Crandon Park Beach, Key Biscayne
Shark Weather report · updated Sun Oct 18, 11:06 pm ET
Sunrise/sunset calculated for this beach’s location (NOAA solar equations, ±2 min). Tides: NOAA CO-OPS predictions, Miami Beach, Government Cut (8723178), 6 km away, feet above MLLW.
Surf/swim conditions only, never shark risk. How it's calculated
We have no approved official shark advisory or closure for this beach right now. Sharks live along this whole coast, so always check with lifeguards and posted signs.
No past official advisories on file for this beach yet. How this works
11 AM–2 PM · breezy (up to 24 mph), mid tide, rising
💨 Mid-window wind: Strong cross-onshore, 23 mph from NE: choppy, blown out
⚠ Rip Current Statement, High rip current risk (NWS) in effect: even the best window may be rough. Check the alerts above.
Daylight hours only (sunrise 7:21 am, sunset 6:49 pm). From the NWS hourly forecast (wind) and NOAA CO-OPS hourly tide predictions (Miami Beach, Government Cut, 6 km away). Surf/swim conditions only, not a safety rating. How it works
Active NWS alerts
⚠ Rip Current Statement
Rip Current Statement issued October 18 at 1:36AM EDT until October 22 at 8:00PM EDT by NWS Miami FL
Details from NWS
* WHAT...Dangerous rip currents expected. * WHERE...Coastal Palm Beach County, Coastal Broward County and Coastal Miami Dade County. * WHEN...From late tonight through Thursday evening. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water.
Source: NWS Miami FL · until Thu Oct 22, 8:00 pm ET
7-day outlook
Today Oct 18
Mon Oct 19
Tue Oct 20
Wed Oct 21
Thu Oct 22
Fri Oct 23
Sat Oct 24
Weather, wind and rain chance: National Weather Service (Tonight onward), updated Sun Oct 18, 4:47 pm ET. High / overnight low. “n/a” = NWS gave no rain chance. Waves: NWS surf zone forecast (Coastal Miami-Dade), issued Sun Oct 18, 4:37 pm ET; it only covers the next few days, so “—” means no official wave forecast.
Conditions
Waves
Significant wave height 1.6 m · dominant period 6 s · from 52° (NE)
Hollywood Beach buoy, 33 km away, as of 9:00 pm ET · NOAA NDBC · Data courtesy of CDIP (station 265). Buoys measure offshore; breaking surf at the beach can differ.
Surf zone forecastNWS
High Rip Current Risk In Effect Through Thursday Evening| Period | Rest Of Today |
| Surf height | 2 to 3 feet |
| Rip current risk | High |
| Water temp (NWS) | In the mid 80s |
| Remarks |
Coastal Miami-Dade · issued Sun Oct 18, 4:37 pm ET · NWS Surf Zone Forecast
Water temp
Wetsuit meter: today 85°F, swimsuit / boardshorts
Hollywood Beach buoy (CDIP 265), 33 km away, as of 9:00 pm ET · Data courtesy of CDIP. The wetsuit meter is a general comfort guide.
Weather & wind
Tonight: Chance Showers And Thunderstorms, 79°F, wind 29 mph NE
- Monday: Mostly Sunny, 84°
- Monday Night: Chance Showers And Thunderstorms, 77°
National Weather Service (MFL) forecast, updated Sun Oct 18, 4:47 pm ET
💨 Strong cross-onshore, 29 mph from NE: choppy, blown out (how)
Tides today
| Tide | Time (ET) | Height |
|---|---|---|
| High | 2:06 am | 2.4 ft |
| Low | 8:17 am | 1.0 ft |
| High | 2:56 pm | 2.5 ft |
| Low | 9:00 pm | 1.2 ft |
NOAA CO-OPS predictions, Miami Beach, Government Cut (8723178), 6 km away · feet above MLLW
Water quality
Official status: Florida Healthy Beaches (Florida Department of Health) · Florida Department of Health in Miami-Dade County
The state samples beach water for enterococci bacteria: Good 0–35, Moderate 36–70, Poor 71 or more per 100 mL. If a result is above 70 and a resample is too, the county issues an advisory for that site. We haven’t found an official machine-readable feed we’re allowed to reuse, so we link to the official results instead of showing a status.
Florida Department of Health, Healthy Beaches Program (checked 2026-10-18).
Lifeguards
Miami-Dade Fire Rescue, Ocean Rescue Bureau
Official site. Ask the nearest tower about conditions, rip currents and any wildlife sightings.
In an emergency call 911.
Beach warning flags
- Double red: Water is closed to the public.
- Red: High hazard: high surf and/or strong currents.
- Yellow: Medium hazard: moderate surf and/or currents.
- Green: Low hazard: calm conditions, exercise caution.
- Purple: Dangerous marine life spotted.
Florida uses one statewide set of beach warning flags (section 380.276, Florida Statutes). No flag flying does not mean the water is safe. Lifeguards post today’s flags at the beach.
Meanings: Volusia County Beach Safety. Program: Florida DEP Beach Warning Flag Program.
SwellNDBC
| Primary swell | NE 1.6 ft @ 10 s |
| Wind waves (secondary) | NE 4.9 ft @ 5.7 s |
This swell partly reaches here (by our estimated swell window)
Swell window for this beach (estimate)
Reaches well from: none · partly from: 20–70° (directions the swell comes from, degrees true). East-southeast-facing, sheltered by an offshore sandbar and the Bahamas; usually very small. Estimate only: bearings read from coastline orientation and generally known exposure, roughly ±15°, not surveyed.
Hollywood Beach buoy (41122), 33 km offshore, spectral summary as of 9:00 pm ET · NOAA NDBC · Data courtesy of CDIP (station 265). Height in feet (converted from meters), period in seconds, direction the waves come from.
Beach info
| Parking | Just under 3,000 spaces; $7 + tax Monday–Thursday, $10 + tax Friday–Sunday. |
| Lifeguards | Miami-Dade Ocean Rescue: professionally guarded 365 days a year, 8 am to 6 pm. |
| Good to know | The offshore sandbar changes constantly. |
| Beginners | Miami-Dade Parks: “Crandon’s famous offshore sandbar protects swimmers from a crashing surf.” |
From official pages: miamidade.gov · page 2. Checked 2026-10-18. Rules, fees and hours change; follow posted signs and lifeguards.
