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Up to $250 for Dining
SALE: Up to $250 for Dining

Enjoy a $50/night dining credit, select dates and room types. Learn More

The Beach is on Sale: Save 15%
Beach is on Sale

Save up to 15% on beachfront beach houses, select dates. Learn More

Stay 5 Nights and Save More
Stay 5 Nights and Save More!

Stay longer and save at Tranquility Bay! Call 877-741-7839. Book Now

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Online Planning Guide

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Visiting Marathon in May

May Florida Keys Travel Tips, Weather, Events and Deals

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May in Marathon

Make way for Mother's Day and Memorial Day in May! Pamper mom with a relaxing Mother's Day Florida Keys vacation, or for Memorial Day you can dive into an exciting long weekend with amazing onsite watersports adventures. May is the perfect month to soak up the Florida sunshine before the island heats up for summer. Families or friends traveling together can discover our spacious two and three-bedroom Florida Keys beach houses, while couples love a romantic retreat in our more intimate Tropical Garden Guestrooms.

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Marathon Weather in May

The island starts to warm up in May with an average high temperature of 85° F. At the peak of summer, the average high is 89° F. Even when temperatures are high, Marathon is fortunate not to have any super-highways or urban sprawl to radiate the sun's heat. Not only that, but our islands are surrounded by cooling ocean waters. By late May, the season's first thundershowers start popping up. Rarely do the storms stick around long enough to spoil an entire day.

Average High Air Temp

Average Low Air Temp

Average Water Temp

Average Rainfall

Average Sunset Time

85° F (29° C) 76° F (24° C) 83° F (28° C) 3.5 inches (8.9cm) 7:58 p.m.

What to Wear in May

Pack your summer gear, including flip flops, a swim suit, shorts and a light shirt, but it's always wise to bring light layers that you can add to your wardrobe when needed. If you go boating for example, bring a light jacket. May can see high temperatures so make sure to bring light, cool clothing for daytime activities. Don't forget your sunglasses, aloe, sun screen and a hat to protect you against UV rays. Take bottled water with you to the beach and for other daytime activities.

Major May Events and Holidays

In May, enjoy a long weekend for Memorial Day or join us for a Mother's Day escape. 

May Federal Holidays and Important Travel Dates in 2017

  • May 14: Mother's Day (USA)
  • May 29: Memorial Day

Top Marathon and Nearby Florida Keys Events in May

Book Now: May Packages and Offers in Marathon

  • Stay 5 Nights and Save More: Let us reward you for staying just a little longer in paradise! Enjoy special rates for staying at least five nights at our beachfront resort.
  • Book in Advance and Save: The earlier you book, the more you save at Tranquility Bay with our advance purchase offer. Book up to seven days in advance and save.
  • Florida Resident Savings: Florida residents can save more with great rates for in-state visitors at Tranquility Bay Resort.
  • AAA Member Discounts: Visiting the Florida Keys has never been easier! Enjoy our exclusive AAA discount and escape to paradise for less.

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