Beach-Day Checkpoint

Marco Island Red Tide Status

This is the fast-read checkpoint before you load the cooler, haul the chairs, and head for the beach. Start with the official Southwest Florida summary, then verify on the FWC maps before you go.

No red tide observed in the Southwest Florida summary

In Southwest Florida over the past week, K. brevis was not observed. For additional information, view the Southwest Coast report and map .

Beach plans are easier to keep when Southwest Florida reports say red tide was not observed, but the daily sampling map is still the last check before you go.

FWC report date

March 13, 2026

Next scheduled update: Friday, March 20

Statewide summary

Over the past week, the red tide organism, Karenia brevis , was observed in nine samples from Northwest Florida and one sample from Florida’s East Coast. Bloom concentrations (>100,000 cells/liter) were not observed. We continue to use satellite imagery (USF and NOAA NCCOS) to help track nearshore and offshore conditions.

Short-term forecast

Short-term (3.5 day) forecasts provided by the USF-FWC Collaboration for Prediction of Red Tides predict western to northwestern movement of surface waters and variable subsurface transport from Bay County to Wakulla County. Between Jefferson County and northern Monroe County, northwestern surface movement and minimal subsurface transport are predicted.

Before you commit to the beach

Treat the Southwest Florida summary as your first filter, not your only one. If the day still looks promising, check the daily sampling map before you leave because conditions can shift between the bigger scheduled reports.

Is this red tide status page using an official source?

Yes. It is built from the public Florida Fish and Wildlife Conservation Commission status page, and every key section links back to the official report or map.

What should I check right before going to the beach?

Check the daily sampling map last. It is the fastest way to see whether the broader weekly summary still lines up with what is happening right now.

Does no observation in Southwest Florida guarantee a perfect beach day?

No. It is a favorable sign, but beach comfort can still shift with wind, surf, weather, and how sensitive your group is to irritation.