Florida Keys weather in September (United States of America)
Curious about the September weather in Florida Keys? Wondering if it's a favorable time for a visit? This page provides detailed information on the weather conditions for that month.
In September, the weather in Florida Keys typically experiences
very high temperatures
and heavy rainfall.
Daytime temperatures hover around 31°C (show in °F),
while nights can cool down to about 26°C.
While these temperatures are typical, some days might be even hotter. Always be prepared for the unexpected spikes in warmth. Dressing in lightweight and breathable outfits will help you stay cool. Don't forget to stay hydrated and wear sun protection to handle the heat better.
Florida Keys in September usually receives heavy rainfall, averaging around 191 mm (show in inches) for the month. This month marks the year's heaviest rainfall, with frequent intense showers. It's advisable to be prepared with appropriate rain gear to stay dry. Based on our climate data of the past 30 years, about 22 days of rain are anticipated.
The city usually sees around 270 hours of sunlight, indicating many sunny days.
If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Florida Keys. January, February, March, April, May, November and December typically offer the best weather. While September tends to showcase less optimal conditions.
For an in-depth look at the yearly weather and climate conditions, visit our specialized Florida Keys climate page with graphs.
Florida Keys, monthly averages in September
Min Temperature
25.6°C
Max Temperature
31°C
Chance of Rain
72%
Precipitation
191 mm
Rainy days
22 days
Humidity
76%
Sunshine
270 hours
Percentage Sunshine
73%
Where to go in the United States of America in September
Find out more about the weather in the United States of America in September and which places have the best weather conditions in this month.
perfect weather
pleasant
tolerable
unpleasant
poor
So, what should you wear in Florida Keys in September?
It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool. However, there's a good chance of rain, so bring a raincoat just in case. What To Do
We rated the following activities from 1 (least suitable) to 10 (best) to do in September.
Interested in more climate information?
Weather and Climate provides you with all the information you need about the climate in Florida Keys.
Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.