US Harbors is the #1 Source for Tide Charts and Coastal Information for over 1,400 harbors in 30 coastal states. Our curated data helps you plan smarter, enjoy your time on the water, and stay ahead of rapidly changing tides, storms, and flooding.

 

Tide Charts

US Harbors illustrates tide forecasts with our simple, intuitive charts. Easily scan the highs and lows online or print a convenient monthly tide chart for the boat or office.

Wind speed forecast bar graph

Weather

US Harbors delivers weather predictions with a focus on marine forecasts, buoy data, weather alerts, and onshore forecasts for harbors near you that include wind speed and direction, relative humidity, and more.

High Tide Flooding

Each month, we publish a high-tide flooding report for forecasted harbors across the country. Look for harbors near you to know when extreme high tides could cause flooding. Sign up for our newsletter to be alerted to new high tide flooding reports.

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- Bill P. Long Island, NY

Latest Coastal News Filter

Image Credits: Noaa.

Sudden Danger: The Science And Stakes of Flash Flood Forecasting

7/2/2026

By research.noaa.gov, research.noaa.gov. Though not as feared as tornadoes, hail, or lightning, flash floods are one of the deadliest weather hazards in the United States. While the number of fatalities can vary dramatically from year to year, the national average for flood deaths is 88. Lightning accounts for an average of… SEE MORE

Michael Peñuelas, a Seattle scuba diver, examines a large sunflower sea star in the Edmonds Marine Park in Puget Sound, Washington, in 2021. (Image credit: Courtesy of Zachary Gold)

New eDNA Tool To Help Track Recovery Of Sunflower Sea Star, a Pacific Coast ‘Apex Predator’

6/30/2026

By noaa.gov, noaa.gov. A wasting disease that surged during the intense 2013-2016 Pacific marine heatwave known as the Blob decimated numerous species of sea stars and triggered the collapse of vast coastal kelp forests from the Aleutians to the Baja Peninsula. One of the species most affected was the sunflower sea star, an… SEE MORE

A fish-eye view of the wake of a ship out at sea. Here's an ocean fact: The surface layer of the ocean is teeming with photosynthetic plankton. Though they're invisible to the naked eye, they produce more oxygen than the largest redwood trees. (Image credit: NOAA)

What World Ocean Day Can Look Like in 100 Years

6/29/2026

By noaa.gov, noaa.gov. More often than not, when we talk about ocean conservation, the conversation naturally gravitates toward what we stand to lose if we don’t act. This is only natural, as the urgency of the climate and biodiversity crises forces us to consider a future where our most cherished… SEE MORE

A person tends to oyster beds at an oyster farm in Wellfleet, Massachusetts. (Image credit: NOAA Fisheries)

NOAA Strengthens Commitment to Aquaculture Through New Cooperative Institute

6/28/2026

By noaa.gov, noaa.gov. Today, NOAA announced the University of New Hampshire as host institution for the new NOAA Cooperative Institute Fostering Aquaculture Research and Markets (CIFARM) to expand NOAA’s impact and strengthen efforts to boost American seafood competitiveness. After a highly competitive application process, this new five-year cooperative institute will harness partnerships… SEE MORE

An aerial photo of the green waters of harmful algal bloom in western Lake Erie, July 20, 2020. (Image credit: Courtesy of Zachary Haslick, Aerial Associates)

Moderate Harmful Algal Bloom Predicted for Western Lake Erie

6/27/2026

By noaa.gov, noaa.gov. NOAA and its research partners are forecasting a moderate harmful algal bloom (HAB) in western Lake Erie this summer. This year’s bloom is expected to measure 3.5 on the HAB severity index, with a potential range of 3 to 4.5. “Toxic algae affect not only the health… SEE MORE

Sailboat moored in Padanaram Harbor, South Dartmouth, MA at sunset

2026 Best Harbor Contest Winners Announced!

6/23/2026

Padanaram, South Dartmouth, MA Wins Best Harbor Padanaram, Massachusetts is the Grand Winner, Best Harbor in the U.S. for 2026 Boaters and coastal enthusiasts in Padanaram, South Dartmouth, Massachusetts, got out the vote this year to take the prize as our Grand Winner, returning to the top spot in US… SEE MORE

Vessels from the West Coast squid fleet followed market squid north into Oregon as ocean waters warmed, leading Oregon to adopt its first regulations for squid fishing in the state. Photo courtesy of California Department of Fish and Wildlife.

7 Ways El Niño and Large Marine Heatwave Could Affect West Coast Marine Species

6/23/2026

By fisheries.noaa.gov, fisheries.noaa.gov. A large marine heatwave has bathed parts of the West Coast in very warm ocean waters over the past year, breaking temperature records in the Pacific. NOAA has also announced that El Niño has developed in the tropical Pacific and is predicted to intensify to a moderate or strong level this… SEE MORE

Neskowin Creek, a salmon stream in Tillamook County, Oregon, flows out to the Pacific Ocean. Credit: Adobe Stock

Reconnecting Rivers Boosts Oregon Coast Coho Recovery

6/10/2026

By fisheries.noaa.gov, fisheries.noaa.gov. NOAA Fisheries supports one of the most ambitious salmon restoration projects on Oregon’s coast: the Salmon SuperHwy. This partnership of more than a dozen organizations works across the Tillamook, Nestucca, and Sand Lake watersheds. It works to restore fish passage at dozens of stream barriers, such as failing… SEE MORE

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