Naples (FL) in September
In September, Naples (FL) averages 31°C (87°F) during the day and 24°C (75°F) at night, with frequent rain — about 27 days of the month see precipitation (188 mm total).
Off-peakConditions are warm and beach-friendly. Expect daily rain or showers, often in heavy bursts.
It's peak hurricane season in Naples (FL) during September. Travel is possible but expect storm risk, possible flight disruption, and generally lower travel insurance coverage.
How September compares to the rest of the year in Naples (FL)
September is in the middle of the year for warmth in Naples (FL) (4th of 12) and moderately rainy compared to the rest of the year (4th of 12). Daytime temperature runs 2°C above the annual average (28°C). September runs 1°C cooler than August (31°C) and cools 1°C in October (29°C).
September sunrise & sunset in Naples (FL)
Times shown for Naples (FL) local time (America/New_York), calculated for the 15th of September. They shift by a few minutes day to day across the month.
Photography light in Naples (FL) — September
Golden-hour and blue-hour windows for the 15th of September, in Naples (FL)'s local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Naples (FL) in September
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on September's tier (Off-peak) and Naples (FL)'s popularity.
Crowds & pricing — September in Naples (FL)
This is off-peak for Naples (FL) — the lowest prices of the year and the fewest crowds, but with real trade-offs: some restaurants, hotels, and beach businesses may close for the season; weather conditions can make outdoor activities unpredictable; and a handful of seasonal sights run reduced hours or close entirely. Great if you prefer a quiet local rhythm and don't mind the climate giving you reasons to choose indoor activities.
Why this tier: peak hazard season (1 active)
Sun & mosquito risk — September in Naples (FL)
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Sea temperature in Naples (FL) — September
Across the year Naples (FL)'s sea swings from 19.7°C (January) to 31.9°C (July) — September sits at 30.7°C.
Naples (FL) in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 23°C / 74°F | 14°C / 58°F | 55 mm | 13 | — |
| February | 26°C / 78°F | 17°C / 62°F | 37 mm | 12 | — |
| March | 27°C / 81°F | 18°C / 64°F | 35 mm | 12 | — |
| April | 29°C / 84°F | 20°C / 68°F | 54 mm | 17 | — |
| May | 31°C / 87°F | 22°C / 71°F | 103 mm | 20 | — |
| June | 31°C / 87°F | 24°C / 75°F | 189 mm | 28 | — |
| July | 31°C / 88°F | 25°C / 76°F | 151 mm | 30 | — |
| August | 31°C / 89°F | 25°C / 76°F | 176 mm | 30 | — |
| September | 31°C / 87°F | 24°C / 75°F | 188 mm | 27 | — |
| October | 29°C / 85°F | 22°C / 72°F | 78 mm | 20 | — |
| November | 27°C / 80°F | 19°C / 66°F | 65 mm | 14 | — |
| December | 25°C / 77°F | 17°C / 62°F | 51 mm | 12 | — |
Other cities with similar September weather
🌍 See the full ranked list of climate twins for Naples (FL) in September →
Frequently asked questions
How hot is Naples (FL) in September?
In September, Naples (FL) averages a high of 31°C (87°F) and a low of 24°C (75°F) — generally hot.
Does it rain a lot in Naples (FL) in September?
September is quite rainy in Naples (FL), with about 27 rainy days on average.
Is September a good time to visit Naples (FL)?
September is hot but on the rainy side. It suits travelers who are comfortable with hot weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Naples (FL) in September?
Pack lightweight, breathable clothing, sunglasses and sunscreen, plus a compact umbrella or rain jacket. See the full September packing list for Naples (FL) for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.