Last updated: March 24, 2025
September in Naples, Italy offers a delightful blend of warm temperatures and occasional rainfall, making it an inviting time to explore this vibrant city. With maximum temperatures reaching 28°C (83°F) and an average of 23°C (74°F), visitors can enjoy pleasant days perfect for sightseeing. The evenings cool down to a comfortable 15°C (59°F), providing a refreshing respite. Expect about 96 mm (3.8 in) of precipitation over 9 days, resulting in a 65% humidity level that adds a touch of Mediterranean charm to the atmosphere. Embrace the mix of sun and gentle rain as you discover the rich history and culture that Naples has to offer in September.
September in Naples, Italy, signals the gentle transition from the intense heat of summer to the milder embrace of fall. With minimum temperatures settling around 15°C (59°F) and averaging a comfortable 23°C (74°F), the weather is ideal for exploring the city's rich history and stunning coastline. Daytime highs can reach up to 28°C (83°F), perfect for enjoying leisurely afternoons at the beach or savoring gelato in vibrant piazzas. As the month progresses, you'll notice a subtle drop in temperatures, hinting at the approaching autumn, making September an exquisite time for visitors to experience the beauty of Naples without the summer crowds.
As summer transitions into autumn, September marks a notable increase in precipitation for Naples, with an average of 96 mm (3.8 in) of rainfall spread across about 9 days. This uptick follows the dry months of July and August, which each recorded only 12 mm (0.5 in). The weather in September typically features more frequent showers, signaling the approach of the wetter autumn months. While still far from the deluge of November's 285 mm (11.2 in), September's rain lays the groundwork for the lush, vibrant landscapes that the season brings. The shift in precipitation patterns not only refreshes the earth but also provides a glimpse into the changing climate as Naples prepares for its wetter, more variable months ahead.
September in Naples, Italy, marks a transitional phase in humidity levels as summer fades into fall. With an average humidity of 65%, the month sees a noticeable rise from the drier summer months of July and August, which recorded humidity levels of 57% and 53%, respectively. This increase reflects a shift towards the wetter autumn, where humidity begins to climb, peaking at 75% in October. Travelers can expect a refreshing breeze, yet it's wise to prepare for the lingering warmth while enjoying the city’s vibrant culture as summer tourism gradually gives way to a more tranquil autumn atmosphere.
As September unfolds in Naples, Italy, the UV Index hovers at 8, placing it squarely in the very high exposure category. This marks a slight decline from the peak summer months of July and August, which both reached a UV Index of 10. Nevertheless, sun-seekers should remain vigilant, as the burn time reduces to just 15 minutes. The steady trend of high to very high UV levels prevalent in the region since spring underscores the importance of sun protection throughout the month. As you enjoy Naples’ beautiful beaches and historic sites, don't forget your sunscreen! For more information, check the Naples UV Index to stay informed and safely enjoy the sun.
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As September rolls into Naples, Italy, the city basks in a generous 336 hours of sunshine, making it one of the sunniest months of the year. Following the peak of summer in July, where daylight stretches for 424 hours, the sun begins to cast a softer glow in September, still far more radiant than the winter months ahead. The transition into autumn is marked by a notable decline in sunshine from July’s blissful heights, yet September remains a vibrant time brimming with mild warmth and dazzling days, offering a delightful experience for both locals and visitors alike. This trend showcases Naples' beautiful progression from the intense summer sun towards a more temperate autumn, inviting everyone to enjoy its lingering rays.
In September, Naples enjoys a 56% chance of sunny weather, marking a delightful transition from the summer's peak. This month bridges the gap between the hot, sun-soaked days of July and August—boasting probabilities of 79% and 80%, respectively—and the cooler, more variable conditions of October, which slips down to 44%. As summer fades, the likelihood of sunshine decreases slightly, yet September remains one of the more favorable months to soak up the sun. With this balanced climate, visitors can still indulge in pleasant days while exploring the rich culture and stunning landscapes of this beautiful Italian city.
As summer fades into autumn, September in Naples, Italy, experiences a gentle decline in daylight, providing about 12 hours of sun each day. This marks a transition from the peak daylight of June, with its impressive 15 hours, to the more subdued hours of October and beyond. The month stands out as a bridge between the vibrant, sun-soaked days of summer and the shorter, cozier days of fall. While September still basks in a generous amount of light, it's a reminder of the seasonal ebb and flow, inviting both locals and visitors to savor the lingering warmth before the cooler months set in.
As summer transitions to autumn in Naples, Italy, the September wind brings a gentle serenity, with an average speed of 2.9 m/s (about 7 mph). This marks a noticeable decline from the breezier summer months, where wind speeds hovered around 3.0 to 3.4 m/s. The calming currents of September set the stage for a peaceful ambiance, as locals and tourists alike enjoy the city’s vibrant outdoor scenes without the typical heat of the sweltering summer. Looking ahead, the winds pick up again in October, suggesting that while September may slow down the pace, it serves as a beautiful prelude to the invigorating gusts of fall.
The weather in Naples 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 Naples and find detailed weather information for every month.
September and January showcase contrasting weather patterns. In September, temperatures range from a minimum of 15°C (59°F) to a maximum of 28°C (83°F), offering a pleasant average of 23°C (74°F). The month experiences 96 mm (3.8 in) of rainfall over about 9 days, with a humidity level of 65%, creating a warm and moderately humid atmosphere. In contrast, January temperatures drop significantly, with minimums around 1°C (33°F) and maximums reaching only 17°C (63°F), resulting in a cooler average of 11°C (52°F). This month tends to be wetter, with 116 mm (4.6 in) of precipitation spread over 11 days and higher humidity at 84%. For more details, you can check Naples weather in January.
September and February exhibit distinctly different weather patterns. In September, temperatures range from a mild 15°C (59°F) at night to a warm 28°C (83°F) during the day, with an average of 23°C (74°F). The month sees about 96 mm (3.8 in) of precipitation over nine days, coupled with a humidity level of 65%. In contrast, February experiences cooler temperatures, with a minimum of 2°C (37°F) and a maximum of 16°C (62°F), averaging just 12°C (53°F). Precipitation in February is slightly higher at 113 mm (4.5 in) over ten days, and humidity rises to 76%. For a detailed look at February in Naples, you can visit Naples weather in February.
September and March present contrasting weather patterns, reflecting the shift from late summer to early spring. In September, temperatures are noticeably warmer, with a minimum of 15°C (59°F) and an average of 23°C (74°F), peaking at 28°C (83°F). This month also experiences slightly more precipitation, totaling 96 mm (3.8 in) over about 9 days, and a humidity level of 65%. In contrast, March sees cooler conditions, with temperatures dropping to a minimum of 3°C (38°F) and averaging 12°C (54°F), maxing out at 17°C (63°F). Precipitation in March is relatively close, at 88 mm (3.4 in) across 10 days, accompanied by a slightly higher humidity of 69%. For those interested in the specifics of March weather, more information can be found here: Naples weather in March.
The weather in September is generally warmer and more humid compared to April. In September, temperatures range from a minimum of 15°C (59°F) to a maximum of 28°C (83°F), with an average of 23°C (74°F), while April sees a cooler temperature range of 7°C (46°F) to 23°C (74°F) and an average of just 14°C (58°F). Additionally, September experiences higher precipitation levels, with 96 mm (3.8 in) over 9 days, compared to April's 51 mm (2.0 in) across the same number of days. Interestingly, humidity is slightly higher in April at 70%, compared to 65% in September. For more details on April weather, visit Naples weather in April.
In comparing the weather between September and May, September tends to be warmer with average temperatures reaching up to 23°C (74°F) and daily highs reaching 28°C (83°F), while May’s average temperature is slightly cooler at 18°C (65°F) with a maximum of 26°C (79°F). September experiences more precipitation, with 96 mm (3.8 inches) spread over 9 days, compared to May's 57 mm (2.2 inches) over 7 days. Additionally, while humidity is slightly lower in September at 65%, it is marginally higher in May at 70%. For more detailed insights on weather during this month, you can refer to Naples weather in May.
When comparing the weather in September and June, September tends to be slightly warmer with average temperatures reaching around 23°C (74°F), whereas June sees an average of 22°C (73°F). Both months have relatively mild minimum temperatures, with June starting at 16°C (60°F) and September at 15°C (59°F). However, September is notably wetter, receiving 96 mm (3.8 in) of precipitation over 9 days, compared to June's much drier 21 mm (0.8 in) over just 2 days. Humidity levels are also similar, with September at 65% and June at 61%. For more detailed insights about weather conditions in June, you can check Naples weather in June.
When comparing the weather in September to July, several differences emerge. September experiences a minimum temperature of 15°C (59°F) and an average of 23°C (74°F), while July is warmer, with a minimum of 21°C (71°F) and an average of 25°C (77°F). Although September boasts a higher maximum temperature of 28°C (83°F), both months see relatively close highs, with July peaking at 29°C (84°F). A notable distinction is the precipitation; September receives significantly more rain, totaling 96 mm (3.8 in) over 9 days, compared to July's 12 mm (0.5 in) over just 2 days, making July a drier month. Humidity levels are also higher in September at 65%, compared to 57% in July. For a more detailed look at the weather trends, you can check Naples weather in July.
In comparing the weather between September and August, we observe notable differences. September experiences cooler temperatures, with a minimum of 15°C (59°F) and an average of 23°C (74°F), whereas August has warmer conditions, featuring a minimum of 21°C (70°F) and an average of 26°C (79°F). Additionally, September tends to be wetter, with 96 mm (3.8 in) of precipitation over 9 days, in stark contrast to August’s milder 12 mm (0.5 in) of rain occurring just 1 day. The humidity also increases in September, registering at 65% compared to 53% in August, contributing to a more humid feel as summer transitions into autumn. For a more detailed overview of August weather, you can also check Naples weather in August.
In September, the weather is generally warmer, with average temperatures reaching 23°C (74°F) and maximums hitting 28°C (83°F). Humidity is moderate at 65%, and the month sees around 96 mm (3.8 in) of precipitation over approximately 9 days. In contrast, October experiences cooler temperatures, with an average of 19°C (67°F) and highs of 25°C (77°F). The month also tends to be slightly wetter, with 100 mm (3.9 in) of rainfall occurring over about 10 days, accompanied by increased humidity at 75%. For more detailed weather insights, you can check Naples weather in October.
September tends to be warmer and drier compared to November, with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 28°C (83°F) and an average of 23°C (74°F). In contrast, November brings cooler temperatures, with a minimum of 9°C (49°F) and a maximum of 22°C (72°F), averaging 16°C (62°F). Additionally, November experiences significantly more rainfall, totaling 285 mm (11.2 in) over 17 days, compared to September's 96 mm (3.8 in) across 9 days. The humidity also increases in November, reaching 81%, while September's humidity stands at 65%. For more detailed information, check out Naples weather in November.
September weather in Naples generally features milder temperatures, with minimums around 15°C (59°F), averaging 23°C (74°F) during the day and peaking at 28°C (83°F). This month experiences moderate precipitation, totaling 96 mm (3.8 in) over about nine days, and humidity levels are relatively comfortable at 65%.
In contrast, December brings a notable drop in temperatures, with minimums dropping to 7°C (44°F) and an average of only 13°C (56°F). The maximum temperature hovers around 18°C (64°F). The rainfall significantly increases to 206 mm (8.1 in), spread over 16 days, and humidity rises to a higher 84%. For more details, you can check Naples weather in December.
As summer gradually gives way to autumn, September in Naples presents a delightful transition characterized by mild temperatures and an inviting atmosphere. Unlike the sweltering heat of July and August, where the mercury often soars, September boasts a more comfortable average temperature that encourages outdoor exploration. However, this month also brings a slight increase in precipitation, with more rainy days compared to the drier summer months, prompting a lush revival of greenery across the region. With a pleasant humidity level, the weather remains enjoyable for sightseeing, making September one of the best times to experience the charm of Naples. For those interested in the broader trends of the seasons, visit Naples Climate for more insights.