alarm-clock.org/tides

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.

Tide chart

Every high, low and everything in between — hover or tap the curve for exact heights. Feet above MLLW, station local time. Shaded bands are nighttime; dots mark highs/lows; red dots are highs with storm-force weather in the forecast.

Sun & moon

Find high tides by date

Pick any range up to a year out — handy for planning around the biggest (or smallest) tides.

Storm overlay on: 🌀 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). Off: the pure astronomical tide.

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.

Popular tide stations

AK Sitka Juneau Anchorage Ketchikan Skagway Valdez Seward Nikiski (Cook Inlet) Kodiak

AL Dauphin Island Mobile

AS Pago Pago

CA San Diego Los Angeles Santa Monica Santa Barbara Monterey San Francisco Alameda Humboldt Bay Crescent City La Jolla Newport Beach Port San Luis Point Reyes Mendocino Coast

CT New London Bridgeport New Haven

DC Washington

DE Lewes

FL Jacksonville Cape Canaveral Palm Beach Miami Key West Naples St. Petersburg Pensacola Fernandina Beach St. Augustine Marathon Fort Myers Clearwater Beach Cedar Key Apalachicola Panama City

GA Savannah St. Simons Island

GU Guam (Apra Harbor)

HI Kauai (Nawiliwili) Honolulu Maui (Kahului) Hilo

LA Grand Isle New Orleans

MA Boston Woods Hole Nantucket

MD Ocean City Baltimore Annapolis

ME Eastport Bar Harbor Portland

MS Bay St. Louis

NC Duck Beaufort Wrightsville Beach Outer Banks Wilmington

NH Portsmouth

NJ Sandy Hook Atlantic City Cape May

NY Montauk Kings Point New York

OR Charleston Newport Astoria

PR San Juan

RI Newport Providence

SC Myrtle Beach Charleston

TX Galveston Port Isabel Sabine Pass Rockport

VA Kiptopeke Norfolk Virginia Beach

WA Toke Point Neah Bay Port Townsend Seattle Friday Harbor Port Angeles Tacoma

America's biggest tides

Looking for the extremes? The largest tide swings in the U.S. are in Alaska's Cook Inlet — Anchorage runs about 26–30 ft between low and high, with Nikiski close behind — plus Southeast Alaska ports like Skagway and Juneau. On the East Coast the champion is Eastport, Maine (~18 ft), near the Bay of Fundy — the world record holder at 50+ ft, just across the Canadian border and outside NOAA's network. For contrast, the Gulf of Mexico's tides (Galveston, Pensacola) often move barely a foot or two.

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 — and the storm-overlay toggle lets you view the table with storm windows and surge estimates, or the pure astronomical tide on its own. For safety decisions, always follow official National Weather Service warnings.

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 ☆ Follow on any station to add it to your list, and Set as default to make it the one that loads first on the tides home page. Your list appears in the "My stations" dropdown for one-tap switching. 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.

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