Tide Charts & Tide Times
Official NOAA tide predictions for 3,300+ U.S. coastal stations — today's highs and lows, an interactive chart, a high-tide finder that looks up to a year ahead, and a ⚠ flag when storm weather lines up with a high tide.
✓ In Saved Stations
What do you use tide info for? Pick all that apply — anonymous, and it helps us build the right tools.
Tide chart
Drag to resize (2–7 days) · hold to move the dates · tap the curve for exact heights.
Dark bands = night · red = forecast storm risk (darker = stronger) · blue line = barometric pressure · red dots = storm-flagged highs. Feet above MLLW, station local time.
Next king tides
The biggest tides of the coming year at this station — the windows most likely to bring minor coastal flooding, and the best days for extreme-low-tide beachcombing right after.
Computed from a full year of NOAA predictions: the top 10% of high tides, grouped into date windows.
Sun & moon
Find high tides by date
The next 5 days to start — every high and low, with storm windows in line. Add 5 more days as many times as you like, or pick any range up to a year out.
🌀 rows mark forecast storm windows in line with the tides they may intensify, and affected highs show a minimum surge estimate (inverse-barometer rule, ~1 ft per 30 hPa below normal — wind can add much more).
Storm & wind outlook
⚠ marks a high tide whose forecast hour shows 35+ mph gusts, 25+ mph sustained wind, pressure at or below 996 hPa, or heavy rain. Storms — especially onshore wind plus low pressure — can push the real water level well above the predicted tide. This is an advisory aid, not a warning service: follow the National Weather Service for safety decisions.
How the tide pages work
Tide results live on each location's own page: today's high & low tides, an interactive chart, king-tide dates, a year-ahead high-tide finder, and a ⚠ flag when storm weather lines up with a high tide. Your Saved Stations appear above as one-tap cards (the ★ is your default); click the search box to see the stations nearest you, or type a coastal town, a state, or a NOAA station ID.
The chart is the date control. Drag the ‹ › handles to resize the bright band, hold the ⇔ button to move it to different dates (the chart zooms out to 30 days while you hold), and use Settings under the chart for the day count or a pinned 30-day view.
Tide charts by state
Each state opens its full list of stations, organized by county. States with a single station open that station directly.
How fast does the tide come in? Speed is the hidden danger
What catches people isn't usually the height of the tide — it's the speed. The time from low to high is essentially fixed (about 6¼ hours on most coasts), so a big tide must move faster: a 30-ft range like Anchorage's climbs 6–7+ feet per hour at its peak, while a 3-ft tide creeps a few inches. Same clock, ten times the water.
And no tide rises steadily. Sailors' Rule of Twelfths: the rise comes in hourly shares of 1-2-3-3-2-1 twelfths — meaning half the entire tide arrives in the middle two hours. A 10-ft tide puts on ~5 ft in that window, roughly six times faster than its first hour. If you walked out at low tide, the water coming back at hour three is a different animal than the trickle at hour one.
Where it gets dangerous: on flat beaches, mudflats and sandbars, a fast vertical rise turns into water advancing horizontally faster than you can comfortably walk — and it fills the low channels behind you first. In funnel-shaped estuaries (Turnagain Arm, the UK's Severn) the incoming tide compresses into a bore — an actual moving wall of water. Gulf of Mexico coasts get the opposite: one small tide spread over ~12 hours, about as gentle as tides come. Rule of thumb: know the low-tide time, and be headed back before the middle hours of the flood — with wind blowing onshore or a ⚠ storm flag on this page, earlier still.
The largest tides in the U.S. and the world
The world record belongs to Canada's Bay of Fundy (up to ~52 ft); America's giants are Alaska's Cook Inlet — Anchorage, AK swings 26–30 ft — and Eastport, ME (~18 ft) on the East Coast. We wrote up the whole leaderboard, with live charts for every U.S. entry:
Where does the tide data come from?
Straight from NOAA CO-OPS, the official U.S. source for tide predictions. Heights are in feet above MLLW (mean lower low water, the standard chart datum) and times are shown in the station's own local time.
How far ahead can I see the tides?
Tide predictions are computed from astronomy (the positions of the moon and sun), so they're available about a year ahead. Use the date-range finder to list every high tide between any two dates — for planning a beach day, a boat launch, fishing or photography.
What is a king tide?
An informal name for the highest tides of the year, which happen when a new or full moon lines up with the moon's closest approach to Earth. In the finder, the top 10% highest tides in your range are marked with a crown — those are king-tide territory, and the most likely to cause minor coastal flooding.
Does weather change the tide?
Tide predictions are astronomy only — they don't include weather. A storm's onshore winds and low pressure can push the actual water level well above the prediction (storm surge). That's why high tides that coincide with gale-force gusts, strong winds, low pressure or heavy rain in the 16-day forecast get a ⚠ flag here, with storm windows and surge estimates shown in line with the tides they may affect. For safety decisions, always follow official National Weather Service warnings.
What actually makes the tide bigger or smaller?
The engine is gravity: the moon and sun pull the ocean into bulges. When they line up at a new or full moon you get the biggest swings (spring tides); at quarter moons their pulls partly cancel (neap tides), and the moon's closest approach (perigee) super-sizes things further — that's a king tide. On top of that astronomy, weather moves the water: wind blowing toward the land physically piles water against the coast and can make a high tide noticeably taller (blowing offshore does the opposite), and barometric pressure acts like a lid — roughly every 30 hPa the pressure drops lets the sea rise about a foot (the inverse-barometer effect). River flooding, the shape of the bay, and even long-term sea-level cycles stack on top. That's why the chart shows a barometric-pressure line and shades storm windows red: the prediction is astronomy, and weather is the difference between the prediction and your ankles.
What are the highest tides in the world — and in the U.S.?
The world's largest tides are in Canada's Bay of Fundy, where the range between low and high can top 50 feet (it's outside NOAA's network, so it isn't listed here). In the U.S., the giants are Alaska's Cook Inlet — Anchorage sees swings around 26–30 feet — along with Southeast Alaska ports like Skagway, and on the East Coast, Eastport, Maine at roughly 18 feet. All of those have dedicated pages here.
Can I save my home beach and other spots I follow?
Yes — tap ＋ Add to Saved Stations next to any station's name (it turns into a green Saved note), or ＋ Add nearest inside the Saved Stations dropdown to add the station closest to you (allow location access). Your saved spots appear as one-tap cards on the tides home page, the Default column's radio button picks your primary station, and Edit removes stations. Everything is stored on your device; no account needed.
Is this free? Do I need an account?
Completely free, no sign-up. It's built on public NOAA and Open-Meteo data and works on any device.