Key West, FL tide times

The hero block shows the next high tide at the Key West harbour gauge in local Eastern time. The 7-day table covers all daily extremes. The asymmetry between the two daily cycles is large here — one high can be 30 cm and the other 5 cm on the same day — so always check the actual heights rather than assuming both highs are similar.

Key West sits between two open seas — the Atlantic to the south and the Gulf of Mexico to the north — that carry different tide signals. Where the two interact across the inter-island passes the Atlantic semidiurnal forcing partially cancels with the more diurnal Gulf signal. Mean range stays small (around 0.4 metres) and the daily pattern can shift week to week as the relative amplitudes change.

NOAA CO-OPS station 8724580 in Key West Harbour. NOAA's harmonic predictions for stations with mixed signals like this one model multiple constituents and produce navigation-grade accuracy under normal weather, even when the daily pattern looks irregular at a glance.

Most flats anglers work the change of tide more than absolute height — the moving water gets fish onto and off the flats. The 7-day table flags each day's high and low times. For tarpon work, the morning incoming around dawn is a regional standard. Wind shift, water clarity, and barometric pressure each matter as much as the tide curve.

No. For piloting in the Keys backcountry, the channels between islands, or in or out of Key West Harbour use NOAA's authoritative chart products, the Florida Keys NOAA chart 11442 series, and the latest USCG notices. The shallow patch reef, the bridge cuts, and the strong reversing currents in the inter-island passes all reward real navigational sources.