St. Johns County·Northeast Florida·Atlantic Coast
Is it safe to swim at Crescent Beach today?
Latest DOH sample is GOOD
The latest Florida DOH sample at Crescent Beach measured 16 CFU/100mL, which is in the good range. That is a positive sign, but it is still a sample from Wednesday, September 9, 2026 rather than a live reading.
Keep it handy on this device for your next conditions check.
Latest sample on page
Wednesday, September 9, 2026
This is the latest DOH beach-water sample we found for Crescent Beach.
Bacteria reading
16 CFU/100mL
Florida DOH classifies results above 70 CFU/100mL as poor. Lower is better.
Recent-sample 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.
Crescent Beach beach conditions and water quality today
If you searched for Crescent Beach water quality or beach conditions today, the latest Florida DOH sample shown on this page is 16 CFU/100mL from Wednesday, September 9, 2026. This site currently classifies that sample as GOOD.
Latest sample on this page: Wednesday, September 9, 2026
This sample is aligned with the freshest updates currently on this site.
How Crescent Beach compares nearby today
Crescent Beach currently ranks as the strongest monitored option among 4 nearby beaches on this page based on current status, recent poor-sample rate, and sample freshness.
If you still want a backup, compare Atlantic Beach next.
Compare Crescent Beach with Atlantic BeachYour best next step from this page
Compare Atlantic Beach next
Atlantic Beach is the clearest backup if you still want a second option before you drive.
Use St. Johns County as your local backup map
Crescent Beach currently ranks first among monitored page results in St. Johns County by current status, recent poor-sample rate, and sample freshness. Use the county page to compare the rest of the local beaches in one place.
Plan from Jacksonville
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 Crescent Beach history
Use this when today's badge looks okay but you want to review whether Crescent Beach has been one of the steadier options.
Backup plan
Compare Atlantic Beach and other backups
Use this first if Crescent 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 Crescent 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 Crescent Beach has shown any recent non-good readings, not just the current badge.
Recent samples show a steadier option
Crescent 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
- CRESCENT BEACH
- Station ID
- 241
- Distance from beach point
- About 0.6 miles
- Match method
- Name and location match
- Data source
- Florida DOH Healthy Beaches Program via Water Atlas API
Monitoring station names can differ from beach signs or local nicknames. Use this source detail when you want to match the page back to the underlying Florida DOH sample record.
Water Quality History — Latest Samples
Sample source: Crescent 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 Crescent 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 Crescent Beach
A peaceful residential beach south of St. Augustine with wide, uncrowded sand, good fishing, and access to Fort Matanzas National Monument.
Where Crescent Beach sits in St. Johns County
Crescent Beach currently ranks first among monitored page results in St. Johns County by current status, recent poor-sample rate, and sample freshness.
Compare with St. Augustine BeachWhere Crescent Beach sits in Northeast Florida
Crescent Beach currently ranks first among monitored page results in the Northeast Florida group by current status, recent poor-sample rate, and sample freshness.
Compare with St. Augustine 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.
Atlantic Beach
Duval County · Tested Jul 27, 2026
Jacksonville Beach
Duval County · Nearby station tested Jul 27, 2026
Nearby-station context from BEACH BLVD ACCESS, about 0.4 mi away; not an exact-beach sample.
Neptune Beach
Duval County · Nearby station tested Jul 27, 2026
Nearby-station context from HOPKINS ST ACCESS, about 0.3 mi away; not an exact-beach sample.
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.