About the Tide & Fishing Window Planner
This is the daily-check tool for anyone whose plans depend on the water: anglers timing the bite, surfers reading the push, clammers hunting negative tides, and beach walkers who would rather not get cut off by an incoming one. Tide predictions come straight from NOAA CO-OPS — the official harmonic predictions for more than 3,000 US coastal stations — with the six stations nearest you ranked by distance, because tide timing can shift an hour within a few miles.
On top of the tide table and 48-hour curve, the planner computes the classic solunar activity windows from real moon-transit astronomy (calculated in your browser, not looked up), then flags the overlaps that matter: a major period landing on dawn, dusk, or moving water. Solunar theory is a fishing heuristic, not settled science — but its windows coincide with tide movement for the same lunar reasons, which is why generations of anglers keep planning around it.
Your location is used only to rank nearby stations and is never stored. Predictions are astronomical: wind and storm surge can move real water levels from the predicted ones.
Major = moon overhead or underfoot (±1 h). Minor = moonrise/moonset (±30 min). Windows that stack with dawn, dusk, or a tide change are flagged — those are the ones to fish.
Every solunar window this week, scored for moon phase, dawn/dusk overlap, and tide movement. The eight best:
How to Use the Tide & Fishing Planner
Let the tool find you (or search any coastal town), then pick the station nearest the water you will actually fish, surf, or walk — not the nearest city. The hero counts down to the next tide; the curve shows the next 48 hours of water movement, and the solunar panel lists today’s activity windows with the productive overlaps flagged. The whole read takes ten seconds, which is the point: this is a bookmark-and-check-daily tool, and the Pro home-station list plus week ranking exist to make that check even faster.
Why Tides Happen on a 6-Hour, 12-Minute Beat
The moon’s gravity raises two bulges of ocean — one facing it, one opposite — and the Earth rotates beneath them. Because the moon advances along its orbit while we spin, the tidal “day” runs about 24 hours 50 minutes, which is why every high tide arrives roughly 50 minutes later than yesterday’s. Most US coasts see two highs and two lows daily (semidiurnal); parts of the Gulf of Mexico get just one of each (diurnal). When the sun aligns with the moon at new and full moon, ranges swell into spring tides; at quarter moons the sun fights the moon and ranges shrink to neap tides. Bigger range means faster current — and faster current usually means better fishing.
The Case for (and Against) Solunar Theory
John Alden Knight’s 1926 solunar theory predicts feeding peaks when the moon crosses the observer’s meridian — overhead or underfoot — with lesser peaks at moonrise and moonset. Controlled evidence is thin, and honest anglers should know that. But the theory persists for a practical reason: in tidal water, moon transits and tide changes are driven by the same mechanics, so solunar majors frequently coincide with the moving water that demonstrably does trigger feeding. Used that way — as a scheduling heuristic stacked with dawn, dusk, and current — it costs nothing and organizes your day around the highest-probability hours.
Reading the Curve Like a Local
The steep middle of each rise and fall is where the water moves fastest — roughly the middle two hours between a high and a low carry about half the total water (the old rule of twelfths: 1-2-3-3-2-1). Slack water at the top and bottom of the curve is the slowest fishing and the easiest boat handling; the steep sections are the opposite. For wade fishing and beach access, the curve also warns you: a flat you walked onto at low tide floods fastest mid-rise, not at the end, which is exactly when sandbars cut people off.
Negative Tides, Minus Tides, and Clamming Days
Because heights reference MLLW — the long-term average of the lower daily low — a negative prediction exposes bottom that is usually underwater. The best clamming, tidepooling, and flats-scouting days cluster around spring tides near the solstices, when lows can run a foot or more below datum. Work backward from the low: arrive an hour before, and know your exit route, because the same spring tide that exposed the flat brings the water back with unusual speed.
Chasing conditions further? The Golden Hour & Light Planner covers sun angles for the same dawn patrol, and the Aurora Forecast handles the night shift. Browse all Math & Science tools for more.
Frequently Asked Questions
How accurate are NOAA tide predictions?
Astronomical predictions from NOAA harmonic stations are typically accurate to within minutes and a few tenths of a foot — the moon and sun are extremely predictable. What they exclude is weather: strong onshore wind, storm surge, or unusual barometric pressure can raise or lower actual water level noticeably. For planning weeks ahead they are the gold standard; on the day, check conditions too.
What are solunar major and minor periods?
The solunar theory holds that fish and game feed most when the moon is directly overhead or directly underfoot (the two roughly 2-hour major periods each day) and moderately at moonrise and moonset (the two shorter minor periods). It has never been rigorously proven, but it correlates with tide movement in coastal water because the same lunar mechanics drive both — which is why the combined windows here are practical even for skeptics.
Is a rising or falling tide better for fishing?
Moving water beats slack water almost everywhere — current carries bait and triggers feeding. Many inshore anglers favor the last two hours of the incoming tide and the first of the outgoing, when predators push onto flats and ambush points with the flow. The honest answer is spot-specific: the pattern to build is fishing the same location across different tide stages and logging results.
Why does the nearest station matter so much?
Tide timing shifts dramatically along a coastline — a bay entrance and the back of the same bay can differ by more than an hour, and height ranges differ too. NOAA runs thousands of subordinate stations precisely because one chart per region is not good enough. Always pick the station nearest the water you will actually stand in, not the nearest big city.
What does MLLW mean on tide heights?
Heights are measured from Mean Lower Low Water — the average of the lower of each day's two low tides over a 19-year epoch. A prediction of 0.0 ft means water at that average lowest level; negative tides fall below it and expose flats and structure that are usually submerged, which is why clammers and beachcombers hunt specifically for negative-tide days.
