September Weather in Lucca, Italy

Last updated: March 24, 2025

Experience the enchanting September weather in Lucca, Italy, where temperatures typically reach a maximum of 32°C (91°F) and an inviting average of 21°C (70°F). As the summer heat begins to wane, temperatures can dip to a minimum of 7°C (44°F), offering a refreshing contrast. With 97 mm (3.8 in) of precipitation spread over 10 days, Lucca enjoys a blend of sunny days and gentle rain, contributing to its lush landscape. You'll find the air is comfortably humid, with an average of 66% humidity, making it a lovely time to explore this historic city and its charming surroundings.

September Temperature in Lucca

In September, Lucca, Italy, showcases a delightful transition from the sweltering summer to the gentle embrace of early autumn. With minimum temperatures averaging around 7°C (44°F) and rising to a pleasant average of 21°C (70°F), the weather invites visitors to enjoy outdoor adventures. The maximum daily highs reach a comfortable 32°C (91°F), ensuring that lingering warmth still graces the region as summer wanes. This combination creates a perfect backdrop for leisurely strolls through Lucca's historic streets, al fresco dining, and soaking up the vibrant local culture as the landscape begins to shift into the beautiful hues of fall.

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

The chart illustrates September temperature patterns in Lucca, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec434750566372767770615345
Data source: Temperature data for Lucca 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 Lucca

In September, Lucca experiences a noticeable uptick in precipitation, with an average of 97 mm (3.8 in) falling over 10 days. This marks a shift from the drier summer months, particularly July and August, which recorded only 35 mm (1.4 in) and 32 mm (1.2 in), respectively. As autumn approaches, the rainfall levels rise sharply, paving the way for a transition into the wetter months ahead, exemplified by the even more significant precipitation expected in October and November. This trend underscores September as a pivotal month where summer's dry spell gives way to the lush, vibrant hues of fall, inviting both locals and visitors to embrace the changing landscape.

September Precipitation Trends in Lucca

The chart displays monthly precipitation patterns in Lucca, 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.
JanFebMarAprMayJunJulAugSepOctNovDec70968210410449353297116153173
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Lucca

In September, Lucca, Italy, experiences a slight uptick in humidity at 66%, marking a transition as summer gradually yields to autumn. This increase follows a notably drier stretch in the peak summer months of July and August, when humidity levels dipped to their lowest at 57% and 55%, respectively. As the warm, sun-soaked days of late summer give way to the cooler, crisper air of fall, September serves as a bridge—balancing the lingering warmth with the impending moisture of October, which spikes back up to 79%. Overall, the humidity patterns in Lucca reveal a gentle ebb and flow, where summer's dry heat makes way for the more humid conditions typical of the fall season.

September Average Humidity in Lucca

This chart illustrates the average monthly humidity levels in Lucca, 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.
JanFebMarAprMayJunJulAugSepOctNovDec84%76%68%70%69%62%57%55%66%79%84%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Lucca

As the summer draws to a close, September in Lucca, Italy experiences a UV Index of 7, indicating a high exposure category with a burn time of 25 minutes. This marks a slight decrease from the intense levels of the preceding months, where the UV Index peaked at 10 in June. Although the sun's rays are still potent, September offers a more manageable level of UV exposure compared to the sweltering heights of July and August. As autumn approaches, it's important to stay mindful of sun protection, especially during the midday hours. For a detailed overview of UV levels throughout the year, visit Lucca UV Index.

Maximum UV Index Levels in Lucca for September

The chart shows the monthly maximum UV Index (UVI) for Lucca 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.
JanFebMarAprMayJunJulAugSepOctNovDec2467810987532
Data source: Lucca 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 Lucca

September in Lucca, Italy, feels like a gentle transition between the sun-drenched energy of summer and the cool embrace of autumn. With an impressive 341 hours of sunshine, this month boasts a delightful balance, providing ample opportunities to explore the city's enchanting architecture and picturesque streets. As summer wanes, September's sunshine is notably less than the peak of 434 hours seen in July, yet still vibrant enough compared to the earlier months of the year. This period serves as a sweet farewell to the warmth, inviting residents and visitors alike to enjoy outdoor cafes and historical landmarks under the soft glow of early autumn sunlight. As the days grow shorter in October, the lingering warmth of September leaves a cherished memory of the summer's end in this beautiful Tuscan gem.

Monthly Sunshine Duration in Lucca: September Highlighted

The September sunshine duration represents the total number of hours Lucca 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.
JanFebMarAprMayJunJulAugSepOctNovDec194h250h322h354h398h420h434h404h341h312h241h222h
Data source: Lucca September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Lucca During September

In September, Lucca, Italy enjoys a 57% chance of sunny weather, continuing the trend of relatively high sunlight seen from the summer months. Following the peak sun exposure during August, which boasts a 65% chance, September offers a pleasant balance of warmth without the sweltering heat, as daylight begins to subtly wane. This month mirrors the sunlit disposition of June and July, underscoring Lucca's reputation for delightful early autumn weather. Whether exploring the charming streets or sipping wine outdoors, visitors in September can expect a favorable mix of sunshine and mild temperatures, making it an ideal time for summer’s beautiful remnants.

Percentage of Sunny Days in September in Lucca

The chart illustrates the percentage of sunny days in Lucca 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 Lucca experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec33%45%63%48%43%57%60%65%57%47%36%44%
Data source: Lucca September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Lucca in September

As September unfolds in Lucca, Italy, the days begin to shorten after the sun-drenched summer months, providing approximately 12 hours of daylight. This shift marks a gentle transition from the long, bright days of July and August, where daylight peaked at 15 hours. The steady decrease from spring and summer’s abundance serves as a reminder of the approaching autumn, with daylight dwindling to 10 hours by October. Each passing month reveals a rhythmic dance of light and shadow, shaping the vibrant atmosphere of this charming Tuscan city as it prepares for the cozier days ahead.

Average Daylight Hours in Lucca for September

The chart illustrates the variation in daylight duration in Lucca throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 20m10h 29m11h 57m13h 26m14h 43m15h 21m15h 1m13h 53m12h 27m10h 58m9h 39m8h 58m
Data source: Lucca daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Lucca

As September unfolds in Lucca, Italy, a gentle breeze graces the city, with an average wind speed of 1.6 m/s (4 mph). This soft wind, slightly milder than the preceding summer months, reflects a transition from the warm days of August into the crispness of autumn. While July and August experience a steadier breeze, September’s calm wind invites leisurely strolls along Lucca's historic walls, setting the perfect backdrop for savoring the city's enchanting atmosphere. As autumn approaches, one can anticipate a gradual increase in wind speeds, suggesting a shift in the air, welcoming the vibrant colors and cooler temperatures of the season.

Average September Wind Speed in Lucca

The chart displays monthly wind speed patterns in Lucca, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.22.12.12.12.31.51.81.81.6 m/s2.12.41.7
Data source: Lucca September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Lucca Compares to Other Months

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

September and January exhibit striking contrasts in their weather patterns. September boasts a warm climate with average temperatures reaching 21°C (70°F) and highs peaking at 32°C (91°F), making it a pleasant month for outdoor activities. Conversely, January experiences much cooler conditions, with an average temperature of only 6°C (43°F) and nighttime lows dipping to -4°C (25°F). In terms of precipitation, September sees heavier rainfall with 97 mm (3.8 in) over about 10 days, compared to January's 70 mm (2.8 in) across 8 days. Additionally, January's humidity is noticeably higher at 84%, while September has a relatively mild humidity of 66%. For more detailed information on January weather, you can check this link: Lucca weather in January.

September and February present contrasting weather experiences. In September, temperatures range from a comfortable 7°C (44°F) at night to a warm 32°C (91°F) during the day, with an average of 21°C (70°F) and humidity at 66%. This month typically sees about 97 mm (3.8 in) of precipitation over 10 days. In stark contrast, February brings colder conditions with temperatures dropping to a minimum of -5°C (23°F) and reaching a maximum of 18°C (65°F), averaging 8°C (47°F). Despite similar total precipitation at 96 mm (3.8 in) over 10 days, February boasts higher humidity at 76%, creating a crisp and chilly atmosphere. For more details on February weather in Lucca, visit Lucca weather in February.

September and March present distinctly different weather patterns. September tends to be warmer, with average temperatures ranging from a minimum of 7°C (44°F) to a maximum of 32°C (91°F), while March experiences cooler conditions, with temperatures fluctuating from -4°C (25°F) to 23°C (73°F). In terms of precipitation, September sees slightly more rainfall at 97 mm (3.8 in) over about 10 days, compared to March's 82 mm (3.2 in) over 9 days. Both months exhibit high humidity levels, with September at 66% and March slightly higher at 68%. Those interested in the specifics of March weather in Lucca can refer to this link: Lucca weather in March.

In comparing the weather between September and April, September offers warmer temperatures with a minimum of 7°C (44°F) and an average reaching 21°C (70°F), peaking at 32°C (91°F). In contrast, April experiences cooler conditions, where temperatures can drop to a minimum of -1°C (31°F) and averages only 13°C (56°F), with a maximum of 27°C (81°F). Both months see a similar amount of precipitation, with September recording 97 mm (3.8 in) over 10 days and April slightly higher at 104 mm (4.1 in) across 9 days. Humidity levels are also comparable, with September at 66% and April at 70%. For those interested in more detailed weather information, you can visit Lucca weather in April.

September and May exhibit distinct weather patterns, each offering unique experiences. In September, temperatures range from a minimum of 7°C (44°F) to a maximum of 32°C (91°F), with an average of 21°C (70°F) and relatively low precipitation of 97 mm (3.8 in) over about 10 days, resulting in a humidity level of 66%. In contrast, May sees slightly cooler temperatures, with a minimum of 6°C (43°F) and an average high of 32°C (89°F), but the overall average hovers around 17°C (63°F). Precipitation in May is a bit higher at 104 mm (4.1 in) spread over 14 days, contributing to a marginally higher humidity of 69%. For detailed insights on May weather, you can check Lucca weather in May. Overall, while both months can reach the same maximum temperature, September tends to be warmer on average, whereas May is characterized by more frequent rainfall.

In comparing the weather of September and June, one can observe distinct differences in temperature and precipitation patterns. September boasts a broader temperature range with a minimum of 7°C (44°F) and a maximum of 32°C (91°F), while June is milder, featuring a minimum of 12°C (53°F) and a maximum of 35°C (95°F). June typically experiences less rainfall, with only 49 mm (1.9 in) over approximately 6 days, compared to September's 97 mm (3.8 in) spread across about 10 days. Additionally, September has a slightly higher humidity level at 66%, compared to June's 62%. For more detailed information on June weather, visit Lucca weather in June.

In September, the weather tends to be milder than in July, with temperatures ranging from a minimum of 7°C (44°F) to a maximum of 32°C (91°F), averaging around 21°C (70°F). This month also experiences higher precipitation, totaling 97 mm (3.8 in) over about 10 days, along with a humidity level of 66%. In contrast, July is warmer, with minimum temperatures of 14°C (58°F) and maximums reaching 35°C (95°F), averaging around 24°C (76°F). Rainfall in July is considerably lower, at 35 mm (1.4 in) over just 6 days, and the humidity is somewhat less, at 57%. For more detailed information, you can check Lucca weather in July.

In September, the weather tends to be cooler and more variable compared to August. With minimum temperatures dropping to 7°C (44°F) and an average of 21°C (70°F), September presents a significant shift from August's warmer minimum of 13°C (55°F) and average temperature of 25°C (77°F). August enjoys higher maximum temperatures hitting 35°C (95°F), while September reaches a maximum of 32°C (91°F). Additionally, September experiences more rainfall, with 97 mm (3.8 in) over approximately 10 days, in contrast to the drier conditions of August, which only sees 32 mm (1.2 in) over 5 days. Moreover, September has a higher humidity level at 66%, compared to August's 55%. For more detailed insights, check out Lucca weather in August.

September typically offers warmer temperatures, with averages around 21°C (70°F) and maximums reaching up to 32°C (91°F), making it feel more summery. In contrast, October sees a noticeable drop, with average temperatures dropping to 16°C (61°F) and highs of 26°C (79°F). Additionally, October experiences slightly increased precipitation, totaling 116 mm (4.6 in) over 11 days, compared to September's 97 mm (3.8 in) over 10 days, while humidity also rises to 79%. This shift marks a transition into a cooler, more autumnal climate. For detailed insights, check Lucca weather in October.

September and November present contrasting weather patterns. In September, temperatures range from a comfortable minimum of 7°C (44°F) to a warm maximum of 32°C (91°F), with an average of 21°C (70°F). The month experiences relatively low precipitation at 97 mm (3.8 in) over about 10 days, and humidity averages 66%. In stark contrast, November sees much cooler temperatures, with a minimum of -1°C (31°F) and a maximum of 20°C (69°F), settling at an average of 11°C (53°F). Additionally, this month records higher precipitation of 153 mm (6.0 in) across 14 days and increased humidity of 84%. For more information on November weather, check out Lucca weather in November.

September and December present strikingly different weather conditions. In September, temperatures range from a comfortable 7°C (44°F) at night to a warm 32°C (91°F) during the day, with an average of 21°C (70°F). The month sees about 97 mm (3.8 in) of precipitation over approximately 10 days and a moderate humidity level of 66%. In contrast, December brings a sharp drop in temperatures, with a minimum of -3°C (27°F) and a maximum of only 17°C (62°F), averaging around 7°C (46°F). Precipitation increases to 173 mm (6.8 in) over 15 days, accompanied by higher humidity at 83%. For more details, check out Lucca weather in December.

Compare Lucca's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Lucca

As September unfolds in Lucca, it brings a delightful transition from the summer heat to milder temperatures, making it a unique month in the annual climate cycle. With average daily highs still reaching a pleasant 32°C (91°F), visitors can relish in warm days, while the cooler nights dipping to around 7°C (44°F) offer a refreshing contrast. Humidity levels settle at a comfortable 66%, and though there may be some rain, with 10 days of precipitation totaling 97 mm (3.8 in), the showers often come as a welcomed respite. This blend of warmth and occasional rain makes September an ideal time to explore the beauty of Lucca. For a comprehensive understanding of what to expect throughout the year, check out the full details on Lucca Climate.