Sarasota County·Sarasota / Bradenton·Gulf Coast
Should you swim at Siesta Key Beach after rain?
This page is built for the day when a beach looks tempting but recent rain makes the normal badge harder to trust.
Current picture
MODERATE on the latest sample at 52 CFU/100mL.
Recent-sample context
1 poor samples and 2 non-good samples in the displayed history.
Rain still matters
Stormwater can make this page stale faster than the normal testing schedule, especially after heavy rain.
Wait window
72 hours
Use that as the default buffer after heavy rain before trusting routine samples too much.
Latest poor sample
August 10, 2026
A recent poor sample is a stronger reason to be conservative after runoff.
Displayed-sample spike risk
8%
Lower is better when weather makes your same-day decision harder.
Lower-Risk Nearby Options After Rain
Rain guide →Fort De Soto Park Beach
Pinellas County · Gulf Coast · 27 mi away
No poor samples in the displayed history · risk 0%
Nokomis Beach
Sarasota County · Gulf Coast · 12 mi away
No poor samples in the displayed history · risk 0%
Coquina Beach
Manatee County · Gulf Coast · 16 mi away
No poor samples in the displayed history · risk 0%
Holmes Beach
Manatee County · Gulf Coast · 18 mi away
Nearby-station context from MANATEE PUBLIC BEACH NORTH, about 0.3 mi away; not an exact-beach sample.
Nearby-station data · No poor samples in the displayed history · risk 0%
Anna Maria Island Beach
Manatee County · Gulf Coast · 21 mi away
Nearby-station context from BAYFRONT PARK NORTH, about 0.4 mi away; not an exact-beach sample.
Nearby-station data · No poor samples in the displayed history · risk 0%
Turtle Beach
Sarasota County · Gulf Coast · 4 mi away
Last poor sample Jul 20 · risk 8%
Water Quality History — Latest Samples
Sample source: Siesta Key Beach
Values in CFU/100mL. Green = Good (≤35.4), Yellow = Moderate (35.5–70.4), Red = Poor (≥70.5)
Recent Warning-Sign Samples
Full history →September 8, 2026
52 CFU/100mL · MODERATE
August 10, 2026
169 CFU/100mL · POOR
Keep Exploring Nearby
How To Use This Page
This page is built for the day when a beach looks tempting but recent rain makes the normal badge harder to trust.
Use this view as a decision aid, not a guarantee. The latest sample, visible runoff, and recent weather still matter more than any single list or chart.
If you want the main same-day answer instead, go back to the Siesta Key Beach beach page.
Data from FL DOH Healthy Beaches Program. This is an independent project, not official real-time clearance — check with Florida DOH for official conditions.