September Weather in Genoa, Italy

Last updated: March 24, 2025

September in Genoa, Italy offers a delightful blend of warmth and mildness, with maximum temperatures reaching 28°C (82°F) and an average of 19°C (66°F), making it an ideal time for outdoor exploration. As autumn approaches, cooler nights can bring the temperature down to a refreshing 7°C (45°F). Visitors should be prepared for occasional rain, as precipitation totals around 93 mm (3.7 in) across approximately 11 rainy days, contributing to a humidity level of 74% that enhances the coastal breeze. This month beautifully balances warm days and cool evenings, providing a picturesque backdrop for discovering Genoa's rich history and vibrant culture.

September Temperature in Genoa

As summer gracefully gives way to autumn, September in Genoa, Italy brings a delightful transition in temperatures. With a minimum of 7°C (45°F) and an average high of 28°C (82°F), this month enjoys a perfect balance that invites exploration and outdoor activities. The average temperature of 19°C (66°F) offers a pleasant warmth without the sweltering heat of July and August, making it an ideal time to stroll along the historic waterfront or indulge in the local cuisine. As the region eases into fall, the drop from the summer's peak is gentle, hinting at cooler days ahead while still retaining enough warmth to bask in the beauty of this coastal gem.

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

The chart illustrates September temperature patterns in Genoa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec414447535967717265584943
Data source: Temperature data for Genoa 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 Genoa

September in Genoa, Italy marks a transition as the summer heat begins to wane, bringing an average precipitation of 93 mm (3.7 in) over approximately 11 days. This month stands out as slightly wetter than the preceding summer months of July and August, which recorded 59 mm (2.3 in) and 61 mm (2.4 in) respectively. As autumn approaches, the rainfall starts to edge closer to the 100 mm mark typical of spring, signaling a shift in the weather patterns. With a gradual increase in precipitation, September sets the stage for October's pronounced uptick, where the city often experiences the most substantial rainfall of the year. This trend illustrates Genoa's dynamic climatic shifts, showcasing a balance between the remnants of summer warmth and the impending cooler, wetter seasons.

September Precipitation Trends in Genoa

The chart displays monthly precipitation patterns in Genoa, 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.
JanFebMarAprMayJunJulAugSepOctNovDec708210110114877596193185199152
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Genoa

As summer transitions into autumn, September in Genoa experiences a notable shift in humidity, averaging around 74%. This marks a subtle increase from the summer's low of 64% in August, indicating that the drier heat is giving way to a more refreshing atmosphere. Comparing this to earlier months, September's humidity is higher than the mid-year levels, yet still significantly lower than the winter months, which can soar back up to 88% in November and remain high throughout the winter season. This gradual rise illustrates how the Mediterranean climate brings a delicate balance, where the pleasant warmth of early autumn mingles with the dampness that heralds the approach of fall.

September Average Humidity in Genoa

This chart illustrates the average monthly humidity levels in Genoa, 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.
JanFebMarAprMayJunJulAugSepOctNovDec88%81%76%77%74%71%67%64%74%87%88%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Genoa

As summer transitions into autumn in Genoa, Italy, the UV Index in September reflects a shift from the intense sunlight of the peak summer months. With a UV Index of 7, categorized as high, residents and visitors should be mindful of sun exposure, as the recommended burn time is 25 minutes. This marks a slight decrease from the very high levels of August, ensuring a more moderate outdoor experience. However, caution remains essential, especially for those engaging in extended outdoor activities. As you enjoy the pleasant September weather, don't forget to stay protected under the sun! For more detailed information, visit Genoa UV Index.

Maximum UV Index Levels in Genoa for September

The chart shows the monthly maximum UV Index (UVI) for Genoa 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.
JanFebMarAprMayJunJulAugSepOctNovDec236789987532
Data source: Genoa 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 Genoa

September in Genoa, Italy offers a delightful transition from the summer's peaks, basking in 339 hours of sunshine. As the sun begins to set on summer, the month still enjoys a generous glow, significantly more than the winter months ahead, with October dropping to 293 hours. This gradual decrease marks a shift from the sizzling July and June, which boast over 400 hours each, making September a sweet spot for warm weather enthusiasts. The early autumn vibes, combined with the fading summer warmth and less tourist congestion, create an idyllic atmosphere for exploring Genoa’s rich history and stunning coastal views.

Monthly Sunshine Duration in Genoa: September Highlighted

The September sunshine duration represents the total number of hours Genoa 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.
JanFebMarAprMayJunJulAugSepOctNovDec186h228h308h343h388h410h425h395h339h293h223h220h
Data source: Genoa September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Genoa During September

In Genoa, Italy, September offers a 46% chance of sunny weather, adding a pleasant touch to the transition into fall. This statistic is notably consistent with the late summer months, as August peaks at 57%, aligning with the region's general trend of increasing sunshine as the year progresses. While the likelihood of sunshine dips slightly from the summer's highs, it remains favorable compared to the earlier months of the year, where the chances fluctuate between 38% and 57%. As the vibrant hues of autumn begin to emerge, visitors can still look forward to those lovely sunny days that linger just before the cooler October weather sets in.

Percentage of Sunny Days in September in Genoa

The chart illustrates the percentage of sunny days in Genoa 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 Genoa experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec38%43%57%46%41%47%48%57%46%50%37%49%
Data source: Genoa September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Genoa in September

As summer fades into autumn, September in Genoa offers a delightful balance of daylight, providing about 12 hours of sunlight. Following the peak brightness of July and August, when the sun graces the city for 15 hours, September serves as a gentle transition, with daylight gradually waning as the days grow shorter. This reduction is a precursor to the milder months ahead, echoing the familiar rhythm of the seasons. With 14 hours of daylight in May and 13 in June, Genoa’s sunlight experience peaks in the summer, but even September retains enough warmth and light to enjoy the city's stunning coastal beauty. As the year progresses, daylight diminishes further, leading to the cozy, crisp days of autumn that follow into October and November, with only 10 and 9 hours of light respectively.

Average Daylight Hours in Genoa for September

The chart illustrates the variation in daylight duration in Genoa throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 14m10h 26m11h 56m13h 29m14h 48m15h 28m15h 7m13h 57m12h 28m10h 56m9h 34m8h 52m
Data source: Genoa daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Genoa

As September unfolds in Genoa, Italy, the breeze begins to mellow, with average wind speeds dipping to 2.0 m/s (4 mph). This marks the culmination of a gradual decline from summer's mild gusts, as the winds have consistently eased from 2.2 m/s in July to their gentlest in September. Following the lively months of June through August, where winds typically danced around 2.2 to 2.4 m/s, this transition signifies a soothing shift toward autumn. The gentle September winds create a tranquil atmosphere, perfectly complementing the city's rich history and stunning coastal views, setting the stage for the brisker breezes of October ahead. With average speeds primed to increase once more, this period offers a serene before the storm, inviting residents and visitors alike to bask in the charm of an early fall in this picturesque Italian city.

Average September Wind Speed in Genoa

The chart displays monthly wind speed patterns in Genoa, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.92.72.72.82.82.32.22.42.0 m/s3.03.52.5
Data source: Genoa September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Genoa Compares to Other Months

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

September and January present stark contrasts in weather patterns. In September, temperatures range from a mild 7°C (45°F) at night to a warm average of 19°C (66°F) and can peak at 28°C (82°F), accompanied by 93 mm (3.7 in) of precipitation over approximately 11 days and a humidity level of 74%. In contrast, January is much chillier, with temperatures dipping as low as -3°C (26°F) and averaging around 5°C (41°F), reaching a maximum of 14°C (57°F). The month experiences less rainfall at 70 mm (2.8 in) across about 8 days, but the humidity is notably higher at 88%. For more detailed information about January weather, you can visit Genoa weather in January.

September and February present contrasting weather patterns. In September, temperatures range from a minimum of 7°C (45°F) to a maximum of 28°C (82°F), creating a warm and pleasant environment with an average of 19°C (66°F). The month experiences 93 mm (3.7 in) of precipitation over approximately 11 days, with humidity at 74%. In stark contrast, February showcases a colder climate, with temperatures ranging from a minimum of -5°C (23°F) to a maximum of 17°C (63°F) and an average temperature of 7°C (45°F). This month receives slightly less precipitation, totaling 82 mm (3.2 in) over about 10 days, but maintains a higher humidity level at 81%. For more specific details about February weather in the region, check out Genoa weather in February.

In comparing the weather of September and March, we see notable differences in temperature and overall climate conditions. September tends to be warmer, with average temperatures ranging from a minimum of 7°C (45°F) to a maximum of 28°C (82°F), while March experiences cooler temperatures, with a range from -4°C (25°F) to a maximum of 20°C (68°F). Precipitation levels are relatively close, with September receiving 93 mm (3.7 in) over 11 days and March seeing slightly more at 101 mm (4.0 in) over just 10 days. Additionally, humidity is high in both months, with September at 74% and March slightly higher at 76%. For more detailed information, you can check Genoa weather in March.

September and April offer distinct weather experiences. In September, temperatures range from a minimum of 7°C (45°F) to a maximum of 28°C (82°F), averaging around 19°C (66°F). This month typically sees about 93 mm (3.7 in) of precipitation over approximately 11 days, with a humidity level of 74%. In contrast, April starts cooler with temperatures ranging from 1°C (34°F) to 24°C (76°F) and an average of 12°C (53°F). It experiences slightly higher precipitation at 100 mm (4.0 in) over the same number of days, while humidity remains close at 77%. For more detailed insights on April weather, visit Genoa weather in April.

In September, the weather typically offers a comfortable range of temperatures, with a minimum of 7°C (45°F) and an average of 19°C (66°F), reaching a pleasant maximum of 28°C (82°F). While the humidity remains consistent at 74%, the month sees less rainfall, averaging 93 mm (3.7 in) over about 11 days. In contrast, May experiences slightly cooler conditions, with temperatures ranging from a minimum of 3°C (38°F) to an average of 15°C (60°F), peaking at a similar maximum of 28°C (83°F). However, it is notably wetter, with total precipitation of 147 mm (5.8 in) across 17 days while maintaining the same humidity level. For more details on May weather, check out Genoa weather in May.

In comparing the weather of September and June, September typically sees slightly cooler temperatures, with a minimum of 7°C (45°F) and a maximum of 28°C (82°F), resulting in an average temperature of 19°C (66°F). Conversely, June starts with warmer nights, as the minimum temperature is 11°C (52°F), peaking at 33°C (91°F) during the day, with an average of 20°C (68°F). While both months experience notable precipitation, June has a slightly lower total at 77 mm (3.0 in) over about 10 days compared to September's 93 mm (3.7 in) over 11 days. Humidity levels are comparable, with September at 74% and June at 71%. For more specific details on the conditions in June, you can refer to Genoa weather in June.

In comparing the weather between September and July, we observe notable differences. September features a broader temperature range, with a minimum of 7°C (45°F) and a maximum of 28°C (82°F), resulting in an average temperature of 19°C (66°F). In contrast, July is warmer overall, with minimum temperatures of 14°C (58°F) and maximums reaching 31°C (88°F), averaging around 22°C (71°F). Additionally, September experiences more precipitation, totaling 93 mm (3.7 in) over 11 days, while July has only 59 mm (2.3 in) across 9 days. Humidity levels are slightly higher in September at 74%, compared to July's 67%. For more detailed weather conditions during July, you can check Genoa weather in July.

The weather in September shows a noticeable shift compared to August. While August boasts warmer temperatures with a minimum of 13°C (56°F) and an average of 22°C (72°F), September cools down to a minimum of 7°C (45°F) and an average of 19°C (66°F). The maximum temperature in August can reach up to 30°C (87°F), whereas September peaks at 28°C (82°F). Additionally, September experiences higher precipitation levels, with 93 mm (3.7 in) over 11 days, compared to August's 61 mm (2.4 in) over 12 days. Notably, humidity increases in September to 74%, compared to 64% in August. For more details on the climate, check out Genoa weather in August.

In September, the weather typically features a mild range of temperatures, with a minimum of 7°C (45°F) and a maximum of 28°C (82°F), creating an average of 19°C (66°F). With 93 mm (3.7 in) of precipitation spread over 11 days, humidity levels hover around 74%. In contrast, October sees a noticeable drop in average temperatures, with minimums at 6°C (43°F) and maximums reaching 24°C (75°F), leading to an overall average of 14°C (58°F). Rainfall increases significantly to 185 mm (7.3 in) across 12 days, raising humidity levels to 87%. For more detailed insights, visit Genoa weather in October.

September typically presents a more moderate climate, with average temperatures around 19°C (66°F) and highs reaching up to 28°C (82°F). The month experiences 93 mm (3.7 in) of precipitation over approximately 11 days, coupled with a humidity level of 74%. In contrast, November ushers in considerably cooler conditions, with average temperatures dropping to 10°C (50°F) and highs peaking at 17°C (63°F). This month sees increased rainfall, totaling 199 mm (7.8 in) across 15 days, and a rise in humidity levels to 88%. For those interested in exploring more about the weather during this time, check out Genoa weather in November.

September weather typically presents a warm atmosphere with average temperatures around 19°C (66°F), peaking at 28°C (82°F), while enjoying relatively moderate humidity at 74%. In contrast, December ushers in a chillier ambiance, where temperatures drop significantly, averaging only 6°C (43°F) and reaching a maximum of 16°C (60°F). Notably, December experiences increased precipitation, with 152 mm (6.0 in) of rain over 10 days and a rise in humidity to 85%. For more details on December conditions, check out Genoa weather in December.

Compare Genoa's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Genoa

As September unfolds in Genoa, visitors are greeted with a delightful blend of warm temperatures and refreshing breezes, making it a fantastic time to explore the city. While the maximum temperatures hover comfortably around 28°C, the air retains a pleasant average of 19°C, offering a reprieve from the sweltering heat of summer. However, September does bring a slight increase in precipitation, with about 11 rainy days contributing to an overall humidity of 74%. This combination of moderate warmth and occasional showers sets September apart, creating a unique atmosphere that enhances the beauty of Genoa. For a deeper dive into what to expect, check out the details on Genoa Climate.