How warm is Florida Keys in March?

Typical highs are about 77°F and the sea is about 77°F. Most swimmers find it comfortable.

Is March hurricane season in Florida Keys?

No. Storm risk is very low in March.

How crowded is Florida Keys in March?

Typically packed, around College & school spring break and Semana Santa / Easter. The quietest months are usually September and October.

Florida Keys in March

March is a good month for Florida Keys: a typical day grades A-, the 4th best of the 12 months. Expect highs near 77°F, water around 77°F and about a 23% chance of rain on a given day. Beaches are typically packed (College & school spring break and Semana Santa / Easter).

Typical dayA-4th of 12 months

Highs / water77°FSea 77°F

Rain chance23%on a given day

Waves3.1 fttypical

CrowdsPackedCollege & school spring break

Storm riskVery lowoutside storm season

Florida Keys month by month

Typical grade and high for each month. Higher is better: A+ to F.

February: A- · March: A- · April: A-. The best months are usually April, May and November, and the weakest are January and September.

Best beaches in Florida Keys in March

Resorts with the best typical March, and their grades for the next few days.

Beach	Typical Mar	This week
Ocean Reef Club	A-	SatB+SunA-MonA-TueA-WedA-
Hawks Cay Resort	A-	SatA-SunA-MonA-TueAWedA
Baker's Cay Resort Key Largo	A-	SatA-SunA-MonATueAWedA-
Playa Largo Resort & Spa	A-	SatA-SunA-MonATueAWedA-
Islander Resort	A-	SatB+SunA-MonA-TueA-WedA-
Cheeca Lodge & Spa	A-	SatB+SunA-MonA-TueA-WedA-
Casa Morada	A-	SatA-SunA-MonA-TueAWedA-
The Moorings Village	A-	SatB+SunA-MonA-TueA-WedA-

Grades for the next few days from Veabird's beach forecast, updated Oct 3, 18:00 UTC. Higher is better: A+ to F.

Better beach options in March

Further afield: Huatulco (A) and the Yucatán Gulf Coast (A). Every destination in March.

Questions

Is March a good time to visit Florida Keys?: March is a good month for Florida Keys: a typical day grades A-, the 4th best of the 12 months. Expect highs near 77°F, water around 77°F and about a 23% chance of rain on a given day. Beaches are typically packed (College & school spring break and Semana Santa / Easter).
How warm is Florida Keys in March?: Typical highs are about 77°F and the sea is about 77°F. Most swimmers find it comfortable.
Is March hurricane season in Florida Keys?: No. Storm risk is very low in March.
How crowded is Florida Keys in March?: Typically packed, around College & school spring break and Semana Santa / Easter. The quietest months are usually September and October.

Plan it

Florida Keys: this week's forecast, beach by beach
Sargassum Report: this week, updated every Monday
Compare dates and beaches on the map

Typical-month numbers from Veabird's year-ahead outlook for the 17 resorts here (median resort): 6 years of ERA5 climate normals, the seasonal pattern of the Atlantic sargassum belt, holiday crowd calendars and historical storm tracks. Any given year can differ; check the 16-day forecast before you go.