JW Marriott Marco Island beach forecast: weather, water & waves
Marco Island, FL · Southwest Florida, United States · 25.936, -81.729
Updated : low seaweed, beach grade A-, sea 81°F.
Also listed as JW Marriott Marco Island Beach Resort.
Veabird's call
Go Sunday with A- skies, very low seaweed and 78F air.
Take an Everglades airboat tour from Everglades City if Tuesday turns breezy.
Grades from Veabird's beach forecast; wording by AI (Muse Spark), checked against the forecast. Updated Nov 13, 01:00 UTC.
Tell me when JW Marriott Marco Island grades A
One email when the beach grades A, at most once a week per beach. We only ask for your email address, and every email has a one-click unsubscribe.
We email you a link to confirm first. Privacy
Plan your trip
Where to stay nearby
Partner links: Veabird may earn a commission at no cost to you. Partners never affect forecasts or scores.
Questions about JW Marriott Marco Island
Does Marco Island get sargassum (seaweed)?
Rarely. Veabird estimates moderate or heavier seaweed on the beach at JW Marriott Marco Island in fewer than one week in ten in every month. Landings vary by year, wind and currents.
How warm is the water at JW Marriott Marco Island?
About 76°F in November. The sea is warmest in August (about 89°F) and coolest in January and February (about 67°F).
When is the best time to visit JW Marriott Marco Island?
For warm water and less rain, aim for May, September and October. September is usually the quietest of those, with about 23 rainy days and a sea near 87°F.
When is hurricane season at JW Marriott Marco Island, and how often do storms hit?
The Atlantic hurricane season runs June through November and peaks around September. A tropical storm passed within 86 miles of JW Marriott Marco Island in 18 of the 55 seasons from 1971 to 2025, and a hurricane within 58 miles in 5. The riskiest stretch is around August 27, when the chance of a storm passing in any one week is about 3%; across all of September it is about 10%. Flexible bookings and travel insurance help in the peak weeks.
What guests say about JW Marriott Marco Island Beach Resort
Guests like Beautiful location · Friendly staff
Watch for Poor housekeeping · Inconsistent service
- Cleanliness
7.8 - Service
8.8 - Location
9.8 - Room Quality
8.8 - Amenities
9.8 - Value for Money
9.3 - Food and Beverage
8.8 - Overall Experience
8.8
Read all 663 reviews · Compare on Expedia
Scores and reviews come from guests who stayed, through LiteAPI (Nuitée). The likes, watch-fors and category scores are an AI summary of those reviews. Partner links: Veabird may earn a commission.
Sargassum season at JW Marriott Marco Island
Sargassum is rare at JW Marriott Marco Island: Veabird estimates moderate or heavier seaweed on the beach in fewer than one week in ten in every month.
Estimated share of weeks in each month with moderate or heavier seaweed on the beach. Veabird takes the landing season seen on Quintana Roo's beaches (a Puerto Morelos beach camera, 2015–2020, and the Mexican Navy's beach alerts, 2022–2026), the nearest coast with a multi-year beach record (this one has none), and scales it by how often NOAA AOML satellites see notable seaweed within about 20 km of this stretch of coast: 6% of weeks here on average, against 54% off Quintana Roo, so 11% of that season. The satellite share (2016–2024, the top fifth of all coast-weeks, adjusted for this beach's exposure of 30%) measures seaweed offshore, not on the sand: off the Riviera Maya it reads high even in winter, when little lands. Very low under 10%, Low 10–24%, Moderate 25–44%, High 45–69%, Very high 70%+. Beach faces 245°; onshore winds from that direction push seaweed ashore. Satellite sargassum data: USF Optical Oceanography Lab (Sargassum Watch System) via NOAA AOML. The satellite record as open data.
Southwest Florida month by month
Typical weather, water temperature, seaweed and crowds for every month: the best time to visit Southwest Florida.
- Southwest Florida in January
- Southwest Florida in February
- Southwest Florida in March
- Southwest Florida in April
- Southwest Florida in May
- Southwest Florida in June
- Southwest Florida in July
- Southwest Florida in August
- Southwest Florida in September
- Southwest Florida in October
- Southwest Florida in November
- Southwest Florida in December
Weather, water & seaweed by month at JW Marriott Marco Island
Average highs run from about 73°F in January to 89°F in July and August. The sea is warmest in August (about 89°F) and coolest in January and February (about 67°F). December is usually the driest, with about 5 rainy days; August is the wettest, with about 26 rainy days.
| Month | Avg high | Sea | Rainy days | Sargassum |
|---|---|---|---|---|
| Jan | 73°F | 67°F | 8 | Very low |
| Feb | 76°F | 67°F | 6 | Very low |
| Mar | 80°F | 74°F | 9 | Very low |
| Apr | 83°F | 77°F | 10 | Very low |
| May | 87°F | 84°F | 14 | Very low |
| Jun | 87°F | 87°F | 24 | Very low |
| Jul | 89°F | 88°F | 24 | Very low |
| Aug | 89°F | 89°F | 26 | Very low |
| Sep | 87°F | 87°F | 23 | Very low |
| Oct | 85°F | 82°F | 15 | Very low |
| Nov | 80°F | 76°F | 8 | Very low |
| Dec | 76°F | 70°F | 5 | Very low |
Monthly averages from 6 years of ERA5 reanalysis (Open-Meteo) for this area's 0.5° grid cell; rainy days have at least 1 mm (0.04 in). Sargassum is the typical-year estimate described above. Any given year can differ.
Cleanup & barriers
- Offshore barriers
- None deployed offshore.
- Public cleanup
- County beach raking/hand removal when landings exceed thresholds (Collier, Lee, Sarasota).
- Resort crews
- Resort grounds crews rake daily in season.
- Typical clearing time
- same-day to 2 days
Safety notes
US domestic
- Red tide (Karenia brevis) episodes most common late summer–winter; check FWC red tide map.
- Stingray shuffle in shallow water May–Oct.
Check official advisories and local flags before swimming. Decomposing sargassum releases hydrogen sulfide; avoid heavy piles.
Things to do near Marco Island, FL
- Naples Pier & Fifth Avenue South
- Sanibel shelling & J.N. 'Ding' Darling NWR
- Everglades airboat tours from Everglades City
- 10,000 Islands kayaking
Fly in for the best beach days
Suggested dates are a week in December. Change them to match the live forecast above.
Opens a flight search in a new tab. Partner link: Veabird may earn a commission.
Nearest airports
- Southwest Florida Intl (Fort Myers) (RSW), ~67 km
- Naples Airport (APF), ~24 km
Nearby resorts
- Marco Beach Ocean Resort Marco Island, FL · 0 km
- Hilton Marco Island Beach Resort Marco Island, FL · 1 km
- Marco Beach Vacation Suites Marco Island, FL · 2 km
- Edgewater Beach Hotel Naples, FL · 28 km
- Naples Grande Beach Resort Naples, FL · 32 km
- The Ritz-Carlton Naples Naples, FL · 35 km
Embed this forecast
Hotels and travel sites can show live conditions for JW Marriott Marco Island for free. Get the widget · Data & API