🌊 Tide Predictor
Enter a recent high tide and a time to check, and get an estimate of the next high and low tide and whether the water is rising or falling.
🌙 Estimate the Tide
What is a Tide Predictor?
A tide predictor projects the rhythm of the sea so you can plan around moving water — the single biggest factor in saltwater and estuary fishing. From one known high tide it estimates when the next high and low arrive and which way the water is heading.
This is a planning aid built on a simplified tidal cycle, not a precise forecast. Use it to time the bite, and always cross-check the official tide tables for your area before heading out.
âť“ Frequently Asked Questions
How does the tide predictor work?
It uses a simplified semidiurnal model: the tide is assumed to repeat on a fixed 12-hour-25-minute cycle, with a low tide roughly halfway between consecutive highs. Give it one recent high tide time and the moment you want to check, and it projects the next high, the next low, and whether the water is currently rising, falling, near high, or near low.
Is this a substitute for official tide tables?
No. This is a rough estimate only. Real tides are shaped by local geography, weather, wind, and the difference between spring and neap tides, which a simple cycle can't capture. Always verify with official tide tables from your national hydrographic or oceanographic service before planning a trip on the water.
Why do tides matter for fishing?
Moving water concentrates baitfish and triggers predators to feed, so the hours around a tide change are often the most productive. Knowing when the tide turns helps you time your spot, fish current seams and structure, and stay safe on flats and in inlets that can change quickly.
What time zone does the tool use?
For simplicity the calculator treats the times you enter as UTC and reports results the same way, so the offset stays consistent between your inputs and outputs. Convert to your local time, and remember the result is an approximation, not an official prediction.