you soak in the beauty of Sirmione’s landscapes and historic charm.

September Temperature in Sirmione

In Sirmione, Italy, September marks a delightful transition from the summer heat to cooler autumn days. With temperatures ranging from a comfortable 10°C (50°F) at night to a pleasant 30°C (86°F) during the day, this month offers an ideal climate for exploring the town's stunning lakeside and historic sites. The average temperature settles at a mild 20°C (68°F), striking a perfect balance for outdoor activities. As the warmth of August gradually wanes, September invites visitors to enjoy the lingering sunshine while also embracing the refreshing crispness in the evening air. This month truly embodies a harmonious blend of summer's charm and the approaching autumnal serenity.

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

The chart illustrates September temperature patterns in Sirmione, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec404348556372757668595042
Data source: Temperature data for Sirmione 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 Sirmione

September in Sirmione, Italy, sees a notable increase in precipitation, with 119 mm (4.7 in) of rain falling over 11 days. This marks a slight rise compared to the previous month, reflecting the transition to autumn as summer’s warmth gives way to cooler, wetter weather. The rainfall not only enriches the lush landscapes surrounding Lake Garda but also prepares the region for the upcoming months, where precipitation peaks further in November. As the days grow shorter, the steady rainfall in September contributes to Sirmione's vibrant fall scene, making it an enchanting time to experience the city’s picturesque charm amidst the changing seasons.

September Precipitation Trends in Sirmione

The chart displays monthly precipitation patterns in Sirmione, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2653609612110110110411910213587
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sirmione

As summer transitions into autumn, September in Sirmione, Italy experiences a noticeable shift in humidity levels, registering at 66%. This marks a slight increase compared to the drier months of July and August, where humidity dipped to 61% and 54%, respectively. While September's humidity is higher than those summer lows, it remains considerably lower than the winter months, which see levels soaring back up to 83% in October and 87% in January. This gentle rise hints at the approaching chill of fall while allowing for a pleasant balance of warmth and moisture, making September an inviting time for visitors to explore the stunning landscapes and historic sites of this charming lakeside town.

September Average Humidity in Sirmione

This chart illustrates the average monthly humidity levels in Sirmione, 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.
JanFebMarAprMayJunJulAugSepOctNovDec87%79%69%71%70%65%61%54%66%83%88%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sirmione

As summer winds down, September in Sirmione, Italy offers a UV Index of 7, categorized as high, with a burn time of 25 minutes. This marks a slight decrease from the peak UV Index of 9 in July and June, yet still emphasizes the need for sun protection during outdoor activities. The month transitions from the intense summer sun, making it essential to remain vigilant against UV exposure. While the index begins to dip, careful planning for sun safety is still crucial as the days remain warm and inviting. For more detailed information on how to navigate UV levels, visit Sirmione UV Index.

Maximum UV Index Levels in Sirmione for September

The chart shows the monthly maximum UV Index (UVI) for Sirmione 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.
JanFebMarAprMayJunJulAugSepOctNovDec235789987532
Data source: Sirmione 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 Sirmione

As summer wanes, September in Sirmione, Italy, wraps up the warm season with a delightful 336 hours of sunshine, providing a perfect backdrop for leisurely strolls along the stunning lakeside. This month showcases a gentle decline from the sun-drenched July, which boasts the year's peak at 428 hours, yet still delivers ample bright days for visitors to enjoy. Following a sultry August with 394 hours of sunshine, September strikes an ideal balance, maintaining a generous supply of warmth while hinting at the cooler days ahead. This transition not only enhances the charm of the historic town but also invites travelers to savor the beautiful autumn scenery before the October sun dips to 297 hours.

Monthly Sunshine Duration in Sirmione: September Highlighted

The September sunshine duration represents the total number of hours Sirmione 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.
JanFebMarAprMayJunJulAugSepOctNovDec191h235h312h348h386h411h428h394h336h297h225h208h
Data source: Sirmione September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Sirmione During September

In Sirmione, Italy, the likelihood of sunny weather in September offers a tempting glimpse of late summer charm, with a 49% chance of sunshine. This marks a notable dip compared to the sun-soaked days of August, which boasts a 59% probability of clear skies. While September's warmth is still palpable, the lingering summer light begins to soften as autumn approaches, reflected in the fluctuating percentages throughout the year. Typically, the transition from summer to early fall in Sirmione maintains a healthy share of sunny days, especially compared to the cloudier months of late fall and winter. As the sun starts to make its gradual exit, September invites visitors to enjoy a blend of warm days and cooler evenings, perfect for savoring the idyllic scenery of Lake Garda.

Percentage of Sunny Days in September in Sirmione

The chart illustrates the percentage of sunny days in Sirmione 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 Sirmione experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec31%45%63%42%44%53%49%59%50%46%35%47%
Data source: Sirmione September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Sirmione in September

As summer gracefully gives way to autumn, September in Sirmione, Italy, offers a pleasant transition marked by approximately 12 hours of daylight. This decline from the sun-drenched 15 hours in July and August signals the end of the warmest months, inviting a cozy ambiance to the charming lakeside town. While the days grow shorter, they still provide ample time for exploration and enjoyment of Sirmione's stunning landscapes and historic sites, bridging the vibrant energy of summer with the serene beauty of fall. As daylight dwindles further into autumn, visitors can still relish in the lingering warmth and captivating sunsets that September brings.

Average Daylight Hours in Sirmione for September

The chart illustrates the variation in daylight duration in Sirmione throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 8m10h 22m11h 56m13h 32m14h 54m15h 36m15h 14m14h 1m12h 29m10h 53m9h 29m8h 45m
Data source: Sirmione daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Sirmione

As September arrives in Sirmione, Italy, the gentle caress of the wind becomes a defining characteristic of the landscape. With an average wind speed of 1.4 m/s (3 mph), the atmosphere is slightly calmer than the summer months, where breezes danced at around 1.6 to 1.8 m/s. This transition marks a subtle shift, welcoming the mellow warmth of early autumn while maintaining the tranquility that has become synonymous with the lake's stunning backdrop. As the cooling breeze envelopes the historic town, visitors can relish serene strolls along the lakeside, enveloped in an ambiance that invites relaxation and reflection. The steady rhythmic breath of September's winds hints at the seasons ahead, offering a perfect blend of warmth and ease, ideal for capturing the enchanting beauty of Sirmione.

Average September Wind Speed in Sirmione

The chart displays monthly wind speed patterns in Sirmione, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.71.51.51.71.81.71.71.61.4 m/s1.41.51.4
Data source: Sirmione September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Sirmione Compares to Other Months

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

September and January present striking contrasts in weather conditions. In September, temperatures range from a cool 10°C (50°F) at night to a warm 30°C (86°F) during the day, with an average of 20°C (68°F). This month also sees a fair amount of rainfall, totaling 119 mm (4.7 in) over 11 days, while humidity levels sit at a moderate 66%. In contrast, January offers much colder temperatures, with a minimum of -5°C (23°F) and a maximum of 14°C (58°F), leading to an average of just 4°C (40°F). Precipitation is significantly lower in January, with only 26 mm (1.0 in) expected over 4 days, but humidity is higher at 87%. For a detailed look at January weather, you can refer to Sirmione weather in January.

September and February weather present a stark contrast in temperature and conditions. In September, temperatures range from a mild 10°C (50°F) to a maximum of 30°C (86°F), with an average of 20°C (68°F), making it a generally warm month. The precipitation is higher at 119 mm (4.7 in) over 11 days, and humidity sits at 66%. In contrast, February is chillier, with temperatures dipping from a minimum of -6°C (22°F) to a maximum of 19°C (66°F) and an average of just 6°C (43°F). While it experiences lower precipitation at 52 mm (2.1 in) over 8 days, the humidity is noticeably higher at 79%. For more details on February's weather, visit Sirmione weather in February.

In September, temperatures are generally mild, ranging from a minimum of 10°C (50°F) to a maximum of 30°C (86°F), with an average of 20°C (68°F). This month experiences about 119 mm (4.7 in) of precipitation over 11 days, contributing to a humidity level of 66%. In contrast, March is much cooler, with temperatures dipping to a minimum of -5°C (23°F) and peaking at 22°C (72°F), averaging around 9°C (48°F). Precipitation is less frequent in March, totaling 60 mm (2.3 in) over 8 days, accompanied by a slightly higher humidity of 69%. For more detailed insights, you can check Sirmione weather in March.

When comparing the weather in September and April, notable differences emerge. September boasts warmer temperatures with an average of 20°C (68°F), peaking at a comfortable 30°C (86°F), while April sees much cooler conditions, averaging only 13°C (55°F) and maxing out at 25°C (78°F). Precipitation levels are relatively close, with September receiving 119 mm (4.7 in) over 11 days, compared to April's 96 mm (3.8 in) across the same number of days. Humidity is slightly higher in April at 71%, versus September’s 66%. For more details on April weather in Sirmione, you can visit Sirmione weather in April.

September and May offer distinct weather experiences, both marked by similar maximum temperatures of 30°C (86°F). However, September generally enjoys warmer average temperatures, reaching 20°C (68°F), compared to May's cooler average of 17°C (63°F). Precipitation is slightly higher in May, with 121 mm (4.8 in) spread over 17 days, compared to September's 119 mm (4.7 in) over 11 days. Additionally, humidity levels are slightly elevated in May at 70%, while September has a humidity of 66%. For those interested in exploring the weather specifics for May, you can check Sirmione weather in May.

September and June offer distinct weather experiences, with September marking the transition from summer to autumn. In September, temperatures range from a minimum of 10°C (50°F) to a maximum of 30°C (86°F), averaging around 20°C (68°F). The month sees about 119 mm (4.7 in) of precipitation over 11 days, with humidity levels at 66%. In contrast, June tends to be warmer, with temperatures starting at a minimum of 13°C (56°F) and peaking at 34°C (94°F), averaging 22°C (73°F). Precipitation is slightly less at 101 mm (4.0 in) over 10 days, and humidity is slightly lower at 65%. For a closer look at the specific climate in the region, check out Sirmione weather in June.

In comparing the weather between July and September, July tends to be hotter with average temperatures reaching 24°C (76°F) and maximums soaring up to 34°C (93°F). In contrast, September offers a more moderate climate with average temperatures around 20°C (68°F) and maximums peaking at 30°C (86°F). While both months experience rainfall, September sees slightly higher precipitation at 119 mm (4.7 in) over 11 days compared to July's 101 mm (4.0 in) spread across 14 days. Additionally, the humidity is a bit higher in September at 66%, compared to July's 61%. For a closer look at July weather specifics, you can explore Sirmione weather in July.

In comparing the weather between September and August, September tends to be cooler with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 30°C (86°F), while August features warmer temperatures, with a minimum of 14°C (58°F) and a peak of 36°C (96°F). Although September experiences slightly higher precipitation at 119 mm (4.7 in) over 11 days compared to August's 104 mm (4.1 in) over 12 days, it also has increased humidity at 66%, contrasting with August's lower humidity of 54%. For more specific details, you can refer to Sirmione weather in August.

In September, temperatures range from a minimum of 10°C (50°F) to a maximum of 30°C (86°F), with an average of 20°C (68°F). The month experiences about 119 mm (4.7 in) of precipitation over 11 days, accompanied by a relative humidity of 66%. In contrast, October sees cooler temperatures, with a minimum of 8°C (46°F) and a maximum of 26°C (80°F), averaging 15°C (59°F). Precipitation slightly decreases to 102 mm (4.0 in) over 9 days, while humidity rises to 83%. For more detailed insights, check Sirmione weather in October.

September and November present quite different weather patterns. In September, temperatures range from a minimum of 10°C (50°F) to a maximum of 30°C (86°F), with an average of 20°C (68°F). This month experiences moderate rainfall, totaling 119 mm (4.7 in) over about 11 days and a humidity level of 66%. In contrast, November sees a significant drop in temperatures, with a minimum of 2°C (36°F) and a maximum of 19°C (67°F), averaging just 10°C (50°F). Precipitation increases slightly to 135 mm (5.3 in) over 12 days, accompanied by higher humidity at 88%. For a detailed look at the weather conditions in November, visit Sirmione weather in November.

In September, the weather features a mild and pleasant climate with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 30°C (86°F), making it ideal for outdoor activities. However, it does experience moderate rainfall, with 119 mm (4.7 in) of precipitation over about 11 days and a humidity level of 66%.

In contrast, December brings a much colder atmosphere, with temperatures dropping significantly, averaging around 5°C (42°F) and peaking at just 13°C (56°F). The precipitation decreases to 87 mm (3.4 in) over 9 days, but humidity rises notably to 85%, creating a damp and chilly environment. For more details on December weather, you can check Sirmione weather in December.

Compare Sirmione's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Sirmione

As summer transitions into autumn, September in Sirmione offers a delightful retreat with warm days and cooler nights. This month stands out from the preceding summer months, as the daily maximum temperatures begin to dip, creating a more comfortable atmosphere for outdoor exploration. Despite a slight increase in rainfall, with about 11 days experiencing precipitation, the overall humidity level remains relatively pleasant. The average temperature settles around the comfortable 20°C (68°F), inviting visitors to savor the stunning landscapes without the sweltering heat. This shift in weather not only enhances the beauty of Sirmione's shores but also provides an ideal backdrop for leisure activities. For more detailed insights into the local weather patterns, explore the full Sirmione Climate.