Monthly climate guide
Naples weather in September
September in Naples is typically hot, with average daytime highs around 30°C (86°F) and night-time lows near 27°C (80°F). The month usually brings about 212 mm of rain (very wet) and is often cloudy. Daytime highs are about the same as August and 2°C warmer than October.
What stands out in September
- Humidity near 79% makes 30°C feel stickier than it sounds.
- Rain is above Naples's usual level, by about 74%.
- Only 2 months are warmer in Naples than September.
- There's little difference between day and night (around 3°C).
Avg high
30°C
86°F
Avg low
27°C
80°F
Rainfall
212 mm
very wet
Humidity
79%
relative
Sky
56%
cloud · often cloudy
Naples weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 21°C / 70°F | 16°C / 61°F | 65 mm | 81% | 47% |
| February | 23°C / 73°F | 18°C / 64°F | 40 mm | 83% | 40% |
| March | 24°C / 75°F | 19°C / 66°F | 36 mm | 77% | 37% |
| April | 27°C / 80°F | 22°C / 72°F | 72 mm | 76% | 40% |
| May | 28°C / 83°F | 24°C / 76°F | 144 mm | 75% | 43% |
| June | 30°C / 85°F | 27°C / 80°F | 217 mm | 77% | 60% |
| July | 30°C / 87°F | 28°C / 82°F | 199 mm | 76% | 59% |
| August | 31°C / 87°F | 28°C / 82°F | 223 mm | 77% | 59% |
| September | 30°C / 86°F | 27°C / 80°F | 212 mm | 79% | 56% |
| October | 28°C / 83°F | 25°C / 76°F | 133 mm | 80% | 47% |
| November | 25°C / 77°F | 21°C / 69°F | 64 mm | 81% | 39% |
| December | 23°C / 74°F | 19°C / 66°F | 55 mm | 84% | 43% |
What to pack for September
- Light, breathable clothing (cotton or linen)
- A sun hat and high-SPF sunscreen
- A refillable water bottle
- A compact umbrella or packable rain jacket
- Water-resistant shoes
- Quick-dry fabrics — it feels stickier than the temperature suggests
Is September a good time to visit Naples?
Compare the months in the chart above to find your ideal window.
Best time to visit Naples →Other United States cities in September
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Naples weather in September. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/usa/naples-usa/september
<a href="https://weathercompare.eu/weather/usa/naples-usa/september">Naples weather in September</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/usa/naples-usa" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Naples weather in September"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/usa/naples-usa/september">Naples weather in September</a> – WeatherCompare</p>
Naples in September: quick answers
Is September a good time to visit Naples?
September is one of the wetter months in Naples, with about 212 mm of rain. You can still go: pack a rain jacket and keep plans flexible.
How warm is Naples in September?
Average highs are about 30°C (86°F) and average lows about 27°C (80°F), based on 10 years of daily data.
Does it rain a lot in Naples in September?
Naples typically gets around 212 mm of rain in September — very wet.
Figures are long-term averages for the area around Naples (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.