Miami-Dade County·Miami Beach Area·Atlantic Coast
Is it safe to swim at Matheson Hammock Beach today?
Nearby-station reading — not collected at Matheson Hammock Beach.
The badge, reading, and history below come from KEY BISCAYNE BEACH, about 7.0 miles away. Use this as local context and check official conditions for Matheson Hammock Beach before swimming.
Latest nearby-station DOH sample is GOOD
The latest Florida DOH sample at KEY BISCAYNE BEACH, about 7.0 miles from Matheson Hammock Beach, measured 34 CFU/100mL in the good range. Use it as nearby context, not as a sample collected at Matheson Hammock Beach.
Keep it handy on this device for your next conditions check.
Latest sample on page · nearby station
Wednesday, September 9, 2026
This sample comes from KEY BISCAYNE BEACH, about 7.0 miles from Matheson Hammock Beach.
Bacteria reading
34 CFU/100mL
This reading belongs to KEY BISCAYNE BEACH. Florida DOH classifies results above 70 CFU/100mL as poor. Lower is better.
Nearby-station context
0% poor results
Use the current sample first, then use up to 12 latest displayed samples as context.
This page helps you make a better beach decision, not just read a badge. If it has rained heavily since Wednesday, September 9, 2026, lean conservative even though the latest sample is in the good range.
Start with the sample date
The number on this page is only as fresh as the last sample. If the date feels old for your trip, be more skeptical.
Use history as a tie-breaker
Two beaches can both look good today, but the one with fewer past spikes is usually the safer bet on an uncertain weather day.
Rain beats the badge
Stormwater runoff can change conditions faster than Florida's routine testing schedule, especially near inlets, canals, and urban drains.
Matheson Hammock Beach beach conditions and water quality today
If you searched for Matheson Hammock Beach water quality or beach conditions today, the latest Florida DOH sample shown here comes from KEY BISCAYNE BEACH, about 7.0 miles away. That station measured 34 CFU/100mL on Wednesday, September 9, 2026, which this site classifies as GOOD; it was not collected at Matheson Hammock Beach.
Latest sample on this page: Wednesday, September 9, 2026
This sample is aligned with the freshest updates currently on this site.
How Matheson Hammock Beach compares nearby today
KEY BISCAYNE BEACH's nearby-station result used on the Matheson Hammock Beach page ranks first among 4 nearby page results by current status, recent poor-sample rate, and sample freshness. This is a proxy comparison, not an exact result collected at Matheson Hammock Beach.
If you still want a backup, compare South Beach next.
Compare Matheson Hammock Beach with South BeachYour best next step from this page
Compare South Beach next
South Beach is the clearest backup if you still want a second option before you drive.
Use Miami-Dade County as your local backup map
KEY BISCAYNE BEACH's nearby-station result used on the Matheson Hammock Beach page currently ranks first among monitored page results in Miami-Dade County by current status, recent poor-sample rate, and sample freshness. This comparison uses KEY BISCAYNE BEACH as a nearby proxy for Matheson Hammock Beach, not an exact-beach sample. Use the county page to compare the rest of the local beaches in one place.
Plan from Miami
If you are deciding from a city trip, the city guide makes it easier to compare distance, current status, and fallback options together.
Use the right page for the decision you're making
These deeper views help when you need more than the same-day badge.
Track record
Open Matheson Hammock Beach history
Use this when today's badge looks okay but you want to review whether KEY BISCAYNE BEACH used as context for Matheson Hammock Beach has been one of the steadier options.
Backup plan
Compare South Beach and other backups
Use this first if Matheson Hammock Beach gives you pause and you want the strongest nearby alternative ranked by current status, risk history, and distance.
Weather risk
Use the after-rain view for Matheson Hammock Beach
Use this when storms, runoff, canals, or brown water make the normal badge harder to trust.
Warning signs
Check recent spikes before you go
Use this when you want to confirm whether KEY BISCAYNE BEACH used as context for Matheson Hammock Beach has shown any recent non-good readings, not just the current badge.
Recent samples show a steadier option
KEY BISCAYNE BEACH used as context for Matheson Hammock Beach has a strong recent-sample track record in this dataset. That makes a dry-weather good sample more reassuring, but it still does not override recent rain, runoff, or brown water.
Most recent poor sample shown here: No poor samples are shown in the latest displayed samples on this page.
Freshest sample anywhere on this site: September 10, 2026
Sample source details
- Source station
- KEY BISCAYNE BEACH
- Station ID
- 73
- Distance from beach point
- About 7.0 miles
- Match method
- Nearby-station proxy
- Data source
- Florida DOH Healthy Beaches Program via Water Atlas API
This station was selected by proximity because the pipeline did not have a strong local name match. Its sample and history are nearby context, not measurements collected at Matheson Hammock Beach.
Water Quality History — Latest Samples
Sample source: KEY BISCAYNE BEACH (nearby station for Matheson Hammock Beach)
Values in CFU/100mL. Green = Good (≤35.4), Yellow = Moderate (35.5–70.4), Red = Poor (≥70.5)
If it rained recently, treat this page as stale faster
Florida DOH testing is routine, not continuous. Heavy rain can push bacteria higher through runoff before the next posted sample catches it. For Matheson Hammock Beach, wait at least 72 hours after heavy rain and be extra careful around inlets, canals, storm drains, or brown water. Read the rain guide.
About Matheson Hammock Beach
A unique man-made atoll pool on Biscayne Bay, this Coral Gables beach is perfect for families with calm, shallow water.
Where Matheson Hammock Beach sits in Miami-Dade County
KEY BISCAYNE BEACH's nearby-station result used on the Matheson Hammock Beach page currently ranks first among monitored page results in Miami-Dade County by current status, recent poor-sample rate, and sample freshness. This comparison uses KEY BISCAYNE BEACH as a nearby proxy for Matheson Hammock Beach, not an exact-beach sample.
Compare with Sunny Isles BeachWhere Matheson Hammock Beach sits in Miami Beach Area
KEY BISCAYNE BEACH's nearby-station result used on the Matheson Hammock Beach page currently ranks first among monitored page results in the Miami Beach Area group by current status, recent poor-sample rate, and sample freshness. This comparison uses KEY BISCAYNE BEACH as a nearby proxy for Matheson Hammock Beach, not an exact-beach sample.
Compare with Sunny Isles BeachKeep Exploring This Coastline
Use the county, regional, and city guide pages to compare more beaches before you commit to one stop.
Compare Nearby Beaches Before You Go
These nearby beaches are sorted by current status, historical spike rate, and sample recency so you can compare backup options before you drive.
Read Before You Go
Is It Safe to Swim After Rain?
Wait times, runoff risk, and when to skip the water
Understanding Advisories
What the badges, thresholds, and warnings really mean
Cleanest Beaches in Florida
Compare the lowest poor-sample shares in the displayed history
How Bacteria Testing Works
How sampling works and why “latest” is not the same as live
Flesh-Eating Bacteria & Vibrio
Why this enterococcus badge does not test for Vibrio
Disclaimer: Water quality data is sourced from the Florida Department of Health Healthy Beaches Program. Conditions can change rapidly. This website provides informational guidance only, not official real-time clearance — always check with Florida DOH for official beach conditions. Safe to Swim Florida is an independent project and is not affiliated with any government agency.