UTERThe best tide for fishing is moving water, and which direction is best depends on the structure you fish. Outgoing (falling) tide usually fishes best at passes, inlets, creek mouths and flat edges because it drains bait to fish waiting in the deeper water; incoming (rising) tide usually fishes best on shallow flats, mangrove shorelines and beaches because it floods new water and lets fish push up to feed.
That is the short answer. The rest of this guide goes structure by structure, explains what slack tide really is (and why it does not always line up with the high and low on your chart), and shows you how to read a tide chart so you can plan a trip around the two or three hours that matter.
Why moving water matters more than direction
Fish do not care what time the tide table says. They care about current. Current carries shrimp, crabs and baitfish past ambush points, it pushes clean water over a flat, and it gives a snook or a redfish a reason to sit behind a piling and wait for food to come to it. When the water stops, bait scatters, and predators either go looking or go quiet.
On a typical semidiurnal coast (two highs and two lows a day), the tide height changes slowly near each turn and fastest in the middle. That is the old "rule of twelfths": roughly one twelfth of the range moves in the first hour, two in the second, three in each of the third and fourth, then two and one again. The middle two hours of a rise or fall move half the water. Those are your prime hours.
Incoming vs outgoing by structure
| Structure | Usually best | Why |
|---|---|---|
| Passes and inlets | Outgoing, first half to middle | Bait from the whole bay funnels out through one gap; fish stack on the edges and behind the bar |
| Grass flats | Late incoming into early outgoing | Rising water lets fish onto the flat; the first of the fall pulls bait off the edges |
| Mangrove shorelines | High incoming | Fish need enough water to get up under the roots; at low they drop to the nearest trough |
| Docks and bridges | Either, strongest flow | Pilings break the current; fish hold on the down-current side and the shadow line |
| Beaches and surf | Incoming, especially the last two hours | Water fills the trough and moves bait along the beach; cuts in the bar run hard on the fall |
| Oyster bars | Low incoming | The first water over the bar flushes crabs and shrimp off the shell |
| Creek mouths | Outgoing | The creek drains its bait right into the mouth |
Passes and inlets
A pass is a funnel. On the outgoing tide every shrimp, crab and glass minnow that rode into the bay has to come back out through the same gap. Tarpon, snook, jacks and Spanish mackerel know it. Fish the down-current side of jetty tips, the seams where fast water meets slow, and the drop where the channel falls off the bar. In spring and summer the strong outgoing tides around the new and full moon are when tarpon and snook feed hard in passes from Boca Grande to the Keys.
The incoming tide at a pass is not dead, it just fishes differently: clean Gulf or ocean water pushes in, and fish spread out along the inside edges. If the wind is blowing hard against an outgoing tide at an inlet, the water stacks into steep standing waves. That is a safety problem before it is a fishing one.
Grass flats
Flats are about depth. A flat that holds 3 ft at high may be 10 inches at low, and the fish leave with the water. Redfish and spotted seatrout push onto the flat on the rise, feed through the high, and fall back to the edges, potholes and channels as it drains. The best stretch on many flats is the last of the incoming into the first hour of the fall: enough water for the fish to be up, and enough current to move bait. On a big low tide, fish the edge where the flat drops into the channel instead.
Docks, seawalls and bridges
Docks and bridges fish on either direction as long as the water moves. Fish face into the current and hold just behind the pilings, so cast up-current and let the bait drift back to them. The side the current is flowing toward changes with the tide, which means the "good side" of a bridge flips twice a day. Sheepshead on pilings are the exception that likes slower water: the hour either side of the turn makes it easier to keep a fiddler crab straight down on the structure.
Beaches and surf
On the beach, the incoming tide fills the trough between the sand and the first bar, and pompano, whiting and redfish slide in to feed on sand fleas and coquinas. The last two hours of the incoming and the top of the tide are the classic window. On the fall, look for cuts, the gaps in the bar where water drains back out. They concentrate bait like a small pass.
What slack tide really is
Slack water is the short period when the current stops and reverses. It is usually the slowest fishing of the tide. Use it to move to the next spot, retie, or fish deep wrecks and bridge footings where full current makes it hard to hold a bait on the bottom.
Here is the part most tide charts do not tell you: slack current is not always at the time of high or low tide. NOAA computes tide predictions and current predictions separately because the relationship between them is different at every location. In a long bay or behind a narrow pass, water can keep flowing in for a while after the tide has peaked outside. And NOAA's predictions do not include wind or river flow, both of which can hold the water up or push it out early. Treat the chart as a plan and the water in front of you as the truth.
How to read a tide chart
- Find the nearest station. NOAA publishes predictions for thousands of US tide stations. A station across the bay can be an hour off from your spot, so pick the closest one on the same side of any pass.
- Read the highs and lows. Each turn has a time and a height in feet, measured against a datum (usually mean lower low water, MLLW, so 0.0 ft is an average low, and a negative number is an unusually low tide).
- Work out the range. Subtract the low from the high. A 2.5 ft swing moves far more water than a 0.8 ft one. Ranges are biggest around new and full moons (spring tides) and smallest around the quarter moons (neap tides).
- Mark the middle. Halfway between a high and the next low is roughly the strongest outgoing flow. Halfway between a low and the next high is the strongest incoming.
- Lay the light over it. A strong outgoing tide that peaks at dawn or dusk is the window guides book first.
Example: high at 6:10 am (2.1 ft), low at 12:40 pm (0.2 ft). The range is 1.9 ft, a decent tide. The fall runs strongest around 9:25 am, so be set up at the pass by 8:15 and fish it through about 10:30. If sunrise is at 7:05, the first hour of good current also overlaps low light.
How Fish Scouter reads the tide for you
Fish Scouter pulls the predicted highs and lows from the nearest NOAA tide station to where you are fishing. Between each high and low it draws the standard half-cosine tide curve, and it works out flow as how fast that curve is changing: zero at the turn, strongest at mid-tide. Within roughly the first and last 12% of a rise or fall it calls the water slack.
From that it builds prime windows: the hour and a quarter either side of maximum flow on each rise and fall in the next 24 hours, ranked higher when they land within 90 minutes of sunrise or sunset. In the species forecast, each fish gets points for moving water scaled by how much that species wants current. Snook and tarpon score the most from a strong flow; tripletail barely care. The reasons are shown in plain words, for example "Outgoing water is moving" or "Near high slack — turns in 40 min".
Two honest limits. First, this is tide height from NOAA, not a current prediction, so at passes where current lags the tide the real slack may come later than the app's. Second, wind and rain are not in NOAA's tide numbers. The app scores wind separately (see wind and fishing), but a strong onshore blow can still hold water up on a flat longer than any prediction says.
Putting it together: a tide plan
- Pass or inlet: be there for the first half of the outgoing, most of all on a big new- or full-moon tide.
- Flat: work the flat on the high incoming, then slide to the edge and the nearest channel as it falls.
- Mangroves: fish the top of the tide, skipping baits under the roots.
- Beach: the last two hours of incoming into the high, then look for cuts on the fall.
- Slack: move, or fish deep structure.
Rules on what you can keep change by state and by season, so check the FWC or your own state agency before you keep a fish. For more on how the moon fits in, read do solunar tables work.
Try it on your water
We think Fish Scouter is the best way to plan a trip around the tide. It shows the curve, the next turn, the flow and the prime windows for the water you are fishing. It then ranks every species there for right now and says why, combining the tide with water temperature, season, light and wind in one score. Start a free trial and plan your next tide in a minute.