Coasti started with one question, asked every morning across Florida: is today a beach day, and which beach? Answering it used to mean juggling a weather app, a radar app, the county flag page, and a red-tide map. We built the tool that reads all of it for you and gives you the answer in one glance.
We cover 50 beaches: 46 on Florida's Gulf and Atlantic coasts, plus pilot beaches in Georgia and the Carolinas. For each one, Coasti folds the official lifeguard flag, National Weather Service forecasts and alerts, live NEXRAD radar, NOAA tides and water temperature, FWC red-tide sampling, and Mote Marine Laboratory beach reports into a single verdict: good to go, time it right, or not today, plus the best window to be on the sand.
NOAA CO-OPS tides and water temperature · National Weather Service forecasts and alerts · NEXRAD radar mosaic · FWC harmful algal bloom sampling · Mote Marine Laboratory beach reports · Open-Meteo hourly weather.
When thunder roars, go indoors. Coasti is advisory only. Always verify the posted flag with lifeguards on site. They are the source of truth.
Coasti is built by Coasti LLC, a small independent team in Florida. Questions, corrections, or a beach we should add? Visit support or request a beach right from the app's search.