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How is the Weather in Miami During September?

Updated: July 31, 2023

September in Miami has hot afternoons and warm nights with high humidity and frequent late day and evening showers and thunderstorms.  Late September sometimes can be slightly cooler and drier.


Daytime high temperatures will be mostly 90-91 F (32-33 C) early in the month, cooling slightly to 87-89 F (about 31 C) near the end of the month. 

On average, 12-15 days will record high temperatures at or above 90 F (32 C).  The record high temperature in Miami during September is 97 F (36.1 C).

Late night and early morning low temperatures tend to be near 76-77 F (24-25 C) with a few of the cooler mornings dipping down near 73 F (23 C), especially near the end of the month. 

The record low temperature in Miami during September is 68 F (20 C).

Rain or Shine

On average, you can expect 2 sunny days this month, 15 partly sunny and 12 cloudy days. Measurable rain falls on about 19 days with 6 of these recording 0.5 inches (12.7 mm) or more.


The number of daylight hours available this month falls from 12.6 hours on the 1st to 11.9 hours on the 30th.  


Wind speeds will mostly be light to gentle at 4-12 mph (6-19 kph) but can briefly be moderate at 13-18 mph (20-28 kph). 

Tropical Cyclones

September is the peak of the North Atlantic hurricane season and there is a 40% chance for a named tropical cyclone passing near the east coast of Florida or the Bahamas this month.

The risk for experiencing tropical storm strength winds in Miami during the entire hurricane season is about once every 3 years, and hurricane force winds, once every 8-10 years.


If you are headed to the beaches expect warm ocean temperatures around 84-85F (about 29 C).

What to Wear in Miami during September?

The weather is hot and humid with frequent showers so dress light and airy.

Bring your beach wear including a pair of casual flip flops, sunglasses, sunscreen and a good pair of walking shoes as well as an umbrella for those showers.

Things to Do in Miami in September

Provided that there aren't any tropical cyclones happening this month, it might still be a good time to consider a pay-what-you-wish Miami walking tour. If it is a bit windy, you might want to consider an indoor activity instead.

If you're looking for another alternative, consider going to a concert instead. Here are some of the best musical performers scheduled to visit Miami in September:

Alternatively, you may also want to go see Kevin Hart when he comes to town on September 17th.

The Miami Marlins will also be nearing the end of their season in September, and there should be plenty of opportunities to see them play this month.

Seasonal Outlook

July to September 2022 Miami

There is an 87% chance for normal to above normal temperatures with near normal rainfall

Fred Pickhardt

Ocean Weather Services

About The Author

Fred Pickhardt

Fred is a marine meteorologist and sailed briefly with American Export Lines in the Far East trade. He has extensive experience in weather analysis, weather forecasting, and forensic weather event reconstructions. Fred founded Ocean Weather Services and currently provides forensic marine weather reports to the maritime industry.
Updated: July 31st, 2023
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