Naples
Florida, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Naples, FL

Magnificent aerial view of the white sandy shores of Naples in Florida, complete with a view of the city structure and plantation
Magnificent aerial view of the white sandy shores of Naples in Florida, complete with a view of the city structure and plantation
September brings 8.7" (221mm) of abundant rainfall in Naples as the city experiences warm and wet weather. The average temperatures are in the 74°F (23.3°C) to 92°F (33.3°C) range, while the seawater tends to be warm at 86°F (30°C).
Sweatshirts suit the humid atmosphere, but an umbrella is mandatory for outdoor visits. Early morning is an ideal time to visit the beach, while the wet weather sees them empty in the afternoons. Budget travelers should remember that September is a month of frequent storms in Naples. Expect plenty of rain amid sunny days.
  • Average high temperature in September: 91.6°F

The warmest month (with the highest average high temperature) is August (92.9°F).
The month with the lowest average high temperature is January (74.7°F).

  • Average low temperature in September: 73.6°F

The month with the highest average low temperature is August (74.2°F).
The coldest month (with the lowest average low temperature) is January (53.1°F).

  • Average rainfall in September: 8.7"

The wettest month (with the highest rainfall) is July (9.2").
The driest month (with the lowest rainfall) is December (1.7").

  • Average rainfall days in September: 15 days

The month with the highest number of rainy days is August (16 days).
The month with the lowest number of rainy days is April (4 days).

  • Average sea temperature in September: 85.6°F

The best month for swimming (with the highest average sea temperature) is August (87.2°F).
The coldest month (with the lowest average sea temperature) is January (66.6°F).

  • Average daylight in September: 12.3h

The month with the longest days is June (Average daylight: 13.8h).
The month with shortest days is December (Average daylight: 10.5h).

  • Average sunshine in September: 8.3h

The month with most sunshine is June (Average sunshine: 9.7h).
The month with least sunshine is January (Average sunshine: 4.8h).

  • Average UV index in September: 10

Months with the highest UV index are April, May, June, July and August (UV index 11).
Months with the lowest UV index are January and December (UV index 5).

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