Slack tide times by location

Pick a station for today's slack water times and the next 7 days, with the max flood and max ebb between each turn. Computed from NOAA harmonic data, the same engine the Slackwater app runs on your iPhone. Times are shown in each station's local time zone.

Find slack tide near me →

Alaska

California

Caribbean

Gulf Coast

Hawaii

Mid-Atlantic

Northeast

Pacific Northwest

Southeast

Slack tide questions, answered

When is slack tide?

Slack tide is the short pause when the tidal current stops before it reverses, twice in each tidal cycle. At the head of a bay or harbor it lands close to high and low water. At an ocean inlet, or in a channel joining two basins, it can fall up to about three hours off the printed tide. Pick a station above to see today's turns in local time.

How long does slack tide last?

It depends on how hard the current runs at that spot, not on how high the tide is. Divide 120 by the peak current in knots for a rough number of minutes under half a knot: a spot that peaks at 2 knots gives about an hour of workable slack, a 5 knot race about 24 minutes.

Where do these slack times come from?

They are the turning points of each station's tide curve, computed from NOAA harmonic constituents. That is an estimate of slack from tide height, not a measured current prediction, and every station page says so. Where NOAA publishes a current station near you, its predictions give slack directly and are the better source.

What slack water is, how long it lasts, and why it rarely matches high tide →