Casa Morada beach & sargassum forecast
Islamorada, FL · Florida Keys, United States · 24.923, -80.628
Updated : low seaweed, beach grade A, sea 82°F.
Veabird's call
Head out Thursday for grade A, calm 1.4 ft waves and 14% rain.
April and May grade A- on this northwest-facing beach in Islamorada.
Grades from Veabird's beach forecast; wording by AI (Muse Spark), checked against the forecast. Updated Nov 12, 18:00 UTC.
Tell me when Casa Morada is clear
One email when the seaweed clears or 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.
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Where to stay nearby
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Questions about Casa Morada
Does Casa Morada get sargassum (seaweed)?
Rarely. Veabird estimates moderate or heavier seaweed on the beach here in fewer than one week in ten in every month. Landings vary by year, wind and currents.
How warm is the water at Casa Morada?
About 79°F in November. The sea is warmest in August and September (about 88°F) and coolest in January and February (about 72°F).
When is the best time to visit Casa Morada?
For warm water and dry weather, aim for April. April brings about 8 rainy days and a sea near 78°F.
When is hurricane season at Casa Morada, 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 Casa Morada in 15 of the 55 seasons from 1971 to 2025, and a hurricane within 58 miles in 4. 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 8%. Flexible bookings and travel insurance help in the peak weeks.
What guests say about Casa Morada
Guests like Rooms recently renovated / newly equipped · Rooms described as spacious and very clean · Staff pleasant and friendly · Access to bikes, kayaks and paddle boards
Watch for Property undergoing remodeling / unification with another hotel · Guests relocated to a different property without adequate advance notice · No beach access despite photos showing beachfront · Perceived poor value — paying resort prices for motel-level accommodation
- Cleanliness
9.5 - Service
9.4 - Location
8.4 - Room Quality
9.4 - Amenities
8.7 - Value for Money
6.0 - Food and Beverage
8.6 - Overall Experience
8.8
Read all 305 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 Casa Morada
Sargassum is rare at Casa Morada: 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: 2% of weeks here on average, against 54% off Quintana Roo, so 4% 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 315°; 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.
Florida Keys month by month
Typical weather, water temperature, seaweed and crowds for every month: the best time to visit Florida Keys.
Weather, water & seaweed by month at Casa Morada
Average highs run from about 73°F in January to 86°F in July, August and September. The sea is warmest in August and September (about 88°F) and coolest in January and February (about 72°F). February is usually the driest, with about 5 rainy days; September is the wettest, with about 22 rainy days.
| Month | Avg high | Sea | Rainy days | Sargassum |
|---|---|---|---|---|
| Jan | 73°F | 72°F | 8 | Very low |
| Feb | 74°F | 72°F | 5 | Very low |
| Mar | 76°F | 77°F | 8 | Very low |
| Apr | 78°F | 78°F | 8 | Very low |
| May | 82°F | 84°F | 12 | Very low |
| Jun | 84°F | 86°F | 18 | Very low |
| Jul | 86°F | 87°F | 18 | Very low |
| Aug | 86°F | 88°F | 18 | Very low |
| Sep | 86°F | 88°F | 22 | Very low |
| Oct | 83°F | 83°F | 17 | Very low |
| Nov | 79°F | 79°F | 10 | Very low |
| Dec | 76°F | 75°F | 8 | 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.
- Public cleanup
- Monroe County and City of Key West remove from public beaches; most Keys shores are rocky.
- Resort crews
- Resort crews clear private beaches daily.
- Typical clearing time
- same-day to 2 days
Safety notes
US domestic
- Boating and snorkel safety: currents in channels.
- Lionfish/fire coral contact hazards.
Check official advisories and local flags before swimming. Decomposing sargassum releases hydrogen sulfide; avoid heavy piles.
Things to do near Islamorada, FL
- Duval Street & Mallory Square sunset
- Dry Tortugas National Park
- Hemingway Home
- Snorkel reefs (Sand Key)
- John Pennekamp Coral Reef State Park (Key Largo)
- Bahia Honda State Park
Fly in for the best beach days
Suggested dates are a week in December. Change them to match the live forecast above.
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Nearest airports
- Miami Intl (MIA), ~103 km
- Florida Keys Marathon Intl (MTH), ~48 km
Nearby resorts
- Cheeca Lodge & Spa Islamorada, FL · 1 km
- Islander Resort Islamorada, FL · 1 km
- The Moorings Village Islamorada, FL · 1 km
- Playa Largo Resort & Spa Key Largo, FL · 31 km
- Hawks Cay Resort Duck Key, FL · 33 km
- Baker's Cay Resort Key Largo Key Largo, FL · 35 km
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