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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Latest Coastal News Filter

Image Credits: The Australian Institute of Marine Science.

WHOI Develops Tool to Predict Coral Bleaching Months Before It Strikes

6/9/2026

By whoi.edu, whoi.edu. A new forecasting tool from Woods Hole Oceanographic Institution could give reef managers and coastal communities a five-to-six-month head start on one of the ocean’s most destructive events: coral bleaching. Called the Bleaching Event Early Predictor (BEEP), the system works by tracking three large-scale climate patterns in… SEE MORE

Image Credits: Flickr.com.

Remarkably Bright Creatures: A Story of Octopus Intelligence Set in the Pacific Northwest

6/9/2026

By Janet Green Hammerman, best4boats.com. The Netflix adaptation of Shelby Van Pelt’s bestselling novel Remarkably Bright Creatures is drawing renewed attention to one of the ocean’s most fascinating inhabitants — the giant Pacific octopus. Set in a fictional Pacific Northwest coastal town, the story follows an aging widow, a drifting… SEE MORE

Physician Dr. Larry Spetka swims with his namesake, Larry the whale shark, in the Gulf in May 2025. Credit: BWRI/Jamison Smith

A Year in the Life of Larry the Whale Shark

6/8/2026

By fisheries.noaa.gov, fisheries.noaa.gov. One year ago today, researchers deployed a satellite tag on a whale shark off the coast of Tampa Bay, Florida. They never could have anticipated the epic journey that would ensue. On May 28, 2025, researchers set out from Boca Ciega Bay, Florida, heading into the Gulf… SEE MORE

Coral bleaching at Cheeca Rocks in the Florida Keys in 2023. [Credit: NOAA]

World’s Fourth Mass Coral Bleaching Event Likely Ended in 2025

6/7/2026

By nesdis.noaa.gov, nesdis.noaa.gov. After analyzing satellite data and bleaching observations, NOAA’s experts say the record-breaking fourth global coral bleaching event likely concluded in mid-2025. The fourth global coral bleaching event was confirmed by NOAA on April 15, 2024. From early-2023 to mid-2025, bleaching-level heat stress impacted 84% of the world’s coral… SEE MORE

During the 2025 Deep-sea Habitats of the Cook Islands expedition on Exploration Vessel Nautilus the team surveyed various seascapes to better understand seabed environments, and natural and mineral resources in the region. In this image, polymetallic nodules rest on sediment accumulated in a depression between rounded pillows and extended lobate lava flows, which are evidence of ancient volcanoes. (Image credit: Courtesy of Ocean Exploration Trust)

NOAA Scientists and Partners to Map Deep Waters, Seabed in the Cook Islands

6/6/2026

By noaa.gov, noaa.gov. This summer, NOAA Ocean Exploration will conduct an expedition on NOAA Ship Okeanos Explorer to map, explore and characterize deep waters off the coast of the Cook Islands. The effort is in partnership with the Cook Islands Seabed Minerals Authority. Using remotely operated vehicles (ROVs), mapping technologies and onsite… SEE MORE

Image Credits: Flickr.com.

The Container Ship That's Also an Ocean Science Lab

5/29/2026

By Amy E. Nevala, whoi.edu. Some of the most valuable ocean data in the Atlantic isn’t being collected by a research vessel — it’s riding aboard a container ship. The M/V Oleander, which makes twice-weekly cargo runs between Port Elizabeth, New Jersey, and Hamilton, Bermuda, has carried scientific instruments since… SEE MORE

Image Credits: Freerange Stocks.

Three Ocean Robots Exploring Active Underwater Volcanoes

5/18/2026

By Amelia Macapia, whoi.edu. The ocean floor is home to thousands of volcanoes — many of them active — and understanding what’s happening down there requires machines that can go where humans can’t. A new feature from WHOI’s Oceanus magazine profiles three robotic vehicles that are transforming what scientists know… SEE MORE

Bluefin Tuna underwater Image Credits: Shutterstock, Shutterstock, Adnan Buyuk

Western Atlantic Provides Refuge for Bluefin Tuna

5/1/2026

By fisheries.noaa.gov, fisheries.noaa.gov. A 30-year study shows that conservation measures in the western Atlantic have created a vital haven, contributing to the recovery of bluefin tuna. An international team of scientists deployed electronic tags on bluefin tunas across three decades to investigate stock movement between the eastern and western Atlantic.… SEE MORE

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