Whats The Best Time To Visit Marathon, Florida?

Marathon Florida is a 10-mile-long family-friendly island community amid the Florida Keys island chain. The area is noted for its boating and fishing culture, including deep-sea, reef, and flats fishing.

Marathon's islands are a picturesque panorama of gorgeous white sand beaches, including beautiful Sombrero Beach, crystal-clear oceans, and colorful coral reefs. Stingrays, dolphins, and sea turtles are just some of the marine life that visitors to Marathon can encounter.


Visiting Marathon Florida is ideal any time of year, with average highs of 84 degrees Fahrenheit (28.8 degrees Celsius) and average lows of 66 degrees Fahrenheit (18.8 degrees Celsius). Additionally, there are 186.2 rainfall days every year, on average, totaling 24.45" (621mm) of precipitation.

Year-Round Activities in Marathon Florida

Because most of the attractions are outside, packing for a vacation to Marathon Florida is relatively simple. From scuba diving, snorkeling, kayaking, relaxing on the beach, trying a new watersport, or working on your tan, you'll want to pack a bathing suit.

Then, of course, you'll need casual resort attire for dining out and roaming the streets in the evening. The dress code is cool, relaxed, and comfortable in much of the Florida Keys, including Marathon.

Take in the Nature Center at Crane Point Hammock located at 5550 Overseas Highway during a rainy day and board a private fishing charter on a clearer day. Or, spend the day at Curry Hammock State Park, where swimming, kayaking, fishing, and other recreational activities are available year-round. The possibilities are endless!

Road Trip or Fly the Friendly Skies to Marathon Florida

Whether you're taking a day trip from Miami, eager to drive over the famed seven-mile bridge, or flying into Florida Keys Marathon International Airport for a much-needed getaway, spectacular ocean views are everywhere!

From the Gulf of Mexico to the Atlantic Ocean, from Key West to Islamorada to Key Largo, savor the scenery of the Florida Keys. Additionally, there are some excellent vacation rentals at reasonable pricing, not to mention the best hotels.

Below, we've got your travel guide for Marathon, Florida's average temperatures and the average number of rainfall days by season and month so you can decide when the best time to visit Marathon Florida, is right for you and your family.

Winter in Marathon Florida Keys

The Florida Keys have some of the most fantastic weather beginning in December each year, but winter in Marathon is the driest and coldest. Winter is still a great season to enjoy the warm sandy beaches and swimmable water temperatures, with an average of roughly 2" of rainfall per month.
Winter is, however, the peak tourist season in the Florida Keys, so expect higher hotel and flight charges, as well as the need to make reservations in advance at most of the city's restaurants.

December

Average temperatures range from 68°F (20°C) to 78°F (25.5°C).
The average ocean water temperature is 76.6°F (24.3°C).
It rains for 12.5 days on average.

January

The coldest month sees average temperatures range from 63°F (17.2°C) to 74°F (23.3°C).
The average ocean water temperature is 72.3°F (22.4°C).
It rains for 10.5 days on average.

February

Average temperatures range from 65°F (18.3°C) to 76°F (24.4°C).
The average ocean water temperature is 72.1°F (22.3°C)
It rains for 10.3 days on average.

Spring in Marathon Florida Keys

The best time to visit Marathon Florida is in the spring when temperatures increase to a comfortable 78 degrees Fahrenheit (25.5 degrees Celsius). Crowds thin down after the winter season, though the month of March is the busiest for tourism.

Although spring is wetter than winter, the rainy season doesn't truly begin until the end of May, which gets about 3.35" of rain compared to 2.4" in March. So you'll have lots of opportunities to cool off in the warm ocean waters.

March

Average temperatures range from 68°F (20°C) to 79°F (26.1°C).
The average ocean water temperature is 74.3°F (23.5°C).
It rains for 10.8 days on average.

April

Average temperatures range from 72°F (22.2°C) to 82°F (27.7°C).
The average ocean water temperature is 78.1°F (25.6°C).
It rains for 11.8 days on average.

May

Average temperatures range from 75°F (23.8°C) to 85°F (29.4°C).
The average ocean water temperature is 81°F (27.2°C).
It rains for 15.4 days on average.

Summer in Marathon Florida Keys

Summer is the hottest season, with average high temperatures of 91 degrees Fahrenheit (32.7 degrees Celsius) in July and August. Humidity is also relatively high during these months.


The Atlantic Hurricane Season begins in June when the region receives most of its rainfall. Fortunately, June and July are drier than August and early September, so you should have plenty of sunny days to enjoy the summer in Marathon Florida.

June

Average temperatures range from 75°F (23.8°C) to 84°F (28.8°C).
The average ocean water temperature is 83.7°F (28.7°C).
It rains for 19.7 days on average.

July

Average temperatures range from 76°F (24.4°C) to 93°F (33.8°C).
The average ocean water temperature is 85.6°F (29.8°C).
It rains for 20.1 days on average.

August

Average temperatures range from 81°F (27.2°C) to 93°F (29.7°C).
The average ocean water temperature is 86.7°F (30.4°C).
It rains for 21 days on average.

Fall in Marathon Florida Keys

As fall approaches, the rainy season in the region becomes even more intense. While September is the wettest month of the year, with about 8" of rain falling over the course of the month, October isn't far behind.
However, later in the fall, you can expect fewer storms and colder weather, making it a perfect time to visit. In reality, November only sees around seven days and a little under 3" of rain. Furthermore, Marathon is unlikely to attract tourists in November. Those willing to go during this time will likely find it the most affordable, least crowded month.

September

Average temperatures range from 78°F (25.5°C) to 88°F (31.1°C).
The average ocean water temperature is 85.6°F (29.8°C).
It rains for 23 days on average.

October

Average temperatures range from 77°F (25°C) to 86°F (30°C).
The average ocean water temperature is 82.8°F (28.2°C).
It rains for 18.5 days on average.

November

Average temperatures range from 72°F (22.2°C) to 81°F (27.2°C).
The average ocean water temperature is 79.2°F (26.2°C).
It rains for 18.5 days on average.