Last updated: February 24, 2025
September in Naples, United States, showcases a warm and humid climate, with maximum temperatures reaching up to 34°C (94°F) and an average of 28°C (82°F). The month typically experiences minimum temperatures around 23°C (73°F), providing a cozy backdrop for early autumn activities. However, residents and visitors should be prepared for significant precipitation, averaging 181 mm (7.1 in) over 21 days, reflecting the wet season. With humidity levels hovering around 83%, the air can feel quite sultry, making it essential to stay hydrated while enjoying the natural beauty of this coastal paradise.
In September, Naples, United States, experiences a warm transition from summer to fall, with temperatures often reaching their peak. The month typically witnesses a minimum of 23°C (73°F), an average of 28°C (82°F), and a maximum soaring to 34°C (94°F). This warmth reflects a pattern of gradually declining temperatures as summer retreats; in fact, it's one of the hottest months of the year, closely following August. As the sunshine continues to dominate the skies, the pleasant evenings invite outdoor activities, making it a perfect time for both locals and visitors to enjoy the vibrant atmosphere of this coastal gem. With such favorable warmth, September remains a delightful haven before the crisp air of autumn sets in.
September in Naples marks a significant transition in precipitation patterns, with an average rainfall of 181 mm (7.1 in) spread over 21 days. This month serves as a bridge between the intense summer rains of August, which is the wettest month at 221 mm (8.7 in), and the drier months that follow. The drop in precipitation from August to September indicates a notable shift, as the wettest months see closer to 26 days of rainfall. This trend suggests the onset of autumn, where daily rain becomes more intermittent, paving the way for a crisper, dryer October with only 89 mm (3.5 in) expected. Overall, September retains a certain lushness, marking a time of transition in the wet season in Naples.
September in Naples sees a return to a humid atmosphere, with levels reaching 83%, mirroring January’s humidity. Throughout the summer months, humidity fluctuates moderately, peaking in July at 77% before slightly dipping in May to 65%. However, as September rolls in, it's clear that the muggy embrace of late summer lingers, continuing into the fall. This consistency in humidity, at around 83%, suggests that Naples experiences a notable trend of high moisture levels during this transitional period, setting the stage for a warm and sultry autumn ahead.
In September, Naples experiences an UV Index of 11, ranking it in the extreme exposure category with a burn time of just 10 minutes. This trend of high UV levels continues from the previous months, where the index has remained consistently high, fluctuating between 12 in the summer and 10 in October. The month marks a slight dip from the peak summer indices, but sun safety remains crucial. With such intense UV radiation, it's essential for residents and visitors alike to take protective measures, as prolonged sun exposure can lead to serious skin damage. For more detailed information on UV trends throughout the year, visit Naples UV Index.
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As September unfolds in Naples, the sun generously casts its warm embrace for an impressive 308 hours this month, making it a delightful conclusion to the summer season. This marks a slight decline from the sun-drenched peak of 330 hours in July, yet it still outshines the earlier months of the year, reflecting a consistent trend of abundant sunshine throughout the summer. From January's modest 223 hours to the summer highs, the region showcases a vibrant increase in daylight, with April and May both drawing in 326 and 324 hours respectively. As the year transitions into autumn, Naples maintains a commendable average of sunshine, promising an inviting backdrop for outdoor activities and leisure before the cooler months set in.
In Naples, United States, the likelihood of sunny weather in September stands at 34%, indicating a marked dip compared to the sunnier months earlier in the year. As summer wraps up, there's a noticeable trend of declining sunshine, with the peak months of April and May boasting over 60% chances of sunny days. The downward trajectory continues into late summer, where August and September see the least robust prospects for sun, with August falling to just 18%. While September's likelihood of sunshine is better than the peak summer months, it still pales in comparison to the bright beginnings of the year, making it a transitional time as cooler autumn days approach.
As summer fades, September in Naples, United States marks a transition towards shorter days, with daylight averaging 12 hours. This reduction from the peak 13 hours in the summer months signifies the approach of autumn, inviting a shift in activities and routines. The gradual decrease in daylight hours, beginning in August, reflects a broader trend of waning sunlight that continues through the upcoming months. Although September enjoys a good amount of daylight reminiscent of the lush summer days, the encroaching darkness hints at the cooler, cozier evenings ahead. This blend of lingering warmth and the promise of fall’s arrival creates a unique ambiance that Naples residents and visitors alike can cherish.
As September rolls into Naples, the gentle whispers of the wind become a defining feature of the month, with average wind speeds dropping to a mild 2.4 m/s (5 mph). This marks a noticeable shift from the breezier summer months, where winds consistently hovered around 2.8-4.2 m/s. The transition to autumn brings a serene calm, with the softest breezes of the year creating an inviting atmosphere perfect for leisurely beachfront strolls. As the winds ease, the landscape reflects the onset of the changing season, hinting at the cooler days ahead. The trend shows that while the early months of the year showcase more vigorous gusts, September serves as a gentle reminder of nature’s seasonal rhythms, encouraging residents and visitors alike to embrace the tranquility that this time of year brings.
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 present stark contrasts in weather conditions. In September, temperatures range from a warm minimum of 23°C (73°F) to a sweltering maximum of 34°C (94°F), with an average temperature of 28°C (82°F). This month is also marked by significant rainfall, accumulating 181 mm (7.1 in) over 21 days, leading to a high humidity of 83%. In contrast, January offers a much cooler climate, with temperatures varying from a chilly 4°C (39°F) at night to a pleasant maximum of 28°C (82°F), averaging 19°C (66°F). Precipitation is minimal in January, with only 32 mm (1.3 in) over just 4 days, while the humidity remains steady at 83%. For more detailed information on January weather, visit Naples weather in January.
September and February exhibit stark contrasts in weather patterns. In September, temperatures typically range from a warm 23°C (73°F) at night to a scorching maximum of 34°C (94°F) during the day, with an average of 28°C (82°F). The month is characterized by high humidity at 83% and significant precipitation, accumulating 181 mm (7.1 in) over 21 days. In stark contrast, February's milder climate features a cooler minimum temperature of 6°C (43°F), an average of 21°C (70°F), and a maximum of 29°C (84°F). This month experiences much lower precipitation, with only 34 mm (1.3 in) falling over just 3 days and a humidity level of 80%. For further details on February weather, you can visit Naples weather in February.
In comparing the weather of September and March, a stark contrast emerges. September boasts a warmer climate, with temperatures ranging from a minimum of 23°C (73°F) to a maximum of 34°C (94°F), and high humidity at 83%. The month also experiences significant precipitation, totaling 181 mm (7.1 in) over 21 days. In contrast, March offers a milder experience with temperatures ranging from a cooler minimum of 9°C (48°F) to a maximum of 30°C (86°F). Additionally, March sees much less rainfall, with only 25 mm (1.0 in) over just 1 day and lower humidity levels at 75%. For more details on March weather specifically, you can explore Naples weather in March.
In September, the weather is notably warmer and more humid, with temperatures averaging around 28°C (82°F) and peaking at 34°C (94°F). This month experiences significant rainfall, approximately 181 mm (7.1 in) spread over 21 days, contributing to a high humidity of 83%. In contrast, April offers a more temperate climate, with lower temperatures ranging from a minimum of 13°C (56°F) to an average of 24°C (76°F) and a maximum of 32°C (89°F). Rainfall in April is much lighter, totaling about 43 mm (1.7 in) over just 8 days, and the humidity is more comfortable at 68%. For more detailed information, you can visit Naples weather in April.
When comparing the weather in September and May, it is evident that September tends to be warmer and more humid. In September, the minimum temperature is 23°C (73°F), with an average of 28°C (82°F) and a maximum reaching 34°C (94°F). This month also sees significant precipitation, with 181 mm (7.1 in) falling over 21 days, contributing to a high humidity level of 83%.
In contrast, May experiences slightly cooler temperatures, with a minimum of 18°C (65°F) and an average of 26°C (79°F), peaking at 33°C (91°F). Additionally, May has less rain, with 135 mm (5.3 in) spread over only 12 days, leading to a more comfortable humidity level of 65%. For those interested in the specific details of May weather, Naples weather in May provides further insights.
In comparing the weather of September and June, both months exhibit similar temperature ranges, with minimums around 23°C (73°F) and maximums peaking at 34°C (93°F in June and 94°F in September). September typically sees a slightly higher average temperature of 28°C (82°F) compared to June's average of 27°C (82°F). However, September is characterized by increased precipitation, totaling 181 mm (7.1 in) over 21 days, in contrast to June's 191 mm (7.5 in) over 22 days. Additionally, September experiences higher humidity at 83%, while June has a more comfortable level at 73%. For those interested in a deeper dive into June's weather specifics, check out Naples weather in June.
When comparing the weather in September to July, both months experience similar temperature patterns, with minimum temperatures around 23°C (73°F) and average highs of 28°C (82°F). However, September sees a slightly higher maximum temperature of 34°C (94°F), compared to July's peak of 33°C (91°F). Precipitation levels also differ, with September receiving 181 mm (7.1 in) over 21 days, while July experiences more rainfall, totaling 209 mm (8.2 in) across 26 days. Humidity is higher in September at 83%, compared to July’s 77%. For more details on July's climate, check out Naples weather in July.
When comparing the weather conditions between September and August, both months exhibit warm temperatures, but September tends to be slightly cooler. In September, the minimum temperature hovers at 23°C (73°F) with an average of 28°C (82°F) and a maximum reaching 34°C (94°F), while August starts at a slightly higher minimum of 24°C (76°F) and maintains an average of 28°C (83°F) with a maximum of 33°C (92°F). Precipitation levels are notably different, with September receiving 181 mm (7.1 in) over 21 days, compared to August's 221 mm (8.7 in) over 26 days. Additionally, September has a higher humidity level at 83%, compared to August's 80%. For more detailed weather insights, you can check Naples weather in August.
In September, the weather tends to be warmer with a minimum temperature of 23°C (73°F) and an average of 28°C (82°F), peaking at a maximum of 34°C (94°F). This month also experiences significant rainfall, with 181 mm (7.1 in) spread over 21 days and consistent humidity at 83%. In contrast, October sees a drop in temperature, with a minimum of 14°C (57°F) and an average of 26°C (80°F), while the maximum reaches 33°C (91°F). Precipitation decreases to 89 mm (3.5 in) over 14 days, maintaining the humidity level at 83%. For a more detailed overview of the climate, check out Naples weather in October.
September weather is characterized by high temperatures, with a minimum of 23°C (73°F) and an average of 28°C (82°F), peaking at a sweltering 34°C (94°F). This month also sees significant rainfall, with a total of 181 mm (7.1 in) spread over 21 days, resulting in high humidity levels of 83%. In contrast, November offers a much cooler climate, with temperatures dropping to a minimum of 10°C (50°F) and an average of 23°C (73°F), while still reaching up to 32°C (90°F) at times. Additionally, November experiences considerably less rainfall, totaling only 50 mm (2.0 in) over 7 days, but maintains the same humidity level of 83%. For more details on what to expect during this month, check out Naples weather in November.
In September, the weather is noticeably warmer, with temperatures ranging from a minimum of 23°C (73°F) to a maximum of 34°C (94°F) and an average of 28°C (82°F). The month sees significant rainfall, accumulating 181 mm (7.1 in) over 21 days, with humidity levels sitting at a high 83%. In contrast, December experiences much cooler temperatures, with a minimum of 8°C (46°F), an average of 20°C (69°F), and a maximum of 28°C (83°F). Precipitation drops to 43 mm (1.7 in) and occurs over just 5 days, while the humidity remains relatively stable at 84%. For more details on December weather, check out Naples weather in December.
As summer transitions into fall, September in Naples offers a unique blend of warm temperatures and notable humidity, with days still gracing residents and visitors with the potential for sun-soaked outings. Unlike the peak summer months, where sweltering heat prevails, September's average temperature feels more moderate yet still vibrant. However, prepare for frequent rain, as nearly two-thirds of the month can see precipitation, shaping this month as one filled with both intrigue and unpredictability. The heightened humidity levels add a tropical touch, creating a backdrop that diverges from the drier spells of the preceding months. If you're curious about how Naples' weather unfolds throughout the year, explore more details here: Naples Climate.