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Key Largo weather in September (Florida, United States of America)

Planning a trip to Key Largo in September? Wondering if it's the right time to visit? Browse this page for a comprehensive overview of the weather conditions for that month.

In September, Key Largo generally has very high temperatures and heavy rainfall. Daytime temperatures hover around 31°C, while nights can cool down to about 26°C.

Keep in mind that while these are the average temperatures, there can be days that are even hotter. It's essential to be prepared for such heat. Wearing light, breathable fabrics and protecting yourself from the sun's intensity with hats or shades can make a difference. Hydration is key, so remember to drink plenty of water, especially if you find yourself outdoors for extended periods.

Key Largo in September usually receives heavy rainfall, averaging around 191 mm for the month. It records the year's peak rainfall, often coming down quite heavily. We recommend bringing a poncho, which will keep you dry. When we look at the climate data from the last 30 years, we can expect around 22 days of rain.

With around 270 hours of sunshine, the days are mostly sunny. It gives a pleasant and vibrant feel to the area.

If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Key Largo. January, February, March, April, May, November and December typically offer the best circumstances. While September tends to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Key Largo climate page with graphs.

 

Key Largo, monthly averages in September

Min TemperatureMin Temperature 26°C  
Max TemperatureMax Temperature 31°C  
Chance of RainChance of Rain 72%  
PrecipitationPrecipitation 191 mm  
Rainy daysRainy days 22 days  
HumidityHumidity 76% *  
SunshineSunshine 270 hours *  
Percentage SunshinePercentage 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.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in Key Largo 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.

Swimming
8/10
Cycling
7/10
Walking
7/10
Camping
7/10
Outdoor sports
7/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Key Largo.

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.