Weather in Florida Keys and Marathon

Weather in Florida Keys and Marathon

Florida Keys Weather

Sunny Weather in the Florida Keys Bahia Honda State Park Beach

Marathon and the other Florida Keys boast some of the year-round weather in the country. The location near the Gulf of Mexico and Gulf Stream creates pleasant temperatures ranging from the mid-60s to the low-90s and temperatures seldom differ by more than ten degrees from day to night or summer to winter.

Marathon, FL Weather Forecast

Seasonal Temperatures in Marathon, FL

Come and enjoy the Florida sunshine in the Keys! With great weather all year round, late summer and fall tend to be the most unpredictable in terms of tropical storms and hurricanes. Be sure you plan accordingly for your upcoming trip to the Gulf of Mexico. Use our seasonal weather chart and guide to plan when to visit the Florida Keys for your next vacation!

  Shea Creme (4 fl oz) | Sunny Days
Average High767880848789919189868178
Average Low656769737779808079777268

When is the Best Time to Visit the Florida Keys?


Springtime visitors can enjoy pleasantly warm temperatures in Marathon and the Keys. Florida Keys Spring Break can be a fun time to visit as well, with fun events like the popular Original Marathon Seafood Festival. For the anglers, the Marathon Offshore Bull and Cow Dolphin Tournament and Tarponian Tournament are fun Marathon, FL events to attend in May. Highs in the Florida Keys range from the low to high 80s, with lows in the 70s during these months.


Summertime Florida Keys temperatures are a bit warmer than spring, but not too hot. With highs in the high-80s to low-90s and lows right around 80 degrees, summer is a great season to be in the Keys! Cool off at your resort pool or spend the day out snorkeling or on a fishing charter with impressive tropical fish. August marks the beginning of the Florida Keys lobster season, with a mini in July.

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Visiting the Florida Keys in the Fall can be a hidden gem. With fewer crowds and lower prices for lodging, the “off-season” can be a great time to get away. Fantasy Fest brings many travelers to enjoy fun and celebrations in Key West. Enjoy a relaxing stay in Marathon away from the crowds and head to Key West for a day trip to see the festivities.


Winter is a popular season in the Florida Keys. With daily highs in the mid-70s to low-80s and lows about 10 degrees lower, winter can be one of the most enjoyable seasons in the Florida Keys. December through February offers some fantastic Florida Keys winter fishing. Book a fishing charter and fish for winter redfish, Spanish mackerel and other tropical fish. For those looking for fun Florida Keys events in the winter, plan a visit to Marathon, FL for the Conch Records Music Video Fest or Florida Keys Celtic Festival in January.

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beachfront vacation rentals Marathon FLBook Your Florida Keys Vacation Rental in Marathon, FL

No matter which season you choose to visit, Marathon Florida offers pleasant warm temperatures, picturesque beaches and great locations for some R&R. Enjoy spectacular deep-sea fishing, snorkeling and scuba diving year-round, too! Browse our great selection of Florida Keys vacation rentals near Marathon, FL and book your stay today.

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